bluuebunny/crossref_metadata_2025 huggingface dataset:
Coordinated Development of Natural Reserve, Economy, Environment and Society in Guangdong Province
Authors: Zhang Lin Ying , Jiang Yan Rong , Zhou Yong Zhang
Published: July 2014

By establishing the evaluation index system, the coordinated development model was proposed to make a quantitative research on the characteristics analysis of nature reserve, economic development, coordinated development of environment and society in Guangdong province. The results show that most of the regions in Guangdong province are in disorder state, and there exist significant differences in the protection of ecological resources, environmental protection, economic and social development in its inner regions. These regions were grouped into six categories, and the details of each category were described. Finally, the corresponding regulatory strategies are proposed for each category.
Application of MHB Technique in Superhighway Cement Concrete Pavement Resurfacing Projects
Authors: Hu Yu Ting , Mu Lan , Liu Zhan Liang , Du Yu Lin
Published: July 2014

MHB technique is applied, in superhighway cement concrete pavement resurfacing project (“white to black” project in short), to break the pavement surface and build the new pavement taking the broken one as the base or subbase, which makes good use of the remains in a very economical and environmentally friendly way, and solves the problem of reflective cracks appearing on the pavement surface after reconstruction as well. This thesis confirms the relevant parameters of MHB construction machinery, construction quality and intensity testing, etc by making researches in test sections, discusses the key process in construction with MHB technique and the relevant quality control measures during construction, and puts forward the ideas of reconstructing the pavement with MHB technique while making no influence on the superhighway traffic, even when the traffic if heavy.
Evaluation Segregation of SMA-13 Asphalt Pavement by Compactness
Authors: Li Chuang-Min , Liu An , Xiao Yu Rong
Published: July 2014

Segregation is one of the important reasons that cause the early damage of asphalt pavement, so it is of great significance to discuss the standard for evaluating segregation to control quality of pavement during constructing. SMA-13 specimens of different gradation segregation and aggregate-asphalt segregation are designed to discuss the effects of different levels of segregation on air voids and bulk specific gravity of SMA-13 Marshall specimen. And the classification standards for gradation segregation are established based on the test data with reference to the air voids range that proposed by United States. In order to recognize the levels and site of segregation quickly and accurately in the entity project, the ratio of bulk specific gravity and the theoretical maximum specific gravity of standard grading, that is the evaluation standard of compactness, is put forward as the evaluation standard for segregation of SMA-13 asphalt pavement in field test.
Precast Pavement Smoothness Control Method
Authors: Peng Peng , Wu De Fen , Tian Bo , Niu Kai Min
Published: July 2014

In the course of road maintenance, importance has been gradually attached by administrative authorities to precast pavement for its advantages like quickness, endurance and eco-friendliness. To ensure the smoothness of precast pavement, analyses and researches were done in terms of, say, precast pavement slab precision control, base course treatment, fabricated pavement slab leveling and treatment of joint faulting, and a control measure to ensure and improve the smoothness of precast pavement is suggested with consideration given to its service effectiveness in actual projects.
Development of a Model to Predict Pavement Temperature for Ghat Region in Libya
Authors: Salem Hassan Awadat , Uzelac Djordje , Crvenkovic Zagorka Lozanov
Published: July 2014

Asphalt pavements form an integral part of any transportation system. The structural capacity of the hot mix asphalt concrete layers depends on many factors including its temperature. Moreover, temperature can be a major contributor to several types of distresses. Therefore, temperature is a significant factor that affects the performance and life span of a pavement. The Libyan road network expanded at a phenomenal pace from approximately 1500 km of paved roads in 1970 to morethan 100,000 km in 2008. Ghat region is located on the southern east of Libya at latitude (24 59' N) in the desert. With the recent SHRP and LTTP research findings, it was necessary to investigate the applicability of the models developed from these research studies to Ghat's environmental conditions and more generally to the rest of Libyan desert reigions. This paper presents the research undertaken to develop models to predict high and low asphalt pavement temperatures in the Ghat region . A pavement monitoring station was set-up in Ghat to monitor air and pavement temperatures in different depth, wind speed and solar radiation. Data were collected for 365days. Daily minimum and maximum temperatures were recorded. A regression analysis was used to develop the minimum and maximum pavement temperature models, using air temperature, wind speed and solar radiation. This paper presents a new model for predicting maximum and minimum surface pavement temperature based on data collected by installed pavement monitoring station set-up at the Ghat region.
Effect of Emulsified Asphalt Content on Mechanical Property of Cement and Emulsified Asphalt Mortar
Authors: Li Yue , Wang Ping
Published: July 2014

Uniaxial compression and bending test of CA mortar, which have six different dosage of emulsified asphalt and the same dry material, is carried out with a electronic universal test machine. It turns out that: when the dosage of emulsified asphalt is lacked, the CA mortar cannot be uniform and stable slurry system; within the range of 300~680 mL emulsified asphalt, slurry state of mortar is good, no separation, and have good liquidity, in this range, with the increasing dosage of emulsified asphalt, compressive strength, elastic modulus and peak strain are gradually reduced, while ratio of bending strength to compressive strength rise at the beginning, then decline within a narrow range; The 1st and 2nd slurry is not stable, they appear separation and the surfaced asphalt, which have similar appearance and mechanical properties to cement mortar, and the last four groups of test results have great difference from the former two groups.
Experimental Study on the Reinforcement Treatment of Saline Soil Subgrade
Authors: Ma Li Jie , Wang Yu Liang , Zhang Jin Yu
Published: July 2014

Using cement or lime and cement to solidify the local saline soil. The physical and mechanical properties were comparative analyzed of the curing chlorine saline soil with different ratio, through compaction test and CBR test. The best cure programuse is 6% lime and 6% cement for the saline soil.
Failures of Concrete Slit Drains, Caused by Inappropriate Dilation Material Inserted into Multi-Layer Road Systems
Authors: Tej Petr , Kolisko Jiří
Published: July 2014

This paper introduces a real case from construction practice illustrating extensive damage to concrete slit drains, followed by the relevant computer simulation. From the computer simulation and lab tests it follows that the failures of concrete slit drains can be easily caused by deformations of the concrete slabs constituting the surrounding multi-layer road system. Thermally-induced expansions and contractions, as well as concrete shrinkage, produce, in non-dilating connection, stress in the link between the multi-layer road system and the lateral walls of the slit drains. The slit drains are highly sensitive even to a very small malfunction of the expansion joints (e.g. clogging of the slit by solid materials), or their bad installation. It is apparent that failures (cracks) in the slits arise even by the slight compression of a slit drain (to the order of tenths of a millimetre). The analysis presented shows the necessity for a careful installation of expansion joints during the placement of the slit drains into the surrounding multi-layer system, which could induce horizontal pressures on the drains. The study is concluded by recommendations for designers.
Failures of Concrete Slit Drains, Caused by Negative Effect of their Erroneous Integration into Surrounding Multi-Layer Road Systems
Authors: Tej Petr , Kolisko Jiří
Published: July 2014

Concrete slit drains (also known as slot drains) are being used for the draining of highways and roads, as well as for large handling and parking areas. Recently, this system of drainage has become increasingly applied, which does, however, bring with it an increased incidence of failures. The study concentrates on the failures of concrete slit drains, caused by the negative effect of their defective integration into surrounding multi-layer road systems. It starts with a theoretical analysis of the problem, i.e. the negative influence of thermal expansivity of surrounding concrete slabs on slit drains, the impact of their shrinkage, and the co-action of these factors. In addition, it presents a computer numerical analysis of a concrete slit drain loaded by the pressure of adjacent concrete slabs exposed to temperature effects and shrinkage. The most frequent stresses are modelled and the relevant results introduced.
Highway Subgrade Disease Treatment Technology Research in Volcanic Karst Crater Region
Authors: Huang Qing Hong , Fan Hong Jing
Published: July 2014

Research carried out the highway subgrade disease treatment technology research in volcanic karst crater region through the freeway construction instance in Hainan. And research introduces the hazards of the volcanic karst geology to subgrade, put forward the subgrade disease treatment principles and methods in volcanic karst region, and also defines subgrade disease treatment construction technology program of the uncovered karst disease and the covered karst disease by the scene test of grouting treatment. Research provides the basis of subgrade disease treatment construction techniques and methods in volcanic karst crater region.
Key Construction Technology of Porous Concrete Permeable Base
Authors: Bai Ai Ming
Published: July 2014

Porous concrete also be called macropterous concrete or porous lean concrete.As a new base material,it is a lean concrete between cement stabilized macadam and ordinary concrete.Based on Luoyang beltway project,this paper describes the composition design of porous concrete,and discusses the combination of construction machinery,technological process,QCS(quality control specification) and test detection of porous concrete permeable base.Also we do research on many technological parameters such as mixing,paving,molding,maintenance in the construction of porous concrete permeable base.This provides a reference on construction technology and its application.
Experimental Study on Pavement Performances of SBP Modified Asphalt
Authors: Sun Ya Zhen , Zhu Chuan Jiang , Wang Jin Chang , Yuan Yuan , Wu Gang Bing
Published: July 2014

In order to study the effectiveness of new type modified asphalt additive SBP on pavement performance of asphalt mixture, the experiments were carried out to evaluate the mixing and compaction temperature, high-temperature stability and water stability of SBP modified asphalt mixture. The high-temperature stability of the SBP modified asphalt mortar was studied by DSR. The heating temperature of mineral aggregate and the asphalt mixture mixing temperature and compacted temperature were determined by three different temperature asphalt mixture SCB test, which were got SGC (Superpave Gyratory Compactor). The wheel tracking test of asphalt mixture was carried to evaluate the high-temperature stability and freeze-thaw split test were studied the water stability. Through the wheel tracking test and water stability test in harsh condition, the high-temperature stability and water stability was evaluated again. It can be concluded that SBP can improve the pavement performances of asphalt mixtures.
Type Analysis of Rural Settlements Development of Hadaqi Region in Heilongjiang Province
Authors: Lv Jing , Zhang Kai Bo
Published: July 2014

This article takes rurals in Hadaqi Region in Heilongjiang province as research object. By collecting and processing data, we can analyze the type of transformation and application of rural settlements development on the type appeared in its development, in order to provide some reference for development of rural settlements in Heilongjiang province in the future.
Old and New Embankment Splicing Technology in Highway Reconstruction Project
Authors: Zhan Gao
Published: July 2014

In order to make a better convergence of old and new roadbed,according to treatment technology about highway reconstruction project of new and old roadbed lap,we introduced the four good construction technology detailedly used in the construction process. Four kinds of processing technology can significantly reduce differential settlement caused by road diseases,and strengthen the widening subgrade integrity.The results show that the appropriate cutting slope and excavation steps, a good degree of compaction, the rational use of geosynthetic materials, the use of the use of high quality packing can make the new and old roadbed integrity, achieve good effect of design and construction and reduced the incidence of disease.
Research on Maintenance and Repair Technology of the Continuous Welded Railway in Plateau Permafrost Region
Authors: Han Feng , Wang Bao Cheng
Published: July 2014

In practice of maintenance and repair project in the western plateau railway as the background, from maintenance and repair mechanism, detection method, line disease effect and other aspects, this paper studied the characteristics of the CWR in plateau permafrost region in-depth, analyzed the key problems of CWR maintenance and repair in permafrost region systematically, and put forward the corresponding solutions to meet the CWR maintenance requirements in plateau permafrost region.
Specific Study of Airport Pavement Asphalt Mixture
Authors: Guo Xiang Hong
Published: July 2014

In order to reduce the influence of mixing building material quality variability of asphalt mixture. On the basis of Kunming Changshui International Airport West runway mixing by disk data, The proportional difference standard deviation as the index, Study on the quality stability of the mixture of different types of mixing the raw material consumption variability, hybrid variant gradation and the mixing process. The analysis results show that Factors of mixing type, control accuracy and operating method of great quality variability of asphalt mixture; Different variability of various mixing raw materials; Mixture gradation variability index in 9.5mm, 4.75mm and 2.36mm sieve is greater, And the maximum at 4.75mm; Mixing plant start and end of the mixture quality variability than mixing intermediate stage. Finally, aiming at the mixing plant proposed a series of measures to reduce the mixture quality variability.
Study on Factors for Determination of Highway Subgrade Height
Authors: Yang Wei , Li Cong
Published: July 2014

With increasing concentration on highway land issue as the new round of highway construction, reducing land occupation and earthwork volume of highway engineering is necessary under the historical background of building “resource-saving and environment-friendly” society. It’s been widely known now in the industry that subgrade height of highway in China, especially high-grade highways, is on the high side. Therefore, it’s significantly necessary to discuss and study on appropriate subgrade height. This paper explains advantages and disadvantages of low-filled embankment and expounds current situation of indexes for subgrade performance – moisture, modulus resilience and permanent deformation; it proposes basic thinking of determining subgrade height mainly through meeting subgrade performance and engineering requirements and realization approach of the method.
The Indirect Tensile Strength of Palm Oil Fuel Ash (POFA) Modified Asphaltic Concrete
Authors: Maleka Abdulmalik Musa , Alkali Ibrahim Abubakar , Jaya Ramadhansyah Putra
Published: July 2014

The amount and nature of filler in asphaltic concrete mixes significantly affect its design and performance. The use of Palm oil fuel ash (POFA) as filler in asphaltic concrete has been studied with varying degree of success, this study therefore, evaluates the effect of POFA on the indirect tensile strength of asphaltic concrete AC 14. POFA was grained and passed through 75 μm sieve; a number of trial mixes were prepared using the Marshal Mix design procedure with 5% POFA to arrive at asphalt concrete mixtures that fulfill the Marshal criteria. The effects of POFA on stability, flow, stiffness and indirect tensile strength of asphaltic concrete (AC14) mixtures at their respective optimum binder content were evaluated. The results show that Marshall stability, flow, stiffness and indirect tensile strength values generally improved in the POFA modified mix compared with the control. POFA modified sample shows 16% improvement on the indirect tensile strength compared to the control.
The Influence of Coarse and Fine Ratio on ATB Asphalt Mixture Performance
Authors: Zhai Xiang Fei
Published: July 2014

Through the freeze-thaw splitting test, rutting test, low temperature bending test, comprehensive analysis the affect of coarse and fine ratio on ATB asphalt mixture performance. The results showed that: the ratio of change have a significant effect on water stability, high temperature stability, low temperature stability. Reasonable coarse and fine ratio have a higher degree of stability; Smaller coarse and fine ratio can effectively improve the asphalt mixture water stable performance, with coarse and fine ratio increased, freeze-thaw splitting strength ratio decreases; Larger coarse and fine ratio have an adverse effect on the high temperature stability, dynamic stability after the first increase and then decrease with increasing coarse and fine ratio; Smaller coarse and fine ratio can significantly improve the low temperature stability.
Dynamic Requisition-Compensation Balance Theory of Mining-under Village Relocation Planning Based on PSO Algorithm
Authors: Chen Ya Kai , Liu Dong Wen , Qiao Zhi Yong , Wang Ting Ting , Jiang Shu
Published: July 2014

This study has improved traditional ‘requisition first compensation later’ theory and ‘compensation first requisition later’ theory, and proposed dynamic requisition-compensation balance theory. Mathematical model of mining-under village relocation is established, and the particle swarm optimization (PSO) algorithm is used to optimize the stage relocation planning of dynamic requisition-compensation balance theory. The result shows that, this new theory can effectively solve land using problems such as land requisition difficulty and land compensation difficulty, reduce the human-land conflict, ensure execute relocation smoothly, promote reclamation project implementation, and can guarantee a certain amount of arable land surplus; The PSO algorithm can maximize both the surplus land area and the per capita building land area of farmer with high accuracy.
Experimental Study on the Anti-Cracking Performance for High Viscoelastic Asphalt Sand with SCB
Authors: Sun Ya Zhen , Xin Zhao Yang , Wang Jin Chang , Wu Gang Bing
Published: July 2014

In order to study the anti-cracking performance for high viscoelastic asphalt sand, the semicircle flexural Semi-Circular Bending (SCB) Test is carried out for measuring the maximum load and fracture energy of high viscoelastic asphalt sand. High viscoelastic asphalt sand are subjected to three loading rate (5,20,50mm/min) at three temperature conditions (5,15,25°C).When the temperature is constant ,the maximum load and fracture energy of specimen are increased with the loading rate increased. But, when the loading rate is constant, the maximum load of the specimens is decreased and fracture energy is increased with the temperature increased.
Study on Libyan Silt Property and Suggestions on its Application in Subgrade Construction
Authors: Zhang Ze Yu , Peng Li Yun , Wang Jian Ye , Abdulali Abobakir
Published: July 2014

The basic physical and mechanical properties of Libyan soil are analyzed through some experiments, including direct shear test, grading analysis test and compression test. According to the test results, the soil is named as low liquid limit silt featured by weak strength, high compressibility and permeability, which directly influences sub-grade stability, durability and pavement’s usability. In order to solve these problems, measures are discussed from two aspects, namely, soil improvement and construction method. The strength of the soil is apparently increased by the cement and lime adding, and the compressibility is decreased at the same time. And the rising height of capillary water reducing and protection forms for silt soil slope are also proved to be effective in the subgrade construction.
The Fatigue Test of Railway Rail Fastener Assemblies
Authors: Xu Jia Lin , Zhang Yong Liang
Published: July 2014

The rail fastener assemblies under alternating load for a long time , in addition to the vibration and strength,fatigue also is the main reason for damage .So effective fatigue test and life assessment is one of the important means to ensure the safety of railway operation .This paper introduces the routine fatigue test method of railway track fastener assembly which adopts the European Railway Standard EN13146-4,by using 33° test platform which conform to the actual operation stress conditions of the railway track can more effective test the rail fastening assembly.
A Study on the Adaptability of Photoelastic Experiment on Main Tower of Cable-Stayed Bridge
Authors: Dong Zhi Sheng
Published: July 2014

We designed the experimental model of main tower of Tianjin Haihe bridge according to photoelastic experiment theory and proceeded stress experiment at the positions where the stress calculation is precise. Then we compared the experimental results with the finite element calculation results to verify whether the photoelastic experiment fits the stress calculation of main tower of cable-stayed bridge. The experimental results show that the photoelastic experiment could supply gist for the stress calculation of main tower of cable-stayed bridge, which is significant far and wide.
Application of Quadratic Programming Method to Cable Force Calculation of Cable Erection Arch Bridge
Authors: Wu Cheng , Liu Jin Yu , Zhou Shui Xing
Published: July 2014

Taking the bare arch deformation under gravity as target alignment, the influence matrix that associates the cable forces with segment deformation is obtained via ANSYS program, and the cable force is quickly calculated by MATLAB quadratic programming toolbox. It is illustrated with an example of Guizhou Zong-xi River Bridge, which is a 360-meter concrete filled steel tube bridge in construction, and the calculation process is given. The results show that, this new method has the advantages of high precision and less number of iterations.
Comparison of Structural Type and Economics of Super-High Pier for Continuous Rigid Frame Bridge
Authors: Yang Guang Qiang , Liu Jin Yu , Zou Yang , Zhou Shui Xing
Published: July 2014

Three kinds of structural pier forms – double thin wall pier, combined pier and single pier – were designed for prestressed concrete continuous rigid frame bridge with pier height that overs 100m. Taking an example of Hezhang bridge which is located in Guizhou province, the elastic stability at the largest cantilever stage under action of wind loads were analyzed and concrete volume of pier and cushion cap were calculated. The results indicate that the variable cross-section pier has a better performance of elastic stability than that of uniform pier. Considering the construction difficulty, stability performance and material consumption, recommendations for selecting the structural type of pier with height between 100 m~200 m were given.
Temperature Control Technique and Analysis of Mass Concrete in the Pile Cap of Main Pier in Yangtze River Bridge
Authors: Su Jun , Zuo Guo Wang , Li Wei
Published: July 2014

The paper analyzed the temperature control technique measures of mass concrete in the pile cap of main pier in Yangtze River Bridge. Consider the effect of the cooling pipe, ANSYS finite element analytical software was used to calculate the temperature field of the pile cap in the construction, the distribution rules of the temperature field was simulated by finite element analysis. It is shown that the cooling effect of the mass concrete is obvious by using cooling water pipe, the finite element calculation results can be used to lead to the design and construction. It also provides the reference to develop a reasonable temperature control solutions during the construction of the similar mass concrete.
Time-History Analysis of Pre-Stress Loss of Four-Spans Pre-Stressed Continuous Rigid Frame Bridge
Authors: Liu Jin Yu , Zou Yang , Zheng Peng Peng
Published: July 2014

Taking Guizhou Hezhang Bridge as the engineering background, this paper used Midas/Civil FEM platform to study the pre-stress loss and deformation of main girder in bridge construction stage and completion stage on the basis of concrete creep and shrinkage formulas provided by “Highway reinforced concrete and pre-stressed concrete bridge design code (JTG D62-2004)” and the US bridge standard – AASHTO LRFD – published in 2005. The results showed that the pre-stress pipeline friction losses calculated according to the two standards are basically the same. The loss of the anchor deformation, elastic compression and tendon relaxation obtained by AASHTO LRFD is slightly greater than that obtained by JTG D62-2004. However, due to the different computing models, both pre-stress loss and the main beam deflection caused by concrete creep and shrinkage obtained by AASHTO LRFD are larger than that by JTG D60-2004.
Effect Evaluation of Prestressed Carbon Fiber Plate Reinforced Bridges in Critical Condition
Authors: Jiang Feng Wei , Zhang Zhi Qiang , Guo Wen Jie
Published: July 2014

With a bridge which appearing disease cause a insufficient carrying capacity as background, this paper used bridge finite element analysis software combined with field loading test to analyze Prestressed Carbon Fiber Plate reinforcement effect .The results show that the reinforcement method has a remarkable effect in improving the structure stiffness and the natural frequency of vibration , improving the carrying capacity of old bridge and overall security.
Study on Static and Dynamic Load Test of Huaronggou Bridge
Authors: Wang Wei , Wang Lei
Published: July 2014

HuaRonggou bridge is a continuous beam bridge, which is built recently in Inner Mongolia. In order to test the service behavior of structures, while the bridge is working in the condition of static and dynamic load, and evaluate whether the construction quality is to meet the design requirements, the static and dynamic load test is carried out. This paper describes the principles and methods of the load test, the measurement of the stress and strain, and dynamic characteristics of the bridge structure. By finite element analysis, it can provide the operation and supervision with benchmark data, and also offer the reference to constructions of the same kind of bridge.
Traveling Wave Effect Analysis on Fabricated Box Girder Bridge Based on ANSYS
Authors: Liu Qian Hui , Zhang Zheng Xin
Published: July 2014

This paper analyzed the seismic response of fabricated box girder bridge considering the traveling wave effect based on ANSYS. Take a multi-connected continuous girder bridge over sea island as the research object, consider the effect of pile-soil interaction, the internal force and deformation characteristics of substructure, coping and expansion joint of the bridge are analyzed under the traveling wave effect. Traveling wave effect have some influence on the internal force and deformation of substructure and coping, but the influence is not so strong. Meanwhile the relative displacement of expansion joint and collision force of beam end are influenced significantly, and the risk of girder falling is increased.
Construction Scheme Research of Long-Span Cable-Stayed Bridge with Three Pylons Based on Structure Stability
Authors: Deng Xiao Guang , Liu Mu Yu
Published: July 2014

This paper took the Wuhan Erqi Yangtze River Bridge as an example, using MIDAS software to simulate the working procedure of cantilever construction, and established the finite element model of composite girder cable-stayed bridge with three pylons during construction stage. Based on the first kind stability theory, this paper researched the influence of the different construction scheme, the setting of temporary pier, temperature load, and unbalanced construction load on the structure stability of composite girder cable-stayed bridge with three pylons so as to obtain the linear elastic stability safety coefficients of structure during construction stage, and then provided the theoretical explanation to the reasonable construction scheme and safety construction. The results showed that for the Wuhan Erqi Yangtze River Bridge, its linear elastic stability safety coefficients of structure during construction stage have met the code requirement. Besides, the buckling mode changed from the longitudinal buckling of pylon to combined instability of pylon and girder. Furthermore, the setting of temporary pier was reasonable, which effectively improved the linear elastic stability safety coefficients. Finally, temperature load and unbalanced load in construction reduced the linear elastic stability safety coefficients.
Parsing on the Processing Methods of Seamline for Concrete Bridgewith Seamless Broaden Technology
Authors: Li Fang Yuan , Guo Xiao Shuai
Published: July 2014

In view of the difference in design, construction and the usage of the old and the new bridges, there are always stress defects in seamline because of the concrete creep and shrinkage, temperature effect and prestress loss, which seriously affect the service and driving safety. The current ways in foreign and domestic, such as plant steel and semi-rigid connection method, are passive processing based on structure, can’t ensure the long-term performance. According to the three direction stress existing in the seamline, this paper decomposes the material contribution and structure influence, putting forward respectively using material and structure to overcome the adverse situation, using material to remove partial long-term effect, and through the sensitivity analysis of related parameters, to make the structure bearing the rest adverse effect, ensuring the long-term performance of seamline. The relevant conclusion can provide reference for the design and construction of the concrete bridge seamline.
Practical Calculation of Cable-Stayed Arch Bridge Lateral Stability
Authors: Lu Wei , Zhou Ding , Chen Zhi
Published: July 2014

A long-span cable-stayed arch bridge is a new form of bridge structure that combines features of cable-stayed bridges with characteristics of arch bridges. In the present study, we derived a practical calculation method for the lateral destabilization critical loading of cable-stayed arch bridges during the construction process based the energy principle. The validity of the method was verified with an example. The calculation method provides a quick and efficient way to evaluate the lateral stability of a cable-stayed arch bridge and a concrete filled steel tubular arch bridge during the construction process.
Research on Design and Construction of Main Pylon of Maanshan Changjiang River Highway Bridge
Authors: Liu Qi Yang , He Min , Li Xiao Long , Zhang Qiang
Published: July 2014

The subject investigated of this article is Maanshan Changjiang River Highway Bridge, which is a prestressed concrete cable-stayed bridge with three arched pylons. With the analysis of the details in design and construction of the main pylon of bridge, such as the set of the beams, the design of curve-shaped pylon and some significant parameters, it provide feasible experience in multi-pylon cable-stayed bridge. This article established the simplified finite element model with the software MIDAS/Civil and analyzed the load carrying capability and the deformation at the finished state of the bridge.
The Changes of Internal Forces and the Reliability of Curved Bridge Taking the Cross-Sectional Design of Axial Symmetrical
Authors: Zhao Zheng Jiu , Gao Jing Hong
Published: July 2014

Taking a bridge of 160m long variable cross-section prestressed continuous curved box-girder as the research object and analyzing the cross-sectional design of axis with axial symmetrical or axial non-symmetrical to research the structure forces change of the upper part of bridge in different curvature. In order to test and verify the variable cross-section of prestressed continuous curved box-girder bridge is safe and reliable via cross-sectional design with axial symmetrical instead of axial non-symtrical within a radius of curvature of the interval. Creating the straight bridge and curved bridge models with different radius of curvature in same span by Midas/Civil to compare their structure forces.
Research on Prestressed Loss in Curving Hole of Prestressed Concrete Structure Caused by Frictional Resistance
Authors: Li Chen , Zhang Kai Yin , Fan Zhong Lin
Published: July 2014

Excessive prestressed loss in prestressed concrete continuous beam bridge and continuous rigid frame bridge causes structures appearing different types of diseases. By theoretical analysis on computational expression of effective prestress in curving hole, and distribution of contact stress and experiment about prestressed loss caused by frictional resistance, this paper points out the disadvantages of current effective prestress formula in curving hole. According to the research on the major influencing factors of prestressed loss in curving hole-contact status and friction coefficient μ, it plays a remarkable role on the further analysis of prestressed loss in curving hole.
Simulation Analysis on Construction of Liangjiang Great Bridge
Authors: Si Min , Bie Shi Xiang , Li Bao Lai , Fan Xiao Chun
Published: July 2014

Liangjiang Great Bridge is the prestressed concrete continuous rigid frame bridge with high pier and long-span. It adopts the segmented cantilever construction method. The process of its construction is the key to the construction control simulation analysis. In this paper, based on the characteristics of the bridge construction, finite element method is used to establish the simulation model. Cantilever construction stages and closure stages of bridge are simulated and analyzed. The structure deflection diagrams in the each section construction and the later construction considering the creep and shrinkage of concrete are obtained. The initial camber of each segment is given in the construction. The stress characteristics of key section are analyzed in the construction process. It provides a basis for monitoring and on-site construction of bridge and the reference for similar bridge construction.
Study on Urban Sustainable Development Based on System Dynamics
Authors: Li Jian Ping , Duan Han Ming , Qiu Min
Published: July 2014

A system dynamics model of urban sustainable development is provided, and the impact of different development modes on the city system is explored. Statistical data of Yinchuan, a city in northwest China, is utilized to build the model which shows the population-economy- environment relationship. Four development modes are proposed, and they are maintaining the status quo, developing secondary industry, developing tertiary industry, developing economy and society together. The system dynamics model is employed to analyze the interaction between population, economy and environment. According to simulation of the system dynamics model, impact of development modes on the city system is predicted. Furthermore, suggestions on improving the sustainability of urban development are put forward. In a word, the paper presents a new idea for the study on urban sustainable development in northwest China.
The Construction Technology of T-Type Rigid Frame Bridge No.0 Pouring Section
Authors: Shi Bao Quan
Published: July 2014

Because of T-type rigid frame bridge pier top cast segments’ structure is complex,embedded parts,steel,each prestressing tendons and it’s channels,anchorage intensive staggered,force complex,greater difficulty of construction.So select the construction plan is very important,the quality of the program will directly affect the progress of the construction and the quality of construction. There are many options of stent design,most used is attached to the cantilever bracket.In this paper, several commonly used form of stent were introduced.
Research on Building Integrated Urban Rail Transport System Model of the Hohhot
Authors: Li Cheng Bing , Li Min , Guo Rui Xue
Published: July 2014

With the improvement of China's international status, integrated transport concept has become firmly rooted. Integrated urban rail transport system as part of comprehensive transportation has become an important means to ease urban traffic problems, is not only an urgent demand for transport services and residents, but also the need to build a conservation-oriented society. In this paper, for the current problems of urban transport ,research on building the rail transportation system of Hohhot, considering from the city policy, technology, economics, management aspects, etc., demonstrate the reasonableness of the transport system construction, technically advanced and the economic viability and feasibility of construction management while analyzing factors affecting the construction of rail transportation system, thus providing a scientific basis for investment and decision-making.
The Measure Index System and Evaluation Research of New-Type Urbanization
Authors: Xu Wei , Wang Guo Ying
Published: July 2014

The new-type urbanization is the inevitable demand of urban sustainable development. It is an effective way to promote the competition of city. The connotation characteristics of the new-type urbanization are analyzed theoretically. The scope of the research covers to construct the index system of the new-type urbanization. Then model is established based on principal component analysis method for assessing the new-type urbanization level. The effort of this study is to carry out new empirical analysis for evaluation of various cities in Inner Mongolia. This paper provides the quantitative background to verify the rationality and feasibility of the new measurement index system.
The System Evaluation of Passenger Station Travelers Satisfaction
Authors: Li Bing , Li MIN
Published: July 2014

With economic development, abundant modes of transport, the quality of people's in demand for travel gradually increases ,and therefore optimizing and improving passenger station service system seems imperative. In order to improve the quality of passenger service, we shall establish a scientific and reasonable evaluation system, through the terminal passenger satisfaction evaluation to determine whether passenger service to make visitors satisfied and propose specific measures to improve service quality for lower service satisfaction. In this paper, Hohhot, as an example, we conducted evaluation studies for passenger station service, and put forward the corresponding improvement suggestions to improve passenger satisfaction, but also proved the feasibility and practicability of the model established in terms of passenger station’s travelers satisfaction evaluation. The study not only can improve the competitiveness of transport companies but also conducive to the future development of the passenger market.
Analysis the Transformation and Upgrading Path of the Ports in Pearl River Delta
Authors: Ao Qing Feng
Published: July 2014

Through comprehensive analysis of all aspects of the environment of the Pearl River Delta ports, and the article carries out reasonable positions for ports. Using Grey Relational Theory calculated the related degree between ports and industry. Using the Industry aggregation principle which is based on the Location quotient researches the gathering and transferring trend of industry which is closely related to ports. Further this paper analysised the direction of the transformation and upgrading of the ports. And we can provide the transformation and upgrading path of ports in the Pearl River Delta.
Review on the Berth Allocation and Quay Cranes Assignment Problems in Container Terminal
Authors: Zhou Yong Liang , Wang Ri Dong , Zhao Qing Yu , Cao Jin Xin
Published: July 2014

In recent decade, containers become an important part of the world's economy. With the growth in offshore trade, problems about container and port are attention by research scholars in many countries. In the study on the problem in container ports, Berth Allocation and Quay Crane Scheduling problem are very important; optimization of the two problems can improve the efficient of container ports. In this paper, we describe and classify the main Berth Allocation Processes and Quay Crane Scheduling and present a survey of methods for their single optimization and integrate optimization.
The Integrated Berth and Quay Crane Scheduling Problem in Container Terminals
Authors: Wu Chun Ji , Chen Li Hua , Zhao Qing Yu , Cao Jin Xin
Published: July 2014

With the current development of the berth and quay crane in China, minimizing the total time of all ships stopping at the port, and maximizing the utilization rate of quay cranes to reduce the waiting time in the queue at the anchorage are the key to success in the field of container terminals. The objective of this paper is to minimize the total time of all stopped ships at the port and to maximize the operation efficiency of quay cranes. Compared with single berth and quay crane allocation, this paper analyzes the berth-quay crane as a whole, and an integer programming model with some constraints is built for this problem. Then the heuristic algorithm is used in this paper to optimize the problem and gain the solution. This paper provides a guide for practical operation.
The Survival of Urban Tourism Development under the Background of Religious Resources - In Baotou, for Example
Authors: Yin Bai , Xu Wen Can
Published: July 2014

Religious resources are rich in our country, various kinds, with the continuous development of urban tourism, with religious theme of religious tourism resources more and more. There are too many people in urban tourism development of religion in pay attention to economic benefits, and religious resources calls for the protection are more and more high. To development of religious tourism resources in the city at the same time, made religion a better utilization of resources and protection, it need us to take seriously the survival of urban tourism development under the background of religious resources problem.
Parking on University Campus: How to Avoid the Tragedy of Commons?
Authors: Wang Zai Tao , Wang Xiu Juan
Published: July 2014

In order to thoroughly explore the causes of tragedies about Chinese university campus motor vehicle parking, the paper, viewing from the campus motor vehicle drivers’ perspective, adopts the game theory to study the process of the campus drivers’ interaction when parking. It is discovered that a trust game is established between the motor vehicle drivers, who frequently using parking as a Pareto inferior solutions, thus generating coordination failure. All motor vehicle drivers tend to overuse the campus parking, leading to the campus parking commons tragedy. In the conclusion section, solutions are given to solve the university campus parking problems.
Adaptive Reliable Shortest Path in Discrete Stochastic Networks
Authors: Pan Yi Yong
Published: July 2014

This paper addresses adaptive reliable shortest path problem which aims to find adaptive en-route guidance to maximize the reliability of arriving on time in stochastic networks. Such routing policy helps travelers better plan their trips to prepare for the risk of running late in the face of stochastic travel times. In order to reflect the stochastic characteristic of travel times, a traffic network is modeled as a discrete stochastic network. Adaptive reliable shortest path problem is uniformly defined in a stochastic network. Bellman’s Principle that is the core of dynamic programming is showed to be valid if the adaptive reliable shortest path is defined by optimal-reliable routing policy. A successive approximations algorithm is developed to solve adaptive reliable shortest path problem. Numerical results show that the proposed algorithm is valid using typical transportation networks.
Research and Application of Activity-Based Costing in Drop and Pull Transport Enterprises Cost Management
Authors: Wen Jing , Zhan Bin , Zhang Xiao Hui
Published: July 2014

In order to realize the accurate accounting, accurate tracking and effective control of the cost of drop and pull transport enterprises, this paper established the costing model based on TDABC and combined with relevant cases to explain its implementation process. The cost accounting model makes cost accounting more convenient and economic, resource allocation and activitiy process more intuitive and clear, effectively improves the accuracy of cost accounting of drop and pull transport enterprise. TDABC will avoid the offset of costs and benefits in the traditional cost method, help enterprises to understand the overall development of its own operating characteristics and provide new ideas.
Research on Prediction of the Amount of Regional Airport Aviation Based on GM (1.1) Model in the Gray System
Authors: Peng Ai Lan , Dong Ke , Yang Wei Na
Published: July 2014

This paper discussed the analysis of the regional airport air volume forecast based on the classic GM (1, 1) model in the grey system theory. Focused on the impact of predict of the data by application of the original data sequence after preprocessing by the strengthen operator and weakening operator in sequence operator. Through the analysis and comparison of the concrete prediction of Beijing-Tianjin-Hebei region airport aviation data, found that in the process of predicting of the region Airport air volume, introduction of weakening/strengthen operator by combination with the area practical situation, as the result of the regional airport aviation prediction is conformity with the practical situation and forecasting precision is better.
Research on Supply Chain Network System Based on Industrial Cluster
Authors: Chen Yong Xiang , Liu Jin Biao , Zhang Nan
Published: July 2014

The reliability of supply chain network system design and optimization based on the industrial cluster was discussed, that is, the operational platform of multi-objective supply chain network was moved to industrial cluster, so the platform has the effects of both regional radiation and scale of economy. Instead of some static research methods such as former traditional mathematic planning, systematic and dynamic analysis, this paper put forward a coordinative mechenism construction, this mechenism used dynamic simulation method which combined the supply chain system with industrial cluster multi-objective weighing in the region, the mechenism should be cost efficient and satisfy the application in the industrial cluster radiation region, the mechenism should integrate all possible resources in the industrial cluster and consider heterogeneity, layout, nonlinear, limitation and dynamics of the supply chain network system.
Study of Passengers’ Route Choice of Urban Rail Transit Network under the Emergency
Authors: Li Qian , Qin Yong , Wang Zi Yang , Zhang Lin Qing
Published: July 2014

In this paper, through the analysis of emergency’s impact on passengers’ route choice, a passengers’ route choice model was found of urban rail transit net and based on the model to analysis the instance. Through comparative analysis the impact of offering guidance by supplying information, the result showed that under the guidance by supplying information, the passengers is divided due to their own preferences on different paths property, comparing to no information to guide, the system has been optimized.