考虑竖向地震效应的模态Pushover分析方法

尹犟; 易伟建

doi:10.13204/j.gyjz200905008

考虑竖向地震效应的模态Pushover分析方法

doi: 10.13204/j.gyjz200905008

尹犟,
易伟建

1.
湖南大学土木工程学院,长沙 410082

基金项目:

国家自然科学基金(50678064);湖南省科技厅重点项目(06FJ3003)资助

详细信息

作者简介:
尹犟，男，1975年10月出生，博士生。E-mail:yinjiang2001@yahoo.com.cn

计量
- 文章访问数: 115
- HTML全文浏览量: 21
- PDF下载量: 49
- 被引次数: 0
出版历程
- 收稿日期: 2009-01-20
- 刊出日期: 2009-05-20

THE MODAL PUSHOVER ANALYSIS WITH THE CONSIDERATION OF THE VERTICAL SEISMIC EFFECTS

1.
College of Civil Engineering,Hunan University,Changsha 410082,China

摘要

摘要: 传统的Pushover方法未考虑竖向地震效应对结构水平位移需求的影响，当地面运动中竖向分量所占比例相对较高时，该方法很难对结构最大位移需求作出精确估计。通过对其进行改进，提出首先对结构按一定方式施加竖向地震引起的惯性力，随后进行结构水平向的多模态推覆分析，并按SRSS方法计算其最大位移需求。最后采用一多层混凝土框架结构对其进行验证，结果表明，该方法所得的楼层位移及层间位移角与非线性时程分析结果十分接近，具有较高的精度。
- 竖向地震 /
- Pushover分析 /
- 竖向模态 /
- 位移需求
Abstract: In the traditional Pushover method,the vertical earthquake effect,which has an impact on horizontal displacement,is not taken into consideration.When the seismic intensity in vertical direction takes a high ratio,it is hard to accurately estimate the maximum displacement demands on structure by the traditional Pushover method.Hence,the paper aims at making improvement on the traditional one.Firstly,the inertial force caused by vertical earthquake is enforced on structure according to certain means.Then,the multi-mode Pushover analysis procedures are applied in the horizontal direction of structure,and the maximum displacement demand is calculated on the ground of SRSS method.A multistory concrete frame is applied to testify this theory.The data shows that,using the improved method,the numerical results of floor displacement and story drift ratio are well agreed with the results from nonlinear time-history analysis,which demonstrated that the improved method is of high accuracy.
- vertical earthquake /
- pushover analysis /
- vertical mode /
- displacement demands

HTML全文

参考文献(19)

[2] Bozorgnia Y,Niazi M,Campbell K W.Characteristics of Free-FieldVertical Ground Motion During the Northridge Earthquake[J].Earthquake Spectra.1995,11(4):515-525;

沈聚敏,周锡元,高小旺,等.抗震工程学[M].北京:中国建筑工业出版社,2000:339-341;

[3] Bozorgnia Y,Niazi M.Distance Scaling of Vertical and HorizontalResponse Spectra of the Loma Prieta Earthquake[J].EarthquakeEngineeringStructural Dynamics,1993,22(8):695-707;

[4] Niazi M,Bozorgnia Y.Behavior of Near-Source Peak Horizontal andVertical Ground Motion over SMART-1 Array,Taiwan[J].Bulletin ofSeismological Society of America,1991,81(3):715-732;

[5] Niazi M,Bozorgnia Y.Behavior of Near Source Vertical andHorizontal Response Spectra at SMART-1 Array,Taiwan[J].Earthquake EngineeringStructural Dynamics,1992,21(1):37-50;

[6] 钱培风.高层建筑的抗震问题[J].世界地震工程,1992(3):15-21;

[7] 胡庆昌.1995年1月17日日本阪神大地震中神户市房屋结构震害简介[J].建筑结构学报,1995,16(3):10-12;

[8] 周正华,周雍年,卢滔,等.竖向地震动特征研究[J].地震工程与工程振动,2003,23(3):25-29;

[9] GB 500552001建筑抗震设计规范[S];

[10] Krawinkler H,Seneviratna G D P K.Pros and Cons of a PushoverAnalysis of Seismic Performance Evaluation[J].Engineering Structure,1998,20:452-464;

[11] Gupta B,Kunnath S K.Adaptive Spectra-Based Pushover Procedurefor Seismic Evaluation of Structures[J].Earthquake Spectra,2000,16(2):367-391;

[12] Chopra A K,Goel A K.A modal Pushover Analysis Procedure toEstimate Seismic Demands for Buildings:Theory and PreliminaryEvaluation[R].Report No.Peer-2001/03.Berkeley:PacificEarthquake Engineering Research Center,University of California,2001;

[13] Chopra A K,Goel R K.A modal Pushover Analysis Procedure forEstimating Seismic Demands for Buildings[J].Earthquake Engineeringand Structural Dynamics.2002,31(3):561-582;

[14] Chopra A K,Geol R K,Chatpan Chintanapakdee.Evaluation of aModified Mpa Procedure Assuming Higher Modes as Elastic to EstimateSeismic Demands[J].Earthquake Spectra,2004,20(3):757-778;

[15] Lin Y K.Column Response to Horizontal-Vertical Earthquake[J].Journal of the Engineering Mechanics Division,ASCE 1980,106(6):1099-1109;

[16] 李创第,邹万杰,黄天立,等.结构在水平与竖向地震同时作用的非平稳响应[J].土木工程学报,2005,38(6):25-53;

[17] FEMA 356.Prestandard and Commentary for the SeismicRehabilitation of Buildings[R].Washington,D C:Federal EmergencyManagement Agency,2000;

[18] GB 500102002混凝土结构设计规范[S];

[19] 叶列平.混凝土结构[M].北京:清华大学出版社,2000:12-18.

施引文献

资源附件(0)

访问统计