摘要
通过对锈蚀钢筋混凝土梁的试验 ,研究了结构性能退化机理。根据退化机理分析 ,锈蚀钢筋的力学性能退化以及锈蚀钢筋与混凝土粘结性能退化是导致钢筋混凝土锈蚀梁的结构性能退化的主要因素。通过锈蚀钢筋力学性能及其与混凝土的粘结性能的试验研究 ,建立了锈蚀钢筋的应力 -应变关系和锈蚀钢筋与混凝土的粘结应力 -滑移关系的退化模型。在基本力学性能研究基础上 ,建立锈蚀梁有限元模型 。
A test of three pieces of corroded reinforced concrete beams is conducted. An attempt is made to study the mechanism of the structural behavior deterioration .The results show that the mechanical and the bond deterioration of a corroded steel bar are two major factors.The stress?strain relationship of the corroded steel bar and the bond stress?slip between the concrete and the corroded steel bar are established. A finite element analysis for the corroded reinforced concrete beam is performed by using the proposed model The analytic results are more agreed with that of the tests.aretwomajorfactors.Thestres
出处
《土木工程学报》
EI
CSCD
北大核心
2001年第3期47-52,96,共7页
China Civil Engineering Journal
基金
国家自然科学基金资助项目 (编号 :597780 54)
关键词
钢筋混凝土
梁
锈蚀
退化模型
有限元分析
steel bar, corrosion, concrete,deterioration model, finite element analysis
