Time-dependent relaxation of the connection bolts of a high-speed railway noise barrier under train wind excitation

被引：0

作者：

Wei X. ^{[1
]}

Liu M. ^{[1
]}

Wen Z. ^{[1
]}

Hu Z. ^{[2
]}

Xiao L. ^{[1
]}

机构：

[1] School of Civil Engineering, Southwest Jiaotong University, Chengdu

[2] Railway Siyuan Survey and Design Group Co., Ltd., Wuhan

来源：

Zhendong yu Chongji/Journal of Vibration and Shock | 2021年 / 40卷 / 22期

关键词：

Alternating load; Bolted connection; Noise barrier; Preload; Self-loosening;

D O I：

10.13465/j.cnki.jvs.2021.22.026

中图分类号：

学科分类号：

摘要：

The noise barrier of high-speed railway is repeatedly excited by the wind of high-speed passing trains and its bolted joints will fail due to vibration induced loosening. In order to predict the loosening degree of the bolts under cyclic transverse shear load, a three-dimensional finite element model considering the spiral effect of threads was established by ANSYS. The preload was applied by the temperature method, and the alternating transverse force was loaded. The loosening rates corresponding to different transverse force amplitude, initial preload and thread pitch were studied. The results show that the larger the amplitude of transverse force, the smaller the initial preload and the smaller the pitch of thread, the faster the loosening rate. By introducing some hypotheses, a simple method was established to predict the loosening degree of the noise barrier bolts under specific load spectrum. The results have guiding significance for noise barrier bolts maintenance. © 2021, Editorial Office of Journal of Vibration and Shock. All right reserved.

引用

页码：188 / 193

页数：5

共 21 条

[1] WANG Wei, XU Hao, MA Yue, Et al., Self-loosening mechanism of bolted joints under vibration, Journal of Vibration and Shock, 33, 22, pp. 198-202, (2014)
[2] (2015)
[3] WU Jie, LIAO Ridong, DING Xiaoyu, Research on prediction of lateral loose life of threaded connection structure and its influencing factors, Structure & Environment Engineering, 46, 2, pp. 35-41, (2019)
[4] LI Haijiang, TIAN Yu, MENG Yonggang, Et al., Experimental study of the loosening of threaded fasteners with transverse vibration, Journal of Tsinghua University (Science and Technology), 56, 2, pp. 171-175, (2016)
[5] WANG Can, DING Zhenjun, HAN Shuaishuai, Et al., Research of bolt fastening process based on accurate thread modeling, Construction Machinery and Equipment, 51, 2, pp. 31-39, (2020)
[6] LIU Jianhua, GONG Hao, DING Xiaoyu, Anti-loosening performance of wedge washers under vibration, Journal of Vibration and Shock, 38, 5, pp. 38-44, (2019)
[7] ZHAO Jianping, ZHANG Yaobin, WANG Chunyao, Experimental study on lateral vibration of transmission towers using bolt, Journal of Xinjiang University (Natural Science Edition), 35, 2, pp. 243-247, (2018)
[8] LIU J H, CAI Z B, LIU X T, Et al., Study on self-loosening of bolted joints excited by dynamic axial load, Tribology International, 115, pp. 432-451, (2017)
[9] ZHANG M Y, LU L T, WANG W J, Et al., The roles of thread wear on self-loosening behavior of bolted joints under transverse cyclic loading, Wear, 394, 395, pp. 30-39, (2018)
[10] HE Jingfei, TANG Tao, WANG Chengsheng, Finite element research on self-loosening problem of bolt connection under the alternating lateral load, Modern Manufacturing Engineering, 3, pp. 1-6, (2016)

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