›› 2013, Vol. 34 ›› Issue (4): 1045-1052.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental study of dynamic load magnification factor for type I track-subgrade system

CHEN Ren-peng1, 2, WANG Zuo-zhou3, JIANG Hong-guang1, 2, BIAN Xue-cheng1, 2   

  1. 1. Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China; 2. MOE key laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, China; 3. Zhejiang Electric Power Design Institute, Hangzhou 310012, China
  • Received:2012-02-08 Online:2013-04-10 Published:2013-04-16

PDF (Chinese)

2081

Abstract: There are lots of factors that affect the dynamic load induced by high-speed train; the train speed is one of the most critical factors. It is rather difficult to determine the effect of train speed on dynamic load using theoretical method due to the complexity of vehicle-track-subgrade interaction. Large-scale physical model test has gradually become one of the most popular approaches for studying the dynamic characteristics of ballastless track structure of high-speed railway. A full-scale model of ballastless track subgrade was constructed based on the design and construction standard for high-speed railway line from Shanghai to Nanjing. The dynamic strain of type I slab and dynamic soil pressure of subgrade were obtained by conducting single wheel axel exciting test. The relationship between dynamic load and train speed was presented. The dynamic load magnification factors of slab and subgrade structure under different train speeds are obtained respectively. The magnification factors are of great significance for designing the dynamic load in type I track-subgrade system.

Key words: high-speed railway, train speed, dynamic load, slab

CLC Number: 

  • U 292.52
[1] LI Qiao, MENG Fan-zeng, NIU Yuan-zhi. Bridge pier deformation and control technology of jacking framed bridge with loading under crossing high speed railway [J]. Rock and Soil Mechanics, 2019, 40(9): 3618-3624.
[2] RUI Rui, SUN Yi, ZHU Yong, WU Duan-zheng, XIA Yuan-you, . Mesoscopic working mechanism of cushion of composite foundation under rigid slab [J]. Rock and Soil Mechanics, 2019, 40(2): 445-454.
[3] WANG Jia-quan, ZHANG Liang-liang, LAI Yi, LU Meng-liang, YE Bin, . Large-scale model tests on static and dynamic mechanical characteristics of reinforced earth retaining wall [J]. Rock and Soil Mechanics, 2019, 40(2): 497-505.
[4] SONG Hong-fang, YUE Zu-run, LI Bai-lin, ZHANG Song, . Thermal insulation and strengthening properties of anti-frost heaving subgrade structure of the high-speed railway in seasonally frozen soil region [J]. Rock and Soil Mechanics, 2019, 40(10): 4041-4048.
[5] LI Han-wen, ZHANG Lu-lu, FENG Shi-jin, ZHENG Wen-Tang,. Moisture migration in a high-speed railway embankment under complex atmospheric environment [J]. , 2018, 39(7): 2574-2582.
[6] NIU Ting-ting, LIU Han-long, DING Xuan-ming, CHEN Yun-min，. Piled embankment model test on vibration characteristics under high-speed train loads [J]. , 2018, 39(3): 872-880.
[7] ZHOU Yu, SUN Zheng, WANG Li, WANG Yu, DING Yin-ping, . Meso research on mechanical properties and slab failure mechanism of pre-fractured rock mass under the condition of one side restriction loading [J]. Rock and Soil Mechanics, 2018, 39(12): 4385-4394.
[8] WANG Jia-quan, ZHANG Liang-liang, LIU Zheng-quan, ZHOU Yuan-wu. Large model test on geogrid reinforced sand soil foundation under dynamic loading [J]. , 2018, 39(10): 3539-3547.
[9] XIE Tao, LUO Qiang, ZHOU Cheng, ZHANG Liang, JIANG Liang-wei, . Mechanical response of shoulder sheet-pile wall under strictly restricted deformation condition in steep ground along a high-speed railway [J]. , 2018, 39(1): 45-52.
[10] HE Ming-ming, LI Ning, CHEN Yun-sheng, ZHU Cai-hui. Damping ratio and damping coefficient of rock under different cyclic loading conditions [J]. , 2017, 38(9): 2531-2538.
[11] KONG Gang-qiang, SUN Guang-chao, LIU Han-long, GU Hong-wei, . Experimental study of XCC pile-raft composite foundation under different excitation frequencies [J]. , 2017, 38(5): 1379-1384.
[12] YUAN Zong-hao, CAI Yuan-qiang, YUAN Wan, XU Yuan-lei, CAO Zhi-gang, . Dynamic response of circular railway tunnel and track system in saturated soil under moving train loading [J]. , 2017, 38(4): 1003-1014.
[13] ZHOU Zheng-long, CHEN Guo-xing, WU Qi. Analysis of capabilities of stress paths of HCA to simulate principal stress rotation under four-direction dynamic loads [J]. , 2016, 37(S1): 126-132.
[14] QIU Ming-ming , YANG Xiao , YANG Guo-lin , FANG Yi-he,. Dynamic response of the new fully-enclosed cutting subgrade of Yun-Gui high-speed railway [J]. , 2016, 37(2): 537-544.
[15] ZHANG Lu-chen, LI Yu-hui, LI Shu-chen, MA Teng-fei, XIE Can. Stability analysis of surrounding rock mass of tunnel under dynamic load and its engineering application [J]. , 2016, 37(11): 3275-3282.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] XIANG Tian-bing, FENG Xia-ting, CHEN Bing-rui, JIANG Quan, ZHANG Chuan-qing. Rock failure mechanism and true triaxial experimental study of specimens with single structural plane under three-dimensional stress[J]. , 2009, 30(10): 2908 -2916 .
[2] ZHANG Yi-hu, ZHOU Huo-ming, WU Ai-qing. Post processing of discontinuity network modeling result[J]. , 2009, 30(9): 2855 -2861 .
[3] YANG Guang, SUN Xun, YU Yu-zhen, ZHANG Bing-yin. Experimental study of mechanical behavior of a coarse-grained material under various stress paths[J]. , 2010, 31(4): 1118 -1122 .
[4] WEN Shi-qiang, CHEN Yu-min, DING Xuan-ming, ZUO Wei-long. Application of grouted gravel pile in soft subgrade improvement of expressway[J]. , 2010, 31(5): 1559 -1563 .
[5] ZHANG Chang-guang，ZHANG Qing-he，ZHAO Jun-hai. Unified solutions of shear strength and earth pressure for unsaturated soils[J]. , 2010, 31(6): 1871 -1876 .
[6] YANG Tian-hong, CHEN Shi-kuo, ZHU Wan-cheng, LIU Hong-lei. Coupled model of gas-solid in coal seams based on dynamic process of pressure relief and gas drainage[J]. , 2010, 31(7): 2247 -2252 .
[7] HU Xiu-hong，WU Fa-quan. Research on two-parameter negative exponential distribution of discontinuity spacings in rock mass[J]. , 2009, 30(8): 2353 -2358 .
[8] LI Wei-chao, XIONG Ju-hua, YANG Min. Improved method for calculating anti-overturning safety factor of cement-soil retaining wall in layered soil[J]. , 2011, 32(8): 2435 -2440 .
[9] ZHANG Gui-min , LI Yin-ping , SHI Xi-lin , YANG Chun-he , WANG Li-juan. Research on a model material preparation method for alternate layered rock mass and preliminary experiment[J]. , 2011, 32(S2): 284 -289 .
[10] WANG Wei LI Xiao-chun LI Qiang SHI Lu WANG Ying BAI Bing. Small size in-situ transient pulse permeability measurement system and its experimental research[J]. , 2011, 32(10): 3185 -3189 .
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd