RC框架结构多层次地震损伤演化分析方法

发布时间：2018-03-13 18:21

本文选题：多层次损伤演化分析方法　切入点：多层次损伤性能水准　出处：《工程力学》2015年09期 　论文类型：期刊论文

【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。
[Abstract]:In order to understand the nonlinear state of the structure from material to whole structure in the process of failure under earthquake, based on the element coupling technology, the multi-level damage performance level, the multi-level seismic damage model, A multi-level seismic damage evolution analysis method for RC frame structures is presented. The element coupling technique based on the energy balance principle at the coupled interface can accurately calculate the mechanical properties of the whole structure and the details of the local failure at the same time. According to the failure characteristics of different levels of material, section, member, floor and structure, the multilevel damage performance level, which is used as the criterion of damage performance evaluation, is put forward. Based on the equivalent principle of deformation and generalized force-deformation curve, a multi-level seismic damage model is established, which has a consistent mechanical significance at all levels. The test of a prototype RC frame structure is taken as an analysis object. The method of multi-level seismic damage evolution analysis of structures is described in detail.
【作者单位】：南京工业大学土木工程学院;同济大学土木工程防灾国家重点实验室;
【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)
【分类号】：TU375.4;TU352.11

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