钢筋混凝土框架结构地震倒塌易损性分析

ANALYSIS OF SEISMIC COLLAPSE VULNERABILITY OF RC FRAME STRUCTURES

地震作用下建筑结构的抗倒塌能力是基于性能抗震设计的核心目标。为研究不同高度的RC框架结构抗倒塌能力,提出了基于结构抗倒塌储备系数(CMR)的钢筋混凝土框架倒塌易损性的研究方法。按照我国现行规范设计了几个多层钢筋混凝土框架结构,采用IDA的计算方法,得出不同高度RC框架结构相应的倒塌易损性曲线和归一化的倒塌易损性曲线。根据计算结果评价结构的抗倒塌能力和安全储备。

The collapse resistance of building structures under earthquake action is the core goal of performance-based seismic design.In order to study the collapse resistance of RC frame structures of different heights,a research method based on the structural collapse resistance reserve coefficient(CMR)for the vulnerability of reinforced concrete frames to collapse was proposed.Several multi-layer reinforced concrete frame section structures were designed according to the current specifications in China,and the IDA calculation method is used to obtain the corresponding collapse vulnerabili⁃ty curves and normalized collapse vulnerability curves for RC frame structures of different heights.Evaluate,the collapse resistance and safety reserve of the structure based on the calculation results.