地震作用下不同混凝土柱端叠层橡胶支座的应力和变形分析

杜永峰; 吴忠铁; 范萍萍

doi:10.13204/j.gyjz201203007

地震作用下不同混凝土柱端叠层橡胶支座的应力和变形分析

doi: 10.13204/j.gyjz201203007

1.
1. 兰州理工大学防震减灾研究所,兰州 730050;
2.
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,兰州 730050;
3.
3. 兰州工业高等专科学校,兰州 730050

基金项目:

国家自然科学基金项目(50778087;50978130)

详细信息

作者简介:
杜永峰，男，1962年出生，博士，教授，博士生导师。E-mail:dooyf@lut.cn

计量
- 文章访问数: 109
- HTML全文浏览量: 17
- PDF下载量: 119
- 被引次数: 0
出版历程
- 收稿日期: 2011-09-22
- 刊出日期: 2012-03-20

ANALYSIS OF STRESS AND DEFORMATION OF LAMINATED RUBBER BEARING CONNECTED WITH THE RC COLUMNS UNDER EARTHQUAKE

1.
1. Institute of Earthquake Protection and Disaster Mitigation,Lanzhou Univ.of Tech.,Lanzhou 730050,China;
2.
2. Western Center of Disaster Mitigation in Civil Engineering of Ministry of Education,Lanzhou Univ.of Tech.,Lanzhou 730050,China;
3.
3. Lanzhou Polytechnic College,Lanzhou 730050,China

摘要

摘要: 近年来,在基础隔震中将叠层橡胶垫放置于地下室混凝土柱顶的串联隔震形式被大量应用,这样有利于地下空间利用,然而,在地震作用下,叠层橡胶支座既承受竖向重力荷载又承受水平和竖向地震作用,同时还受下端约束的影响,在这种情况下,叠层橡胶支座的受力与变形必然受到影响。针对这个问题,对三种串联隔震体系进行了有限元模拟。对比计算结果表明,混凝土柱刚度对于叠层橡胶支座的应力和变形影响较为明显,刚度越大叠层橡胶支座下端转角越小,达到塑性应力时位移越大。
- 基础隔震 /
- 叠层橡胶垫 /
- 串联隔震体系 /
- 应力 /
- 变形
Abstract: Recently,the serial isolation system,i.e.the laminated rubber bearing is on the top of RC columns the basement,is widely applied in the base isolation building,it helps to underground space utilization.However,in the earthquake,the performance of laminated rubber bearings is affected by vertical gravity load and both horizontal and vertical seismic force and lower constraint.In this case,the stress and the deformation of laminated rubber bearings is affected and remains to be analyzed.Three models of serial isolation system are analyzed for this problem on the paper.Compared with the results,it indicates that the stiffness of RC column has the great influence in the stress and the deformation of laminated rubber bearing.With the increasing of stiffness the corner of the bottom of the laminated rubber bearings is smaller and the displacement is larger when the plastic stress occuts.
- base isolation /
- laminated rubber bearing /
- serial isolation system /
- stress /
- deformation

HTML全文

参考文献(11)

建筑抗震设计规范[S].2010.

刘文光,周福霖,庄学真. 柱端隔震夹层橡胶垫力学性能试验研究[J].地震工程与工程振动,1999,(03):121-126.

张敏政,孟庆利,裴强. 叠层橡胶隔震支座的动态稳定性和力学特性研究[J].地震工程与工程振动,2002,(05):87-91.

杨巧荣,庄学真,刘文光. 夹层橡胶隔震支座全刚性性能、回转刚性及高压缩应力性能试验研究[J].地震工程与工程振动,2000,(04):118-125.

周锡元,韩淼,曾德民. 橡胶支座与R/C柱串联隔震系统水平刚度系数[J].振动工程学报,1999,(02):159-165.

杜永峰,李慧. 叠层橡胶垫与RC柱串联隔震体系的随机屈曲分析[J].防灾减灾工程学报,2010.16-21.

杜永峰,杨静成. 串联隔震体系静力性能有限元分析[J].工程抗震与加固改造,2010,(04):26-31.

Haringx J A. On Highly Compressible Helical Springs and RubberRods and Their Application for Vibration-Free Mountings[R].I.Philips Res.Rep,1948.401-449.

Koh C G,Kelly J M. Effects of Axial Load on Elastomeric Bearings[R].Berkeley:UCB/EERC-86/12,Earthquake EngineeringResearch Center,University of California,1986.

Nagarajaiah S,Ferrell K. Stability of Elastomeric Seismic IsolationBearings[J].Journal of Structural Engineering ASCE,1999,(09):946-954.

Buckle I G,Liu H. Experimental Determination of Critical Loadsof Elastomeric Isolators at High Shear Strain[J].NCEERBulletin,1994,(03):1-5.

施引文献

资源附件(0)

访问统计