摘要
为考察框架-核心筒结构超限后的抗震性能,本文选取某实际工程进行研究。首先对工程实际情况(包括建筑几何尺寸、构件类型、材料强度等)进行介绍,再通过ABAQUS软件建立结构模型。选取合适的地震波,对该结构在地震作用下的实际反应进行模拟。从结构的顶点位移、层间变形、基底剪力、能量耗散、混凝土损伤和钢材的塑性应变等角度对该框架-核心筒结构的抗震性能进行评估。分析结果表明,在不同的工况作用下,该框架-核心筒结构的顶点位移峰值以及基底剪力峰值均相差不大;中间层的层间位移需求较大,底部和顶部较小;结构呈现"连梁-墙肢-框架"的屈服机制,外框架柱混凝土损伤较小,具有足够的安全储备。
In order to investigate seismic performances of super high-rise frame-core wall structure,a practical project is chosen. First,base situation（ such as construction geometry size,component types,and strength of materials） of the project is introduced,then the structure model is established by ABAQUS,and the appropriate seismic waves are selected to simulate responses of structure. Using some performance indexes,such as the max vertex displacement,base shear,the inter-story deformation,energy dissipation,the plastic strain of steel and damage of concrete,the seismic performances of the structure are evaluated. The results show that under different conditions,the max vertex displacements of the structure and base shear are similar,the inter-story deformation is biggest in middle of structure. The yield order is coupling beam,then wall column,last frame structure. The concrete damage of column is small,it has adequate safety reserves.
出处
《工程抗震与加固改造》
北大核心
2016年第1期21-29,共9页
Earthquake Resistant Engineering and Retrofitting
基金
国家自然科学基金项目(11372209)
山西省回国留学人员科研及择优资助项目(2013-044)
关键词
框架-核心筒
超限高层结构
弹塑性时程分析
抗震性能
frame-core wall
super high-rise structure
nonlinear dynamic time-history analysis
seismic performance
