湖南大学学报（自然科学版）2024，Vol.51Issue(3)：111-120,10.DOI:10.16339/j.cnki.hdxbzkb.2024033
锈蚀钢材力学性能试验及等效本构模型研究
Study on Mechanical Property Test and Equivalent Constitutive Model of Corroded Steel
摘要
Abstract
To accurately describe the constitutive relationship of the corroded steel under cyclic loading,the mechanical properties and degradation rules of the corroded steel were obtained through the monostatic tensile and cyclic loading tests on 16 groups of corroded Q355 steel specimens subjected to artificially accelerated corrosion.The influence of corrosion on the hysteretic properties of steel specimens was analyzed,and a cyclic constitutive model of corroded steel was established based on Giuffre-Menegotto-Pinto(GMP)model.The results show that the yield strength,ultimate strength and corresponding yield strain,ultimate strain and other mechanical properties of steel show a linear degradation trend with the increase of corrosion degree;corrosion weakens the energy consumption capacity of steel,making it difficult to ensure the safety of the structure under reciprocating loads;the cyclic constitutive model of corroded steel is in good agreement with the test results,which can provide support for the seismic performance evaluation of steel members and structures in corrosive environments.关键词
钢结构/锈蚀/力学性能/本构关系Key words
steel structure/tarnishing/mechanical property/constitutive relation分类
建筑与水利引用本文复制引用
郑山锁,田忠祥,杨松,穆长俊,明铭..锈蚀钢材力学性能试验及等效本构模型研究[J].湖南大学学报（自然科学版）,2024,51(3):111-120,10.基金项目
国家重点研发计划资助项目(2019YFC1509302),National Key R&D Program(2019YFC1509302) （2019YFC1509302）
国家自然科学基金资助项目(52278530),National Natural Science Foundation of China(52278530) （52278530）
陕西省重点研发计划资助项目(2021ZDLSF06-10),Key R&D Projects in Shaanxi Province(2021ZDLSF06-10) （2021ZDLSF06-10）
