混凝土高层建筑结构地震破坏抗毁能力评估

Evaluation of Earthquake Damage and Anti-destruction Ability of Concrete High-rise Building Structures

提出基于构件性能的混凝土高层建筑结构地震破坏抗毁能力评估方法,采用强度与延性法分析混凝土高层建筑构件强度和变形,以对强震作用下混凝土高层建筑结构性能实施准确描述。基于建筑结构性能以及多条地震波情况下高层建筑结构倒塌极限状态的分析规范,采用IDA方法设置建筑结构抗倒塌能力系数,并依据该系数获取基于构件性能的混凝土高层建筑结构地震破坏抗毁能力评估流程,实现建筑结构地震破坏抗毁能力的准确评估。实验结果说明,所提方法实现了混凝土高层建筑结构地震破坏抗毁能力的准确评估。

In previous studies,evaluations of earthquake damage and anti-destruction ability of concrete high-rise buildings based on the static nonlinear evaluation method and structural dam-age assessment model do not consider the damage development of structures under an earth-quake;thus,the evaluation results often differ from reality.Therefore,this paper proposes an evaluation method of earthquake damage and anti-destruction ability of concrete high-rise build-ings based on component performance.By using the strength and ductility methods the perform-ance of concrete high-rise buildings under strong earthquakes can be exactly described based on the strength and deformation of the building.Based on the structure performance and the analysis of the collapse limit state of high-rise buildings subjected to various seismic waves*the collapse resistant capacity ratio of structure is set up with the incremental dynamic analysis(IDA)meth-od.According to the ratio,the evaluation process of earthquake damage and the anti-destruction ability of concrete high-rise buildings based on component performance can be obtained.The experimental results confirm that the proposed method can be used to exactly describe the earth-quake damage and anti-destruction ability of concrete high-rise buildings.