基于静力推覆分析算法的高层建筑混凝土核心筒抗震性能模拟  

Seismic performance simulation of high⁃rise concrete core tube based on static nappe analysis algorithm

作　　者：雷鸣[1] 尹思阳 王德玲[1] 张继承[1] 路世伟 LEI Ming;YIN Si-yang;WANG De-ling;ZHANG Ji-cheng;LU Shi-wei(School of Urban Construction,Yangtze University,Jingzhou 434023,China)

机构地区：[1]长江大学城市建设学院,湖北荆州434023

出　　处：《吉林大学学报（工学版）》2023年第9期2573-2580,共8页Journal of Jilin University:Engineering and Technology Edition

摘　　要：为减少因震动导致的高层建筑混凝土核心筒损伤,提出了基于静力推覆分析算法的高层建筑混凝土核心筒抗震性能模拟方法。选择某应用屈曲约束支撑的高层建筑混凝土核心筒为研究对象,结合PKPM软件模拟了基于静力推覆分析算法的高层建筑混凝土核心筒抗震性能。实验结果表明:静力推覆侧力分布形式对高层建筑混凝土核心筒的顶点位移角和基底剪力计算结果影响较大;屈曲约束支撑的高层建筑混凝土核心筒在X向的基底剪力曲线呈指数型增长;强震动作用下高层建筑混凝土核心筒的刚度降低、柱剪力的占比不断增大;延性系数恒定时,高层建筑混凝土核心筒能量谱比值与刚度折减系数呈正相关关系;高层建筑混凝土核心筒的损伤情况随强震持时的提升而提升;随着刚度特征值的不断增大,剪力墙耗能在总滞回耗能比中的占比下降,而框架梁柱耗能的占比则有所上升且分布形式大致呈线性。In order to reduce the damage of concrete core tube of high-rise buildings caused by vibration,the seismic performance simulation method of concrete core tube of high-rise buildings based on static pushover analysis algorithm was studied.A high-rise building concrete core tube with buckling constraint bracing was selected as the research object,and the seismic performance of high-rise building concrete core tube based on static nappe analysis algorithm was simulated with software PKPM.The test results show that the distribution of the lateral force of the static nappe has great influence on the calculation results of the apex displacement angle and the base shear force of the concrete core tube in high-rise buildings.In the Xdirection,the base shear curve of concrete core tube supported by buckling constraint increases exponentially.The stiffness of concrete core tube decreases and the proportion of column shear increases under strong vibration.When ductility coefficient is constant,the ratio of energy spectrum of high-rise concrete core tube is positively correlated with stiffness reduction coefficient.The damage of concrete core tube in high-rise building caused by longer strong earthquake duration increases with the increase of strong earthquake duration.With the increasing of the characteristic stiffness value,the proportion of the energy consumption of shear wall in the total hysteretic energy consumption ratio decreases,while the proportion of the energy consumption of frame beam and column increases and the distribution pattern is roughly linear.

关 键 词：静力推覆分析 高层建筑 混凝土核心筒 抗震性能模拟 顶点位移角 基底剪力 

分 类 号：TU971[建筑科学—建筑理论]