轴压比对Y型偏心支撑RC框架抗震性能的影响

英文篇名：The effect of axial compression ratio on seismic property of Y-type eccentrically braced RC frames
中文刊名：苏州科技学院学报(工程技术版)
英文刊名：Journal of Suzhou University of Science and Technology(Engineering and Technology)
作者：王军良 ; 赵宝成
英文作者：WANG Junliang ; ZHAO Baocheng(School of Civil Engineering ; SUST ; Suzhou 215011 ; China)
中文关键词：Y型偏心支撑 ; 轴压比 ; 抗震性能
英文关键词：Y-eccentrically braced RC frames ; axial compression ratio ; seismic performance
出版日期：2012-12-15
机构：苏州科技学院土木工程学院;
年：2012
期：04
出版单位：苏州科技学院学报(工程技术版)

摘要

针对Y型支撑加固多高层混凝土框架工程中框架轴压比的不同,对不同轴压比的Y型偏心支撑砼框架的滞回性能进行了非线性有限元分析。结果表明,随着轴压比的增大,结构的承载力呈先上升后下降的趋势;轴压比的增大能提高结构初始刚度,同时使结构后期刚度下降加快。最后,对Y型支撑加固混凝土框架工程中关于轴压比提出设计建议。
As to the different axis pressures of column in high-level RC frames retrofitted with Y-steel bracings,this paper presents the nonlinear finite element analysis on the hysteresis behavior of the Y-eccentrically braced RC frames under the different axial compression ratio.The analysis indicates that the bearing capacity of the structure tends to fall after rising along with the increase of the axial compressive ratio;the increase of the axial compressive ratio can improve the initial stiffness of structures but also make the later stiffness drop speed up.Finally,this paper suggests the axial compression ratio in the design of the Y-eccentrically braced RC frames.

引文

[1]何绪杰.RC框架内填Y型偏心支撑结构的有限元分析[D].苏州:苏州科技学院,2009.
    [2]顾伟良.Y型钢支撑加固钢筋混凝土框架的非线性分析[D].苏州:苏州科技学院,2010.
    [3]A Ghobarah,H abou Elfath.Rehabilitation of reinforced concrete frame using eccentric steel bracing.Engineering structures,2001,23:745-755.
    [4]Gonzalez Sola,Luis.Retrofitting of RC structures on gravity columns using inverted-Y steel bracing[D].M.S.University of Puerto Rico,Mayaguez(Puerto Rico),2007.
    [5]蒋思成.Y型钢支撑加固钢筋混凝土框架的试验研究[D].苏州:苏州科技学院,2010.
    [6]Hibbitt,Karlsson&Sorensen Inc.ABAQUS user's manuals version 6.3[M].Rhode Island,2002.
    [7]王金昌,陈页开.ABAQUS在土木工程中的应用[M].杭州:浙江大学出版社,2006.
    [8]宋振森.刚性钢框架柱在地震作用下的累积损伤破坏机理及抗震设计对策[D].西安:西安建筑科技大学,2001.
    [9]过镇海,石旭东.钢筋混凝土原理与分析[M].北京:清华大学出版社,2003.
    [10]张新培.钢筋混凝土抗震结构非线性分析[M].北京:科学出版社,2003.