局部构件加固对钢筋混凝土框架结构整体性能的影响
|
摘要
以典型钢筋混凝土框架结构校舍为研究对象,运用SAP2000有限元分析软件,研究了典型钢筋混凝土框架校舍局部构件的加固对结构整体性能(包括整体框架静力抗侧刚度、整体框架动力特性)的影响,并进行了地震反应谱分析、线性时程分析和静力非线性分析(Pushover分析)。结果表明:此类结构局部构件的加固,对整体框架静力抗侧刚度、层间位移角、动力特性、规范地震反应谱下的内力峰值、塑性铰出现顺序以及不同地震作用下的构件内力及节点反应谱峰值,均存在较大的影响,且结构在大震下的构件屈服顺序亦发生了改变,在实际工程中应当引起重视。
Taking the typical school building of reinforced concrete frame structure as a research object,the influence of local members strengthening on the overall performance of the typical school building of reinforced concrete frame structure was explored by finite element software SAP2000.The contents cover the static lateral stiffness of the whole reinforced concrete frame structure,the dynamic performance of the whole frame,response spectrum analysis,static nonlinear analysis(pushover analysis) and the calculation of linear time history under three different earthquake records.The results show that the local member strengthening greatly affects the static lateral stiffness of the whole frame,the dynamic performance,story drift ratio,the peak of internal forces under standard earthquake spectrum of current Chinese code,appearing order of plastic hinge,node response spectrum under three different earthquakes,and the yield order of members when the earthquake happens.Much attention should be paid to it in practical projects.
Taking the typical school building of reinforced concrete frame structure as a research object,the influence of local members strengthening on the overall performance of the typical school building of reinforced concrete frame structure was explored by finite element software SAP2000.The contents cover the static lateral stiffness of the whole reinforced concrete frame structure,the dynamic performance of the whole frame,response spectrum analysis,static nonlinear analysis(pushover analysis) and the calculation of linear time history under three different earthquake records.The results show that the local member strengthening greatly affects the static lateral stiffness of the whole frame,the dynamic performance,story drift ratio,the peak of internal forces under standard earthquake spectrum of current Chinese code,appearing order of plastic hinge,node response spectrum under three different earthquakes,and the yield order of members when the earthquake happens.Much attention should be paid to it in practical projects.
引文
[1]全学友,米伟,张智强,等.汶川地震中楼梯结构的破坏现象及对策[J].建筑结构,2009,39(11):75-77.Quan X Y,Mi W,Zhang Zh Q,et al.Special failuremodes of stair structures by Wenchuan earthquake andits countermeasures[J].Building Structures,2009,39(11):75-77.
[2]沈靓,柳炳康,张瑜中,等.汶川地震中框架楼梯典型震害分析与有限元计算[J].工程抗震与加固改造,2010,32(4):114-119.Shen L,Liu B K,Zhang Y Zh,et al.Typical seismicdamage analysis and finite element calculation of stairin frame in Wenchuan earthquake[J].Earthquake Re-sistant Engineering and Retrofitting,2010,32(4):114-119.
[3]汪梦甫,郭新华.楼梯对教学楼框架抗震性能的影响[J].工程抗震与加固改造,2011,33(3):20-28.Wang M F,Guo X H.Effects of staircase on seismicperformance of school building of frame structure[J].Earthquake Resistant Engineering and Retrofitting,2011,33(3):20-28.
[4]张望喜,易伟建,肖岩,等.“5.12”汶川地震灾区典型教学楼框架与楼梯共同工作性能[J].建筑科学与工程学报,2009,26(2):38-45.Zhang W X,Yi W J,Xiao Y,et al.Interaction per-formance between frames and stairs of typical teachingbuilding in“5.12”Wenchuan earthquake disaster area[J].Journal of Architecture and Civil Engineering,2009,26(2):38-45.
[5]王社良.抗震结构设计[M].武汉:武汉理工大学出版社,2007.Wang Sh L.Seismic Structure Design[M].Wuhan:Wuhan University of Technology Press,2007.
[2]沈靓,柳炳康,张瑜中,等.汶川地震中框架楼梯典型震害分析与有限元计算[J].工程抗震与加固改造,2010,32(4):114-119.Shen L,Liu B K,Zhang Y Zh,et al.Typical seismicdamage analysis and finite element calculation of stairin frame in Wenchuan earthquake[J].Earthquake Re-sistant Engineering and Retrofitting,2010,32(4):114-119.
[3]汪梦甫,郭新华.楼梯对教学楼框架抗震性能的影响[J].工程抗震与加固改造,2011,33(3):20-28.Wang M F,Guo X H.Effects of staircase on seismicperformance of school building of frame structure[J].Earthquake Resistant Engineering and Retrofitting,2011,33(3):20-28.
[4]张望喜,易伟建,肖岩,等.“5.12”汶川地震灾区典型教学楼框架与楼梯共同工作性能[J].建筑科学与工程学报,2009,26(2):38-45.Zhang W X,Yi W J,Xiao Y,et al.Interaction per-formance between frames and stairs of typical teachingbuilding in“5.12”Wenchuan earthquake disaster area[J].Journal of Architecture and Civil Engineering,2009,26(2):38-45.
[5]王社良.抗震结构设计[M].武汉:武汉理工大学出版社,2007.Wang Sh L.Seismic Structure Design[M].Wuhan:Wuhan University of Technology Press,2007.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心