摘要
提出一种新型抗拉装置以解决高烈度区高层隔震结构支座拉应力超限问题。基于该装置的力学试验数据推导出简化模型,采用ETABS2015有限元软件的多段线弹性连接单元对抗拉装置进行模拟;对一栋高宽比为4.1的高层框剪结构进行隔震设计,在穿越隔震层的电梯井下布置抗拉装置,并与未采用抗拉装置的模型进行时程分析对比。分析结果表明:多段线弹性连接单元可真实模拟抗拉装置拉压状态下的力学特性,采用该装置可减小隔震结构支座拉应力,解决了高层隔震项目中隔震支座拉应力超限的问题。
A new type of anti-tension device is developed to solve the problem of isolation bearing tensile stress over limit of high-rise isolation structures in high-intensity earthquake region.Based on the mechanical experimental data of the device,a simplified model is derived.The simulation is carried out by using the multilinear elastic element of ETABS finite element software.Aseismic design of an actual high-rise frame-shear structure with high aspect ratio is operated,anti-tensile devices are arranged under the elevator.A time history analysis comparison with the model not using anti-tensile device is made.The results show that the multilinear elastic element can simulate tensile and compressive mechanic characteristics of anti-tension device.Using this device can reduce the tensile stress of isolation bearing,which means the problem of isolation bearing tensile stress over limit for high-rise isolation projects could be solved.
作者
齐毅男
孙蓉
管庆松
曾传旺
Qi Yi-nan;Sun Rong;Guan Qing-song;Zeng Chuan-wang(Quakesafe Technologies Co.Ltd,Kunming 650217,China)
出处
《工程抗震与加固改造》
北大核心
2020年第4期93-98,共6页
Earthquake Resistant Engineering and Retrofitting
关键词
抗拉装置
简化模型
高宽比超限
高层隔震结构
时程分析
anti-tension device
simplified model
aspect ratio over limit
high-rise isolation structure
time-history analysis
