文献类型：期刊文献

英文题名：Water Pressure Variation Properties Research in Non-ballasted Track Crack Interior Under Fatigue Loading

作者：Xu Gui-Hong Zhang Wei-Biao Liao Hua-Rong Yang Rong-Shan

第一作者：徐桂弘

通信作者：Xu, GH[1]|[14440c616d6bd955f1b95]徐桂弘;[144405073741b5fdb7750]徐桂弘;

机构：[1]Guizhou Inst Technol, Guiyang 550003, Guizhou, Peoples R China;[2]China Railway 24 Bur Grp Co Ltd, Chengdu 610031, Sichuan, Peoples R China;[3]Southwest Jiaotong Univ, Sch Civil Engn, Chengdu 610031, Sichuan, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Guizhou Inst Technol, Guiyang 550003, Guizhou, Peoples R China.|贵州理工学院;

年份：2019

卷号：25

期号：4

起止页码：735-743

外文期刊名：INTELLIGENT AUTOMATION AND SOFT COMPUTING

收录：;Scopus(收录号：2-s2.0-85075535717);WOS:【SCI-EXPANDED(收录号:WOS:000496777100010)】；

基金：THIS work was supported by Natural Science Foundation of China (grants no. 51868009, 51508121 and 51778543), Natural Science Foundation of Guizhou (grants no. J [2015] 2063, and No. LH [2014] 7374) and Guizhou Institute of technology talents of high level scientific research expenses. These foundations are greatly appreciated.

语种：英文

外文关键词：Non-ballasted track; Fluid-solid interaction tests; Water pressure

摘要：This paper reports the experimental study of water pressure properties inside crack of Non-ballasted track structure. Pre-existing crack concrete specimens with 510 x 1290 x 80mm dimensions were produced, and fluid-fracture interaction tests under cyclic loading were performed. The water pressure were measured at different locations inside cracks and with different loading frequencies as well as amplitudes. By using the experimental data, then is employed to investigate the water pressure distribution inside cracks affected by both the frequency and amplitude under cyclic loading. From this study, it was determined that the water pressure of cracks alternates between positive and negative values under cyclic loading, and increase with the increase of crack depth, loads amplitude and loads frequency. Furthermore, the relationship between the water pressure, loads amplitude and loads frequency can be fitted into a polynomial expression.