bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on Shear Strength of Unsaturated Red Clay with Triaxial Tests
Authors: Geng Da Xin , Guo Jun , Li Hong Mei , Zhang Chi
Published: January 2014

The subgrade of the most roads is easy to be of instability under the cyclic loading action of the vehicles with the soil unsaturated. The main idea of this paper is that researching the unsaturated red clay which is common in the subgrade building of Jiangxi province with the pressure plate test and triaxial shear test. And the main equipments are the pressure plate apparatus and triaxial shear apparatus. In the research, c,φ value of the unsaturated red clay under different confining pressure and matrix suction are obtained and it can be shown in the tests that with the same matrix suction, while clay content of the clay soil sample is small its volumetric water content is small; and with the same volume moisture content, with small clay content matrix suction of the soil sample is small similarly. At the same time, we found that within the low substrate suction range, with the change of the soil sample moisture content bigger and the smaller the clay content, the influence the increase of matrix suction on the volumetric moisture content is smaller; with the same clay content in soil samples, the bigger the matrix suction the greater the value of c, φ of the unsaturated red cohesive soil ;with the same matrix suction, the smaller the clay content of the soil, the greater the value of c and the smaller the value of φ.
Damage Evaluation of Reinforced Concrete Cross-Section under Compression and Bending
Authors: Jiao Jun Ting , Yang Rong Hua
Published: January 2014

By using the simple stiffness matrix formula of reinforced concrete (RC) cross-section under bending and compression, some RC cross-sections under bending and compression were traced through full path. Based on the numerical analysis, the damage of each point was calculated in a cross section, and the damage distribution of one member under the ultimate load was analyzed. This was agreement with experimental phenomena. In cross-section level, cross-section whole damage index was given and researched; and it could well explain cross-section mechanical behaviors.
Stability Analysis of Dump Slope Based on FEM Strength Reduction Method
Authors: Peng Chao , Ji Dong , Zhao Liang , Qian Zhen Yu , Ren Fen Hua
Published: January 2014

An analysis on safety factor of slope through c - φ reduction algorithm by finite elements method is presented. When the system reaches instability, the numerical non-convergence occurs simultaneously. The safety factor is then obtained by c φ reduction algorithm. This paper, which combines with the actual situation of Jinduicheng open pit mine, analysis the stability of the limit height of the dump based on strength reduction of finite element method. And the value of slope safety factor is 1.25 to 1.30. The results show that calculating safety factors of the slope by ANSYS is in full conformity with the basic requirement of safety. That means, the dump is stable, which can reduce the production costs and benefit the enterprise.
Wind-Induced Response of UHV Guyed Single-Mast Transmission Tower-Line System
Authors: Yang Wen Gang , Zhu Bo Wen , Wang Zhang Qi
Published: January 2014

Ultra-high voltage guyed tower is typical structure of tall and slender, with the character of nonlinear and more sensitive to wind loads. Wind load is one of the most important control loads during design phase. A single-mast guyed tower recommended by a UHV DC transmission line was set as an example in this paper. The finite-element model of transmission tower-line system was built, based on Davenport, fluctuating wind velocity time-history was simulated, the result of wind-induced response was analyzed. The result indicates that, as for displacements of the nodes on guyed tower, the mean values of wind-induced response are greater than the displacements under the static equivalent wind loads. As for axial forces of the leg members on guyed tower, the axial forces under the static equivalent wind loads are less than the max values of wind-induced response.
Experimental Study of Mechanical Property of a New Lightweight Composite Floor
Authors: Shao Bing , Huang Zheng Jue , Wang Xin Tang
Published: January 2014

For analysis of bearing mechanism of the composite floor formed with thin-walled steel and lightweight aggregate concrete, the static load test of a composite floor was put forward. The specimen is simply supported at the two shorter sides of the floor and the other two sides free. The uniform loads and partial loads are applied to the floor through load blocks. The vertical displacements of the floor, the relative slips of concrete panels and steel beam and strains of specimens were measured and analyzed. The results showed that the new lightweight composite floor has better bearing capacity and there was not cracks in lightweight aggregate concrete panels while the applied loads are much larger than the normal loads. It is concluded that variation of strains of secondary beams and concrete panels has similar development trend as the equivalent uniform load is close the value of 6 kN/m2.
Study of Mechanical Property of Cold-Formed Thin-Walled Steel Lightweight Concrete Composite Floor
Authors: Huang Zheng Jue , Shao Bing , Wang Xin Tang
Published: January 2014

For analysis of mechanical property and bearing mechanism of the composite floor consisting of cold-formed thin-walled steel beams and lightweight aggregate concrete panels, the static load test of a composite floor was presented. The floor specimen is simply supported at the two shorter sides of it and the other two sides free. The equivalent uniform loads are applied to the floor through piling up the load blocks on the supper surface of the floor. The displacements of the floor and strains of specimens were measured and analyzed. It is denoted that the vertical displacements of the floor varied linearly with the load while it is less than 8kN, but the slips of main beam and concrete panel vary nonlinearly during the whole loading process. It was seen that there were not evident cracks in the concrete panels while the applied loads are much larger than the normal loads.
Case Fuzzy Retrieval of Reinforced Concrete Structures Accidents Based on CBR
Authors: Zuo Yong Zhi , Sun Jing Bo , Lu Qiao Zhi , Teng Hai Wen , Zhang Tao , Liu Huan
Published: January 2014

In order to help engineers to better learn from accidents of reinforced concrete structures, accident identification and processing method, this article introduced the ideas of CBR to the accident case retrieval methods of reinforced concrete structures. At the same time, the fuzzy retrieval and knowledge index model of reinforced concrete structure accidents are presented. According to the approximate extent of construction conditions, the approximation of construction are determined, and similar cases with the current engineering cases then retrieved through the case of reinforced concrete structures, which the designer or construction workers can learn from.
Study of the Effect of Joint Trace Lengths on Failure Strength of Rock
Authors: Zhang Yun Jie , Xu Tao
Published: January 2014

Numerical simulations the different rock sample in the uniaxial compression have been conducted using Rock Failure Process Analysis program (RFPA2D) to evaluate the effects of joint trace lengths on the overall mechanical behaviour of jointed rock masses in this paper. Numerically simulated stress-strain curve, peak stress, peak strain and failure patterns were compared with the corresponding experimental results. We found that for a series of partially-spanning joint geometries with the same joint orientation, the projected area will be proportional to the square of the trace length. Thus, the relationship between compressive strength and partially-spanning joint geometry for the tests carried out to explore the influence of joint trace length may be expressed as a linear correlation between compressive strength and projected area.Numerical simulations agree well with experimental results.
Overall Reliability Assessment of Portal Frame Structure with Roof Beam Outward Offset
Authors: Liu Feng , Wang Xiao Yan
Published: January 2014

This article deals with the condition that the roof beams of portal frame are outward offset beyond the standard limit, determines the most unfavorable position of the portal frame structure under the load and establishes the criterion standard of structural failure based on the space overall finite element analysis. It adopts Monte-Carlo method in reliability analysis methods to realize the overall reliability analysis of the portal frame structure with the roof beam outward offset. Analysis shows that the actual structure is at safe state under the design load and the reliability conforms to the standard requirement.
Analysis on the Theory and Instance of Interaction between Superstructure and Foundation
Authors: Qian Kun , Dong Gui Yan , Xia Yan , Jia Guang Hui
Published: January 2014

The superstructure and foundation of highrise are in a complete system of interaction. Taking the case of project, by comparatively analyzing the computed value which is calculated by applying the theory of interaction between superstructure and foundation and the measured value ,we find that the computed value neatly dovetails with the measured value.
Reliability Analysis for Transverse Crack of Concrete Structure
Authors: Cai Bin , Liu Xin Hui
Published: January 2014

According to the national standard "Code for Design of Concrete Structure", the reliability index for the structural members of reinforced concrete have not been given, which are controlled by serviceability limit states. A methodological framework was proposed, which made use of fuzzy invalidation rule for reliability analysis of reinforced concrete members. Firstly, A membership function was chosen. Secondly, A equivalent function was established to deal with the fuzzy reliability of concrete structure by traditional JC method. Finally, the fuzzy reliability index of transverse crack of reinforced concrete structure was obtained.
Comparative Analysis of Davenport Wind Spectrum and Kaman Wind Spectrum in the Towering Structural Design
Authors: Wang Liang , Qu Wei Lian , Ji Bai Feng , Wang Yi Fei , Chen Jun Ping
Published: January 2014

To the Yangtze River a long-span transmission tower as an example, this paper makes a comparative analysis on the davenport wind spectrum and kaman wind spectrum, using two different wind spectrum calculation of wind-induced response of the structure. Obtained the conclusions that kaman wind spectrum of considering vertical correlation get greater wind-induced response in a large span transmission tower engineering.
The Slope Monitoring Method Research
Authors: Meng Xiang Tian , Yu Shi Zhe , Li Zhu Feng , Wen He Xing
Published: January 2014

The slope monitoring is the basis of slope management and ensure the safety of slope, is regarded year by year. This paper mainly introduced several kinds of more advanced, more commonly used slope monitoring method, elaborated the key from the principle and advantages and disadvantages, and analyzed the application of open-pit mine monitoring equipment from the Huogeqi mining area. It will have certain reference significance for selection of open-pit mine slope monitoring method.
Comparison of the Calculated and Experimentally Measured Values of Settlement and Stress State of Concrete Slab on Subsoil
Authors: Čajka Radim
Published: January 2014

At the Faculty of Civil Engineering VSB TU Ostrava testing device was constructed so that the phenomena of soil foundation interaction could be experimentally investigated and compared with numerical models. Results of experimental loading test are compared with soil foundation interaction analysis based on finite element method (FEM). The stress strain analysis of elastic halfspace by means of Gauss numerical integration and Jacobean of transformation is presented here. The arbitrary shape and general course of the loaded area in nodal points is allowed by use of 4-and 8-node isoparametric elements, numerical integration and Jacobean transformation. The objective of this paper is also improving and developing the soil-structure interaction analysis based on the experimental results and FEM.
Research on the Characteristics of Wind Load on L-Shape High-Rising Building
Authors: Zhang Jian Guo , Zhuang Hui Min
Published: January 2014

The mean and fluctuating wind pressures on an L-shape high-rising building were obtained through simultaneous pressure measurements in a wind tunnel. The shape coefficients on each surface and their variations with wind direction are investigated, which are more detailed than current load codes. Considering that there may be two composition forms, namely integrated-type and separated-type, when an L-shape high-rising building is structurally designed, the amplitude and frequency-domain characteristics of the base moment in along wind, across wind and torsion direction of the above two types are presented respectively. The research results show that the change regularities of shape coefficients on each surface with wind direction are different from each other and current practice using the shape coefficients of a certain wind direction to structurally design is worth discussing; the characteristics of three directions base moments on an integrated-type L-shape high-rising building are rather complicated and those on a separated-type building appear as obvious interfering effects.
The Investigation of Steel Structure Used in Residential Buildings
Authors: Wang Chong Jie , Li Jia Nan
Published: January 2014

Steel building construction is an important aspect of architecture system in the world. With the rapid development of the steel industry, contemporary steel housing in many developed countries presented dominant position in the market. In this paper, the advantages of steel structure in sustainability, strength, appearance and other aspects are summarized. Also, the application in residential buildings are analyzed, especially in green buildings. Furthermore, a study on the construction of steel building of I-Magic Cube in Shandong Jianzhu University, China are investigated and discussed. And in the example of Shandong Jianzhu Universitys "I-magic Cube", the construction of steel buildings and steel housing and other aspects are analyzed and discussed.
Analysis of Displacement of Composite Wall Cladding in Uniform Distribution Load
Authors: Li Jiu Yang , Feng Qing
Published: January 2014

First, utilizing finite element program, this study analyzed the displacement of composite wall cladding in uniform distribution load. Second, the verification is carried out through experiment, then providing theoretical basis for calculating the stiffness of the composite wall cladding.
Study on Performance Measurement of Beijing Urban Expressway Based on Microwave Data
Authors: Wang Yao , Shao Chang Qiao
Published: January 2014

The research provides an occupancy-based performance measurement for Beijing urban expressway traffic that would be beneficial for further improvement of traffic control. An analysis of the field traffic data shows that the phenomenon of speed transition happens frequently once occupancy reaches to the critical occupancy (30%). Analyzed with speed transition probability and state stability at different occupancy and speed, four traffic states could be defined as stable high-speed flow, unstable high-speed flow, unstable low-speed flow and stable low-speed flow. The performance of each traffic state is measured by transportation efficiency. The result shows that once occupancy changes from 30% to 31%, transportation efficiency drop 27.8%, representing an extra 1/4 time cost for all vehicles on road. Therefore lane occupancy should be controlled under 30% to avoid a deteriorating traffic conditions.
Foggy Image Enhancement Based on Filter Variable Multi-Scale Retinex
Authors: Zeng Fei , Wu Qing , Du Jun
Published: January 2014

In foggy weather, contrast and color of images captured by traffic visual surveillance system are degraded significantly. To improve contrast and enlarge gray range of fog-degraded image, an improved filter variable multi-scale Retinex algorithm is presented. From comparing simulation resuts by four algorithms (global histogram equalization, local histogram equalization, multiscale retinex respectively variable filter retinex), the subjective and objective evaluation is summarized respectively. Experimental results show that the method has good universality and practicality to enhance local texture details of foggy image and suppress noise effectively.
Development and Evaluation of a Green Wave Control Algorithm Based on Two-Way Bandwidth Maximization for Transit Signal Priority
Authors: Gao Liu Yi , Hu Xiao Jian , Wang Wei , Yu Shan Shan
Published: January 2014

A good traffic signal design is one of the key solutions to many transportation problems. A two-way green wave control strategy for transit signal priority is reviewed and evaluated in this paper. Considering the traffic tidal phenomenon along the arterial roads during rush hours, a directional transit signal priority algorithm depend on the passenger flow has been developed for the coordination in signalized intersections. The algorithm provides signal timing plans for each intersection and the optimal bus speed along each section based on two-way bandwidth maximization. The strategy was designed to provide sectional control on transits, using electric signs and existing traffic control devices. In this paper, the strategys efficiency was evaluated using VISSIM micro-simulation along an arterial road which contains five intersections and serves more than ten bus lines. Actual data was used in the simulation. The simulation results show that the presented algorithm can effectively improve the operation efficiency of the transit system. This green wave control strategy reduced the number of stops by 34 % to 47 % and travel delay time by 27 % to 30% of the transit, while restricting the impact on vehicular traffic to the minimum. Moreover, the number of stops and travel delay time of vehicular traffic actually got a slight decrease. The algorithm shows promising results, and with minor upgrades, it can be applied to any type of intersection.
The Correlation Analysis of Two Wheelers Accident Factors and Casualties Based on In-Depth Traffic Accident Investigation
Authors: Li Gen , Wang Wen Xia , Liu Fu Ju
Published: January 2014

Situation of two wheelers is severe in China, and in order to find out direction to decrease injury, this paper researched correlation between accident factors and casualties. The correlation analysis were made between Human, Time and Scene factors and injury conditions by Chi-square test based on in-depth traffic accident investigation data among motorcycle, two-wheel electric bicycle and bicycle accident. The results show that there are seven factors indicated statistical significance at low grade correlation with casualties among motorcycle and two-wheel electric bicycle. Bicycle have three factors show the middle grade correlation, and Age is the strongest correlation factor with V value 0.39.
Evaluation of Signal Control Strategy Based on Hardware-in-the-Loop
Authors: Zhao Xiao Hua , Chen Chen , Rong Jian
Published: January 2014

To evaluate the performance of different signal control strategies in intersection, based on the Hardware-In-The-Loop (HITL) simulation technology, a HITL system was established to perform experiment. In the system, microscopic traffic simulation software VISSIM created a virtual environment, in which the traffic flow can be controlled by the real signal controller. One type of intersection and four degrees of traffic volume were designed in the simulation program and three control strategies were set in the signal controller. Twelve simulations were performed in the system. The analysis of travel time and queuing length indicates that different strategies has remarkable influence on travel time, but no significant effect on queuing length.
Analysis of Driver's Characteristics Based on Internet of Vehicles
Authors: Wang Jian Qun , Xue Xiao Qing , Cao Ning
Published: January 2014

The road traffic accidents caused huge economic losses and casualties, so it had been focused by the researchers. Lane changing characteristic is the most relevant characteristic with safety. The intent of lane changing was discussed. Firstly, the factors affecting the intent were analyzed, the speed satisfaction value and the space satisfaction value were proposed; then the data from the University of California, Berkeley was extracted and the number of vehicles changed lane more often and the vehicle ID were obtained; the BP neural network classification model was established, it was trained and testified by actual data. The results shown the method could predict the intent accurately.
Research on Basalt Fiber Asphalt Concrete's Water Stability
Authors: Gao Chun Mei , Zhang Qiang , Zhang Hu Zhu
Published: January 2014

Conduct experimental study on water stability about asphalt concrete with 6m30m and 9mm basalt fiber and without basalt fiber,6mm fibers whose dosage is 0.12%0.15% and 0.17%, 9mm fibers whose dosage is 0.05%0.07% and 0.1%,test method is Freeze-thaw splitting test. The results show that the asphalt concrete mixed basalt fiber is better than not added fiber asphalt concrete on water stability; the asphalt concrete mixed 9mm basalt fiber is better than that mixed 6mm; when without experiencing freeze-thaw ,there is 1.57% difference between the maximum which 6mm basalt fiber correspond and the maximum which 9mm basalt fiber correspond, after two freeze-thaw cycles, there is 2.54% difference between the maximum which 6mm basalt fiber correspond and the maximum which 9mm basalt fiber correspond. For water stability, the optimum amount of value about 9mm basalt fiber is 0.07% and the 6mm is 0.1%.
A New Floor Field Model for Pedestrian Evacuation Considering Local Density
Authors: Li Sheng Nan , Li Xin Gang
Published: January 2014

The behavior of pedestrians around the corner of a room or a corridor is one of the most important features in pedestrian evacuating dynamics. In order to study this in detail, an existing potential field model is modified to capture the pedestrian dynamic around corner by introducing a local density parameter. The local density parameter of a cell is defined as the pedestrian occupancy of the surrounding eight neighbors. Simulations are carried out to study pedestrian evacuation in rooms with corners formed by internal obstacles and walls. The simulation results show that the new model can reproduce the empirical pedestrian dynamics around corner. Pedestrians prefer to walk to lower pedestrian density area although the route may be a little longer. It is also shown that the total evacuation time could be reduced for the evacuation corridor is fully utilized.
Influence Mechanism of Travel Information Service Level for Drivers' Travel Time Prediction Error
Authors: Wan Neng , Xiong Jian , Guo Feng Xiang
Published: January 2014

In order to reveal the effect mechanism of travel information service level for drivers travel time prediction error, defined the concept of travel information service level and travel time prediction error. Utilize the conceptual model, described the various influence factors of travel information service level and interaction relations. Discussed the relationship between the drivers travel information receiving preference habits and the road selection, analyzed the effect of the influence factors on drivers' road selection and travel time prediction, based on Bayesian methods analyzed the effect of different travel information service level for travel time prediction error. The calculation shows that the higher travel information service level can improve the drivers travel time prediction, increase the travel information service level play an important role for the efficiency of drivers travel, and provide theoretical support for planning and construction of travel information system on the future.
Acceptability Analysis of Parking Charges Based on Structural Equation Model
Authors: Xiao Hui Hui , Lu Jian , Ma Qing , Wu Yao , Lin Ye Qian
Published: January 2014

Parking charges is a widely used and effective means to improve parking demand management. Based on the structural equation theory, the model about the influence factors related to the acceptability of parking charges was established. Eight factors were selected for the modeling, including problem perception, willingness, perceived effectiveness, perceived benefits, perceived freedom, perceived fairness, social norms and accountability. And a survey of two charging schemes was undertaken in Nanjing concerning influence factors of the acceptability. Model verification and path coefficient test were conducted based on the established structural equation model by AMOS. It is indicated that the most significant factors affecting the acceptability of parking charges measure are perceived effectiveness and willingness. Finally, according to the conclusions, the suggestions of improving acceptability of parking charges were presented.
Study on the Application of the Urban Traffic Guide System in New Media Technology
Authors: Wang Yan Ting , Huang Chao
Published: January 2014

The paper is aimed to find the relevance and feasibility between new media and urban traffic guide systems on the acquaintance of new media; to illustrate the diversified ways for information experience bought by new media; and thus to enhance the ability of information cognition and enrich the urban culture connotation.
The Treatment Technology of Banbidian Goaf in Qinhuangdao
Authors: Mu Huan Sheng , Gao Ling
Published: January 2014

The issues induced by underground mining are worldwide difficulties because the mined-out area is undesirable due to its implicity, complexity and large deformation. This paper describes the harmfulness of golf in highway construction based on the general failure characteristics of overlying rock masses. Grouting method was employed to improve the Banbidian goaf. Verification of the reinforcement effect was carried out using packer test and core extraction. The results show that this technique has achieved desired effects and hence could be referenced by other fellows.
Experimental Study of Sulfate Attack Resistance Performance on Cement Concrete Pavement
Authors: Liang Ji Feng , Zhang Chao , Wang Xin Yu Fang
Published: January 2014

Airport concrete pavement in high latitude northwest area attacked by sulfate of different extent, which influence early strength and ultimate strength of cement concrete. In this paper, the double doped silica fume and fly ash concrete have been made long-term immersion test research. From the mass loss rate, compressive strength and flexural strength, effect on the corrosion resistance are studied with fly ash, silicon ash adding in a composite Portland cement. Methods to improve the performance of sulfate attack resistance are obtained by experiment.
BP Neural Network Model on Choice of Project Manager for Highway Slope Treatment
Authors: Wang Bin , Gao Yong Tao
Published: January 2014

To get the quantified indexes of comprehensive capacity about project manager, based on the modal on artificial neural network theory, different influence factors about choice of project manager for highway slope treatment were analyzed , identified, quantified and evaluated , then comprehensive capacity of the manager were analyzed. Such procedure provided a new method for choice of project manager for highway slope treatment.
Fatigue Life Analysis of Compressor Bracket of Car Air Conditioner
Authors: Wang Wen Shan , Wu Hua Jie , Zheng Zai Xiang , Xu Jing
Published: January 2014

the compressor bracket of car air conditioner frequently breaks and fatigue failure of its welding beam frequently occur in the vibration fatigue test. In order to solve these problems, the static stress and displacement distribution of mounting bracket are given under the effect of different acceleration by using FEM software in the paper. Simulation results show that revised design of the mounting bracket achieves success and its stiffness, strength and fatigue life satisfy the requirements of vibration test.
Study on Ride Comfort of Automobile Active Suspension
Authors: Chen Xiang , Zhang Lin Yan
Published: January 2014

A half-vehicle model with 4-DOF was built up. In response to a nonlinear, time delay and uncertain system of automobile suspension, an improved self-adaptive fuzzy PID controller of the active suspension was designed. Taking SANTANA2000s suspension parameter for simulation and taking a step function as the input of simulation road, time-domain simulation in Matlab was finished. The simulation result indicates that the ride comfort was improved obviously by using the active suspension with improved self-adaptive fuzzy PID controller. The time of response reach to steady state was shortened notably. The active suspension with improved self-adaptive fuzzy PID controller is superior to the passive suspension and the simple active suspension with fuzzy controller in improving the ride comfort and maneuverability. All of these advantages are of considerable referential values in development of vehicles active suspension controller.
A Optimization Algorithm of Obstacle Limit Takeoff Weight
Authors: Chen Hong Ying , Luo Wen Tian
Published: January 2014

This method is explained and demonstrated how to calculate obstacle limit takeoff weight. According regulation requirement, under an engine failure conditions, it needs to consider the takeoff flight path different segments which can clear all obstacles[. In this paper, take-off gross flight path and net flight path are analyzed, and taking an aircraft for example, obstacle limit takeoff weight are calculated, Simulation results show the feasibility of optimization algorithm.
The Study of Vehicle Load Monitoring System
Authors: Zhao Yi Ding , Liu Xiao Li
Published: January 2014

Overloading the impact on traffic safety, measuring the deformation of leaf spring form the start, a vehicle load measuring system was designed based on ultrasonic sensors. In this article, the mathematics model of steel plate deformation and load is discussed upon the mechanics principle and obtain the relationship of load and deformation. Processing the data that the ultrasonic sensors measured by single-chip and using temperature sensor to compensate, it comes to the result of vehicle load.According to the test, the system achieved the purpose of real time measurement of vehicle load, and it is useful.
Enterprise Coordination Transport Analysis
Authors: Yan Yue Xia , Wang Jun Qi
Published: January 2014

It starts at co-operation problem between different transportation enterprises, and sets up the Coordination Transportation concept with its management and administration model based on geography information system technology. Then it analyses and points out that its solution to shortest path may have the aid of intellect algorithm. Finally it studies and analyses the measurements during Coordination Transportation between deferent transportation enterprises. Coordination Transportation will help improve the style of transportation, and it will also help set up comprehensive transportation system in China.
Thinking of Comprehensive Energy-Saving System Construction for Urban Rail Transit
Authors: Liang Jun Ke , Liu Zhi Gang , Huang Yuan Chun
Published: January 2014

The High Energy Consumption of the Current Urban Rail Transit Industry, High Efficiency Energy Saving Measures must be Taken. this Paper Entity from the Traction Energy Consumption, Building Structure and Operating Equipment Aspects of the Current Situation, Described the Energy Saving Strategies. Aiming at the Present Problems Existing in Energy Saving Practice, this Article Puts Forward the Comprehensive Energy Saving System which Contains Optimization Design in Planning Period, Low Resource Consumption in Construction Period, Energy Saving Work in Operation Period. above all, Implement Energy Saving Practice at Every Concrete Work of Reaching.
Evaluation of Traffic Organization Scheme during the Construction of Urban Subway Station Based on TransCAD
Authors: Zhang Bing , Zhang Bing Jie
Published: January 2014

Urban subway station construction has a direct influence on the surrounding road network, so the traffic organization scheme needs be optimized according to construction process. For accurately simulating the traffic conditions when the station to be constructed, the OD trip matrix from OD matrix estimation was distributed on different road network by using TransCAD. The traffic organization scheme would be more scientific and reasonable by multiple traffic organization scheme compared selected evaluation, which the service level of roads and intersections as the main evaluation indicators. The results show that traffic organization scheme obtained by this method can greatly reduce the traffic influence on the surrounding road network during construction.
Research on the Resorting Capacity Analysis and Strengthen Measures of Kunming East Station
Authors: Yu Xiao Yuan , Wang Ying , Li Hai Ying
Published: January 2014

Kunming East Station as the only regional marshalling station of Kunming hub, its resorting capacity shortage problems have become a station development bottleneck. According to the actual survey, its arrival freight trains are very unbalanced which has an impact on the resorting capacity of marshalling station. Therefore, this paper calculates its resorting capacity by a marshalling station resorting capacity method based on unbalanced transportation. The results show that hump break-up capacity is the station resorting capacity weaknesses and hump break-up operation time standard is higher. Moreover, this paper analyzes factors affecting the hump break-up capacity and recommends some corresponding measures to enhance its capacity. The results will make a reference for Kunming East Station capacity expansion.
Research on the Decision-Making Model of Container Cranes' Renewal
Authors: An Ran , Yang Yong , Dong Na
Published: January 2014

Container cranes renewal is an important issue related to the port production efficiency. Considered of characteristics of container crane production, the author use the method of mathematical programming and analyze its renewal decision, establish a renewal decision-making model based on container crane life cycle management, and provide an example analysis. The research achievement can be used for diagnosis and assessment of container crane and other port equipment.
Roads Problems on Undermined Areas in the Moravian-Silesian Region
Authors: Cihlářová Denisa , Seidler Tomáš , Řezáč Miloslav
Published: January 2014

Quality life and prosperous district is strongly connected with quality functional road infrastructure. One of the tools that can help is Pavement Management System. Pavement management system used in undermined area must take into account different degradation factors, which affecting disturbances on the roads. It is difficult to choose sufficient technology for its repair. Chosen repair should be from the economical and technological aspect as effective. This article refers to the gaps in the current pavement management system when its use in such affected areas. According to the long-term observation was made classification of roads disturbances and design of their repairs. This contributes significantly to obtain comprehensive knowledge of interactions between soil and road elements.
Analysis of Non-Conventional Roundabouts Performances through Microscopic Traffic Simulation
Authors: Astarita Vittorio , Guido Giuseppe , Vitale Alessandro , Gallelli Vincenzo
Published: January 2014

This research is focused on the applicability, in particular contexts, of roundabouts characterized by a non conventional geometry configuration. The methodology is based on the microsimulation approach, validated through a series of surveys on real case studies and traffic conditions. A microsimulation model (VISSIM, PTV), was applied in order to reproduce roundabouts geometry and to define vehicle flow parameters. The research results allow to evaluate roundabouts level of service as a function of geometric features and to establish the limits connected to the employment of noncircular roundabouts in different traffic scenarios.
Survey on High-Speed Railway Train Plan Design Issues
Authors: Zhou Peng Fei , Han Bao Ming , Zhang Qi
Published: January 2014

High-speed railway passenger train operation plan is an important basis to ensure the quality of transportation services. With construction and development of the country's high-speed railway, design and evaluation of railway passenger train plan theory need to be improved and perfected. On the basis of reading and studying a large amount of the references, this paper summarizes the domestic and overseas high-speed running railway operation modes, the high speed railway train operation programs design and other aspects. Besides, according to the related problems and shortcomings, this paper illustrates the meanings and necessities of analyzing the high-speed railway passenger train program.
Empirical Analysis of New Urban Rail Transit System of Planning Convergence
Authors: Zhang Jun Jie , Chen Si Ru , Jiang Zhong Hai
Published: January 2014

Rail transit is one of the most important public transport facilities to achieve new urbanization and promote the coordinated development of urban and rural areas, and is the most effective and feasible method to solve traffic problems of largest urban region in our country. This article exemplified by developed areas of the mega-cities of Foshan III rail transportation planning, general requirements have been put forward based on the convergence of demand forecasting from four aspects —rail traffic levels, differentiation, systematization and standardization; At the same time it also propose convergence countermeasures for land-use development, road network system, public transportation systems, cars, slow traffic systems, transport policy; What’s more, this article summarizes features of large urban rail transit convergence planning and provides guidance and reference on China's mega-cities’ construction of an integrated public transport system planning.
The Application of Stochastic Order to Stochastic Multiobjective Programming Problems
Authors: Zheng Ming Fa , He Qi Hang , Wang Zu Tong , Su Dong Qing
Published: January 2014

This paper is devoted to the application of stochastic order to the with stochastic multiobjective programming problem. A new method, called stochastic approach, is originally presented based on stochastic order. The partial Pareto efficient solution is defined first, and then several types of stochastic order from the viewpoint of practical problems are proposed. The results obtained can provide theoretical basis for dealing with the stochastic problems in field of civil engineering and transportation.
Study on Hub Location Models and Research Trends
Authors: Li Meng Liang , Wang Xi Fu , Sun Quan Xin
Published: January 2014

Hub location has been a fertile area for interdisciplinary researchers. There has been used to plan the number of hubs, position, grades, scale and so on. Many scholars have studied hub location problem for more than 30-year history which has indepth researched on the theoretical concepts, mathematical models and applications in hub location. For the development of hub location, a review of classification of HLPs is provided, and then mathematical models, resolution algorithm, the advantages and disadvantages of each classification could be described in detail. At the end, the future research trends will be presented.
Time-Dependent Discrete Transportation Network Design
Authors: Wang Yang , Cao Jin Xin , Li Xia Xi , Wang Ri Dong
Published: January 2014

The transportation network construction takes place over a quite long time span and need enough budget. The budget is from the allocation of funds in phases and the construction cost change in the process of the construction. The general static transportation network design problems ignores the problems above. So the optimal solution obtained by the static model is best in short time, and it is may be unfeasible in the actual situation. Based on the actual situation and the shortage of the static model, the time-dependent transport network design is proposed in this study. The plan horizon is divided into N intervals and a bi-level model is built to describe the problem. The objective of the upper-level is to minimize the total cost of the whole stages. the lower-level model is a user equilibrium model. Then the branch and bound (B-B) algorithm is designed to solve the model. It is obvious that the solution of the time-dependent simulation model is more feasible than the solution of the static sequential design.
Research on the Benefit Evaluation of Energy Saving and Emission Reduction of Drop-and-Pull Transport
Authors: Tao Wan Jing , Zhan Bin , Wang Meng
Published: January 2014

Along with the development of industrialization and urbanized advancement, the highway transportation profession is increasingly important in the economy and society. However, it will lead to issues such as energy consumption and environmental pollution, which restricts the sustainable development of economy, society, environment and other resources. Therefore, optimizing transportation form of the road transport, strengthening energy conservation management, is of great practical significance to improve the efficiency of energy utilization, to protect environment, to facilitate the sustainable development of society.This article combined with the relationship between drop-and-pull transport and energy saving and emission reduction, used the analytic hierarchy process and fuzzy comprehensive evaluation model to evaluate the effectiveness of energy saving and emission reduction of drop-and-pull transport.
The Study of Feeder Bus Network Optimization Model
Authors: Fang Xiao Li , Xiong Dan , Zhou Zhao , Wang Jian Bo , He Cao , Chen Lin
Published: January 2014

In order to study the optimal network of feeder bus lines for rail stations, this paper established an optimization model with the objective of minimizing the consume time and operating costs of unit traveler, and proposed an iterative algorithm to solve the model and then used an example to describe the practicality of the model and the algorithm.
Simulation Study Based on OpenTrack on Carrying Capacity in District of Beijing-Shanghai High-Speed Railway
Authors: Chen Zhen , Han Bao Ming
Published: January 2014

The paper simulated the carrying capacity in Nanjing-Shanghai district of Beijing-Shanghai high-speed railway by using OpenTrack software. Firstly, the paper modeled station topological structure and section topological structure of Beijing-Shanghai high-speed railway and set the parameters for simulation. Secondly, the paper simulated on the condition of current train service frequency no less than the frequency in simulation while the headway was respectively 3 minutes, 4 minutes and 5 minutes. Finally, the paper analyzed the carrying capacity in Nanjing-Shanghai district by analyzing the simulation train diagram outputted by OpenTrack.
Deployment Optimization of Rail Gantry Cranes in Railway Container Center Stations
Authors: Zhu Song Ya , Zhu Xiao Ning , Liu Yong
Published: January 2014

Rail gantry cranes are the core resources of railway container center stations which affect the operating efficiency and costs of stations. In this paper, a rail gantry crane deployment model is proposed which considers the operation time as well as balanced utilization of equipment. Further, this multi-objective function is transformed to a single objective model with a weight coefficient method. Finally, this paper puts forword optimization ideas for the deployment of core resources in a railway container center station.
Seismic Stability Analysis of High-Fill Embankment
Authors: Su Qian , Zhang Jian , Liu Bao , Zhang Li Cai
Published: January 2014

Three problems remained to be solved in the analysis of the seismic stability of high-fill embankment: the pseudo-static method was defective, the embankment damage model was not clear, and the stability evaluation index was still to be discussed. It analyzed the dynamic response of a typical transect of high embankment with FEM to find out its instability mechanism. Then it chose the most dangerous sliding surface and analyzed its stability. The selection of the evaluation index of the seismic stability of high-fill embankment was discussed at last. The results show that the upper embankment, especially the shoulder is easily to be damaged. It is too conservative to use the safety factor as the involution index of the seismic stability of high-fill embankment, and the permanent displacement is a better choice.
PMP-Based Optimization Method for Determining Airline Fleet Composition
Authors: Wang Yu
Published: January 2014

Traditional methods for determining airline fleet composition could not reflect the impact of network effects on fleet composition. To solve this problem for airlines operating in the mode of Hub & Spoke network, the passenger mix problem was incorporated into the model of determining airline fleet composition. The purchasing number of aircrafts in each fleet type, the frequencies of each aircraft type flying on legs and the spilling number of passengers from each itinerary were treated as decision variables. The limitations including maximum flying frequencies on each leg, available flying time each fleet type can provide and maximum passengers spilled from each flight leg were considered as constraints. A model to minimize the fleet planning cost was constructed. The numerical example shows that the fleet planning cost derived from this proposed model is 46266381.64 Yuan and reduces by 3914969.70 Yuan compared to the result from the traditional leg-based model. In hence, this proposed model is effective and feasible.
Study on the K-Shortest Paths Searching Algorithm of Urban Mass Transit Network Based on the Network Characteristics
Authors: Zhou Wei Teng , Han Bao Ming , Yin Hao Dong
Published: January 2014

K-shortest path is of great significance for urban rail mass transit operation and management especially in large-scale network. The paper has analyzed composite structure characteristics and proposed the route features of the network. According to the former analyses, the author put forward a new method to build a double-layer network model based on the train operation with the corresponding double-layer searching algorithm to solve the model in order to obtain the k-shortest paths. Finally, the rationality and effectiveness of the algorithm had been verified through the examples, which prove that it could provide a new method to get the optimal k-shortest path between different O-D pairs in large scale network, and the search efficiency could be increased more than 13%. As a path searching algorithm based on the train running timetable, it demonstrate decision support for the operation of urban rail mass transit.
Research on the Correlation of Transportation and Economic Development in Wuhan
Authors: Zhang Chen , Wang Lin
Published: January 2014

With the impetus of the national strategy of the Rise of Central China, we should pay more attention to the sustainable development and make big efforts to stimulate domestic demand, of which Wuhan is one of the most promising areas in central region. Transportation is not only the production sector to create material wealth but also the foundation to support the social economic operation. It plays an important role in promoting the development of specialized production and social division of labor. This paper theoretically analysis the impact of transportation on the economic development in Wuhan and explores the intrinsic interaction mechanism of transportation and economic development in Wuhan. It researches the effect of the change of transportation conditions on economic development in Wuhan and concludes the general law.