Application of Concrete Damaged Plasticity Model to Nonlinear Analysis of Ballastless Track

被引：0

作者：

Cai X. ^{[1
]}

Zhong Y. ^{[1
]}

Ruan Q. ^{[1
]}

Ren X. ^{[1
]}

Gao L. ^{[1
]}

Shen Y. ^{[1
]}

机构：

[1] School of Civil Engineering, Beijing Jiaotong University, Beijing

来源：

Tiedao Xuebao/Journal of the China Railway Society | 2019年 / 41卷 / 05期

关键词：

Ballastless track; Plastic damage; Strength test; Temperature effect; Train load;

D O I：

10.3969/j.issn.1001-8360.2019.05.013

中图分类号：

学科分类号：

摘要：

In order to meet the requirements for the analysis of ballastless track non-linear damage and long-term service performance, based on the damage plastic constitutive theory of concrete and the results of splitting tensile test of CA mortar, a finite element analysis model considering the non-linear damage of ballastless track components was established. The calculation results of the plastic damage model and the linear elastic model under the action of temperature and train load were analyzed and compared. The results show that the nonlinear plastic damage model is basically consistent with the linear elastic model when the stress and deformation of the ballastless track structure are minor. When the temperature of ballastless track rises over 30℃, and the positive temperature gradient exceeds 60 °C/m or the train load is more than 225 kN, the calculation results of the two models begin to differ and the difference expands with the increase of the load. The plastic damage model with reinforcement in this paper is consistent with the actual structure and material properties in the field. It can be used as a reference for the non-linear analysis of ballastless track, cumulative effect analysis of plastic deformation and damage, and the study of long-term service performance of ballastless track. © 2019, Department of Journal of the China Railway Society. All right reserved.

引用

页码：109 / 118

页数：9

共 12 条

[1] Yang R., Liu K., Ren J., Et al., Research on Effect of Cement Asphalt Mortar Damages on Dynamic Characteristics of Wheel-rail System, Journal of the China Railway Society, 36, 7, pp. 79-84, (2014)
[2] Liu F., Zeng Z., Wu B., Research on the CRTSⅡ Slab Ballastless Track Buckling Deformation in the Process of Construction, Joural of Railway Engineering Society, 32, 1, pp. 55-60, (2015)
[3] Lin H., Li P., Yan H., Et al., Mechanical Analysis of Ballastless Track with Damaged Cracks under Train Load, Joural of Southwest Jiaotong University, 45, 6, pp. 904-908, (2010)
[4] Wang M., Cai C., Zhu S., Et al., Experimental Investigation on Adhesive Performance of Concrete Interface of Double-block Ballastless Track Based on Cohesive Zone Model, Journal of the China Railway Society, 38, 11, pp. 88-94, (2016)
[5] Xu Q., Lin Q., Fang Z., Et al., Fatigue Characteristics of Longitudinally Connected Slab Ballastless Track on Bridge under Combined Load, China Railway Science, 38, 6, pp. 37-46, (2017)
[6] Edalat-Behbahani A., Barros J.A.O., Ventura-Gouveia A., Application of Plastic-damage Multidirectional Fixed Smeared Crack Model in Analysis of RC Structures, Engineering Structures, 125, pp. 374-391, (2016)
[7] Kueres D., Stark A., Herbrand M., Et al., Finite Element Simulation of Concrete with a Plastic Damage Model-basic Studies on Normal Strength Concrete and UHPC, Bauingenieur, 90, 6, pp. 252-264, (2015)
[8] Jefferson A.D., Mihai I.C., Tenchev R., Et al., A Plastic-damage-contact Constitutive Model for Concrete with Smoothed Evolution Functions, Computers & Structures, 169, pp. 40-56, (2016)
[9] Zhou Y., Xiang J., Yu C., Et al., Inversion Analysis of Damage of Ballastless Track in High-speed Railway under Temperature Loads, Journal of Railway Science and Engineering, 13, 1, pp. 1-8, (2016)
[10] Zhu S., Cai C., Research on the Damage Characteristics of Double-block Ballastless Track Bed Slab under Temperature and Vehicle Dynamic Loads, China Railway Science, 33, 1, pp. 6-12, (2012)

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