Variable angle truss model for bearing capacity analysis of corroded reinforced concrete beams

被引：0

作者：

Luo D. ^{[1
,2
]}

Yang C. ^{[3
]}

Xing G. ^{[3
]}

Niu D. ^{[1
,2
]}

机构：

[1] State Key Laboratory of Green Building in Western China, Xi'an University of Architecture and Technology, Xi'an

[2] School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an

[3] School of Civil Engineering, Chang'an University, Xi'an

来源：

Jianzhu Jiegou Xuebao/Journal of Building Structures | 2019年 / 40卷 / 01期

关键词：

Bearing capacity; Corroded reinforced concrete beam; Standard truss model; Strut-and-tie model; Variable angle truss model;

D O I：

10.14006/j.jzjgxb.2019.01.011

中图分类号：

学科分类号：

摘要：

In order to study the bearing capacity of corroded reinforced concrete beams under corrosive environment and long-term loads, the corroded reinforced concrete beams under sustained loads was taken as the research object, and the effects of steel corrosion on bond strength and failure mode were analyzed. Based on the strut-and-tie model and the standard truss model, the loading capacity of corroded reinforced concrete beams was calculated, and the bearing capacity of concrete beams was then calculated by using the modified variable angle truss model considering the effect of steel corrosion. The proposed model was validated by the test data of 49 corroded concrete beams. The results show that, for the bearing capacity of the reinforced concrete beams, the calculated values are in good agreement with the test values, and the mean value and the variance of the ratio between the two are 0.990 and 0.071, respectively. The variable angle truss model can accurately calculate the bearing capacity of corroded reinforced concrete beams and predict their failure modes. The proposed model can be used to analyze the bearing capacity of corroded reinforced concrete beams. © 2019, Editorial Office of Journal of Building Structures. All right reserved.

引用

页码：97 / 104

页数：7

共 30 条

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