框架-剪力墙结构隔震支座设计值的优化选择方法  

Optimalizing selection method of design value of vibro-isolation bearing in frame-shear wall structure

作　　者：杜永峰[1,2] 乔愉博 黄小宁[1] DU Yong-feng;QIAO Yu-bo;HUANG Xiao-ning(Institute of Earthquake Protection and Disaster Mitigation,Lanzhou Univ.of Tech.,Lanzhou 730050,China;Western Center of Disaster Mitigation in Civil Engineering,the Ministry of Education,Lanzhou Univ.of Tech.,Lanzhou 730050,China)

机构地区：[1]兰州理工大学防震减灾研究所,甘肃兰州730050 [2]兰州理工大学西部土木工程防灾减灾教育部工程研究中心,甘肃兰州730050

出　　处：《兰州理工大学学报》2018年第5期114-119,共6页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(51578274);教育部长江学者创新团队项目(IRT13068)

摘　　要：采用传统重力荷载代表值选取框架-剪力墙隔震支座的方法(简称为GM)难以避免隔震支座拉应力超出允许值的问题.针对该问题,将罕遇水平地震影响系数减少至1/3～1/2的反应谱输入抗震结构,把计算所得的结构抗倾覆力因素作为隔震支座选择的依据,提出一种针对框架-剪力墙隔震结构的设计方法(简称为G-RM).通过对分别运用两种方法设计的模型进行计算对比,结果表明G-RM在框架-剪力墙隔震结构设计中能够更为准确地选择隔震支座,有效避免隔震支座拉应力超出允许值.采用G-RM可以使框架-剪力墙隔震结构设计更为便捷有效.Should the traditional method of gravity load representative value(GM for short)was used to select the vibro-isolation bearing of the frame-shear wall,it would be difficult to avoid such a problem that the tensile stress in the vibro-isolation bearing exceeds its allowable value.Aimed at this problem,the influencing coefficient of the rare horizontal earthquake was reduced by 1/3 to 1/2 of response spectrum and then was inputted into the anti-seismic structure,the anti-overturning force factor of the structure was evaluated and taken as a basis of selection of the vibro-isolation bearing,and a design method of vibro-isolation structure for frame-shear wall(G-RM for short)was presented.It is shown by computation and comparison of models designed with two approaches that in the design of the vibro-isolation structure of frame shear wall,the vibro-isolation bearing can be selected more precisely by means of G-GM and the excessive tensile stress in the vibro-isolation bearing will be avoided effectively.Utilization of G-RM will be able to make the design of the vibro-isolation structure of frame-shear wall easier,faster,and more valid.

关 键 词：框架-剪力墙隔震结构 倾覆力矩 隔震支座 拉应力 

分 类 号：TU318.1[建筑科学—结构工程] TU352.1