钢筋混凝土巨型框架结构弹性地震反应分析
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摘要
按照杆系模型的基本理论 ,采用时程分析的方法分析了钢筋混凝土巨型框架结构的弹性地震反应 .根据分析结果 ,得到 :钢筋混凝土巨型框架在地震作用下的侧移曲线为弯剪型 ;主框架梁和柱的刚度对巨型框架弹性地震反应有较大的影响 ,其规律为“双曲线”型 ,即保持其他参数不变 ,随着主框架梁柱刚度的增大 ,结构侧移减小 ,其减小的速率会逐渐减缓 ;次框架梁和柱的刚度对巨型框架的弹性地震反应的影响较小
The elastic dynamic analysis method based on beam column theory is applied to analyze the seismic response of reinforced concrete mega frame structures. According to this analysis, the following conclusions are obtained: First, the displacement curve of reinforced concrete mega frame structures is a type of flexure sheer. Secondly, the stiffnesses of the major columns and the major beams are important factors which influence the elastic seismic response of the reinforced concrete mega frame structures. With increasing stiffnesses of the major columns and the major beams, the horizontal displacements of the structures decrease while the decreasing rates gradually show down. Thirdly, the stiffnesses of the minor columns and the minor beams have little effects on the seismic response of reinforced concrete mega frame structures.
The elastic dynamic analysis method based on beam column theory is applied to analyze the seismic response of reinforced concrete mega frame structures. According to this analysis, the following conclusions are obtained: First, the displacement curve of reinforced concrete mega frame structures is a type of flexure sheer. Secondly, the stiffnesses of the major columns and the major beams are important factors which influence the elastic seismic response of the reinforced concrete mega frame structures. With increasing stiffnesses of the major columns and the major beams, the horizontal displacements of the structures decrease while the decreasing rates gradually show down. Thirdly, the stiffnesses of the minor columns and the minor beams have little effects on the seismic response of reinforced concrete mega frame structures.
引文
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[2]蓝宗建,王新德,戴 航,等.钢筋混凝土巨型框架多功能减振结构体系[J].东南大学学报,1999,29(4A):8187.LanZongjian,WangXinde,DaiHang,etal.Multifunction alvibration absorptionRCmegaframestructures[J].JournalofSoutheastUniversity,1999,29(4A):8187.
[3]惠 卓.巨型框架结构的计算理论及抗震性能的研究[D].南京:东南大学土木工程学院,1998.
[4]杨东升.钢筋混凝土巨型框架结构地震反应分析[D].南京:东南大学土木工程学院,2001.
[5]Toshikatsu,KatsukiTakiguchi.ExperimentalverificationofbeammodelsforRC[J].JournalofStructuralEngineering,1994,120(8):9399.
[6]PrakashV ,PowellGH ,FilippouFC .DRAIN 2DXbaseprogramuserguide[M].California:DepartmentofCivilEn gineeringUniversityofCalifornia,1992.1347.
[7]ComputersandStructuresInc.SAP2000analysisreferencevolume1[M ].California:ComputersandStructuresInc.1997.145179.
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