高强钢筋高强混凝土框架结构滞回耗能分析  

Hysteretic energy dissipation of high-strength concrete frame structure reinforced with pre-stressed rebars

作　　者：陈鑫[1,2] 阎石[1,2] 季保建[1] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]大连理工大学土木水利学院,辽宁大连116024

出　　处：《地震工程与工程振动》2011年第3期83-90,共8页Earthquake Engineering and Engineering Dynamics

基　　金：辽宁省自然科学基金项目(20052005)

摘　　要：本文研究配有高强钢筋的高强混凝土框架结构的耗能性能与抗震能力。对2层2榀1/2比例的模型结构进行了拟动力试验,分析了高强钢筋的高强混凝土框架结构在地震作用下的滞回反应和耗能能力,探讨了结构在地震作用下的破坏机理,滞回特性及薄弱环节或部位。结构的延性系数达到4.0以上,等效阻尼系数达到0.055以上。试验结果表明,此类结构具有较强的变形和耗能能力,抗震性能较好,所提出的方法能够用于地震区高强混凝土框架结构体系之中。This paper presents an experimental analysis of energy dissipation and seismic property of a high-strength concrete structure reinforced with pre-stressed rebars.A pseudo-dynamic experiment on 1/2 scale model with two floors and two bays is conducted in the laboratory,focusing on the analysis of hysteretic responses and energy dissipation capacity of the structure under seismic action,and a discussion is had on the damage mechanism,hysteretic property and weak locations or parts of the structure.The experimental results show that the ductility coefficient is great than 4.0 and the equivalent damping ratio is higher than 0.055.It also shows that this kind of frame structure has remarkable deformation and dissipation capacity as well as high seismic performance.The proposed method can be applied to the high-strength concrete structures in seismic zones.

关 键 词：拟静力和动力试验 高强混凝土 框架结构 滞回特性 耗能能力 

分 类 号：P315.95[天文地球—地震学] TU352.1[天文地球—固体地球物理学]