[1]吴忠铁,范萍萍,杜永峰,等.某类铅芯橡胶支座的端部水平动静比研究[J].西安建筑科技大学学报：自然版,2015,47(06):834-837.[doi:10.15986/j.1006-7930.2015.06.013]
　WU Zhongtie,FAN Pingping,DU Yongfeng,et al.Analysis of rate between horizontal dynamic shearing force and static shearing force for certain lead rubber bearing[J].J.Xi’an Univ. of Arch. & Tech.：Natural Science Edition,2015,47(06):834-837.[doi:10.15986/j.1006-7930.2015.06.013]
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某类铅芯橡胶支座的端部水平动静比研究()
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西安建筑科技大学学报：自然版[ISSN:1006-7930/CN:61-1295/TU]

卷:
47
期数:
2015年06期
页码:
834-837
栏目:
出版日期:
2016-01-15

文章信息/Info

Title:
Analysis of rate between horizontal dynamic shearing force and static shearing force for certain lead rubber bearing
文章编号:
1006-7930(2015)06-0834-04
作者:
吴忠铁1; 范萍萍2;  杜永峰3;  王晓琴1
(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 )
Author(s):
WU Zhongtie1;  FAN Pingping2;  DU Yongfeng3;  WANG Xiaoqin1
(1.School of Civil Engineering, Northwest University for Nationalities. Lanzhou. 730050, China; 2. School of Civil Engineering, Lanzhou Institute of Technology, Lanzhou. 730050, China; 3.Western Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou Univ. of Tech., Lanzhou 730050, China)
关键词:
铅芯橡胶支座; 动剪力; 动静比; 非线性模型; 剪切变形
Keywords:
lead rubber bearing;  dynamic shearing force;  ratio between dynamic shearing force and static shearing force;  nonlinear model;  shear deformation
分类号:
TU352.1
DOI:
10.15986/j.1006-7930.2015.06.013
文献标志码:
A
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．
Abstract:
In order to study the relationship of horizontal dynamic shearing force with static shearing force for the end of lead rubber bearing (LRB), the ratio between horizontal dynamic shearing force and static shearing force (RHDS) of LRB was proposed and analyzed for LRB those shear modulus of rubber is 0.6MPa. According to the demand of the vertical load for LRB in the code for seismic design of buildings, the common LRB were adopted for the dynamic time history response analysis using the nonlinear model. The effect of parameters of LRB, including the diameter and ratio between non-yield horizontal stiffness and post-yield horizontal stiffness and the vertical 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 earthquakes was mainly discussed with 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 of LRB decreases and its dynamic shearing force is closed to its static shearing force. The RHDS is less than 1.25 when the shear deformation of LRB is 250%, and the result change of the general simplified formulas is the same as that of numerical analysis and the general simplified formulas proved to be reliable

参考文献/References:

References

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相似文献/References:

[1]金建敏,谭 平,周福霖,等.修正双线性模型对隔震结构地震响应影响的研究[J].西安建筑科技大学学报：自然版,2016,48(02):183.[doi:10.15986/j.1006-7930.2016. 02.006]
　JIN Jianmin,TAN Ping,ZHOU Fulin,et al.Study on the effect of modified bilinear model on seismic response of isolated structures[J].J.Xi’an Univ. of Arch. & Tech.：Natural Science Edition,2016,48(06):183.[doi:10.15986/j.1006-7930.2016. 02.006]

备注/Memo

备注/Memo:
收稿日期：2015-07-13 修改稿日期：2015-12-10
基金项目：西北民族大学中央高校基本科研业务费专项资金项目(31920150019，31920150020)；西北民族大学引进人才科研项目(xbmuyjrc201405)；兰州工业学院青年科技创新项目(15K-008)
作者简介：吴忠铁(1982-)，男，副教授，博士，主要从事工程结构减隔震控制研究．E-mail:wuzhongtie1982@163.com
更新日期/Last Update: 2016-01-29