Warping Features of Ballastless Track-Slab Under Debonding-Repaired Condition

被引：0

作者：

Xu Y. ^{[1
,2
]}

Miao W. ^{[1
,2
]}

Yan D. ^{[1
,2
]}

Zhu W. ^{[1
,2
]}

Xu W. ^{[4
]}

机构：

[1] Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai

[2] Shanghai Key Laboratory of Rail Infrastructure Durability and System Safety, Tongji University, Shanghai

[3] Shanghai Tunnel Engineering and Rail Transit Design and Research Institute, Shanghai

[4] China Railway Shanghai Group Co., Ltd., Shanghai

来源：

Tongji Daxue Xuebao/Journal of Tongji University | 2021年 / 49卷 / 03期

关键词：

Ballastless track; Debonding repairment; Temperature load; Track-slab; Warping;

D O I：

10.11908/j.issn.0253-374x.20309

中图分类号：

学科分类号：

摘要：

Based on the construction technology of the debonding repairment applied to the high speed railway ballastless track, the interlayer interfaces were simulated by adapting cohesive element based on the bilinear cohesive zone model, and a finite element model of II slab track of China railway track system (CRTS) was established with full consideration of multi-interface bonding properties. The warping features of the ballastless track-slab were calculated and analyzed at the temperature gradient loads from -50℃•m-1 to +100℃•m-1 and the temperature change loads from -30℃ to 30℃, respectively. The results show that within the range of the temperature loads in this paper, under the debonding-repaired condition, the warping modes and the warping extremes of the track-slab are consistent with the normal state, which indicates that the debonding repairment has restored the warping of the track-slab. © 2021, Editorial Department of Journal of Tongji University. All right reserved.

引用

页码：400 / 410

页数：10

共 16 条

[1] LIAN Songliang, Track engineering, (2009)
[2] ZHONG Yanglong, GAO Liang, WANG Pu, Et al., Mechanism of interfacial shear failure between CRTS II slab and CA mortar under temperature loading, Engineering Mechanics, 35, 2, (2018)
[3] YI Zhonglai, LI Huajian, WEN Hao, Et al., Study on remedy technology of open joint of filling layer for CRTS II slab-type ballastless track, Railway Engineering, 1, (2015)
[4] SONG L, LIU H, CUI C, Et al., Thermal deformation and interfacial separation of a CRTS II slab ballastless track multilayer structure used in high-speed railways based on meteorological data, Construction and Building Materials, 237, (2020)
[5] LIU Yu, ZHAO Guotang, Analysis of early gap of between layers of CRTS II slab ballastless track structure, China Railway Science, 34, 4, (2013)
[6] CHEN Long, CHEN Jinjie, WANG Jianxi, Study on stress transfer and interface damage of CRTS II slab ballastless track, Journal of the China Railway Society, 40, 8, (2018)
[7] ZHONG Yao, HE Yuelei, LU Hongyao, Et al., Analysis of interface seam of CRTS II slab track under sustained high temperature, Journal of Railway Science and Engineering, 15, 5, (2018)
[8] ZHAO Guotang, LIU Yu, Mechanism analysis of delamination of CRTS II slab ballastless track structure, Journal of the China Railway Society, 42, 7, (2020)
[9] ZHU S, WANG M, ZHAI W, Et al., Mechanical property and damage evolution of concrete interface of ballastless track in high-speed railway: Experiment and simulation, Construction and Building Materials, 187, (2018)
[10] ZHANG Y, WU K, GAO L, Et al., Study on the interlayer debonding and its effects on the mechanical properties of CRTS II slab track based on viscoelastic theory, Construction and Building Materials, 224, (2019)

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