高层钢-混凝土混合结构抗震性能分析
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摘要
目的研究结构的最大位移限值、阻尼比、地震波的输入方向等因素对高层钢-混凝土混合结构抗震性能的影响.方法利用同济大学MTS多高层钢结构设计系统,根据钢-混凝土混合结构抗震概念设计原理建立计算机模型,采用时程分析法进行地震反应分析,计算输入两种地震波时结构最大楼层位移、最大层间位移角沿楼高的分布曲线.结果得到了该建筑物的自振特性,表明结构的最大位移限值、阻尼比、地震波的输入方向等因素对结构的抗震性能均有较大影响.结论笔者的方法分析了对高层钢框架-内混凝土核心筒混合结构体系抗震性能有影响的因素,结构的最大位移限值、阻尼比、地震波的输入方向等因素对高层钢-混凝土混合结构的抗震性能均有较大影响.可以通过设置阻尼器来有效地减小建筑物的地震反应.可为工程实用计算提供可靠的理论依据.
This paper studies the influence of the maximum of the displacement,ratio of traction and the input direction on steel exterior frame concrete interior tube structure.Based on the theory of concept design of steel-concrete hybrid structure and with the help of the MTS system of Tongji University,computer model is established.Moreover,with the time-dependent method,seismic response analysis of a building is carried out to calculate the maximum floor displacement and displacement-angle between floors when two natural earthquake waves are introduced.The relationship between relative storey drifts of steel-concrete mixed building and primary structural parameters is obtained on the basis of statistical investigation into a class of typical structures subjected to various seismic excitations,from which the characteristics of free-vibration are obtained.The results show that the maximum of the displacement,ratio of traction and the input direction have significantly affected the seismic behaviors.The method provided in this paper has discussed the factors,which have influence on steel exterior frame concrete interior tube structure,and it also provides credible technical support to practical approach.
This paper studies the influence of the maximum of the displacement,ratio of traction and the input direction on steel exterior frame concrete interior tube structure.Based on the theory of concept design of steel-concrete hybrid structure and with the help of the MTS system of Tongji University,computer model is established.Moreover,with the time-dependent method,seismic response analysis of a building is carried out to calculate the maximum floor displacement and displacement-angle between floors when two natural earthquake waves are introduced.The relationship between relative storey drifts of steel-concrete mixed building and primary structural parameters is obtained on the basis of statistical investigation into a class of typical structures subjected to various seismic excitations,from which the characteristics of free-vibration are obtained.The results show that the maximum of the displacement,ratio of traction and the input direction have significantly affected the seismic behaviors.The method provided in this paper has discussed the factors,which have influence on steel exterior frame concrete interior tube structure,and it also provides credible technical support to practical approach.
引文
[1]周向明,李国强,丁翔.高层钢-混凝土混合结构弹塑性地震反应简化分析模型[J].建筑结构,2002(5):53-56.
[2]周向明.高层钢-混凝土混合结构弹塑性地震反应简化分析模型研究[D].上海:同济大学土木工程学院,2000.
[3]李国强,沈祖炎.钢结构框架体系弹性及弹塑性分析与计算理论[M].上海:上海科学技术出版社,1998.
[4]李国强,沈祖炎.钢框架弹塑性静动力反应的非线性分析模型[J].建筑结构学报,1990,12(2):534-539.
[5]Helmut K.Pros and cons of a pushover analysis ofseismic performance evaluation[J].EngineeringStructures,1998,20(4):452-464.
[6]赵西安.现代高层建筑结构设计[M].北京:科学出版社,2000.
[7]李国强,冯健.罕遇地震下多高层建筑钢结构弹塑性位移的实用计算[J].建筑结构学报,2000,21(1):573-578.
[8]Tsutomu U,Yi Z,Han B G.Seismic design methodfor thin-walled steel frame structures[J].Journal ofStructure Engineering,2001(2):144-173.
[9]Kato B,Chen W F,Nakao M.Effects of joint-panelshear deformation on frame[J].Construct.Steel Re-search,1998(10):269-320.
[10]张令心,郭丰雨.钢-混凝土混合结构抗震研究述评[J].地震工程与工程震动,2004(3):371-376.
[11]Conci A,Gattass M.Natural approach for thin-walled beam columns with elastic plasticity[J].Int.J.of Numer.Meth.Engrg,1990,29(8):1653-1679.
[2]周向明.高层钢-混凝土混合结构弹塑性地震反应简化分析模型研究[D].上海:同济大学土木工程学院,2000.
[3]李国强,沈祖炎.钢结构框架体系弹性及弹塑性分析与计算理论[M].上海:上海科学技术出版社,1998.
[4]李国强,沈祖炎.钢框架弹塑性静动力反应的非线性分析模型[J].建筑结构学报,1990,12(2):534-539.
[5]Helmut K.Pros and cons of a pushover analysis ofseismic performance evaluation[J].EngineeringStructures,1998,20(4):452-464.
[6]赵西安.现代高层建筑结构设计[M].北京:科学出版社,2000.
[7]李国强,冯健.罕遇地震下多高层建筑钢结构弹塑性位移的实用计算[J].建筑结构学报,2000,21(1):573-578.
[8]Tsutomu U,Yi Z,Han B G.Seismic design methodfor thin-walled steel frame structures[J].Journal ofStructure Engineering,2001(2):144-173.
[9]Kato B,Chen W F,Nakao M.Effects of joint-panelshear deformation on frame[J].Construct.Steel Re-search,1998(10):269-320.
[10]张令心,郭丰雨.钢-混凝土混合结构抗震研究述评[J].地震工程与工程震动,2004(3):371-376.
[11]Conci A,Gattass M.Natural approach for thin-walled beam columns with elastic plasticity[J].Int.J.of Numer.Meth.Engrg,1990,29(8):1653-1679.
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