Analysis of damage and bearing capacity of concrete pavement based on double linear softening cohesive zone model

被引：0

作者：

Zhou Z. ^{[1
,2
]}

Kang Y. ^{[1
,2
]}

Luo J. ^{[1
,2
]}

Pu Z. ^{[1
,2
]}

You Q. ^{[3
]}

机构：

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

[2] Key Laboratory of Highway Engineering of Sichuan Province, Southwest Jiaotong University, Chengdu

[3] School of Highway, Chang'an University, Xi'an

来源：

Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2020年 / 50卷 / 03期

关键词：

Bearing capacity; Concrete pavement; Damage and cracking; Double linear softening cohesive zone model; Finite element method;

D O I：

10.3969/j.issn.1001-0505.2020.03.006

中图分类号：

学科分类号：

摘要：

To study the effect of concrete plastic softening on the damage and bearing capacity of concrete pavement, the whole process of the three-point loading concrete beam test was simulated by the finite element soft ABAQUS based on the double linear softening cohesive zone model. The single and double linear softening cohesive zone models were compared, and the simulation deviations of the double linear softening cohesive zone model with different stress ratios of 0.15, 0.25 and 0.35 were calculated. The bearing capacity and the cross-section stress distribution of the concrete pavement on the Winkler foundation from loading to fracture were analyzed. The results show that using the double linear softening cohesive zone model with the stress ratio of 0.25, the simulation results of the loading force-crack opening curve are in agreement with the test ones. The ultimate bearing capacities of the beam and the concrete slab occur when the concrete at the bottom is in the damage phase and the cracking phase, respectively. The ultimate bearing capacity of the concrete slab is 1.75 times of that when the concrete at the bottom reaches its tensile strength, and 1.09 times of that when the macro-crack appears at the bottom of slab. The loading failure of the concrete slab on the Winkler foundation shows brittle fracture characteristics. © 2020, Editorial Department of Journal of Southeast University. All right reserved.

引用

页码：447 / 453

页数：6

共 25 条

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