基于整体设计法的L型不规则结构隔震设计  

Seismic Isolation Design of L-shaped Plane Irregular Structure Based on Overall Design Method

作　　者：滕振超[1] 张家浩 霍静轶 黄漪澜 计静[1] TENG Zhenchao;ZHANG Jiahao;HUO Jingyi;HUANG Yilan;JI Jing(School of Civil Engineering and Architecture,Northeast Petroleum University,Daqing,Heilongjiang 163318,China)

机构地区：[1]东北石油大学土木建筑工程学院,黑龙江大庆163318

出　　处：《河北工程大学学报(自然科学版)》2025年第1期1-8,17,共9页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：黑龙江省自然科学基金联合引导项目(LH2020E018);大庆市指导性科技计划项目(ZD-2021-40);东北石油大学创新引导项目(2020YDL-02)。

摘　　要：为减少L型不规则结构的扭转效应,探讨隔震设计中隔震层三种抗震缝设置方案对扭转效应的控制效果,提出针对L型不规则结构的整体设计流程。基于复振型分解反应谱法,对某L型建筑建立上部结构-隔震层-下部结构整体模型,通过迭代计算确定隔震装置的等效刚度与等效阻尼比,并进行修正反应谱计算;在SAUSG中对最优方案补充弹塑性时程分析,验算罕遇地震下支座极限位移与楼层位移角。结果表明,整体设计法以底部剪力比确定隔震目标,采用多计算模型包络,能更直观、方便地进行隔震设计。采取设置竖向抗震缝的方案将扭转位移比从1.60降低至1.16,位移角从1/212降低至1/505,有效控制了扭转效应。To reduce the torsional effect of L-shaped irregular structures,this paper explores the control effect of three seismic joint design schemes for the isolation layer on torsional effect in seismic isolation design,and proposes an overall design process for L-shaped irregular structures.Based on the complex mode decomposition response spectrum method,an overall model of the upper structure isolation layer lower structure of an L-shaped building is established.The equivalent stiffness and damping ratio of the isolation device are determined through iterative calculation,and the modified response spectrum calculation is carried out;Add elastic-plastic time history analysis to the optimal solution in SAUSG,and verify the ultimate displacement of the support and the displacement angle of the floor under rare earthquakes.The overall design method determines the seismic isolation target based on the bottom shear ratio and uses multiple calculation model envelopes to make seismic isolation design more intuitive and convenient.The scheme of setting vertical seismic joints was adopted to reduce the torsional displacement ratio from 1.60 to 1.16,and the displacement angle from 1/212 to 1/505,effectively controlling the torsional effect.

关 键 词：隔震设计 扭转效应控制 整体设计法 SAUSG弹塑性时程分析 L型不规则结构 

分 类 号：TU318[建筑科学—结构工程]