MECHANICAL PROPERTIES TEST AND CYCLIC CONSTITUTIVE MODEL OF CORRODED Q345B STEEL

被引：0

作者：

Yang, Song ^{[1
]}

Zheng, Shan-Suo ^{[1
,2
]}

Tian, Zhong-Xiang ^{[1
]}

Ming, Ming ^{[1
,3
]}

Xu, Yu-Hai ^{[1
]}

Wang, Tian-Kun ^{[1
]}

机构：

[1] School of Civil Engineering, Xi’an University of Architecture & Technology, Shaanxi, Xi’an

[2] Key Lab of Structural Engineering and Earthquake Resistance, Ministry of Education(XAUAT), Ministry of Education, Shaanxi, Xi’an

[3] Northwest Electric Power Design Institute Co, Ltd. of China Power Engineering Consulting Group, Shaanxi, Xi’an

来源：

Gongcheng Lixue/Engineering Mechanics | 2025年 / 42卷 / 02期

关键词：

constitutive model; corroded steel; corrosion damage; hysteretic behaviors; mechanical properties;

D O I：

10.6052/j.issn.1000-4750.2022.11.0971

中图分类号：

学科分类号：

摘要：

The mechanical properties of steel will deteriorate after corrosion. The existing studies mainly focuses on the static tensile properties of low carbon steel. In order to study the mechanical properties of Q345B low-alloy steel after corrosion, tested are 22 groups of Q345B steel subjected to artificial accelerated corrosion, to monotonic tensile and cyclic loading. The effects of corrosion on monotonic tensile and hysteretic properties of materials were analyzed. Based on the Chaboche plastic constitutive model, the isotropic hardening and kinematic hardening parameters were calibrated and verified according to the test data. The results show that the tensile stress-strain curve of steel is obviously affected by corrosion, and all mechanical indexes show linear or nonlinear degradation with the increase of corrosion. The coupling effect of cyclic cumulative damage and corrosion will further aggravate the deterioration of steel deformation capacity, and the energy dissipation capacity and cyclic strengthening of steel will also be affected by corrosion. The hardening parameters calibrated can effectively describe the hysteretic performance of corroded Q345B steel and provide a support for the subsequent analysis of residual seismic capacity of steel members and structures in service. © 2025 Tsinghua University. All rights reserved.

引用

页码：206 / 215and252

共 17 条

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