bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis of Influence of Fine Aggregate on Void Ratio of Asphalt Mixture
Authors: Jing Guan
Published: July 2014

Using molding with different fine aggregate, gradation, asphalt, aggregate forming and forming method, and calculate the sample porosity. The test results show that: The basalt coarse-fine aggregate molding, specimen void ratio was larger, are beyond the regulatory requirements; basalt coarse aggregate molding and limestone fine aggregate molding, specimen porosity is small, can meet the requirements of specification range. The main reason is that the basalt thin bulk density is big, and its not easy compaction.
Base Shrinkage Stress Analysis in Semi-Rigid Base Asphalt Pavement
Authors: Hou Yan Ming
Published: July 2014

In this Paper, by Using the Finite Element Method, the Shrinkage Stress of Semi-Rigid Asphalt Pavement Structure was Analyzed. the Result Shows the Shrinkage Stress is the Key Factor Resulting in the Cracking of Semi-Rigid Base. the Dry Shrinkage Stress is Caused by the Subbase Frictional Resistance Preventing the Dry Shrinkage of Semi-Rigid Base, so it can be Assumed that the Dry Shrinkage Stress is Distributed Evenly in the Total Base. Meanwhile the Distribution Characteristics of Stress along Road Length, the Distribution Characteristics of Stress along Road Depth, the Effect of the Rate of Water Loss on Shrinkage Stress, the Effect of Temperature Difference on Temperature Shrinkage Stress, the Effect of Pavement Length on Shrinkage Stress and Dry Shrinkage Stress and Temperature Shrinkage Stress were Analyzed. the Resule would Provide the Basis for Structure Design and Material of Semi-Rigid Base.
Review on Nanomodified Asphalt
Authors: Li Ping , Li Yun Long
Published: July 2014

Study on nanomodified asphalt is a hot and new topic in the field of pavement’s material research. Reviewed the application of nanomaterial and technology in asphalt pavement and elaborated the nanomodified asphalt’s composition. To make a clear understanding of nanomodified asphalt’s properties, it also analyzed the nanomodified asphalt’s formation mechanism. Based on the analysis of nanomodified asphalt, we put forward several most promising research direction in this field.
Capital Construction and Noosphere Genesis
Authors: Gayevskaya Zlata , Mityagin Sergey Dmitrievich
Published: July 2014

Human activities must not develop spontaneously being driven by its own internal logics and they should be regulated in a certain manner since they appear to be a limited aggregate of material and natural conditions. The prominent mathematician and physicist N.N. Moiseyev believed that «coevolution of human society and biosphere – within the common meaning of this word combination, - is practically a synonym of the term noosphere introduced by V. I. Vernadsky, E. Le Roy» [1, p.142.] It is highlighted in the Copenhagen Declaration (7 December, 2009) of the International Union of Architects that ‘the concept of the project sustainability” accepts all the architectural and city planning objects as a part of a complex interactive system related to its natural environment» [2]. Therefore sustainable urban development depends directly on city planning activities. Capital construction must be in harmony with consequent formation of noosphere with due regard to socially viable management of natural and anthropologic processes and relations development. A number of scientific criteria are suggested to secure socially significant capital construction management on the grounds of the theory of the noosphere genesis.
Temperature Field Analysis of CRTS-II Ballastless Track Slab Structure on Soil Subgrade
Authors: Zhao Lei , Sun Lu , Fan Tong Jiang
Published: July 2014

Temperature changes have a significant impact on the CRTS-II track structure in Beijing-Shanghai high-speed railway which has longitudinally connected type. In this paper temperature fields of ballastless track superstructure are simulated based on heat transfer theory and subroutine of ABAQUS that solar radiation DFLUX and ambient temperature FILM. The results showed that: the maximum temperature difference on the top of track slab is 20°C in summer and 10°C in winter; the maximum temperature difference in CA mortar layer is 4°C in summer and 2°C in winter; the maximum temperature difference in concrete substrate is 2°C in summer and 1°C in winter.
The Application of Discrete Element Method on Asphalt Mixture
Authors: Xiong Jian Ping , Xiong Bao lin
Published: July 2014

The discrete element method is widely used in the design of asphalt mixture in rencent years. Reviewed the relevant studies on gradation design, simulation and experiment micromechanics and summarized the problem exist in asphalt mixture. Finally we put forward several most promising direction in this field.
Research on the Differences of Retaining Wall between in Widening Highway and in the New Highway
Authors: Yang Zhen
Published: July 2014

At present, the widening highway retaining wall is often used in engineering practice, but compare to the new highway retaining wall, there is not any highlight differences on design method to the widening highway retaining wall. The paper lays on a widening highway retaining wall in an engineer, based on the analysis of the differences between the widening highway retaining wall and the new highway retaining wall, using the finite element method for modeling and analysis of the widening highway retaining wall and the new highway retaining wall, then conclude that the soil displacements and earth pressures between the two models are significantly different, finally point out the considerations in design.
A Model-Based BIM Framework for Bridge Engineering
Authors: Zou Yang , Zhou Shui Xing
Published: July 2014

The bridge infrastructure is critical to both political and economic development and Building Information Modelling (BIM) is now an innovative technology for bridges’ planning, design, construction and operation. However, it is currently difficult to achieve BIM’s practical value in bridge industry due to existing barriers. The focus of this paper is on proposing a new implemented BIM framework for bridge engineering. Particularly, the research project discussed and summarized the barriers which affect effectiveness and collaboration existed in traditional bridge project delivery and proposed a detailed BIM framework based on the traditional workflow to embrace collaboration and interoperation in the whole lifecycle of a bridge. The framework can significantly facilitate integrating BIM tools and practices, and increase the collaboration and productivity throughout the whole process of a bridge.
Mistakes for Preservation of Historic Blocks - Reflection on Old-Town Renovation of Beiliang District in Baotou
Authors: Sun Li Ping
Published: July 2014

According to the discussion of the problems and the analysis of the present situation of the old-town renovation of Beiliang district in Baotou, some mistakes for preservation of historic blocks are to be indicated, which should be concerned by people of all walks of life.
Effect of Viscous Damper Position for Isolation System of Self-Anchored Cable-Stayed Suspension Bridge
Authors: Miao Feng
Published: July 2014

Larger displacement and inter-force response of the structure will be produced when self-anchored cable-stayed suspension bridge in longitudinal earthquake. For the isolation system of self-anchored cable-stayed suspension bridge, whose main tower is set the lead core rubber isolation bearing. This essay does the nonlinear time history analysis under the longitudinal earthquake about the isolation system when the viscous damper is put in different location. Analysis results show that inter-force and displacement of control section and control node are reduced greatly in hybrid vibration control. The result is obvious when the viscous damper is set both in the main tower, the side block and only in the main tower.
Research on Investment Estimation Model of Municipal Bridge Engineeringa — A Case Study of Hollow Slab Girder Bridge
Authors: Ke Hong , Xu Zhong , Li Sai
Published: July 2014

In order to improve the work on investment estimate of municipal bridge project,the paper screens the impact factor of municipal bridge project investment estimation to build municipal bridge project investment estimation model. It regards hollow plate girder bridge as the research object.It obtains the initial set of impact factor affecting municipal bridge project investment model by analyzing the relevant literature using the method of information precipitation.And it screens out 10 feasibility impact factor set by analyzing the data collected by the questionnaire with membership degree analysis.
Mechanical Features of Cable-Girder Anchorage for Long-Span Railway Cable-Stayed Bridge with Steel Box Girders
Authors: Yao Chao Yi , Pu Qian Hui , Yao Ya Dong
Published: July 2014

The cable-stayed bridge got rapid development in recent years. And for long-span cable-stayed bridges, the cable-girder anchorage structure is a key component in designing. The function of the cable-girder anchorage structure is to transfer the load between cables and the main girder. With the complex load transfer mechanism and stress concentration induced by large cable force, rational design of cable-girder anchorage structure is critical to long-span cable-stayed bridges. Take a certain long-span railway cable-stayed bridge in Zhejiang Province as the investigation, the load transfer mechanism and the stress distribution state was studied by finite element model. The research indicated that the design of this anchor box was rational. The stress distribution on each plate of the anchor box was relatively uniform. And the load transfer path and mechanisms of the main components of this anchor box were clear.
Study on Nondestructive Testing Method of Vertical Prestressed Reinforcement Tension in Box Girder
Authors: Gao Yong Qing , Zhu Jin Peng , Zhang Feng , Qi Guang Zhi
Published: July 2014

The diagonal cracks in the web of box girder bridge which caused by excessive loss of vertical prestressed tensioning force are particularly common. In order to effectively detect the real force of the vertical prestressed rebars. Take the exposed section of the vertical prestressed rebar as an analysis entity, and take the rebar as a rigid body; the anchoring segment is simulated by an annular outrigger and an annular elastic support. When vertical pretress tension changes, the stiffness of elastic support and the vibration frequency also change accordingly, the change of the value of tensile force can be reflected by the vibration frequency. Combined with the model test data, the nonlinear elastic parameter model between the finish .deformed rebar vertical tensioning forceTand the space elastic support stiffnessKis established. The validity of the method was checked by extension test. The study indicate that this method is accurate, fast and convenient for engineering applications, can effectively improve the construction quality.
A Survey on Development of Energy Service Industry in Zhejiang China
Authors: Qu Yan , Wang Xu Yan , Darkwa Jo
Published: July 2014

Energy service industry (ESI) has grown quickly recent year in China. A main and important role in ESI is Energy Service Company (ESCO) which engages in reducing energy consumption through retrofitting the existing facilities. This survey focuses on the development of energy service industry in Zhejiang involving opportunities and barriers of the growth of ESCO. The results show that generating a third-party finanicing network, building more perfect policies and regulations and raising credit awareness are significant factors for healthy development of ESI.
Application of Stress-Free Status Control Method in Bridge Construction Control
Authors: Liao Yuan , Zhan Jian Hui , Li Chen
Published: July 2014

The paper describes the basic principles of stress-free status control method and application in construction control of various phased construction bridge.Through a series of engineering example calculation and analysis shows that: the method can solve all kinds of problems in bridge construction control calculation directly and efficiently, its application and promotion can promote the whole bridge construction control level of progress.
Research on Calculation Method of the Stability Factor of Variable Cross-Sectional Concrete Filled Steel Tubular Laced Columns
Authors: Ou Zhi Jing , Huang Lei , Yan Qiao Ling
Published: July 2014

The finite element analysis method of variable cross-sectional Concrete-Filled Steel Tubular (CFST) laced columns is put forward. The influence of longitudinal elements slope and slenderness ratio on stability factor are analyzed, and the computational formula of slenderness ratio of variable cross-sectional CFST laced columns is presented. On the basis of the analytical results, a rational methodology for calculating the stability factor of four-element variable cross-sectional CFST laced columns is proposed.
On the Development and Innovation of Modern Suspension Bridge in China
Authors: Zhao Heng Qian , He Xiong Jun , Zhao Ming , Zhao Jia Wei
Published: July 2014

This paper mainly discusses on what should be paid attention to when innovative ideas in bridge construction are put into practice through analyzing the achievements of China’s modern suspension bridge construction since the initiation of China’s reform and opening up to the outside world. In recent years, some new concepts have been put forward in stiffening beams, cable saddles, cable bent towers and other aspects of the suspension bridge during its development. Among them, some are innovative and useful indeed while some merely meaningless. Analyzing the innovations of suspension bridge has a guiding significance for China’s bridge construction in the future.
Evaluation of Low-Carbon Development Level for Yangtze River Delta City Group
Authors: Sun Hua Li , Zhou Bing Yan , Xue Yao Feng , Cui Quan Yi
Published: July 2014

A set of evaluation index system including 13 indexes of low-carbon city development level was established based on the driving forces-pressure-state-impact-response model. The development level of low-carbon economy of 25 cities in Yangtze River Delta was evaluated by factor analysis. The results showed that the development level of low-carbon economy in Shanghai was the highest, and the average levels of low-carbon economy of Zhejiang and Jiangsu province were similar. But there is much difference between the north part and the south part in a same province. In Zhejiang province the level of the north part was higher than the south part. Conversely, the level of the north part was lower than the south part in Jiangsu province. Lastly, the adjustment of industrial structure, increasing of the environmental investments and the awareness of low-carton ideas to the public are suggested to promote the development level of low-carbon economy.
Ultimate State of Bridges with Soil-Pile-Structure Interaction under Extreme Earthquakes
Authors: Lee Tzu Ying , Chung Kun Jun , Chen Peng Yu
Published: July 2014

This paper is aimed to analytically study the ultimate state of bridges with seismic soil-pile-structure interaction. Since the Vector Form Intrinsic Finite Element method is superior in managing highly nonlinear engineering problems even with fracture and collapse, it is used in this study to predict the failure process of bridges. During an extreme earthquake, soil may undergo plastic behavior, and piles may go through cracking, plastic hinge, even fracture. In this study, several nonlinear soil-spring models are developed to simulate the soil-structure interaction behavior under strong ground motions. Through a series of parametric studies, the failure modes are demonstrated for bridges with pile foundation. The result showed that, both soil and piles went through plastic behavior. It is suggested to analyze bridges under strong ground motions by using nonlinear soil elements for realizing the actual dynamic behavior.
Analysis of Effect of Fetching Girder from Trestle of Long-Span Steel Truss Bridge under Cantilever Erection
Authors: Luo Xu , Fu Xin Sha , Gu Li Xiong , Cai Lu Rong
Published: July 2014

A large span steel truss bridge, it assembles "high, big, difficult, new, deep, steep, dangerous, heavy", etc., "eight" features in a body. In order to reduce the number of transportation ships and make the erection convenient, this paper studies a set of revolving beam erection scheme to improve the utilization efficiency of trestle. Through calculation, it is found that fetching girder directly from trestle is feasible. cantilever erection of the girder , The main truss linearis of the steel truss girder upstream and downstream has slightly deviation with the operating angle change of the cantilever crane and it need to stop lifting when monitoring and measuring, and the mast should be placed along the bridge direction.
Research of Shaanxi Province Urbanization Development Quality Evaluation Based on the Entropy Value Method
Authors: Liu Zheng Shun , Wei Hai Min
Published: July 2014

The weakness of the existing system of urbanization comprehensive evaluation is: evaluation Indexes were not comprehensive, and the evaluation system can’t reflect the real situation; analysis method was complex, and difficult to operate. We established evaluation index system from the economic development, social development, living, environment, infrastructure, spatial density, and urban-rural gap. We used entropy and comprehensive evaluation method to process and analyze the indicators. The results show that the quality of urbanization development is obviously different in Shaanxi Province, the effect of secondary cities is not obvious to promote the development, and the internal gap is still large in provincial cities and sub-index level.
Loading Tests of Experimental Models of an Integral Bridge Loaded by the Effects of Water Pressure during Floods
Authors: Tej Petr , Kolisko Jiří , Bouška Petr , Vokáč Miroslav , Bittner Tomáš , Čech Jindřich , Vráblík Lukáš , Šístek Milan
Published: July 2014

This paper presents an experimental and computer analysis of an integral bridge structure exposed to a load caused by the horizontal pressure of water during floods. The paper focuses on the residual load-bearing capacity of an integral bridge structure that was able to withstand the effects of flooding. ​​Three models of integral bridges built to a scale of 1:5 were made for the purpose of testing. The frames have a span of 2.6 m, the thickness of the supports is 0.2 m, and the thickness of the deck in the middle is 0.125 m. The frames are loaded by horizontal forces representing the water pressure during floods. Each frame is securely anchored at the base and is gradually loaded by two horizontal forces situated in the corners of the frame. Loading is interrupted when cracks of 0.3 mm appear. Subsequently, the frame is loaded by a pair of vertical forces acting on the top surface of the frame, up to the load-bearing capacity. This procedure was established in order to find the residual load-bearing capacity of an integral bridge that managed to withstand the effects of flooding. . The paper includes a set of computer simulations.
Bearing Capacity Analysis of Reinforcement for the Double Curvature Arched Bridge in Service
Authors: Zhang Yue , Ao Hai Xia
Published: July 2014

According to the disease status of a dilapidated double curvature arched bridge in Baotou city, the reinforcement scheme of Shotcrete Increasing the Section is proposed. The finite element model was established by Midas software. The simulation analysis results show that for the bridge span structure after reinforcement, the bearing capacity and stiffness is increased significantly, the displacement and stress is reduced effectively, the overall mechanical performance is improved, the reinforcement scheme is practicable.
Capturing Riding Characteristics of Double-Deck Bridges under Multi-Lane Moving Vehicles
Authors: Si Xue Tong , Chen Ke Jian , Guo Wen Hua
Published: July 2014

This paper investigates the characteristics of riding comfort of double-deck bridges under multi-lane moving vehicles based on a framework for spatial dynamic analysis of double-deck bridges carrying both road vehicles and monorail trains taking into account road surface roughness and both vertical and lateral track irregularities. The bridge is modelled by finite elements with proper boundary conditions. And the road vehicle is modelled as a mass-spring-damper system with 7 degrees of freedom (DOFs) while that of the monorail train has 15 DOFs. Then holistic bridge-vehicle interaction system was assembled using a fully computerized approach and solved by direct integration method. The riding characteristics of an authentic long-span bridge carrying both road vehicles and monorail trains are investigated in details as per ISO 2631.
Optimization of Cable Force of Extradosed Bridges
Authors: Kou Chang Huan , Wu Tsung Ta , Lin Pei Yu
Published: July 2014

In order to solve structural optimization problems in the past, it is necessary to integrate structure analysis software and optimization software. Since structural analysis has been the only function considered when developing most of structure analysis software, they suffer from closeness of system. Therefore, it is not easy to integrate them with optimization software. This study proposes an experimental design method to solve this problem including following steps: (1) generate experimental design, (2) implement experimental design, (3) construct a response variable model, (4) define optimization problem, (5) solve optimization problem. The purpose of step (1) through step (3) is to create a response variable model of alternative structure analysis software. This model is a set of regular and simple functions, it can easily define the optimization problem in step (4), in order to facilitate step (5) to solve the optimization problem. The reason to employ neural network instead of traditional regression analysis in step (3) is that the relationship between internal forces and displaced cross section dimension of the structure are often nonlinear. Neural network is a nonlinear system that gives itself the greatest advantage to accurately construct a nonlinear model. This case study is based on optimization design of cable force and tower height in an extradosed bridge, evaluating the feasibility of above method and comparing with published references to confirm the proposed method in this study is applicable to the optimization design of extradosed bridge.
Prestressed I-Beams of 12 m Span Made of Ultra-High Performance Concrete for Construction of Railway Bridges
Authors: Tej Petr , Kolisko Jiří , Bouška Petr , Vokáč Miroslav , Čech Jindřich
Published: July 2014

This paper focuses on research of prestressed I-beams made of ultra-high performance concrete (UHPC), which are designed to be structural elements in small and medium span railway bridges. Prestressed concrete I-beams are designed with ten prestressing cables in the bottom flange. The prestressed beams are laid close together in the actual structure, with panels inserted between them. The entire structure will subsequently become monolithic. At the present time, I-beams made of rolled steel are commonly used as structural elements in this type of structure. The advantage of these types of structures lies in their having low construction height. This paper presents a computer and experimental analysis of loading of UHPC prestressed I-beams. For the purpose of the experiments, three specimens of 12 m span were made. The specimens were subsequently tested in the laboratory in four-point bending tests. The paper presents the process and results of the experiments. Simultaneously with the experiments, computer analyses were created in which optimization of the material and geometric parameters of the beams were carried out. The paper demonstrates the correspondence of the experimental and computer-simulated load test results.
Research on Working Behavior of Prestressed Curved Girder Bridge
Authors: Wang Fan , Luo Zhi Feng , Mo Sheng Hao
Published: July 2014

Prestressed curved girder bridge is a important structure type in modem traffic engineering.With the development of economical level and situation of the opening in our country,a large lumber of curved girder bridge have been taken for its favorable linearism and good adjustability in any kinds of ground.This paper illustrates the working behavior of the prestressed curved girder bridge and use ABAQUS to analysis a simple prestressed curved girder bridge.
Sensitivity Analysis of Continuous Curved Bridge under Different Curvature Radius
Authors: Luo Mu Xin , Gao Jing Hong
Published: July 2014

In the condition of the same span, to change the continuous curved bridge's curvature radius and under the dead load and moving load to compare how the internal force changes in different curvature radius. The finite element model is established to simulate the actual structure by Midas Civil. Results in a continuous curved bridge which main span of less than 60m, under the dead load, bending moment (-y) is unlikely to change, reinforced by a straight bridge can meet the requirements; under the moving loads, the curvature radius of the bending moment (-y) has little influence, should focus on increase in torque and bending moment (-z).
Study on the Prestressed Arrangement in Cable-Pylon Anchorage Zone of Cable-Stayed Bridge
Authors: Yu Xiao Lin , Jia Bu Yu , Huang Kang , Yan Quan Sheng
Published: July 2014

According to the study on the practical Chaolianxijiang bridge, the stress state of cable-pylon anchorage zone of cable-stayed bridge under two kinds of prestressed arrangements (that is, U-shaped arrangement and parallel arrangement) were calculated and compared. The results suggested that parallel prestressed arrangement could avoid the difficulty caused by other arrangements in the construction. Parallel prestressed arrangement with clear concept, simple structure, clear stress and small amount of work is suitable for the thick walled cable-pylon.
Static Loading Test and Evaluation of Single Beam of Highway Prestressed Concrete Hollow Slab Beam Bridge
Authors: Chen Tai Li , Li He , Wang Zhi Hao , Li Xiao Ke
Published: July 2014

Since the main beams of a prestressed concrete hollow slab beam Highway Bridge stored for too long, in order to assess its bearing capacity, static loading test and bearing capacity evaluation of single beam was conducted. The hollow slab beam at the locations where the transverse distribution coefficient is biggest was chose for testing, and the transverse distribution coefficient at midspans of the slab beam was calculated by the hinged slab method. By comparing the theoretical and measured values of displacement and stain at key points of the beam, structural performance of the beam was finally evaluated. The test results showed that both the strength and stiffness of the beam was conforming to the requirements of the specification and able to satisfy normal use requirements in serviceability limit state.
The Technical and Economic Comparison of Reinforcing Schemes of Stone Arch Bridge
Authors: Li Hong
Published: July 2014

This paper made summary and analysis of the common stone arch bridge reinforcing techniques, researched their mechanism and the principles of choosing strengthening method. Given some practical suggestions on the choice and design about arch bridge reinforcing scheme.
Parking Demand Forecast Method of Big City and its Application
Authors: Yu Jing Fei , Gong Xiu Ling , Zhang Xin Jie
Published: July 2014

Parking is difficult in today's social problems faced by big cities. To solve this problem, a new parking facility planning and design was required and the parking demand forecast is a very important step in this process. The paper first discusses the necessity of parking demand forecast and the development process of parking demand forecast model, then a few parking demand forecasting model were compared and analyzed, final the motor vehicle OD method was selected to forecast parking demand according to the characteristics of the parking demand forecast and urban transport planning simultaneously. The results show that the precision of prediction results is acceptable.
Research on the Optimization Model of Berth Allocation-Quay Crane Assignment-Truck Scheduling at Container Terminals
Authors: Gao Zhi Jun , Wu Chun Ji , Zhao Qing Yu , Cao Jin Xin
Published: July 2014

The major difficulties of the operation of loading, unloading and transportation at container terminals are how to schedule berths, quay cranes and trucks more effectively and efficiently. Therefore, how to optimize their configurations effectively and connect them more reasonably is a problem which should be solved eagerly. However, a reasonable and effective optimization model is the basis and the key of this problem. The operation time of container terminals mainly depends on the time of ships in port and the operation time of trucks, quay cranes and yard cranes. So, the objective of this paper is to minimize the sum of these four parts. An optimization model based on some reasonable and necessary hypotheses is proposed and an algorithm and procedure are designed.
The Integrated Yard Truck and Yard Crane Scheduling and Storage Allocation Problem at Container Terminals
Authors: Chen Li Hua , Gao Zhi Jun , Wu Chun Ji , Cao Jin Xin
Published: July 2014

The storage block allocation, the yard truck and yard crane scheduling are three separate sub-problems in container terminals, playing an important role in the efficiency of port discharging operations. This paper proposes an integer programming model considering these three problems as a whole. The objective is to minimize the time when all the unloading operations have been completed and all containers have been stacked at storage block. A Local Sequence-Cut (LSC) method is developed to solve the problem.
A Method of Bike Sharing Demand Forecasting
Authors: Liu Xiao Na , Wang Jian Jun , Zhang Teng Fei
Published: July 2014

Bike sharing system is an important part of urban public transport system, mainly to undertake the function of connection and transfer with bus system, and connection with private car and satisfy the demand of citizen short-distance travel, and other functions. Setting bike sharing rental point is according to the planning of urban comprehensive transportation, using data on the residents travel , including travel rate, traffic structure, etc. and then to predict the proportion of future bike sharing to the total amount of travel, finally obtain bike sharing overall scale combining Bike sharing turn over rate.
Study on the Bike Path Width Considering the Electric Bike
Authors: Tao Si Ran , Niu Xiao Jing , Chen Kuan Min
Published: July 2014

More and more electric bikes appear on urban roads. Conclusion, which based on the analysis of the differences between electric bikes and ordinary bikes in size, speed, is that existing bike-lane-width calculating method cannot meet the needs any more. This paper presents a method to correct the calculation of bike paths width in urban area.
Study on the Characteristics of the Bus Trip of the Elders in Nanjing
Authors: Yang Wan Yu , Liao Yuan Ming , Zheng Shi Yu
Published: July 2014

The aged tendency of population in Nanjing has become more and more serious. As an important part of the elders’ daily life, bus trip deserves a close examination from different perspectives and in different ways. In order to understand the travel patterns and the use of the city’s transit system of the senior citizens in Nanjing, this paper conducts a survey on the elderly. Analyses yield the overall travel characteristics, travel frequencies, and the main travel modes of the elderly in Nanjing. The rules of variation of elders’ travel behaviors with age and the choice of the main travel modes of the elderly in 20 years have been analyzed and predicted. Taking convenience, cost, speed, comfort, safety and free choice of travel time as the influencing factors, the estimation model is developed by binomial Logit model. Besides, in order to solve some common problems in bus service, we put forward some suggestions referred to other districts, as well as having an outlook of the bus service in the future.
From Disordering Center Competition to Space Cooperation: Constructing Central Triangle Metropolitan Areas
Authors: Wu Zhi Chao
Published: July 2014

Current development of metropolitan area is appearing the trend of multi-center. This thesis analyses the predicament of the disordering center competition that the developments of Wuhan city circle, Changsha-Zhuzhou-Xiangtan city groups, Poyang Lake Rim Ecological Economic Zone are facing. Based on the reality that the metropolitan areas are geographically adjacent, culturally similar, sharing the same objective and industry convergent, this paper thinks about the space cooperation of metropolitan areas. Aimed at providing some suggestions for the development of central triangle metropolitan areas, the development assumption of central triangle metropolitan areas construction has been proposed, and corresponding coping measures have been put forward to deal with spatial order, space function, spatial relationship and spatial security.
Comprehensive Evaluation for Urban Rail Transit Network Based on TOPSIS Model
Authors: Wang Ying , Chen Kuan Min
Published: July 2014

A comprehensive evaluation system was proposed in terms of operational effect, network structure, social benefits, strategic development and implementation. The indicators layer was taken as the index set, and the network programs were taken as the domain set to establish the original decision-making matrix. The comprehensive weights of the indexes were determined by the AHP and Entropy Method, with giving full consideration to the expert knowledge and experience, as well as data itself implies. Also, the weighted normalized decision-making was constructed. The positive and negative ideals were determined based on the TOPSIS, the pros and cons of the line networks were determined by calculating the degree of closeness of the programs to the negative ideal solution. This method was applied to Xi’an urban rail transit network planning. The result shows that this method has a better application prospect for its simple calculation and scientific decision.
Investigating Pedestrian Behavior Differences of Walking Streets and their Effect Factors with Three Wuhu Cases
Authors: Liu Bing , Wang Zhi Wei , Zhou Yu Bin
Published: July 2014

It is found that the use of pedestrian streets varies widely in Chinese cities. This paper was intended to compare the pedestrian behavior characteristics and to discuss the effects of market competition, built environment and mobility governance of walking streets, taking three cases in Wuhu city for study. Except pedestrian flow, trip purpose, trip frequency, travel distance, dwelling time and mode share was compared based on sampling questionnaire survey. It further investigated pedestrians’ satisfaction and dissatisfaction with the streets, as well as main factors affecting pedestrians’ behavioral preferences, including the scale and types of business activities, landscape, circulation and transit service of the streets. The author concludes that market comparative advantage, pleasant walking environment and good transit accessibility are keys to enhancing the vitality of walking streets.
Design and Improvement of Material Handling Apparatus in the Machine Shop of Company Z
Authors: Pei Xiao Bing , Li Ou Yang
Published: July 2014

The paper proposed the method to design and improve material handling apparatus in the machine shop of Company Z. It is of great significance to improve logistics efficiency and reduce the fatigue of workers.
The Optimization of Arriving and Departing Time of Trains in Urban Rail Transit Based on Passenger Transfer
Authors: Sun Jie Ping
Published: July 2014

In this paper, there is a study on the effect of the lack of coordination between trains in the network, such as waiting aggravation, travel time extension. Through the study of the practical operation process and passenger transfer characteristics of urban rail transit, according to the types of line crossing, taking the minimized waiting time of all transfer passengers in station as the object function, the optimization model was designed for three lines with two intersections, solve the model by using the Lingo, and transfer stations, Xidan and Dongdan station, from lines No.1 No.4 and No.5 of Beijing Subway Network are chosen as an example to validate its rationality and availability. The result shows that the model is of important significance to reduce the travel time for transfer passengers.
The Instance Analysis on the Urban Rail Transit Transfer Stations with Multiple Lines
Authors: Liu Yang , Chen Kuan Min , Li Yong Ling
Published: July 2014

With the increasingly widespread attention on the construction of urban rail transit in big cities, it has aroused general concern about the normative and elaborative design of rail transit stations. Which becomes focal point of the research of urban rail transit is how to design effective and beautiful rail transit stations with legible and reasonable streamline organization. This paper focuses on the instance analysis on the design of foreign and domestic stations with multiple lines of urban rail transit at first. After the rail transit lines are classified into parallel and intersectant lines, the applicability and functional characters of urban rail transit transfer modes are summarized and concluded particularly with the line location modes, which is expected to provide references for the design of urban rail transit stations in China.
Optimizing Supply and Demand in Coal Logistics Networks
Authors: Guan Xiao Jun , Wang Xi Fu , Fan Hao Kun , Wu Wan Jing
Published: July 2014

China has a "North coal to south, West coal to east" overall pattern of coal transportation. This paper focuses on how to optimize the distribution of supply and demand, which can effectively reduce the total transportation costs. In order to study the optimization problem, we build a linear programming model, and solve it through commonly used mathematical programming software CPLEX. Then, taking Shanxi as an example, the proposed model was verified. By introducing supply point capacity limits, make our model more adaptable to the actual situation.
Effect of CaCO3 Pretreatment on Methane Production from Anaerobic Digestion of Rice Straw
Authors: Dai Ben Lin , Zhu An Feng , Mu Fei Hu , Xu Ning , Wu Zhen
Published: July 2014

The chemical pretreatment of rice straw was achieved via the liquid-state dissolution of CaCO3. Pretreatment effects on the biodegradability and subsequent anaerobic production of methane were investigated. The results showed that the peak value of biogas production was attained of 4% CaCO3 pretreatment on the 20th day, which is 1 589 mL. The test daily methane content of different pretreatment conditions mainly ranges from 3.4% to 47.4%. The cumulative biogas production of 6% CaCO3 pretreatment was the highest, about 19 917 mL.
Optimal Signal Timing of Single Intersection for Traffic Emission Control
Authors: Li Xin , Chen Feng
Published: July 2014

Traffic emission is one of the main pollution sources of urban atmospheric environment. Traffic control scheme of intersection has important influence on vehicle emission. Research on low emission traffic signal control scheme has become one of focuses of Intelligent Transportation. Current typical control methods of traffic emission are based on optimizing the average delay and number of stops. However, it is extremely difficult to use mathematical formula to calculate the delay and the number of stops in the presence of initial queue length of intersection. In order to solve this problem, we proposed a traffic emission control algorithm based on reinforcement learning. The simulation experiments were carried out by using the microscopic traffic simulation software. Compared with the Hideki emission control scheme, the experimental results show that the reinforcement learning algorithm is more effective. The average vehicle emissions are reduced by 12.2% for high saturation of the intersection.
Power Quality Problems and their Monitoring of Urban Rail Transit
Authors: Chen Ming Ming , Li Zhong
Published: July 2014

The power quality problems in urban rail transit construction, not only brings security and stability problems to the power grid, also brings the hidden dangers to their own equipment safe operation. How to effective monitoring the power quality of urban rail transit power supply network , how to grasp the level of power quality problems, effective governance the hidden trouble of power quality problems, and effective improve the stability and the safety of the rail transit operation , have great significance.This paper analyzes the power quality problems and harms in rail transit, introduces the basic function of the monitoring system, proposes the system construction scheme, and elaborates the data communication and interaction, which has higher reference value and practical significance.
Security Design in Tianjin City Expressway Entrances and Exits
Authors: Zhang Juan Zi
Published: July 2014

According to traffic safety factor analysis of freeway entrances and exits, this paper use traffic behavior and traffic conflict theory, select the number of conflicts as the evaluation index, use SSAM software to analyze the safety factors in freeway entrance area. On this basis, this paper put forward recommendations about intersection traffic safety design.
Analysis on the Anti-Glare Plate Setting Distance on Horizontal Curve Sections of Expressway
Authors: Xiao Tian , Sun Ji Shu , Jin Can Zhang
Published: July 2014

Glare is one of the most important factors threating expressway traffic safety an night. The most commonly way to prevent glaring night is to set anti-glare plate. Different from the straight sections of expressway, the relationship between the front light of vehicles and the distance of anti-glare plate on the horizontal curved section has some-what changed. Through a lot of tests and finite element simulation, the relationship between the distance of anti-glare plate, horizontal curve radius and anti-glare effect were analyzed systematically. Distance calculation formula of anti-glare plate in horizontal curve sections was revised in this paper. The anti-glare plate distance requirement under different expressway alignment design indexes and its calculation formula was proposed. The achievement was beneficial to confirm the anti-glare effect and improve traffic safety. It can provide us with a reference and a supplement of the specification.
Sensitivity Analysis the Ticket Price of Hangzhou to Shaoxing Intercity Line Based on the Equilibrium Model
Authors: Peng Hui , Wei Wei
Published: July 2014

Intercity rail transit's ticket prices as the key sensitive factors affect passenger flow, which is related to the accuracy of the prediction.This paper provides a model based on equilibrium price sensitivity analysis method. In order to make clear the relationship between the intercity rail transit ticket price and passenger flow, analysing the average operation time, cost and other influence factors, establishing the utility function to calculate the utility value, according to the equilibrium flow model of passenger flow, we can get the passenger flow of all kinds of transportation under the equilibrium traffic, on this basis, the sensitivity analysis model is used to get the connection between the traffic and the travel ticket in different modes of transport, In the end ,taking Hang-Shao intercity rail transit for example to analysis the sensitivity of the price. The research results show that the model and the algorithm has the higher reliability.
Comparison of Capacity of Intersection with Connection Lane on the Left of Running Lane and the other Types of Intersections
Authors: Krivda Vladislav , Mahdalova Ivana
Published: July 2014

The paper deals with problems of capacity assessment of intersection with the connection lane on the left of running lane and intersections with traffic light and roundabouts. The paper describes capacity calculations for controlled intersections and roundabouts according to Czech standards and shows comparison of calculated capacity reserves of these types of intersections with reserves determined on intersection with the connection lane on the left of running lane on concrete example with real traffic flow volume values.
Waiting Area Research at Large Intersections in Hohhot
Authors: Liu Zhen Yu , Wang Jing Peng , Song Zhi Hui , Jia Tian Qi
Published: July 2014

The vehicle-waiting area has an important role in making effective use of space resources, reducing delays and improving the capacity of the intersection. This article analyzed the current situation of intersections in Hohhot and proposing channelized solutions against some intersections to improve the capacity. Furthermore, we made an empirical study of "Zhaojun road-Erdos Street" intersection in Hohhot and proved the effectiveness of improved methods by VISSIM.
Study on Cost of Green Building Based on the Life Cycle Theory
Authors: Yin Yi Lin , Bai Juan
Published: July 2014

Currently, there exsits a Serious resource wasting phenomenon. In order to achieve the sustainable development of construction industry, the development of green building has become the inevitable choice of all countries in the world. This paper based on the sustainable development as the guiding ideology, through the basic theory of green building, based on the life cycle cost theory understanding as the foundation. First of all ,know the current situation of the development of green building cost at home and abroad, then according to the life cycle theory will be divided into green building decision-making, design, construction debugging, operation maintenance and recycling discarded five stages, points out the life cycle cost characteristics of green building.
Two-Sided Matching with Ordinal Numbers and Costs
Authors: Yue Qi
Published: July 2014

A novel decision method for solving the two-sided matching problem is proposed in this paper, in which the preferences provided by agents are in the format of ordinal numbers and the preference provided by intermediary is in the format of costs. The concept of two-sided matching is firstly introduced, and the two-sided matching problem with ordinal numbers and costs is discribed. Then the related concepts on costs are given. Considering the ordinal number of each agent and the cost of intermediary, a multi-objective optimization model is set up. The method of weighted sums based on membership function is used to convert the multi-objective optimization model into a single-objective model. By solving the model, the matching alternative can be obtained.
Simple Criteria for Block H-Matrices
Authors: Gao Hui Shuang
Published: July 2014

In this paper, a sufficient and necessary condition for judging block strictly -diagonally dominant matrices is given firstly. According to the given condition, a new practical criteria for block H-matrices is obtained.
Zhangjiakou a Residential Building Envelope Structure Optimization Design
Authors: Ma Hong Lei
Published: July 2014

The energy consumption of a residential building Zhangjiakou area in different envelope was numerically simulated by using DeST software, and the influence factors on building energy consumption was analyzed, which provides a certain reference for optimization design of building structure Zhangjiakou region.
A Design for Electric Heating Thermostat System Based on ZigBee in Intelligent Building
Authors: Zhao An Jun , Wu Min
Published: July 2014

The system uses DS18B20 as a temperature sensor to collect temperature data on spot, uses ZigBee as wireless transmission module, and uses C8051F020, a single chip as a processor. The temperature control module issues instructions to achieve real-time control of the indoor temperature so as to control the temperature under established standard. The system can effectively reduce energy consumption.