bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis of Mechanical Characteristics for Continuous Rigid Bridge with Corrugated Steel Webs
Authors: Song Sui Di , Li Xin , Zhu Bing , Duan Lun Liang
Published: July 2014

In order to study the mechanical characteristics of continuous rigid bridge with corrugated steel webs, a bridge of this type with a main span of 100 m is analyzed in this paper. Three models of the whole bridge are established by MIDAS/Civil software, the internal force and deformation of the bridge under the action of dead load, live load and prestressing force were analyzed; results of different modeling methods were compared and the structural checking computation was also finished. With the help of calculation results, the design rationality of the continuous rigid bridge with corrugated steel webs was analyzed finally.
Analysis of the Arrangement of Prestressed Steel in Web of Continuous Concrete Box-Girder Bridges
Authors: Qiao Lan , Zhang Shao Wen
Published: July 2014

Concrete continuous box- girder bridges have a large proportion in small span and long span bridges, and it has very broad prospects for development. Along with the large-scale construction of this kind of bridge, various problems have also emerged, especially the damage of RC beam’s diagonal section in bridge girder deflection. It always appears the inclined cracks in webs which cause by principal tensile stress, so it will be the potential damage to the whole bridge. However, the existence of the vertical prestress, will make the principal tensile stress of box girder in greatly reduced. So as to make cracking resistance performance of diagonal section is better than the ordinary reinforced concrete bridge. For an engineering example, this paper puts forward several different vertical prestressed steel arrangements. Based on different decorate a form of vertical pretressd bridge girder under stress numerical simulation, it is concluded that bridge’s web principal tensile stress distribution and its variation law, and then optimize the vertical reinforcing steel arrangement, improve the overall safety of bridge structure. It can provide the reference in the process of construction when we face the similar problems in the future.
Mechanical Properties of Wood and Timber Bridge Evaluation
Authors: Yu Ling Ling , Wang Jie Jun , Huang Te
Published: July 2014

Wood possesses material properties that may be significantly different from other materials normally encountered in structural design. It is necessary for the engineer to have a general understanding of the properties and characteristics that affect the strength and performance of wood in bridge applications. This paper discusses the mechanical properties of wood, including elastics properties and strength properties. Timber bridge are often exposed to harsh environment conditions. Over time, this exposure can lead to deterioration. In turn, this deterioration may lead to a loss of structural integrity that is detrimental to the structure and its users. Timber structural elements are susceptible to degradation due to environmental and loading conditions. A variety of inspection techniques can be employed to locate damage and decay in timber members in order to maintain structural performance. Methods of non-destructive techniques for timber bridges are getting more and more important. This paper presents several non-destructive methods to timber bridge structures.
Study on the Vehicle Load of Highway Bridge Based on Measured Data
Authors: Zhao Chuan , Dou Yuan Ming , Sun Ji Shu
Published: July 2014

Vehicle load is one of the most important factors to influence the structural security and applicability of the highway bridge. In this study, in order to learn the situation of the vehicle loads on expressway in recent years, and to provide the basic standard for highway bridge load, collected the dynamic data of nearly 4000 trucks through the traffic investigation of a section of 24 consecutive hours on the expressway in Hebei province. According to the actual survey results for statistical analysis and the principle of equivalent fatigue damage, the model of 5 kinds of daily operation vehicle load was deduced based on the measured data and the fatigue loading spectrum was established. The results of the survey can provide references for the design of the highway bridge fatigue load and fatigue assessment in our province in the future.
Fatigue Phenomenon Analysis of the Steel Railway Bridges with Short and Medium Span
Authors: Gutiu Stefan I. , Moga Catalin
Published: July 2014

This paper presents the fatigue checking methodology of the steel bridge members according to Romanian norm SR 1911-98 and EN 1993-1-9. A comparative analysis regarding the fatigue checking of the main girders of a 30 m span steel railway bridge is made. The concluding remarks and observations are useful in the design activity of this type of structures.
Research Status of FRP-Concrete Composite Beam/Bridge Deck Systems
Authors: Yang Li Hua
Published: July 2014

Fiber reinforced polymer (FRP) has widely used in civil engineering due to their high strength-to-weight, high stiffness-to-weight ratios, and corrosion resistance. To solve the corrosion of the reinforcing steel in the bridge engineering and reduce the initial cost, FRP-concrete composite structure has been considered as the most effective composite form. A detailed research status survey of FRP-concrete composite beam/deck systems and their construction applications in civil engineering is presented. Several problems in future research are put forward.
Control Technology on Jacking Closure Construction of Liangjiang Great Bridge
Authors: Zhang Hao Jie , Peng Zi Qiang , Li Bao Lai , Fan Xiao Chun
Published: July 2014

Prestressed concrete continuous rigid frame bridge is widely used in bridge engineering. Its closure is one of very important working procedure in the bridge construction. In this paper, taking Liangjiang Great Bridge in Xinxu Highway as an example, the methods for determining the Jacking force and displacement are discussed. The implementation of the process and construction technology of closure jacking scheme is introduced in detail. Through the finite element simulation, the stress state of on the structural pusher is analyzed. And the maximum stress of the pier bottom and the displacement of the pier top are obtained. They can verify the feasibility of the scheme. Monitoring results from the site construction verify the safety of the scheme. The method has a certain reference value on jacking closure construction for the similar bridge.
Temperature Correction around Anchorage Zones of Cable-Stayed Bridge in Field Test
Authors: Luo Jia Yi , Zhang Xie Dong , Liu Liu , Guo Xing Mao
Published: July 2014

Based on the working principle of vibration wire strain gauge, two influence factors were analyzed and the temperature correcting equation was given. Furthermore combined with the anchorage zones model test of Xiaoshawan Yellow River Bridge in Inner Mongolia, temperature correction coefficients of test dates were found by linear fitting function of MATLAB, and then the test datum were corrected that achieved very good effects.
The Response Analysis of the Train-Bridge System under Seismic Action
Authors: Xia Wen Min , Liu Xue Mei
Published: July 2014

This article based on bridge structural dynamics, vehicle dynamics and soil dynamics theory, set up the practical space mode, with an example of a dual-line 32 m single box section beam on Beijing-Shanghai Railway Line. According to the typical soft soil sites of Shanghai, the dynamic response of the bridge was analyzed by the large finite element software ANSYS under seismic action. Moreover the impact about the dynamic interaction of pile-soil-structure affecting on the design of high-speed railway bridges was got which will provide reference and basis for the construction and design similar project.
Research on Simulation and Analysis of Tensioning Process of Suspender for Combinative Bridge with V-Type Pier Continuous Rigid Frame and Arch
Authors: Li Zi Qi , Fan Yan Yan , Bai Jia Feng , Li Yan
Published: July 2014

The combinative bridge with V-type rigid frame continuous concrete beams and concrete filled steel arch bridge is a hyperstatic structure at internal and external, the construction process is complex, the structure is occurring system transformation with construction process. The tensioning process of hangers has a direct impact on the force of suspender final bridge and the stress state of the structure. The influence of deformation and stress of structure are studied with one-step tensioning and multi-step tensioning, Based on finite element simulation of construction process for the combinative structure with V-type rigid frame and arch of Nianchu River Bridge. The tensioning construction process of suspenders is forward on considering the actual situation of the bridge.
The Application of Pushover Method in Complex Bridge Seismic Design
Authors: Gao Xiu Yun
Published: July 2014

Elasto-plastic seismic response analysis of complex bridge requires large computation, thus in practical engineering design this method can be simplified according to finite energy principle, finite displacement principle and Pushover method or other approximation algorithms. Finite energy principle and finite displacement principle are applied to piers with simple damage mode, and the two principles differ in structure’s natural mode of vibration. Pushover applied to complex structures which can’t be analyzed as single pier. Pushover gives maximum seismic response by static nonlinear analysis, and current Japanese specification adopts Pushover for complex bridge seismic design such as continuous rigid bridges.
An Improved Flutter Analytical Method for Bridge
Authors: Chen Guo Fang , Xu Wei , Yu Bao Chu
Published: July 2014

With the help of the commercial FE package ANSYS, this paper presents a finite element (FE) model for analyzing coupled flutter of long-span bridges. This model models the aero-elastic forces acting on the bridge utilizing a specific user-defined element Matrix27 in ANSYS, by which stiffness and damping matrices can be expressed in terms of the reduced wind velocity and flutter derivatives. Taking advantage of this FE model, Transient dynamic analysis is carried out to determine the dynamic response of a structure under the action of pulse load, of which the damping ratio can be obtained by considering response peaks which are several cycles apart. The condition for onset of flutter instability turns into that, at a certain wind velocity, the structural system incorporating fictitious Matrix27 elements does simple harmonic vibration with zero damping ratios or near zero one. The damping ratio is completely calculated in post-analysis of ANSYS and the initial frequency is given by any value and the last frequency can be got by iterating several times. In order to validate the developed procedure, a classical case study on three hundred meter simple supported beam is provided.
Discussion about the Limit Span of Self-Anchored Suspension Bridge and Influencing Factors
Authors: Huang Qiong
Published: July 2014

Based on the material strength limit conditions of cable and stiffening girder, the static analysis of self-anchored suspension bridge was calculated. The stiffening girder of self-anchored suspension bridge was assimilated with elastic foundation girder. Considering of the action of both axial force and bending moment, the limit span of self-anchored suspension bridge was discussed. The limit span equation of three-span self-anchored suspension bridge with two towers was deduced. The influencing factors, such as ratio of rise to span of main cable, cross-sectional area and spacing of hangers, are studied, and the corresponding limit spans were given. It can provide valuable reference for the primary design of self-anchored suspension bridge.
Research on Skew Coefficient for Stresses of Skewly Supported Three-Span Continuous Box Girders
Authors: Liu Liang
Published: July 2014

Skewly supported continuous box girders have special mechanical properties compared with common continuous box girders. Skew coefficient for stress of skewly supported three-span continuous box girder is introduced to reflect the decrease degree of the normal stresses at the cross section of the middle span of the box girder. The finite element models of the skewly supported three-span continuous box girders with different skew angles are established by applying the SHELL63 shell element in software ANSYS. The variation of the skew coefficient for stress at different calculation points of middle span cross section under concentrated load is analyzed and the corresponding influence law is revealed. Research results show that the skew coefficient for stress of top slab is different from that of bottom slab at the cross section of the skewly supported three-span continuous box girder. The skew coefficient for stress of top slab is smaller than that of bottom slab. Skew coefficient for stress decreases with the increasing of the skew angle. Because of the shear lag effect, the minimal skew coefficient for stress of flanges occurs at the free tip of cantilever slab while the maximal skew coefficient occurs at the intersection of web and flange slabs.
Static Loading Test and Theoretical Analysis of a Pedestrian Bridge
Authors: Zhang Can , Ma Rui Sheng , Tian Li
Published: July 2014

Loading tests of pedestrian bridge are important procedure for checking the carrying capacity and the construction quality of structures. Static loading test and theoretical analysis of a pedestrian bridge are carried out in this paper. According to a practical engineering, a three-dimensional finite element model of the pedestrian bridge is established using software SAP2000. The strain and vertical deflection of the bridge subjected to the static load are measured and compared with the theoretical value. The verification coefficient and the relative residual deflection under static load are calculated according to the technical specifications. The results show that the actual behavior of the bridge satisfies the requirement of technical specifications and the bridge works well. The static loading test and analysis can provide useful reference for the similar structures.
Possibilities of Mathematical Modeling Utilization in Brownfield Regeneration Efficiency Assessment
Authors: Endel Stanislav , Berankova Eva Wernerova , Kuda František
Published: July 2014

Brownfields areas are one of the biggest problems of contemporary communities. These are old abandoned structures without adequate use and they cause many social, economical, environmental, medical and urban problems. So, it is possible to say, that brownfields are a very topical issue and its solution is fully in compliance with the principles of sustainable development. It is obvious, that brownfield regeneration and the above problems elimination have a significant positive impact on overall development of former brownfield site and its surroundings. So, a possibility of a forecast of this development based on mathematical model tools offers. Modified Dynamic Model (MDM) is one of these tools. This paper describes the possibilities of locality development modelling in the case of brownfield regeneration in the MDM environment. All these possibilities are shown on a practical example of chosen Czech brownfield for better understanding.
Study on Concrete Durability Design for Penang Second Bridge of Malaysia
Authors: Liu Song , Qin Ming Qiang
Published: July 2014

Penang second bridge in Malaysia is designed as a cable-stayed bridge based on British specification. For the requirement of service life of 120 years for this bridge, some measures improving the durability have been proposed in this article. Environmental type and action, condition of raw materials in local, characteristics of elements and requirements of durability indexes for British standard are introduced. Especially, a comparison between British and China’s specification has been made in this article. Mix proportion has been optimized and pulverize fuel ash cement-GGBS-silica fume binder is adopted to prepare mixes for different structure elements. Finally, the measures of durability for Penang second bridge have been set up.
The Pier’s Deformation and Load Capacity Calculation of Bridges in Construction with Movable Die Carrier
Authors: Yang Wan Li , Ju Xiao Hui , Bian Li
Published: July 2014

A large horizontal force will be generated to the pier when the movable die carrier walks to the next span, especially for the high-pier bridges. thus a horizontal deflection will be produced as well as cracks developed. With solid degenerated virtual laminated element program, considering both geometrical and material nonlinearity, the mechanical performance of the pier under a horizontal force on the top of the pier is simulated and illustrated, and the cracks emerged at the bottom part of a high pier in the process of the movable die carrier walking to the next span is analyzed. The results show that when the cracks emerged, the stress of the bars and the stress of the concrete in the compression zone is quite small, hence the safety of the bridges in the construction stage is confirmed.
Design of an Experimental Prestressed Arch Pedestrian Bridge Made of UHPC
Authors: Tej Petr , Tejová Alena , Kolisko Jiří
Published: July 2014

This paper presents the design of an experimental prestressed arch pedestrian bridge made of ultra-high performance concrete (UHPC). The structure is designed as a permanent single-span bridge with an intermediate deck. The span of the bridge structure is 58.5 m, the total width is 5.1 m, and the clearance width of the bridge is 4.5 m. The main structure of the bridge consists of two prestressed beams made of UHPC with dispersed steel fibers. The main beams are composed of prefabricated parts, subsequently prestressed.
Dynamic Analysis and Test Validation for Continuous Girder Bridge
Authors: Yang Ya Xun , Liu Peng
Published: July 2014

With the rapid development of technology of bridge, bridge as an important part of the traffic network, the safety of its operations was getting more and more attention by people. In order to ensure the bridge can be safe and reliable operating, the newly built bridge testing had become a necessary measures. In this paper, a three span continuous box girder bridge (28+36+28m) was taken as an example, To analyze and calculate its dynamic characteristics, the finite element software MISAS was used. And it was verified through experiments.
Effects of Curvature Radius on Seismic Response of Curved Box-Girders Bridge
Authors: Zhao Qing
Published: July 2014

Taking an engineering design case about a three-span uniform section continuous curved box-girders bridge of city viaduct,this paper sets up a finite element calculating model for the curved box-girders bridge by means of finite element analysis program ANSYS and researchs the influence of dynamic characteristic and seismic response on curved box-girders bridge with the different curvature radius under the same span. The analysis results show that in the same span of curved beam , the low-level frequency impact of changes in different curvature radius of the curved beam bridge is larger,the curvature radius is an importance parameter which influence on dynamic characteristic, and have significant influence on tangential stiffness、radial stiffness and seismic response of curved box-girders bridge.
Impact Response Spectrum for Design of Ship-Bridge Collisions
Authors: Wang Jun Jie , Yu Zhi Ran
Published: July 2014

Due to the complexity involved and limited study on the topic, the equivalent static method, adopted in the current codes for structural design of bridges under ship collisions, does not take into account the dynamic amplification effect correctly. An accurate assessment of impact force based on refined numerical simulation is time consuming and is normally too complex for ordinary design procedure. Herein, with reference to the earthquake response spectrum method, an impact response spectrum method, which considers the dynamic amplification effect and is efficient for design, is proposed. Through refined numerical simulations of ship-rigid wall collisions, 81 impact force time histories associated with 9 typical ships under 9 velocities are obtained. The dynamic magnification factor (DMF) of single-degree-of-freedom (SDOF) systems with different periods and damping ratios experiencing the 81 impact force time histories are then studied. The relationship of DMF and period under different damping ratios, i.e. the DMF spectrum, is yielded by statistical analysis, based on which the impact response spectrum is obtained. Finally, the design combination method for multi-degree-of-freedom based on the impact response spectrum of SDOF is discussed for a continuous beam bridge.
Nonlinear Analysis of Cable-Stayed Bridge
Authors: Mo Hai Hong
Published: July 2014

The nonlinear basic theory and nonlinear influence factor of cable-stayed bridge has been introduced. Quantitative analysis to the sag effect, beam-column effect and large deformation effect has been done based on a cable-stayed bridge. Analysis show that the sag effect, beam-column effect and large deformation effect of cable force is not obvious, but the sag effect should not been ignored in the calculation of the main beam.
Reliability Analysis of Half-Through Concrete-Filled Steel Tubular Arch Bridge
Authors: Wang Chen Yan
Published: July 2014

The object of this paper analyzes the reliability of half-through concrete-filled steel tubular arch bridges. Load and resistance parameters are treated as random variables. The statistical parameters are based on the available literature, test data and survey results. Reliability indices of main components of the bridge structure are calculated by iterations using the first-order second-moment method. The half-through concrete-filled steel tubular arch bridge is the typical series system and the reliability index of the system is calculated by the PNET method. The study shows that the reliability indices of suspenders are relatively larger than others, and the correlation coefficients among the same members have high relativity index.
Strategy of Sustainable Development of City Streets Renovation - Taking the City of Baotou Steel and Arding Street Design as an Example
Authors: Zhao Yong Qiang , Yang Yan , Zhao Liang
Published: July 2014

The city development and population growth give lots of environment and resource shortage pressure of the city. The ecological environment, energy and water are the main support for the sustainable development of city. The development of low carbon and ecological city is the route, which must take Chinese modernization and sustainable development. Taking the city of Baotou steel and Arding street design as an example ,from the aspects of city layout, low carbon city energy, saving water city, the climate adaptability of passive building with blocks of Streets Renovation in sustainable development are analyzed, Hoping for future Street update provides a theory and method.
Research on the Effect of Bridge Guardrail to Load Distribution
Authors: Zhou Yong Jun , Xu Ting Ting , Zhao Yu , Yang Min
Published: July 2014

In order to study the effect of guardrail to main girder, simply supported beam load test is relied on to measure the deflection of main girder in different conditions, then whether guardrails involved in the stress of main beam or not in theory is analyzed to draw the conclusion that considering the guardrail in stress is closer to the actual stress of bridge and effects on stiffness of main girder are different in lateral bridge. Based on above four hypotheses are proposed and the guardrail along the bridge transverse triangular distribution to the 14% deck is in good agreement with the actual situation according to the equivalent height.
Research of the Evaluation of the Sustainable Development of Xi'an Urbanization
Authors: Zheng Lei , Wei Hai Min
Published: July 2014

The weakness of the existing system of urbanization comprehensive evaluation is: evaluation Indexes were not comprehensive, and the evaluation system can’t reflect the real situation; analysis method was complex, and difficult to operate. We established evaluation index system from the economic development, social development, living, environment, infrastructure, spatial density, and urban-rural gap. We used entropy and comprehensive evaluation method to process and analyze the indicators. The results show that the quality of urbanization development is obviously different in Shaanxi Province, the effect of secondary cities is not obvious to promote the development, and the internal gap is still large in provincial cities and sub-index level.
Research on the Key Techniques of Zhanjiang Donghai Island Bridge
Authors: Yuan Wei Guo , Liu Mu Yu
Published: July 2014

The Dissertation, relying on the construction of Zhanjiang Donghai Island Sea-crossing Bridge and adopting the finite element analysis method to calculate the wave force of substructure, proposes the bridge structure analysis method based on dynamic time history of wave loads. Through emulation analysis, structural load effect under waves is attained, making it a theoretically rational foundation for the structure selection and reinforcement of substructure of Donghai Island Bridge and having important theoretical significance and practical value in guaranteeing the bridge security under any seismic sea waves.
Sensitivity Parameter Analysis and Accurately Calculation Method of Cables Unstressed Length for Cable-Stayed Bridges
Authors: Tian Jun , Wu Xiao Wei , Hu Yan Fei
Published: July 2014

The cables unstressed length is an important key parameter of design and construction control. In order to accurately calculate cables unstressed length for cable-stayed bridges, the longer principle for cables is avoided at current. The various factors were fully considered which affect cables unstressed length, and the sensitivity parameters of various factors were analyzed. The sensitivity factors were identified, and not sensitivity factors were ignored. It is sensitivity factors that towers deviation in advance, towers dynamic displacement, girders pre-camber, girders dynamic displacement, temperature difference, cables elastic modulus error, the load values with calculation of cables for elastic elongation. The accurately calculation method of cables unstressed length was proposed, which was based on sensitive factors. The method of cables unstressed length is more reasonable and accurate.
Study on the Durability of Coastal Area Bridge
Authors: Ma Li Jie , Wang Yu Liang , Zhang Jin Yu
Published: July 2014

The durability of coastal area bridge structures is more prominent, first, the understanding of the durability of the concrete is insufficient before, and the corresponding measures has not taken; Second, accelerating deterioration of the reinforced concrete is due to the environment and climate factors. Experience has shown that both home and abroad: Starting from the design, take preventive protection measures is effective means to improve the durability of reinforced concrete bridge,then it can get twice the result with half the effort. Based on the Tangshan Coastal Highway construction, considering of the leve of the engineering environmental and so on, on the basis of the service life of the bridge design, the durability of concrete structure would be studied.
Analysis of Technical Characteristics and Construction Focus of Long-Span Continuous Rigid Frame Bridge with High-Rise Piers
Authors: Cui Yao , Hou We Nang , Liu Fei Ying
Published: July 2014

Under the condition of the deep water reservoir area, the choice of bridge pier and long span continuous rigid frame beam construction methods are quite various. And the analysis of destruction of bridge depends mostly on the beam and piers. The paper cares mostly about these two parts.
Design of an Experimental Prestressed Vierendeel Pedestrian Bridge Made of UHPC
Authors: Tej Petr , Tejová Alena
Published: July 2014

This paper presents the design of an experimental prestressed Vierendeel pedestrian bridge made of ultra-high performance concrete (UHPC). The structure is designed as a permanent single-span bridge with an intermediate deck. The span of the bridge structure is 61.38 m, the total width is 6.68 m, and the clearance width of the bridge is 5.30 m. The main structure of the bridge consists of two prestressed Vierendeel beams made of UHPC with dispersed steel fibres . The main beams are composed of prefabricated parts, subsequently prestressed.
Design of an Experimental Tensegrity Pedestrian Bridge
Authors: Tej Petr , Tejová Alena , Kolisko Jiří
Published: July 2014

This paper presents the design of an experimental tensegrity pedestrian bridge. The structure is designed as a permanent three-span bridge with spans of 105 m. The bridge has two entrance ramps, three ground supports and one water support. The main structure of the bridge is designed as a light transparent structure based on the tensegrity principle using membranes.
Study on Dynamic Behavior and Seismic Performance of Cable-Stayed Bridge with Different Auxiliary Pier Positions
Authors: Jia Bu Yu , Yu Xiao Lin , Huang Kang , Yan Quan Sheng
Published: July 2014

Choosing the Panzhong Bridge of the Guangzhongjiang highway as the research object, the dynamic behavior and seismic performance of cable-stayed bridge with different auxiliary pier positions were studied. The results show that the position of the auxiliary pier has limited influence on dynamic behavior. Under the action of the earthquake, auxiliary pier restricts the deformation of side span effectively and reduces the bending moment at bottom of the pile caps.
Study on Regional Water Environment Social Economic System due to Governance of Water's Five Aspects
Authors: Li Bin
Published: July 2014

Water shortage due to deterioration of water quality is quite serious near Hangzhou Bay, that is connected with regional water sustainability in water's five aspects, namely drainage water, flood water, sewage, water supplies, water-saving. Jiaxing city is near the Shanghai and Hangzhou city, located at Zhejiang province in the South China, mainly with totally three river systems. The research focuses on water pollution of Jiaxing city, and summary to improve regional water environment social economic system in the near future are given.
Transverse Ribs Affect the Stability of Steel-Concrete Composite Box Beams
Authors: Zhou Chong Yang , Yang Jian Rong , Jiang Wan Wan
Published: July 2014

The paper uses the finite element method to the specific structure of the linear buckling analysis to study the steel - concrete buckling coefficient changes when the changes and adjustments in the case of composite box girder structure different density transverse stiffening ribs buckling coefficient bracing spacing, Thus obtained that the almost linear relationship between the change in distance between the transverse stiffening ribs and buckling coefficient. Meanwhile get when bracing spacing when a valid range, coefficient of variation of buckling structure is not particularly obvious. Which is to adjust the spacing and lateral bracing number of stiffening ribs provide a space.
The Experimental Analysis of the Nonlinear Effects of Live Load of E-Dong Yangtze River Highway Bridge
Authors: Chen Hui Ling
Published: July 2014

E-dong Yangtze River Highway Bridge is a compound double Tower Double Suspension Cable stayed bridge with a main-span of 926m. it has very distinctive geometric nonlinearity, which features as a long span, a high Tower, a soft construction, etc. in order to analyze how the geometric nonlinearity will affect the live load effect of large-span cable stayed bridge, we adopted the experimental results of the static experiments of the E-dong bridge to do a comparative analysis, during which all the calculation was based on the limited Factor theory. And the results showed that, the nonlinear results fit much better with the actual response of large-span cable stayed bridge, while the linear results produced a big difference.
Experimental Analysis of Historical Metal Railway Bridges: A Review
Authors: Fang W. , Brandolinio S.
Published: July 2014

This paper deals with the experimental analysis of historical steel railway bridges, including the analysis of existing bridges performed in the last decades, derived from a comprehensive literature review. Many of the old railway bridges, which exists in Europe and around the world, are of riveted construction. These bridges were constructed during the second half of the 19th and the beginning of the 20th century, using mainly wrought iron and older steels. The continuously increasing loads and speeds during the last century, implies that these bridges are close to, or have already exceeded their design fatigue lives. Despite this, many of these are still in use appearing able to cope with current loading demands. Therefore, a comprehensive fatigue assessment methodology for riveted railway bridges becomes relevant in order to assure their safety and to prevent expensive cost of replacements. In this paper a comprehensive analysis of the literature is reviewed according to current knowledge on the matter, mainly dealing with experimental and theoretical analysis.
The Aerodynamic Characteristics of Bus in Different Lateral Locations of Steel Box-Girder Bridge
Authors: Zhou Ji Guo , Hu Zhao Tong
Published: July 2014

Choosing bus as the research object, the aerodynamic characteristics of bus in the coupling of wind-vehicle-bridge system were analyzed by CFD (Computational Fluid Dynamics) numerical algorithm. The variations of state coefficients of bus along with wind yaw angles were simulated when a bus in the different lateral locations of steel box-girder bridge and the minimum critical wind speed was calculated when a bus overturning or sideslip in four different lanes on the bridge.
The Designing and Construction about the below Model without Wind Bracing Tied-Arch Bridge
Authors: Lu Peng Zhen , Zhang Ji Han , Zhan Chao Qi
Published: July 2014

Concerning the design and the construction of the Nantang River bridge in Wenzhou, this paper mainly mention the problems about the the below model without wind bracing tied-arch bridge which should be taken notice of. The certain method of the tension in suspenders has been analyzed, and the advice of the design and construction of such kind of bridge has been proposed as well.
Research on CWR Design on Steel-Concrete Composite Beam Bridge in Alpine Region
Authors: Sun Wei Long , Han Feng
Published: July 2014

In this paper, take one steel-concrete composite beam bridge in alpine region as the research object, by using the calculation model of “line-bridge-pier”integration, research the distribution law of rail additional contractility, deflection force and values of broken gap when rail is breaking. Propose the key techniques of laying temperature stress CWR on composite beam bridge, which will have great significance in guiding the design of similar projects.
A New Decision Support Methodology for Subway Operation Management
Authors: Li Jia Yang , Chen Xiu Ming , Liu Zhi Hua
Published: July 2014

Subway is usually one of the largest infrastructure in the city, is also the arteries of urban passenger transportation, and urban lifeline. The subway operation safety problem has become the primary problem in metro operation. This paper presents a new method for decision support operational risk evaluation of subway. This new method not only can evaluate the subway operation safety, but also can be safety in subway operation management in weak links, to ensure the subway operation safety.
Analysis and Calculation on the Capacity of Stairway in Urban Rail Transit Hubs
Authors: Nie Guang Yuan , Yuan Zhen Zhou , Wu Hao Ling
Published: July 2014

In order to study the capacity of stairway in urban rail transit hubs, pedestrian flow and density were collected by the survey of upward stairway and downward stairway in Beijing Xizhimen rail transit hub. With the survey data, this paper fits flow-density curves and establishes corresponding function models. Based on the traffic flow theory, it calculates the actual capacity of upward stairway and downward stairway, and makes a contrast with the Code for Metro Design. Furthermore, the suggested design capacity of stairway is given based on the level of service. The results will provide references for the design of stairway in urban rail transit hubs.
Determination of the Minimum Departure Interval between Trains with same High-Speed at the Relatively Initial Station
Authors: Shao Jing Jing , Zhou Lei Shan , Bai Zi Xi , Shang Yong Feng
Published: July 2014

Chinese high-speed railway is in a boom and making train diagram with high-density trains to relieve capacity intense and improve operational efficiency has become the research focus. Different kinds of station intervals between adjacent trains are the basis for the train diagram. According to the situation in which trains with different speed run on the same line and the proportion of high-speed trains is much larger than that of middle-speed trains, this paper raises principles and methods to determine the minimum departure interval between trains with same speed at the relatively initial station. The minimum departure interval between trains with same speed at the relatively initial station is a necessary and sufficient condition for making train diagram since there is no overtaking between same-speed trains.
Development of German Ecological Comprehensive Transportation and its Enlightenment to China
Authors: Yang Guang , Gao Yong Liang , Dong Na , Wu Ping
Published: July 2014

The development of German transportation has always been adhered to the sustainable development strategy which is dominated by eco-transportation. This paper is aimed at expounding the development situation of German ecological comprehensive transportation from the aspects of philosophy and method to transportation planning, development of ecological comprehensive transportation, passenger transportation, passenger and freight transportation hub and non-motorized transportation, etc. Combined with China's reality, this paper is also aimed at summarizing the developmental experience of German comprehensive transportation from the macro level and providing experience and reference for the development of China's comprehensive transportation.
Evaluation Model of Road Network Vulnerability and its Genetic Algorithm Solution
Authors: He Ming Guang , Jia Yuan Hua , Li Hua Nan
Published: July 2014

Road network vulnerability is the loss estimate of multiple-link failure in road network cause by unplanned incidents. To evaluate road network vulnerability, the research adopted the improved Beckmann and FIM composite pattern. Then it carries out a solution based on Genetic Algorithm to quantify the road network vulnerability by defining the condition of combination road sections (open or closed) in road network which can find the critical links and nodes in the road network at the same time. The research turns out to be helpful both on road network planning and planning process of resource allocation for mitigation and recovery under disruption (take the snow disaster in southern China for instance).
Study on Selection of Alliance Cooperation Partner of Freight Transport on a Special Route
Authors: Wang Hai Cheng , Zhou Cai Yun
Published: July 2014

Enterprises of freight transport on a special route have to own alliance cooperation system with high efficiency in order to build alliance of freight transport. Selecting cooperative partners is the basis for establishing an efficient transportation system. The paper firstly analyzes the principle of selecting cooperative partners of freight transport alliance on a special route, summarizes the indicator system of selecting cooperative partners of freight transport alliance on a special route, establishes analytic hierarchy process model and finally proves the model with examples.
Research on Quick Measurement Method for the Flow Moisture Point of Shipping Liquefiable Solid Bulk Cargoes
Authors: He Long Jun , Wei Yan , Liu Min Yan , Fan Hai Zhu , Ge Hui Lin , Chen Yuan Yuan
Published: July 2014

Along with the development of economy in our country, the category of the shipping liquefiable solid bulk cargoes is changing, and the volume of transport by ship is increasing. However, lots of accidents on shipping liquefiable solid bulk cargoes occurred in recent years, causing heavy casualties and property losses. To reduce the accident probability, the paper creatively introduces liquid-plastic limit combined method used in the soil test to the quick measurement of the flow moisture point before shipment. By comparing the test results of this method with the flow table method’s, the paper demonstrates the feasibility of this method for the quick measurement of the flow moisture point of shipping liquefiable solid bulk cargoes. Finally, the paper gives some relevant suggestions for subsequent research.
Studies on Construction and Operation Mode of Intelligent Transportation Systems
Authors: Chen Min Zhi , Hu Yong Kai
Published: July 2014

Government departments of different areas are needed during the construction and operation process of intelligent transportation systems. So there is a contradiction that systems must be integrated but they need to be constructed and operated by different organizations. The division of the construction mission among different organization and the rules that all the joint members have to obey should be clear so that repetition and confliction in the whole system can be avoided. These modes of mission division are compared in this paper to provide a reference for our ITS construction and operation mode selection.
The Study of Changchun Automobile Industrial Logistics Transport Land Distribution
Authors: Lv Jing , Zhou Yang
Published: July 2014

Based on the analysis of current situation according to Changchun automobile industrial logistics characteristics, this paper analyze the existing problems of urban logistics spatial development in Changchun and the reasons which trigger these issues, in order to put forward Changchun automobile industry logistics development strategies.
Traffic Demand Model to Study Urban Agglomeration Transportation System
Authors: Li Cheng Bing , Guo Rui Xue , Li Min , Wang Jian Chao
Published: July 2014

The determination of traffic demand for urban transportation system is one of the core content of urban traffic planning, it is the basis for the traffic demand management strategy. First of all, the paper expounds the concept of urban agglomeration and features, on this basis, the traffic supply and traffic demand of urban agglomeration transportation system is analyzed. Second, according to land area for urban residents travel demand, according to the classification of goods transport industry production requirements were determined, thus to construct a system of urban agglomeration transportation traffic demand model.
Transit Scheduling Model Research Based on Time-Space Network
Authors: Meng Yue , Zhang Jian , Nie Jian Qiang , Zhong Gang
Published: July 2014

This paper try to develop a transit scheduling model based on the time-space network. The object is using the minimum cost to finish the required trips in time-table with the consideration of certain assumptions and rules. In this paper we deal with the multi-depot vehicle schedule optimization problem, addressed as MDVSP, using one time-space network instead of the traditional connection-based networks. Furthermore, we introduce the concept of open-depot, which means the bus may not return the depot where it started.
Evaluation Model of Urban Expressway Nodes Based on Entropy Weight and Variable Weight Model
Authors: Li Rui , Jin Yi Xuan , Ren Huan
Published: July 2014

A new method based on information entropy theory and variable weight theory was used to evaluate urban expressway nodes in the present research. First of all, theory evaluation index system of urban expressway nodes was established on the basis of influence factors. Secondly, constant weight was established based on information entropy theory and state variable weight vectors were chosen according to the interplay of the influence factors. Thirdly, variable weight was established by using the constant weight and state variable weight vectors. Finally, the model was verified by an example. The results showed that the model based on variable weight could better evaluate the importance of urban expressway nodes and provide a theory for planning and designing urban expressway nodes.
On Urban Transportation Planning in an Information Society
Authors: Zhu Wei
Published: July 2014

Nowadays, with developments of science and technology, our society has entered into the new era of information society where many things have changed deep. From the point of urban transportation planning theory and practice, this paper analyzed the definition and characteristics of the information society, discussed in detail the relevant problems and key implications to urban transportation planning in an information society.
Schedule Risk Management of Railway Station Project
Authors: Sun Jian , Tan Yue Ren , Xu Wei
Published: July 2014

Railway station is a comprehensive transportation hub. Its design and construction is far more complex than common public buildings, so as the construction management. This paper mainly explores the schedule risk management of railway station, including risk factors, risk indentation, risk evaluation and risk management. As many similar projects are under construction, Delphi technique method is most favorable for risk indentation. For risk evaluation, risk matrix method and CIM model are recommended to quantify the schedule risk. In the final part, the paper talks about the management of schedule risk. As schedule risk is abstract and its damage relatively slight, the risk prevention and mitigation are most suitable means.
Application of Projection Method Based on Combination Weight in Comprehensive Evaluation for Highway Network Planning
Authors: Wang Li
Published: July 2014

In this paper projection method based on combination weights is inducted and applied in comprehensive evaluation for highway network planning. Considering the subjective and objective factors,the combination of AHP and entropy weight is more accurate. Index vector of each road network plan is projected to the most ideal solution vector,the quality of various plans can be differentiated by the projection values. An application example is given that has proved the model is right and valid.
Forecast of Urban Public Transport Demand in Yantai Economic and Technological Development Zone
Authors: Tian Qing Bin
Published: July 2014

Urban transport demand in Yantai Economic and Technological Development Zone is forecast. Through analyzing current bus trip OD and calculating bus trip product and attraction, functional relations between each subzone’s public trip product and attraction, and population and post in base year is built. Then, parameters of gravity model are standardized, public trip product and attraction are forecast by employing method of gravity model.