部分锈蚀钢筋混凝土结构动力特性的数值分析  

Numerical analysis of dynamic characteristics of partly corroded reinforced concrete structures

作　　者：曾力[1] 郭院成[1] 张彬[2] 

机构地区：[1]郑州大学土木工程学院,河南郑州450001 [2]黄河水利科学研究院,河南郑州450003

出　　处：《世界地震工程》2009年第1期12-15,共4页World Earthquake Engineering

摘　　要：钢筋的锈蚀将使其有效截面面积减小,并导致钢筋与混凝土间的粘结性能退化,进而对结构的动力特性产生一定影响。采用有限元分析方法,对钢筋发生锈蚀后的钢筋混凝土框架结构的动力性能进行了数值模拟,探讨了钢筋混凝土框架结构在不同位置发生钢筋锈蚀损伤时结构固有频率的变化情况。结果表明:结构的固有频率不仅与钢筋锈蚀程度有关,还与锈损位置密切相关。The corrosion of structural steel will enable the degradation on performance of reinforced concrete structures, which also has a certain impact on the dynamic characteristics of the structures. The natural frequencies of corroded reinforced concrete frame structures are simulated by finite element method, and the changes of the natural frequencies of the reinforced concrete structure in different states of corrosion damage are discussed. Results from above find that the changes of the natural frequencies of the reinforced concrete structures are not only related to the corrosion degree of reinforced steel but also to the location of corrosion.

关 键 词：锈蚀钢筋混凝土结构 数值模拟 固有频率 粘结性能 

分 类 号：TU37[建筑科学—结构工程] P315.96[天文地球—地震学]