基于MPA法的交错桁架抗震性能影响因素分析

英文篇名：MPA-based method of staggered truss seismic performance influencing factors analysis
中文刊名：四川建筑科学研究
英文刊名：Sichuan Building Science
作者：应浩 ; 李永山 ; 曲东魁 ; 彭伟
英文作者：YING Hao ; LI Yongshan ; QU Dongkui ; PENG Wei ; School of Civil Engineering ; Southwest Jiaotong University ; Kunming Railway Construction Company of China Railway No.8 Engineering Group Co. ; Ltd.
中文关键词：MPA法 ; 交错桁架 ; 罕遇地震 ; 抗震性能
英文关键词：MPA method ; staggered truss ; severe earthquakes ; seismic performance
出版日期：2013-10-25
机构：西南交通大学土木工程学院;中铁八局集团昆明铁路建设有限公司;
年：2013
期：05
出版单位：四川建筑科学研究

摘要

交错桁架在多遇地震下表现出非常良好的抗震性能。本文基于MPA方法,对交错桁架在罕遇地震下的抗震性能进行初步探讨。通过建立有限元平面模型,分析不同结构高度结构高宽比、桁架形式、桁架跨高比、空腹节间距、底层桁架布置以及底层支撑形式对交错桁架在罕遇地震下抗震性能的影响。对比发现:随着结构高宽比和空腹节间距的减小,以及结构高度减小和平面桁架的落地,交错桁架在罕遇地震下的抗震性能均有不同程度的提高。
Staggered truss showed very good seismic performance of multi-earthquake.Based on the premise of MPA,the preliminary study on the seismic performance of the staggered truss rare earthquake.Through the establishment of the finite element plane model,it will be analysised of the seismic performance of staggered truss under severe earthquakes from different structural height,the structure of high aspect ratio,the truss form of truss span depth ratio,fasting section spacing,the underlying truss layout and the form of the underlying support.Contrast found: With the structure of high aspect ratio and fasting section spacing decreases,as well as reduce the structure height and floor truss staggered truss under severe earthquakes,seismic performance have improved to varying degrees.

引文

[1]潘英,周绪红.交错桁架体系的抗震性能动力分析[J].土木工程学报,2002,35(4):12-16.
    [2]许红胜.钢交错桁架体系的抗震延性性能分析[D].长沙:湖南大学,2003.
    [3]周绪红,龚焮,聂少峰,等.低周反复荷载作用下交错桁架钢结构抗震试验研究与分析[J].建筑结构学报,2009,30(1):133-141.
    [4]冉红东.钢交错桁架体系在循环荷载作用下的破坏机理及抗震设计对策[D].西安:西安建筑科技大学,2008.
    [5]冉红东,苏明周,李虎,等.循环荷载作用下空腹式交错桁架钢结构抗震性能试验研究[J].建筑结构学报,2008,29(6):91-98.
    [6]Chopra A K,Geol R K.A modal pushover analysis procedure for estimating seismic demands for buildings[J].Earthquake Engineering&Structural Dynamics,2002,31(3):561-582.
    [7]Chopra A K,Geol R K,Chintanapakdee C.Evaluation of a modified MPA procedure assuming higher modes as elastic to estimate seismic demands[J].Earthquake Spectra,2004,20(3):757-778.
    [8]马千里,叶列平,陆新征.MPA法与Pushover法的准确性对比[J].华南理工大学学报,2008,36(11):121-128.
    [9]周定松,吕西林.延性需求谱在基于性能的抗震设计中的应用[J].地震工程与工程振动,2004,24(1):30-38.
    [10]伊越,李顺,陈志华.交错桁架多层钢结构多模态推倒分析方法研究[J].土木工程学报,2010,43(5):51-55.
    [11]黄飞.交错桁架结构体系应用及抗震性能研究[D].天津:天津大学,2006.