核心筒抗震性能水准及变形限值研究  

Study on seismic performance levels and deformation limitsof core tubes

作　　者：胡张齐 汪梦甫[2] 罗丹[2] 吕伟荣[3] HU Zhangqi;WANG Mengfu;LUO Dan;L Weirong(College of Civil Engineering,Hunan City University,Yiyang 413000,China;College of Civil Engineering,Hunan University,Changsha 410082,China;College of Civil Engineering,Hunan University of Science and Technology,Hunan Xiangtan,411201,China)

机构地区：[1]湖南城市学院土木工程学院,湖南益阳413000 [2]湖南大学土木工程学院,湖南长沙410082 [3]湖南科技大学土木工程学院,湖南湘潭411201

出　　处：《世界地震工程》2020年第2期92-100,共9页World Earthquake Engineering

基　　金：国家自然科学基金资助项目(带暗支撑高阻尼混凝土组合核心筒结构体系的研究,项目编号:51278181,大跨度现浇厚空心楼盖框架-核心筒结构抗震性能及设计方法研究,项目编号:51578235)。

摘　　要：为研究核心筒抗震性能水准及其指标限值,完成了3个核心筒拟静力试验,记录了损伤过程及对应的层间位移角。在现有核心筒研究成果及国内外规范的基础上,将核心筒的抗震性能水准划分为4个等级,并给出了相应的宏观描述。通过总结相关试验研究结果,发现《建筑抗震设计规范》(GB50011-2010)对层间位移角限制过于严格,考虑到结构带裂缝工作,层间位移角限制过严会增加建筑成本,并导致结构自重增加而不利于抗震,故建议适当放宽核心筒的层间位移角限值,分别给出框架-核心筒及筒中筒结构最大层间位移角建议值。To study the seismic performance levels and quantitative index of core tubes,pseudo-static test of 3 specimens were conducted,damage course and storey drift ratio were then recorded and analyzed.On the basis of existing researches and codes,seismic performance were divided into 4 levels,the corresponding macro-descriptions were also proposed in this study.By summarizing the test results of core tubes,it was found that,the storey drift ratio limits were overly strict in code GB50011-2010.But the concrete structures are commonly used with cracks,too strict limits on storey drift ratios will lead to high construction costs,and increase weight of structures,which is not benefit for seismic resistance.Therefore,it is suggested that the limits of storey drift ratios can be properly relaxed,and limit storey drift ratios of frame-core tube and tube in tube are presented in this paper.

关 键 词：核心筒 抗震性能水准 量化指标 层间位移角 破坏形态 

分 类 号：TU375[建筑科学—结构工程]