Hysteretic Model for Corroded Rectangular Reinforced Concrete Bridge Column Under Seismic Loading

被引：0

作者：

Yang S. ^{[1
]}

Song X. ^{[2
]}

Jia H. ^{[3
]}

Chen X. ^{[4
]}

Liu X. ^{[2
]}

机构：

[1] School of Civil Engineering and Water Conservancy, Ningxia University, Yinchuan

[2] Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai

[3] Engineering Research Institute, China Construction Eighth Engineering Division Co., Ltd., Shanghai

[4] Shanghai Research Institute of Building Sciences, Shanghai

来源：

Journal of Shanghai Jiaotong University (Science) | 2021年 / 26卷 / 06期

基金：

中国国家自然科学基金;

关键词：

A; corrosion; ductility factor; envelope curve; hysteretic model; rebar; reinforced concrete (RC) column; seismic loading; TU; 375.3;

D O I：

10.1007/s12204-021-2282-8

中图分类号：

学科分类号：

摘要：

Additional hysteretic experiments for corroded rectangular reinforced concrete (RC) columns with an axial load ratio of 0.27 were implemented. A quasi-static cyclic lateral loading with constant axial force was subjected to tests. Herein, a modified ductility factor model for corroded RC column is developed on the basis of the previous work and additional experiments. The model involves the influence of both the corrosion ratio of longitudinal rebar and the axial load ratio. A four-linear envelope curve model concerning lateral load and displacement is proposed in a combination of determination rules of the peak point and the failure strength point. The hysteretic model of corroded RC columns is developed by considering both degraded unloading stiffness and reloading stiffness on the history peak point. The hysteretic model can predict the residual life of corroded RC columns under seismic loading. © 2021, Shanghai Jiao Tong University and Springer-Verlag GmbH Germany, part of Springer Nature.

引用

页码：794 / 803

页数：9

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