bluuebunny/crossref_metadata_2025 huggingface dataset:
Bridge Deck Transverse Stress Analysis of Arch Tower Cable-Stayed Bridge with Steel Box Girder
Authors: Cao Yi Shan
Published: August 2013

In the engineering background of zhijang bridge, shell finite element model of steel box girder segment was established by the ABAQUS finite element program. The transverse stress of the bridge deck was analyzed by two cases of body cable and external cable, and the transverse stress of the bridge deck caused with deadweight and vehicle load was been compared. Conclusions obtained mainly include: the transverse stress of the bridge deck induced by the four cases were not large, if lateral inclination of stay cable was not particularly large, the transverse stress of the bridge deck caused by space cable can not be given special consideration.
A Calculation Method of High-Pier's Effective Length Factor Considering the Dead Weight
Authors: Liu Peng , Wang Rui Zhi , Zheng Fei , He Qiong
Published: August 2013

Nowadays, uncertainty regarding the calculation method of effective length factor of high-pier has brought many inconveniences to the design of bridge. To solve the problem, this paper demonstrates the calculation method of effective length factor on the basis of Eulers formula considering both the influence of high-pier s dead weight and non-ideal boundary conditions on the critical force of first-order buckling. The influence of piers dead weight on effective length factor in the construction and finished stage are evaluated by numerical examples. Results show that: the effective length factor becomes smaller considering dead weight both in construction and finished stage. Moreover, high-piers dead weight causes more influence in the construction stage than finished stage which should be considered seriously in the design and construction.
Optimization Analysis and Verification of Negative Moment Reduction for Bridge Structure Based Different Support Pattern
Authors: Li Na , Huang Gu Jian , Xu Bing Shuang
Published: August 2013

Taking use of SolidWorks and ANSYS Workbench FEM software to establish numerical analysis model and using the node mapping and sectional integral method for the calculation of three-dimensional solid model of bending moment, this paper puts forward a negative moment optimal formula. The optimal formula including parameters λ when took into account the different supporting patterns for continuous box beam bridges. With the comparative analysis of CODE(JTG D62-2004) method and measured data, it draws a conclusion that considering the support patterns on pier top negative moment influence on engineering structural analysis is more appropriate.
Seismic Response Analysis of the Semi-Floating System of Long Span Cable-Stayed Bridge
Authors: Zhao Qing
Published: August 2013

According to the seismic performance of cable-stayed bridge with a project example, using finite element analysis method, establishing the space beam element and link element calculation model, the dynamic characteristic and the seismic response of the cable-stayed bridge with selected three earthquake waves were calculated, the results were compared with the of the response spectrum method.The results show that:the semi-floating system of cable-stayed bridge is great flexibility, the vibration cycle is generally longer; the results by using the response spectrum method are smaller; the cable-stayed bridge should be calculated in accordance with the specific circumstances of the project with multiple seismic waves.
Study on Reinforcement Corrosion of the Bridges
Authors: Xia Xiao Hui , He Yang
Published: August 2013

A large number of design, construction and maintenance measures may be selected by bridge engineers to help ensure safe and durable service. In the present paper an improved model is developed for time-dependent reliability estimation of RC bridge decks subject to general and localized corrosion. The preliminary model developed is improved by considering weakening of the bond interface between concrete and reinforcement as a result of reinforcement corrosion and serviceability limit states in the time-dependent reliability analysis. A probabilistic model is developed that relates loss of reinforcement area to a non-linear bond stressstrain relationship.
Analysis on Vertical Dynamic Response of Simply-Supported Bridge Subjected to a Series of Moving Harmonic Loads
Authors: Zhang Jing Feng , Li Xiao Zhen , Song Li Zhong , Shan Chun Sheng
Published: August 2013

In this thesis, a dynamic analysis model is established that subjected to a series of moving harmonic loads, and the analytical solution of the dynamic response is deduced based on the mode superposition method. Based on this analytical solution, a program is made to calculate the vertical dynamic response of simply-supported beam. The calculation results show that the analytical solution is reasonable and correct. When the harmonic frequency is near to the fundamental frequency of the simply-supported beam, the resonance phenomenon will occur. The dynamic response of the beam will decrease as the speed increases, and the presence of damp can suppress the vibration of the bridge.
Assessment of Risks during Large-Span Steel Truss Arch Bridge Construction
Authors: Li Wei Zhou , Feng Zhong Ju , Xun Dong Liang , Zuo Sheng Rong , Che Xiao Jun , Wang Yang , Chen Cheng
Published: August 2013

Chongqing Chaotianmen Bridge is by far the world's largest three-span continuous half-through double-layer steel truss tied arch bridge. Risk evaluation and risk analysis are made to the bridge during construction period. At the same time, various measures are taken to avoid construction risks and accidents. The principal line of risk controls is clear with reasonable control measures. Chongqing Chaotianmen Bridge was completed and available for traffic on April 29, 2009, its various technical and quality indicators are in accordance with design and specifications.
The Spatial Distribution and Impact of Organic Certification Information Center in China
Authors: Li Yan Peng , Wang Yu Hua , Gu Bo Xuan
Published: August 2013

Organic certification system is an important part of organic agricultural production network. As the core of information network, Organic certification agencies are pivotal to our understanding of the structure, organization and effects of the network. This paper, taking the spatial distribution, organization and the influential area of the information center as the basis, suggests that the information network of organic agriculture in China is characterized by high degree of unevenness, and hierarchical order in development level. The analysis shows that the whole network can be divided into three tiers. Through a case study of some key areas such as Beijing, Zhejiang and Liaoning, the study put forward some suggestions for the sustainable development of organic information network.
Experimental Study on Multi-Mode Vibration Control of a Stay Cable with a Passive Magnetorheological Damper
Authors: Wang Zhi Hao
Published: August 2013

Effective vibration control technology for stay cables is extremely critical to safe operations of cable-stayed bridges. For super-long cables, passive linear damper cannot provide sufficient damping since it can be only optimum for a given mode of cable, while a long cable may vibrate with several modes. This paper focuses on multi-mode vibration control of stay cables with passive magnetorheological (MR) dampers. Firstly, a 21.6m-long model cable was designed and established in the laboratory.Then, control performance of the cable with a passive MR damper was tested. The test results show that modal damping ratios of the cable in the first four modes can be improved significantly with the MR damper. It is further demonstrated that optimal tuned passively operated MR damper can outperform the passive viscous damper.
Study of Aerodynamic Interference Effects on Staggered Double Thin-Walled Hollow Pier
Authors: Wang Jie , Liu Jian Xin
Published: August 2013

In order to investigate the aerodynamic interference effects between parallel bridges, the aerodynamic interference effects on aerostatic coefficients of double thin-walled hollow pier in the parallel continuous rigid frame bridges with high-pier and long-span were investigated in details by means of wind tunnel test. The tandem interval and side-by-side interval between the two piers and wind direction angles were changed during the wind tunnel test to study the effects on aerodynamic interferences of aerostatic coefficients of twin piers. The test got aerostatic coefficients of 10 conditions. The research results have shown that the aerodynamic interference effects on aerostatic coefficients of double thin-walled hollow pier in parallel bridges can not be ignored. The tandem interval and side-by-side interval between the two piers and wind direction angles are important factors affecting interference effects. The drag coefficient, lateral force coefficient and torque coefficient are affected by these factors.
The Research on Impact Vibration Test Method for Bridge Piers
Authors: Zheng Yi
Published: August 2013

This paper conducts an analytical research on the use of bridges, and discusses how the vibration of bridges is affected by the healthiness of piers. Meanwhile, Impact Vibration Test Method is introduced, by which the modal parameter of bridges can be tested. A lot of dynamic tests of piers are conducted by using this method. By analyzing data and identifying modal information of piers, this paper made a conclusion on the general law of the impact each parameter has on characteristic frequency of the piers. The bridge finite-elemental model is constructed according to the actual structure of piers, the impact vibration test load stimulated, then computed and analyzed with the dynamic time-history method. Bases on the comparison between test result and frequency of Time-domain transverse velocity received the results of the analyses identify the frequency spectrums, the validity of the Impact Vibration Test Method is verified.
Experimental Studies on Damages to FRP Reinforce Bridges under the Effect of Limited Overload
Authors: Li Ming , Zhu Fu Sheng , Wang Li Li , Xu Zhan Sheng
Published: August 2013

On the basis of experimental studies on the bending resistance of FRP reinforce bridges under the effect of limited overload with high preloading amplitude values, the relationship between FRP amounts and ultimate loads is analyzed and influences of limited overload on flexural strength, deflection, crack width and height of bridges are fatherly studied. Thus damage effect rules of FRP reinforce bridges are concluded which provide scientific technology supports for the application of fiber reinforce plastic on bridge reinforcement.
SMA - 13 Road Construction Control Technology
Authors: Zhang Sheng Jian
Published: August 2013

This article combined AnXin highway rebuilding project in Henan province SMA - 13 construction on the above layer.According to the geographical features of Henan province, based on the principle of efficiency, we use limestone instead of the traditional basalt in construction.Because of the nature of the limestone and aggregate characteristics comparing with the basalt is poor, we use the previous construction experience is difficult to meet the construction requirements.Paving test road, through the malaxation, transportation, paving, rolling and joint etc of the mixture in pavement construction process, we put forward a set of applicable to the construction process of limestone.Applied to the engineering entity paving, we were successful.
Analysis about the Disease of Vehicle Jumping at Bridgehead
Authors: Jia Yi Qin
Published: August 2013

Vehicle jumping is a common diseases in the road engineering. This paper carries on the analysis to the setting of slab sections and the no setting of slab sections, summarizing the jumping causes, and proposing some control techniques to the disease of vehicle jumping , in order to make an useful discussion about the prevention of vehicle jumping at bridgehead.
Sustainable Attraction of Ecological Countryside Resort
Authors: Zhang Shu Hai
Published: August 2013

Based on the analysis of nine factors, which influencing mostly the sustainable attraction of Ecological Countryside Resort, this paper builds an index system for evaluating the attraction of Ecological Countryside Resort. Considering the attribute of the evaluation of sustainable attraction of ecological countryside resort, which is multi-gradation, multi-factor, and qualitative-and-quantitative-index-concentrating, this paper develops a multilevel fuzzy comprehensive evaluation method for assessing sustainable attraction of Ecological Countryside Resort. Thus, this paper provides a basis for improving the sustainable attraction of Ecological Countryside Resort, prolonging the life of Ecological Countryside Resort, optimizing the development and service marketing of Ecological Countryside Resort.
Field Assessment in Permeability and Surface Run-Off of Permeable Pavement
Authors: Lin Jyh Dong , Hsu Chen Yu , Su Yu Min
Published: August 2013

This study was to evaluate the permeable pavement constructed topdown by porous asphalt, compacted natural grading base materials, in-situ soil blended with coarse sand, and geotextile with crushed gravel. The permeable pavement was paved on the field testing site where it was installed a rainfall simulation device to control the intensity of rainfall. The coefficient of permeability and water content for each layer were collected as well as the volumetric water of infiltration and surface run-off. Test results show that the permeability of surface layer was degrading severely after nine years in service, while base and subbase remained functional. While rainfall simulation performed, it indicates that the permeable pavement can retain 0.2139m3 of water with infiltration and surface run-off measured by 0.4665m3 and 0.1413m3, respectively. The analysis of flood peak present that permeable pavement can delay the occurrence of flood peak generated by the surface run-off and ease it quickly by continuous infiltration.
The Experimental Investigation of Solid Volume Rate of Base Material with the Interstitial Spall
Authors: Sun Li Xia , Wang Da Peng
Published: August 2013

The text introduces the basic property of the base material with the interstitial spall,and proceeds abundant experiment and analyse for the material,gets the conclusion that the base with gap filling macadam can coincidence with the standard of project.uses Uniform Design to design experiment,proceeds the experiment of soild volume rate of the material,finally, gets the optimum proportioning of the material by test and Regression analysis.
Analysis on Shear Stresses of Asphalt Layers on Lean Concrete Base
Authors: Cao Hua Li , Xu Jiang Ping , Qiao Lin
Published: August 2013

Since it exist a significant difference in stiffness between asphalt surface and lean concrete base layer,the probability of shearing failure increase.In this paper,a typical structure of asphalt pavement with lean concrete base is established,selecting smooth state as the interfacial contact condition.BISAR3.0 is used to calculate stresses in the multilayered elastic system.Results display that the thickness of asphalt layer and the load condition have an enormous influence on shear stresses,while surface modulus,the modulus and thickness of base layer do not much affect the shear stresses in surface.
The Road-Test of High Performance Asphalt Mixture with Superpave
Authors: Ma Li Jie , Zhang Jin Yu , Li Zhe
Published: August 2013

The ratio of asphalt mixture was designed with Superpave method. Through the test section, road performance of the asphalt mixture difference are expounded with Marshall design and Superpave method. Further validate asphalt mixture designed with Superpave has better performance.
Shrinkage Characteristics of Cement Treated Base Subjected to Thermal Coupled with Moisture in the Field
Authors: Yu Si Xin , Wei Jin Cheng , Li Xi Wei , Ma Shi Jie
Published: August 2013

Shrinkage of semi-rigid materials like cement treated base subjected to thermal coupled with moisture has raised crack in semi-rigid base, which causes reflective crack in the asphalt concrete top layer. The deformation characteristics of cement treated base subjected to thermal coupled with moisture is researched through the strain acquired by the vibrating wire string gauge installed in the cement treated base while construction. And it is found that transverse deformation is larger than longitudinal strain which may raise greater stress in longitudinal direction as the restriction is stronger.
Research on High Blending Ratio of RAP Hot Recycling Plant
Authors: Wei Dao Xin , Bian Li , Zhu Bao Lin
Published: August 2013

Analyze two problems why blending ratio of plant-mixed RAP generally cannot be more than 40% to 50%. Prove pre-heating and sieving of RAP is a key technology to solve the problems. Design a high blending ratio of RAP recycling plant. Through construction of high blending ratio of RAP Hot recycling plant and testing pavement proved that applied ratio of RAP in hot plant mixed recycled can be increased to more than 70%.
Research on Application of Precast-Assemble Technology to Road Maintenance Engineering
Authors: Peng Peng , Yuan Zu Guang , Tian Bo , Niu Kai Min
Published: August 2013

Through research on precast assembling structural design and construction technology in cement concrete pavement maintenance engineering, this paper brings forward reasonable size for precast assembling slab in cement concrete pavement maintenance engineering to improve original precast assembling construction technology and brings forward effective improvement measures for original construction technical difficulties. And simultaneously, through making a comparison of socioeconomic benefits among precast assembling maintenance mode, cast-in-place ordinary concrete maintenance mode , cast-in-place early-strength concrete maintenance mode and cast-in-place reinforced concrete, uses that precast assembling maintenance technology is a cement concrete pavement quick maintenance technology with extremely high performance price ratio.
Numerical Analysis of Asphalt Pavement of Lean Concrete Base
Authors: Suo Li Jun , Wang Bing Gang
Published: August 2013

Both thermal stress and load stress, which are caused by temperature change and traffic loading, are important parameters used in the analysis of the new asphalt pavement design. In order to study the stress of asphalt pavement of lean concrete base, first of all, threedimension finite element model of the asphalt pavement of lean concrete base is established. The main objectives of the paper are investigated. One is calculation for stress of asphalt surface, and the other is calculation for stress of lean concrete base. The results show that load stress of lean concrete base increases quickly with the increase of load. Thermal stress of lean concrete base increases with the increase of thickness of base. Asphalt surface is in the state of compression. Maximum shearing stress decreases with the increase of thickness of asphalt surface.
Analysis on Economic Benefit of Pavement Layer Based on Net Present Value Method
Authors: Hao Meng Hui , Wang Kun
Published: August 2013

This paper explains the method and theory of cost net present value, and uses this method to analyses the economic benefits on several pavement inter layer (emulsified asphalt seal coat, rubber modified asphalt and stress absorbing layer of fiberglass polyester paving mat) during the 15-year period, results showed that rubber modified asphalt and stress absorbing layer of fiberglass polyester paving mat is superior to emulsified asphalt seal coat.
Technique to Set Baselines for Slipform Paving of Cement Concrete Pavement
Authors: Liu Ying , Peng Peng
Published: August 2013

This paper studies the technique used to set baselines for slipform paving of cement concrete pavement, proposes ways to improve the setting of baselines for different types of roads, brings forward precision requirements for setting baselines and determines the tensile force requirements for steel wires of different diameters through experiments.
The Investigation and Analysis of City Road Asphalt Pavement Damage in Hohhot
Authors: Man Du La , Yang Ya Ping
Published: August 2013

With the development of local economy, the increase of urban population and the poor infrastructure in old urban area cant meet the development of the modern city. Small and medium-sized city traffic problems have gradually become the negative factors which hinder and restrict the city social economy development. As viewed from Hohhot, this article mainly aims at the urban road asphalt pavement damage condition, analyses the main damage types and puts forward to the renovation and maintenance programs.
Research on the Yinchuan Plain Development Status and Urban-Rural Integration
Authors: Zhang Pei , An Lei , Sun Hai Jun
Published: August 2013

It is the main topic to adjust the urban-rural relationship to change the urban-rural dual structure into urban-rural integration and it has great significance when the evaluation has been done in Urban-rural Integration of Yinchuan plain. With the urban-rural integration as the main thread, measures and evaluation indicator system of regional urban-rural integration has been presented. And with the ideas of system analysis as well as the combination of logic analysis and empirical analysis has been used.
Study of Tianjin City's Cultural Strategies in its Greenway System Plan
Authors: Sun Kui Li , Chai Yan
Published: August 2013

Urban greenway system is one of the important parts in urban ecological environment construction and also a significant part of ecological human habitat environment. In the background of overall regional development, besides paying attention to district industry economy, at present we should also think over how to protect and rationally use local natural eco-environment and historical and cultural resources along with endowing the greenway with cultural connotations. This paper takes the cultural perspective of overall plan of regional development and thus provides the cultural strategies of Tianjins urban greenway planning from four aspects, namely, its capability of fusing cultural resources, bearing capability of its green space, the canals cultural charm and prospect of its tourism resources, and offers theories for the construction of Tianjins urban greenway.
Multi-Stage Linear Prediction Model for Railway Track Irregularity
Authors: Guo Ran , Han Bao Ming
Published: August 2013

Railway track irregularity has significant impact on traffic safety. It can ensure high smooth of the track from predicting the deterioration of track irregularities accurately, and then fundamentally eliminate hidden dangers. In this paper, a multi-stage linear prediction method for track local irregularities based on time series is proposed. On the basis of the track irregularity management standard in our country, this paper has researched the changing regularity of irregularities in unit section and built the local irregularities deterioration model for each unit section to forecast the development of irregularities during a maintenance period. After comparing predicting data with actual data and analyzing the error, the accuracy of the model was verified.
Traffic States under Influence of Different Vehicle Types on Freeway with Two Unidirectional Lanes
Authors: Fu Qiang , Yang Xiao Fang
Published: August 2013

The high proportion of heavy vehicles on Chinese freeway brings important effects to the operation of freeway and makes the traffic very complex. The exhibition and mechanic of the influence between different vehicle types vary under different traffic flow and heavy vehicle proportion. In this paper, field survey was carried out and the characteristic of Chinese mixed traffic was gotten. Based on the phenomenon observed in the field survey, models were built to analysis the mechanic of the influence between different vehicle types. The influence states were divided into four aspects according to different exhibition and mechanic, that is: free flow condition, independent heavy vehicle impact, heavy vehicles and cars in different lane, drive in disorder. The influence states will transfer with the temporary variation of traffic flow composition. It is result from the self-organizing behavior of vehicles which pursue higher speed and brings dynamic change of capacity and level of service in time and space.
Analysis of Passenger Queuing Behavior on Urban Rail Transit Platform during Rush Hour
Authors: Zhang Ying , Song Rui , Hao Na
Published: August 2013

Analyzing the passengers queuing behavior is powerful support of subway operation efficiency developing. Based on the three level pedestrian micro behavior theory, the decision process of passenger queuing behavior on urban rail transit platform is analyzed. The frame of passenger queuing behavior survey is put forward. The survey plan is designed. Finally, the quantitative analysis is performed which is on passengers queue selection, the time during the waiting and boarding stage.
The Evaluation of the Traffic Impact of Highways' Reconstruction and Extension on Area Highway Network
Authors: Li Chan Juan , Wang Jian Jun , Wang Miao Miao
Published: August 2013

The reconstruction and extension of highways change the grade and scale of roads, so that it will produce certain traffic impact on the surrounding area highway network. Firstly, this paper establishes the secondary comprehensive evaluation index model of highways reconstruction and extension traffic impact on the area highway network from the traffic characteristics, service level, transportation efficiency and safety four aspects. Then, using the before after contrast thought to calculate the deviation rate of each evaluation index, and determines the weight by means of the optimal transitive matrix method of uncertain AHP. Lastly, this paper analyzes the before and after highways reconstruction and extension traffic impact on the area highway network with reference to the before after contrast method.
Rail Network Planning Study in Shandong Province Based on Integrated Transportation System
Authors: Xie Yun Xia , Zhang Ru Hua , Wang Jin Ping
Published: August 2013

To build a comprehensive transportation system is an important measure to promote rapid and healthy development of the field of transportation. How to prepare railway network planning become an urgent problem, under the background of pursuing the integrated transport concept. Previous studies focus on the single transportation modes, to conduct railway planning. This paper first defines the overall transportation system, then studies the impact of integrated transport system to railway planning, and analyzes the Influencing factors, finally, makes railway network planning of Shandong province as an examples. This instance analyzes the problem of the Status quo railway, then introduces the integrated transport planning channels in Shandong Province, and proposes strategies under the influence of the concept of an integrated transport system, at last divides the railway network channels and plans the railway network in Shandong Province .
Relationship between Pain Perception and Deterioration of Traffic Service Level under Traffic Construction
Authors: Chen Yin , Zhu Shun Ying , Zhang Zi Pei , Wu Jun Di , Yi Dan
Published: August 2013

Taking Wuhan traffic construction as an example, the relationship between pain perception and deterioration of traffic service level under traffic construction was studied. The data were obtained via a questionnaire survey. The study found that the travelers pain perceptions are monotonically increasing with the deteriorating quantity of service level. And it indicates that travelers pain perception is affected by his or her expectation on future traffic. Whats more, in the same degree of deterioration, the pain perception of the travelers with optimistic attitude is lower than that of pessimism ones with respect to the future traffic condition.
Scenario-Based Integrated Assignment Model for Bi-Class User Rail Transit Networks
Authors: Zhu Wei
Published: August 2013

An integrated assignment model for urban rail transit (URT) networks was proposed and discussed in four typical scenarios with the consideration of passenger difference between native and non-native. An overall algorithm framework for the model was also developed, which introduced three critical route choice models and combined them appropriately to different scenarios. A case study was performed on a real-scale network of Shanghai during the Expo 2010. The results revealed that the proposed model can deliver more appropriate solution to the assignment problem compared to the existing practice in the real world.
Study on the Innovation Strategy of China's Logistics Industry
Authors: Zhou Ye Wang
Published: August 2013

With the national emphasis on the logistics industry, logistics industry as an emerging service sector in the national economy is developing rapidly.China's logistics industry has an important means of rapid development. This article analyzes the basis of current situation of China's logistics industry, given the major problems affecting the logistics industry in innovation and problem-oriented logistics industry in the management philosophy, management, organization, management techniques, management methods, development strategy, talent training and service innovation strategy.
Bulk Shipping Organization Method Choice on Yangtze River Based on Logit Model
Authors: Ke Jiang Cen , Gan Lu
Published: August 2013

The Yangtze River bulk shipping has a supporting role on economic development along the river. How to choose the most economic and reasonable shipping organization method is crucial to the maximization of ship utilization ratio. This paper established a logit model to solve the problem of shipping method choice, solving utility function by adopting possibility and satisfaction degree method rather than Delphi method, which is widely used in fuzzy evaluation. In the end, it conducted shipping method choice analysis in Wuhan to Shanghai leg in the middle and lower reaches of the Yangtze River. The results indicate the model is reliable, effective and practical.
The Market Analysis of Railway Car Liner Trains Based on BP-NN Model and SWOT Method
Authors: Zhang Ying Ying , Lang Mao Xiang , Wang Dan Zhu
Published: August 2013

Forecast the car sales by BP-NN and analyze the market of automobile logistics by SWOT method to master the car logistics development trend and learn the automobile logistics market demand. On the background of the conservation-minded society, this paper proposed some advices of developing car liner trains to promote the development of railway high value-added industries and expand transportation income, combining with the characteristics of railway's own advantages and absorbing domestic and foreign automobile logistics development experience.
A New Kind of Channel-"Tidal Reversible Channel": Primary Design and Feasibility Analysis
Authors: Chen Ting Ting , Shi Chao Jian , Lei Qin , Chen Jin Biao
Published: August 2013

A new kind of traffic separation mode for the two-way channel was proposed primarily by extending the channel to left for the heavy traffic side during the peak period, forming a new kind of channel--Tidal Reversible Channel. This method can improve the general navigation efficiency and meet the navigation demands of both sides of the channel at the same time. The two key points of the reversible channel which are the operation occasion and the reversible width of the channel, called Dynamic Time and Dynamic Zone, were discussed, also their further research directions. Then, the feasibility of the new channel was verified by two different design ships in Yangtze River Estuary Deep-Water Channel, indicating that the reversible channel will have wide study and application prospect.
Evaluation of Traffic Organization Scheme during Highway Reconstruction Period
Authors: Zhu Huai Zhong , Zhu Shun Ying , Wu Yu , Deng Shuang
Published: August 2013

An appropriate traffic organization scheme of highway reconstruction can ensure the normal operation of the traffic flow, and reduce the influence of reconstruction. Based on evaluation principles, this paper will analysis and screen index systems such as level of service, negative economic benefit and traffic environmental impact. The evaluation criterion of each index will be ascertained based on existing research results of level of service for highway. Then an integrated approach combined with dynamic comprehensive evaluation and analytic hierarchy process is proposed to evaluate the traffic organization during the highway construction. Last, we combine an example of a highway reconstruction project to analysis the proposed integrated approach.
Research on Prediction Analysis Method about the Taxi Demand of Tourist City with Seasonal Fluctuation
Authors: Jiao Yan Li , Ge Meng
Published: August 2013

The determination of taxi demand in tourist city is affected by seasonal changes. It presents peaks and troughs so it is difficult to be predicted. On the basis of analyzing the advantages and disadvantages of existing forecast methods, this paper puts forward modified supply and demand balance method and ratio method to forecast taxi demand and then discusses the methods of dealing with seasonal fluctuations.
Analysis of the Post Transportation Problem Paradox Based on Adjustment Route
Authors: Tian Xue , Yang Jiang Long , Zhang Li Ping
Published: August 2013

This is the further study on the basis of privious study, the transport problem paradox, when the change is more than the adjustable amount in the optimization process, namely the so-called stage of post transportation problem paradox. Learning from the view of the minus cost route and the theoretical viewpoint of anti-adjustable route, and taking the theory of adjustment route as a guide, author made the assumption judgment and proven the development trend of the total freight and cargo in the stage of post transportation paradox.
Study of Methods of CBD Plan and Design in Green Vision
Authors: Kang Cui Xia , Zuo Chang An , Liu Xiang
Published: August 2013

The paper analyses the ecological development trend, the challenges for sustainable development and the core concerns of the contemporary CBD, and expatiates the connotation of Green CBD. Based on the ecologic support model, this paper also introduces the methods of design and system of elements of Green CBD and explores the way to achieve sustainable development of CBD in the course of urban plan.
Research on Cultural Heritage Tourism Development Based on Tourist Perception: Taking Beijing Olympic Park of China as an Example
Authors: Li Jiong Hua , Sia Rosalind , Zhu Ying Bo
Published: August 2013

Cultural heritage tourism is one of the most essential components in tourist industry while tourist perception is of considerable referential importance for the development of cultural heritage destination. As one of the touristic hot spots after Beijing Olympics games as well as a typical sports cultural heritage tourist attraction, Beijing Olympic Park has become a new tourism landmark and tourist destination in Beijing. Based on a tourism market questionnaire survey, this paper analyses the present situation and existing problems of the tourism development in Beijing Olympic Park from the tourists perspective. This paper also tests five research hypotheses and makes some suggestions on the tourism market, tourism branding, tourism activities, tourism support system etc. specifically for Beijing Olympic Park.
Estimation of Electric Vehicle's Crusing Range Based on Real-Time Links Average Speed
Authors: Yao En Jian , Yang Zhi Qiang , Dai Hong Na , Zuo Ting
Published: August 2013

For the reasons of relative short cruising range and insufficient charging facilities, the use and promotion of electric vehicles (EV) is restricted. The estimation of cruising range is important for the EV drivers when selecting the travel route. Energy consumption for different running status is the prerequisite for estimation of cruising range. In this study, an energy consumption factor model is established, which is characterized with reflecting the impact of frequent acceleration and deceleration of urban road, and the input parameter is easily obtained from usual road traffic information system. The results show that the proposed model can predict energy consumption with high accuracy. Then based on real-time links average travel speed, this paper proposes a method of estimating the cruising range when EV travels on a planned route according to drivers demand.
Transit Travel Demand Analysis Method Based on APTS Multi-Source Data
Authors: Chen Jun , Li Xiao Hua , Ma Lan
Published: August 2013

Traditional transit travel information is acquired by Trip Sample Survey which has some disadvantages including high cost and short data lifecycle. This paper researched transit travel demand analysis method using Advanced Public Transportation Systems (APTS) data. The study collected APTS data of Nanning City in China and established APTS multi-source data analysis platform applying data warehouse technology. Based on key problems research, the paper presented the analysis procedure and content. Then, this study proposed the core algorithms of the method which are determinations of boarding bus stops, alighting bus stops and transfer bus stops of smart card passengers. Finally, these algorithms programs are experimented using large scale practical APTS data. The results show that this analysis method is low cost, operability and high accuracy.
Analysis of Parking in Urban Center Area
Authors: Feng Tian Jun , Liang Chun Yan , Wu Li Xin
Published: August 2013

Parking time differences characteristics of the commercial and residential area of the city center area was discussed, actual case shows that the proportion of parking time is less than one hour accounted for 48.2% in commercial area, and the proportion of parking time is less than one hour accounted for 22.9% in residential area. The problem of parking in the central city was indicated, and the suggestions focusing on the problem of parking were put forward to improve operational efficiency and alleviate these problems of parking difficulty, parking chaos in central city.
Research of Multi-Objectives Priority Selection System of Traffic Information Release Mode
Authors: Wu Mao Sheng , Li Chan Juan , Li Lian Heng
Published: August 2013

Providing timely and accurate traffic information for road users can effectively improve the efficiency of road network by choosing the appropriate traffic information release mode in different places properly. Based on the analysis of the advantages and disadvantages of several main information release mode at present, this paper selects the optimization model indexes of information release mode according to the appraisal index selection principles. Because of the different important degree of each evaluation index and the cognitive limitations of experts in different fields, it introduces expert credibility to optimize the traditional method of determining the weights locally, and determines the weights, and then sets up the multi-objectives priority selection method of traffic information release mode.
Research on Evaluation Method for the Service Quality of Public Transport Based on Time Reliability Degree
Authors: Liang Chun Yan , Li Li Li
Published: August 2013

Devoting major efforts to developing public transport and practicing public traffic priority has been one of the important approaches to solve traffic problems. In order to evaluate the quality of public transport services quickly and accurately, time reliability degree is taken as evaluation index. The time reliability degree of the bus line can be got through the computation of the reliability degree of running and waiting time. In the end, the bus line of K362 in Changchun city is taken as an example to show the evaluation process. The evaluation theory and method of public transport system is perfected by the result.
Research on Public Bicycle Traffic Mode Choice Based on Disaggregate Model
Authors: Feng Tian Jun , Huang Chao , Xie Zhou Bing
Published: August 2013

First, four transportation forecasting methods were analyzed, and these characteristics and applicable conditions were summarized, so we can conclude that the disaggregate model is more suitable to predict the public bicycle traffic mode choice. Secondly, the utility function model of bike, bus and motor vehicle was established to determine the utility of each traffic mode and predict the share rate by disaggregate function model. Finally, the analysis of public bicycle transportation impact factors through an example, and gives quantitative indicators.
Creation and Application of Highway Network Spatial Database
Authors: He Bi
Published: August 2013

Highway network is the most important transportation facility, informatization is the effictive method to improve the management level of highway network. With GIS, highway network spatial database was built, the process include set the spatial mathmetics foundation, design the structure of database, process the spatial data, build the topological relation and process the property data. And two example of the highway network spatial database application was provided, one is spatial analysis, and the other is traffic information service on internet.
Research on Application of Traffic Signs in Rural Highway Security Engineering
Authors: Liu Shi Long , Guo Zhi Dong , Dong Miao
Published: August 2013

Traffic signs are widely used in rural highway security engineering due to low cost, strong directive performance. The paper conducts the research and discussion combined with the design principles, control points of construction technology, analysis of quality inspection and evaluation and analysis on safety effect of traffic signs in the security engineering of Cai-Gou road. This paper provides references for the implementation of security engineering principles which is safe, effective, economic, practical.
The Influence of Outer Weather Conditions on the Modelling of Vertical Ground Heat Exchangers
Authors: Álvarez Gómez Pascual , Rodríguez Maestre Ismael , González Gallero F. Javier , Mena Baladés J. Daniel
Published: August 2013

Policies for energy saving and carbon dioxide emission reduction have enouraged the use of efficient technologies in building thermal conditioning, like geothermal source heat pumps [. Most of the thermal models used to simulate the performance of vertical ground heat exchangers do not consider the effect of outer weather conditions, except for the setting of the initial ground temperature [. This paper shows a study to assess the effect of outer weather conditions on the outlet fluid temperature, especially during the upper part of the exchanger. Different depths for typical configurations of ground heat exchangers have been analysed. Detailed simulations have been developed for a full year of performance using a commercial finite volume computational fluid dynamics (CFD) code (©ANSYS-CFX). Outer weather conditions have been set by using synthetic hourly weather data and considering all of the heat transfer phenomena involved. Errors in outlet fluid temperature and surface borehole temperature have been estimated for the whole year of simulation.
Research on Energy-Saving Technology of Housing Colony of Yangling
Authors: Xu Ling Ling , Zhang Guo Xing , Zhang Jian
Published: August 2013

Based on field survey, we had a discuss on the grange character and problem on energy-saving of Yangling in Shanxi Province, whats more, site selection, spatial arrangement of housing colony, straw-bale application, comprehensive application of a variety of energy resources and afforest were mentioned and illustrated in detail as the energy-saving measures for grange, which would have active effect on the construction of low-energy consumption and ecological residence in Yangling region.
Biodiesel Production from Cottonseed Oil by Micro-Flow System
Authors: He Wei , Fang Zheng , Guo Kai
Published: August 2013

Currently, continuous synthesis of biodiesel has been widely studied due to a series of problems imposed by biphasic reaction and thermodynamic, as well as to reduce production costs. In this work, transesterification of cottonseed oil to biodiesel was carried out in a microtube reactor with a micromixer. The effects of molar ratio of ethanol to cottonseed oil, reaction temperature and residence time had been experimentally discussed. The optimal result was obtained under the conditions of oil-to-ethanol molar ratio of 1:16, a residence time of 7min, and a temperature of 70°C.
A Case Study of the Integrated Design of Solar Water Heating System in High-Rise Residential Buildings
Authors: Li Lin , He Jiang , Chen You Xiang
Published: August 2013

This paper presents a studyon the integrated design of solar hot-water systems in high-rise residential buildings for the hot-summer and warm-winterclimate. The design process was described in detail through a case study in which the study target is a high-rise apartment being built in a southern city (Guilin) of China. This paper also describes how to select an appropriate solar hot-water system andauxiliary heating system based on the analysis of the local climate. Suggestions for the integrated design in high-rise residentialbuildings were discussed from analysis results.
The Study on Theory of Solar Water Heater and Integration Design of Combining Solar Energy Techniques with Building
Authors: Tong Wan Quan , Yang Liu
Published: August 2013

Introduct the type of solar water heater and working principle simply. Also explain the present situation of integration design of combining solar energy techniques with building in our northern country. Then summarized its difficulties in the process of design by analysing the system of solar water heater and the features of the design technology development in combination with the housing .
Potential and Economic Analysis of Office Building Energy Saving Reconstruction in Sunan Region
Authors: Feng Xiao Ping , Jiang Zhi Heng , Han Yu
Published: August 2013

with the vigorous development of construction in our country, the proportion of the building energy consumption in total is increasing step by step, especially the 1980s existing buildings, the vast majority of them failing to take any insulation measures, the energy consumption of them is several times or even ten times to new buildings, therefore, in recent years, energy saving reconstructions of existing buildings have paid more and more attention. This paper takes a typical office building which was built in sunan region as an example, using some external thermal insulation materials such as rigid polyurethane foam plastics, polyurethane composite board and energy saving design software BECS to imitate energy saving reconstruction. Besides, the economy of each scheme of energy saving reconstruction was also analyzed. The results show that, energy saving reconstruction can greatly reduce the energy consumption of existing buildings, and bring good economic benefits, at the same time, it also can improve indoor comfort and working conditions, and can generate significant social benefits.
Cognition Spaces of Modern Furniture Color Semantics
Authors: Xu Ji Feng , Zhang Han Ning , Cui Tian Jian
Published: August 2013

A quantitative analysis based on SPSS is proposed in this paper for semantics maps of modern furniture color. It is assumed that different color factors could initiate different semantics cognition and feelings and analyze the relationships among all the factors, then access to modern furniture color semantic cognition space mapping, which are used to explain the relationships between modern furniture color semantics and color factors such as hue, tone.