锈蚀环境下损伤混凝土结构抗震数值模拟  

Seismic Numerical Simulation of Damaged Concrete Structures in Corrosive Environment

作　　者：冷玲倻[1] 梁文文[1] 黄志勇 LENG Ling-ye;LIANG Wen-wen;HUANG Zhi-yong(College of Urban Construction,Jiangxi University of Technology,Nanchang Jiangxi 330098,China;College of Civil Engineering and Architecture,Guangxi University,Nanning Guangxi 530004,China)

机构地区：[1]江西科技学院城市建设学院,江西南昌330098 [2]广西大学土木建筑工程学院,广西南宁530004

出　　处：《计算机仿真》2022年第11期304-308,共5页Computer Simulation

基　　金：江西省教育厅科学技术研究项目(GJJ202020)。

摘　　要：受锈蚀环境影响,混凝土结构抗震性能会逐渐变差,为了提高混凝土结构的整体抗震性能,提高建筑结构安全性,提出锈蚀损伤混凝土结构抗震性能数值模拟方法。构建本构模型,运用模型分析锈蚀损伤混凝土的受压屈曲性、混凝土保护层以及黏结滑移特性,根据分析结果采用ANSYS软件构建锈蚀损伤混凝土的有限元模型,利用有限元模型对锈蚀损伤混凝土结构的抗震性能进行分析。经分析可知,承载力的下降幅度与锈蚀率之间成正比关系,随着锈蚀率的增加,混凝土结构的抗震性能逐渐变差;受锈蚀柱子的刚度衰减速度随着锈蚀程度的增加不断加快,不同锈蚀率下柱子刚度退化呈现非线性。In order to improve the seismic capacity of concrete structures and the safety of building structures,this paper proposed a numerical simulation for the seismic capacity of the concrete structure with corrosion damage.First of all,a constitutive model was constructed to analyze the buckling performance,concrete cover and bond-slip characteristics of the damaged concrete.According to the analysis results,ANSYS software was used to construct a finite element model to analyze the seismic capacity of damaged concrete structures.It is understandable after analysis that the decrease of carrying capacity is proportional to the corrosion rate.With the increase of the corrosion rate,the seismic capacity of concrete structures gradually deteriorates.The rate of stiffness degradation of corroded columns increases with the increase of corrosion degree.In addition,the stiffness degradation of columns is nonlinear under different corrosion rates.

关 键 词：锈蚀损伤 混凝土结构 本构模型 数值模拟 

分 类 号：TU375[建筑科学—结构工程]