第 47卷第 6期
2015年 12月
西安建筑科技大学学报 (自然科学版)
J．Xi’all Univ．ofArch．&Tech．(Natural Science Edition1
V_01．47 NO．6
Dec．2015
DOI：10．15986~．1006—7930．2015．06．013
某 类 铅 芯 橡 胶 支 座 的 端 部 水 平 动 静 比 研 究
吴 忠 铁 ，范 萍 萍 2， 杜 永 峰 3 王 晓 琴
(1．西北民族大学土木工程学院，甘肃 兰州 730050；
2．兰州工业学院土木工程学院，甘肃 兰州 730050；
3．兰州理工大学防震减灾研究所，甘肃 兰州 730050)
摘要：为了研究铅芯橡胶支座的端部水平动剪力与静剪力的关系，提出了动静比，并对于橡胶剪切模量为 0．6 MPa的铅芯橡
胶支座进行动静比的初步分析，依据建筑抗震设计规范对铅芯橡胶支座竖向设计荷载的规定，采用非线性模型对常用的铅芯
橡胶支座进行动力时程响应分析，研究了铅芯橡胶支座的直径、屈服后刚度与屈服前刚度比及其竖向设计荷载等参数对地震
作用下铅芯橡胶支座端部水平动静比的变化趋势和分布状态的影响，主要探讨了各种参数下剪切变形与动静比的变化关系，
给出了动剪力的简化计算的一般公式．研究表明随着铅芯橡胶支座剪切变形的增大，其动静比逐渐的在降低，动剪力和静剪
力逐渐接近．当剪切变形达到 250％时动静比在 1．25以内，此时动剪力简化计算结果与数值分析结果变化趋势基本一致，具
有一定的可靠性．
关键词：铅芯橡胶支座；动剪力；动静比；非线性模型；剪切变形
中图分类号：TU352．1 文献标志码：A 文章编号：1006 7930(2015)06—0834-04
A nalysis of rate between horizontal dynam ic shearing force
and static shearing force for certain lead rubber bearing
Zhongtie ，FANPingping~ ， DU Yongfeng~，WANG Xiaoqin
(1．School ofCivil Engineering，Northwest University for Nationalities．Lanzhou．730050，China； 2．Schoo1 of Civil Engineering．Lanzhou Institute of Technology．Lanzhou．730050，China；
3．Western Center ofDisaster Mitigation in Civil Engineering ofMinistry ofEducation，Lanzhou Univ．ofTech．，Lanzhou．
730050，China)
Abstract：In order to study the relationship of horizontal dynamic shearing force with static shearing force for the end of 1ead rubber
bearing(LRB)．the ratio between horizontaI dynamic shearing force and static shearing force(RHDS1 of LRB was proposed and analyzed for LRB those shear modulus of rubber is 0．6MPa．According to the demand of the verticalload for LRB in the code for
seismic design ofbuildings．the common LRB were adopted for the dynamic time history response analysis using the nonlinear mod— e1．The effect ofparameters of LRB．including the diameter and ratio between non．yield horizontal stiffness and post．yield horizontal
stifmess and the ve~ical load was studied for the change and distribution for the RHDS Of LRB。and the change of the RHDS and
shear deformation Of LRB under the ea~hquakes was mainly discussed wim different parameters．The general simplified formulas of
horizontal dynamic shearing force for LRB are given．The results show that with the increase of shear deformation the RHDS OfLRB
decreases and its dynamic shearing force iS closed to its static shearing force．The RHDS iS less than 1．25 when the shear defor- marion
某类铅芯橡胶支座的端部水平动静比研究（论文）.pdf
