【摘要】 针对目前震后钢筋混凝土框架结构的损伤程度多以定性评定为主的现状,本文提出借助Pushover分析方法,并结合现有的国内外规范,通过考虑结构的层间位移、塑性铰发展、频率降低等指标的变化,对结构在地震作用下可能出现的五种破坏状态"基本完好、轻微损坏、中等破坏、严重破坏、倒塌"进行定量划分。以某8层振动台模型试验的框架结构作为工程实例进行Pushover分析,计算结构在8度基本地震作用下的反应,将分析结果与本文提出的震损定量评估综合指标相对比,得出该建筑物在不同地震作用下的破坏等级。结果表明,本文的分析结果与试验震害现象基本一致。更多还原

【Abstract】 Considering most damage assessment is qualitative for post-earthquake reinforced concrete frame structures.In this paper,by considering displacement between layers,number and percentage of hinges,reduction of frequency with the Nonlinear Static Analysis method combined with the existing norms,the range between the five levels of structures’ earthquake damage state:"basically intact,minor damage,moderate damage,severe damage,collapse" is quantitative divided.Through the Pushover analysis of a frame structure damaged,the response of the structure in 8 basic degree are gotten.The results of Pushover Analysis are compared with the comprehensive standards to acquire the damage state.A conclusion can be obtained that the results analyzed by the method introduced in this paper is in accordance with the actual seismic damage state.更多还原