Irregular GIS Curve Fitting based High Speed Railway Earthquake Influence Range Calculation Model

Nowadays, railway tunnel construction faces huge developments and opportunities, with a tendency for high speed and long distance. How to effectively apply the information in the construction process has been the focus of current research. According to the Xian-nvyan tunnel in Xicheng high-speed railway, our research was based on the geological forecast, selecting appropriate tunneling model parameters to establish the 3D calculation model. Through the numerical simulation of three tunnel excavation and support methods, we analyzed the displacement of surrounding rock and the plastic failure to select the construction method reasonably. Compared with the actual measured data, we judged the rationality of the selected scheme and model parameters, so as to provide design parameters which conform to the surrounding rock properties for the subsequent construction, thus optimizing the construction program and applying the concept of information-based construction in engineering actually.

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Study on Comparison of Predicting Method on Settlement and Deformation of Unballasted Track in the Button of Tunnel on High Speed Railway

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.513-517.2647 ◽

2014 ◽

Vol 513-517 ◽

pp. 2647-2650

Author(s):

Tong Bing Lei ◽

Shu Dan Xiong ◽

Ling Fa Jiang ◽

Zhang Jun Dai

Keyword(s):

Curve Fitting ◽

High Speed ◽

Point Method ◽

High Speed Railway ◽

Small Fluctuation ◽

Fitting Method ◽

Curve Fitting Method ◽

Final Settlement ◽

Hyperbolic Method

Curve fitting method is one of the methods that predict and make analysis to the settlement and deformation of unballasted track tunnel project. Based on the measured date of the button of a certain unballasted track tunnels settlement, hyperbolic method and three-point method and Asaoka method were used to predict the settlement and deformation, according to the predicted result, we can get the best predicted method in this paper. The result shows that, on the premise of predictable, to a small accumulated settlement value and a small fluctuation state, the fitting result is close to each other with the prediction of three-point method and Asaoka method, while the result of hyperbolic method made it be the best choice here, as for the greater predicted post-construction settlement value and final settlement value, this method was regarded as a safe and reasonable method, which was regarded as the best one in the above three methods.

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Integrating capacity analysis with high-speed railway timetabling: A minimum cycle time calculation model with flexible overtaking constraints and intelligent enumeration

Transportation Research Part C Emerging Technologies ◽

10.1016/j.trc.2016.05.005 ◽

2016 ◽

Vol 68 ◽

pp. 509-531 ◽

Cited By ~ 18

Author(s):

Xin Zhang ◽

Lei Nie

Keyword(s):

Cycle Time ◽

High Speed ◽

Calculation Model ◽

Capacity Analysis ◽

High Speed Railway ◽

Time Calculation ◽

Railway Timetabling

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Vibration Test of Hangzhou East Railway Station under Pedestrian Load

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.578-579.1247 ◽

2014 ◽

Vol 578-579 ◽

pp. 1247-1250

Author(s):

Yan Li Yu ◽

Wei He ◽

Wei Ping Xie

Keyword(s):

High Speed ◽

Calculation Model ◽

Test Results ◽

Key Factors ◽

Waiting Room ◽

Railway Station ◽

High Speed Railway ◽

Load Model ◽

Vibration Responses ◽

Station Structure

Much concern has been paid on the human-induced vibration of high-speed railway station structures in recent years. But the vibration responses are influenced greatly by are two key factors, which are rational pedestrian load model and accurate structure calculation model. Field test, therefore, is the most directly and valuable method to obtain the vibration responses of large-span railway station structure. The vibration responses of the waiting floor of the Hangzhou East Railway Station, which is just completed, are measured and analyzed. The test results showed that the vibration of waiting room floor under pedestrian load cannot be neglected for vibration comfort evaluation.

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