摘要
为掌握地震作用下结构在破坏过程中由材料至整体结构不同层次的非线性状态,基于单元耦合技术、多层次损伤性能水准、多层次地震损伤模型,提出了RC框架结构多层次地震损伤演化分析方法。根据耦合界面上能量平衡原理建立的单元耦合技术,能够同时准确计算结构整体力学性能和局部破坏细节,可用以结构多层次损伤数值模拟。按照"材料、截面、构件、楼层、结构"不同层次的破坏特征,提出了作为损伤性能评价标准的多层次损伤性能水准,且统一定义为五个水准。基于变形等价原理和广义力-变形曲线,建立了多层次地震损伤模型,其在各层次上具有一致的力学意义。以某原型RC框架结构试验为分析对象,详细阐述了结构多层次地震损伤演化分析方法。
Based on the element coupling technique, multi-level damage performance definition and multi-level seismic damage model, the multi-level seismic damage evolution analysis method for the RC frame structure was presented in this paper. This method aimed to analyze the nonlinear behavior in both material level and structural level during the damage accumulation process under seismic actions. According to the energy-conservation theory applicable to the coupled section, the element coupling technique was established which reflects the structural mechanical properties and the damage details. In accordance with the damage characteristics of different levels, the multi-level damage performance system was presented as the damage evaluation criterion. Moreover, the multi-level seismic damage model was built up according to the presented equivalent deformation principle and the relationship between generalized force and deformation. Finally, the multi-level damage evolution analysis method was illustrated through the test of one real RC frame structure.
出处
《工程力学》
EI
CSCD
北大核心
2015年第9期126-134,共9页
Engineering Mechanics
基金
国家自然科学青年基金项目(51308286)
江苏省自然科学青年基金项目(BK20130944)
关键词
多层次损伤演化分析方法
多层次损伤性能水准
多层次地震损伤模型
单元耦合方法
原型RC框架结构
multi-level seismic damage evolution analysis method
multi-level damage performance
multi-level seismic damage model
element coupling method
real RC frame structure
