Shear strength model for plastic hinge region of reinforced concrete column

被引：0

作者：

Wei W. ^{[1
]}

Shao C. ^{[1
]}

Huang H. ^{[1
]}

Li Z. ^{[2
]}

Han G. ^{[3
]}

Zhuang W. ^{[1
]}

机构：

[1] Southwest Jiaotong University, Chengdu

[2] CCCC Highway Consultants Co., Ltd., Beijing

[3] China Railway Eryuan Engineering Group Co., Ltd., Chengdu

来源：

Tumu Gongcheng Xuebao/China Civil Engineering Journal | 2023年 / 56卷 / 09期

关键词：

bridge engineering; plastic hinge region; RC hollow column; shear strength model; tension shift;

D O I：

10.15951/j.tmgcxb.22040356

中图分类号：

学科分类号：

摘要：

Since the shear formula of reinforced concrete (RC) solid column other than hollow member has been given in the current code, and the coordination relation of reinforcement deformation and tension shift during the development of the oblique crack has not been sufficiently considered, the innovative shear strength model applicable for both solid and hollow columns is urgently needed. Therefore, the force transfer mechanism on the diagonal section in the plastic hinge region of the RC column is discussed with the assumption that the deformation compatibility condition of reinforcement strain is given. And a formula of shear strength is proposed for concrete column with the non-uniform deformation of stirrup and tension shift of longitudinal rebar effect. The related parameters of the proposed formula is calibrated by the test results of 88 flexural-shear columns in the literature and PEER database. The rationality of the suggested formula is verified by the test of the other 57 columns and compared with the existing formulas. The analysis results show that the proposed model can effectively predict the shear strength of column with more accuracy and less discreteness than the existing models. Compared with the strength reduction coefficient in the code, the proposed model can be used as a seismic design formula for solid and hollow columns with higher safety allowance. © 2023 Editorial Office of China Civil Engineering Journal. All rights reserved.

引用

页码：54 / 64

页数：10

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