Application Research of Vibration and Noise Test and Analysis System in High Speed Railway Passenger Car

Ha Tai railway passenger dedicated line is a national key project of the eleventh five-year plan. Its different from other construction of high-speed railway because there is many frozen soil over the place. The requirement of the subgrade material is higher.We proposed a idea that gradred broken stone mixed with cement and fine powder applied in the project.The compressive strength,splitting tensile strength and flexural strength were studied and analyzed through laboratory test.And regression analysis between compressive strength and flexural strength was made .According to the regression analysis,a power exponent function between flexural strength and compressive strength was got.Based on this,the corresponding relationship table was deduced,which can be used in practical projects.

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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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Short-Time Fluctuation Characteristic and Combined Forecasting of High-Speed Railway Passenger Flow Based on EEMD

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.409-410.1071 ◽

2013 ◽

Vol 409-410 ◽

pp. 1071-1074

Author(s):

Xiu Shan Jiang ◽

Rui Feng Zhang ◽

Liang Pan

Keyword(s):

Support Vector Machine ◽

Empirical Mode Decomposition ◽

High Speed ◽

Ensemble Empirical Mode Decomposition ◽

Support Vector ◽

High Speed Railway ◽

Passenger Flow ◽

Mode Decomposition ◽

Railway Passenger ◽

Short Term Forecasting

Take Wuhan-Guangzhou high-speed railway for example. By adopting the empirical mode decomposition (EMD) attempt to analyze mode from the perspective of volatility of high speed railway passenger flow fluctuation signal. Constructed the ensemble empirical mode decomposition-gray support vector machine (EEMD-GSVM) short-term forecasting model which fuse the gray generation and support vector machine with the ensemble empirical mode decomposition (EEMD). Finally, by the accuracy of predicted results, explains the EEMD-GSVM model has the better adaptability.

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