A Method for Predicting Probabilistic Resource Conflicts between Trains

The development of high-speed railway construction and operation greatly shorten people's travel time, however, the demand of people on travel time reliability becomes more and more prominent, so train dispatching plans are becoming more and more important. This paper defines probabilistic conflicts between trains, analyses probabilistic conflict influence factors and comes up with a method for predicting probabilistic resource conflicts between trains. The method aims to improve the accuracy of train conflict prediction, provide more reliable basis to solve train conflicts and develop more efficient train dispatching plans.

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Monitoring abandoned dreg fields of high-speed railway construction with UAV remote sensing technology

10.1117/12.2207421 ◽

2015 ◽

Cited By ~ 1

Author(s):

Jiayuan Lin ◽

Zhiliang Wang ◽

Yangchun Wang ◽

Yi Lin ◽

Xiaolin Du

Keyword(s):

Remote Sensing ◽

High Speed ◽

High Speed Railway ◽

Railway Construction ◽

Remote Sensing Technology ◽

Sensing Technology

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Study on Prediction Model of Shrinkage and Creep of Prestressed Concrete Beam in Passenger Dedicated Line

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.255-260.3998 ◽

2011 ◽

Vol 255-260 ◽

pp. 3998-4002

Author(s):

Jun Li Luo ◽

Zhi Sheng Xu ◽

Jun Li ◽

Ji Hao Yang

Keyword(s):

Prestressed Concrete ◽

High Speed ◽

Concrete Beam ◽

Influence Factors ◽

Creep Model ◽

High Speed Railway ◽

Modified Model ◽

Shrinkage And Creep ◽

Prestressed Concrete Bridge ◽

Passenger Dedicated Line

To improve the calculation precision of deformation in prestressed concrete bridge in passenger dedicated line and accurately predict the development of shrinkage and creep in bridge, a universal applicable modified model was put forward in this paper based on ACI 209R(1992) shrinkage and creep model. In the modified model, three influence factors-slump, strength and reinforcement - are corrected. And the modified model results were compared with the experimental results. It shows that the modified model can more accurately predict the development of shrinkage and creep of high-speed railway bridge and better accord with the law of it.

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Optimal High-Speed Railway Timetable by Stop Schedule Adjustment for Energy-Saving

Journal of Advanced Transportation ◽

10.1155/2019/4213095 ◽

2019 ◽

Vol 2019 ◽

pp. 1-9

Author(s):

Dingjun Chen ◽

Sihan Li ◽

Junjie Li ◽

Shaoquan Ni ◽

Xiaolong Liu

Keyword(s):

Energy Consumption ◽

Energy Saving ◽

Travel Time ◽

High Speed ◽

Optimization Techniques ◽

High Speed Rail ◽

High Speed Railway ◽

Running Time ◽

Total Travel Time ◽

Timetable Optimization

Timetable optimization techniques offer opportunity for saving energy and hence reducing operational costs for high-speed rail services. The existing energy-saving timetable optimization is mainly concentrated on the train running state adjustment and the running time redistribution between two stations. Not only the adjustment space of timetables is limited, but also it is hard for the train to reach the optimized running state in reality, and it is difficult to get feasible timetable with running time redistribution between two stations for energy-saving. This paper presents a high-speed railway energy-saving timetable based on stop schedule optimization. Under the constraints of safety interval and stop rate, with the objective of minimizing the increasing energy consumption of train stops and the shortest travel time of trains, the high-speed railway energy-saving timetable optimization model is established. The fuzzy mathematics programming method is used to design an efficient algorithm. The proposed model and algorithm are demonstrated in the actual operation data of Beijing-Shanghai high-speed railway. The results show that the total operating energy consumption of the train is reduced by 3.7%, and the total travel time of the train is reduced by 11 minutes.

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Nighttime Monitoring and Assessment Technology of Subgrade Settlement for Chengdu-Guanxian Line during Operation Period

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.742.13 ◽

2013 ◽

Vol 742 ◽

pp. 13-18

Author(s):

Qian Su ◽

Wei Jiang ◽

Kai Jiang ◽

Yu Jie Li ◽

Ling Ling Yang

Keyword(s):

High Speed ◽

Influence Factors ◽

Residual Deformation ◽

High Speed Train ◽

High Speed Railway ◽

Ballastless Track ◽

Operation Period ◽

Assessment Technology ◽

Railway Passenger ◽

Maintenance Plan

The criterion for residual deformation of Substructure of ballasteless track on railway passenger dedicated line is extremely strict in order to satisfy the safety and comfort requirements of the high-speed train during operation period, urgent need to strengthen the ballastless track lines settlement deformation observation, prediction and assessment technology. Based on Chengdu-Guanxian line, this paper puts forward observation programs of subgrade settlement combined with the characteristics of Subgrade Settlement through the analysis of the influence factors of subgrade settlement deformation and key consideration about the factors of nighttime observation precision. It shows that the monitoring and assessment technology could meet the requirements through the analysis of field data, it can be guidance of railway management departments to make maintenance plan. Some advices provide reference for the monitoring and assessment of high-speed railway subgrade settlement during operation period.

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Back Analysis of Parameters and Settlement Prediction of Chengdu Clay Ground Considering Its Creep Behavior

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.671-674.23 ◽

2013 ◽

Vol 671-674 ◽

pp. 23-26 ◽

Cited By ~ 1

Author(s):

Yan Feng ◽

Jian Fang Li

Keyword(s):

High Speed ◽

Back Analysis ◽

Elastic Parameters ◽

High Speed Railway ◽

Settlement Prediction ◽

Burgers Model ◽

Railway Construction ◽

Clay Ground ◽

Railway Construction Project

Chengdu - Mianyang – Leshan (C-M-L for short) high speed railway in Chengdu section is located in the ground of weathered Mud rock overlying deep Chengdu clay area. Based on Chengdu clay ground of in high-speed railway construction project of CML, this article introduced the Burgers model to establish the objective function to analysis rheological constitutive model. The visco-elastic parameters of Burgers model are determined by back analysis of field monitoring data. By the method of iterative back analysis by layer of visco-elastic parameters, based on measured result, predicted the late settlement, and comparison with the follow-up observations records to verify the Burgers model.

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Design and Construction Technologies

2010 Joint Rail Conference, Volume 1 ◽

10.1115/jrc2010-36217 ◽

2010 ◽

Author(s):

Cailan Wu ◽

Weixiao Cui ◽

Chengzhi Zhang ◽

Huaijian Li ◽

Hongliang Yan

Keyword(s):

High Speed ◽

Actual Situation ◽

Technical Standard ◽

High Speed Railway ◽

Deformation Control ◽

Slab Track ◽

Railway Construction ◽

Scheme Optimization ◽

Key Technologies ◽

Design And Construction

Combining with the actual situation of China’s railway construction, this paper introduces the key technologies of design and construction of high-speed railway, such as the scheme optimization of subgrade, bridge and tunnel, technical standard, deformation control, advance geology forecast and settlement observation, etc. It also discusses the design and construction problems on the slab layout and interface of CRTS II slab track on bridge section, switch area, subgrade area and the transition with different track structures.

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