Damage criterion of reinforced concrete pier based on plastic strain energy density

被引：0

作者：

Zhao J.-G. ^{[1
]}

Zhang M. ^{[2
]}

Zhan Y.-L. ^{[2
,3
]}

Xie M.-Z. ^{[2
]}

机构：

[1] College of Civil Engineering, Guizhou University, Guiyang

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

[3] National Engineering Laboratory for Technology of Geological Disaster Prevention in Land Transportation, Southwast Jiaotong University, Chengdu

来源：

Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2019年 / 49卷 / 04期

关键词：

Bridge engineering; Damage index; Dynamic failure criterion; Normalized parameter; Plastic strain energy density; Support vector machine algorithm;

D O I：

10.13229/j.cnki.jdxbgxb20171242

中图分类号：

学科分类号：

摘要：

A damage model for accurate evaluation of the cross section damage of reinforced concrete pier under dynamic load is established. First, the damage criterion of plastic strain energy density is deduced. Then, the performance level of reinforced concrete pier is established based on the condition of crack propagation. The correspondence relationship between damage index and performance level is determined through analyzing the dynamic damage of 33 quasi-static test model of reinforced concrete pier by the software of ABAQUS, and the evaluation model of the cross section damage of reinforced concrete pier under dynamic load is quantified. Finally, the Support Vector Machine algorithm is used to predict the normalized parameters of the plastic strain energy density damage criterion. The accuracy and applicability of the plastic strain energy density damage criterion and the Support Vector Machine algorithm which were used to analyze the cross section damage of the reinforced concrete pier are verified by numerical examples. © 2019, Jilin University Press. All right reserved.

引用

页码：1124 / 1133

页数：9

共 18 条

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