基于性能的支撑钢框架结构方案对比分析
|
摘要
采用Pushover能力谱法对8层钢框架建筑进行基于性能的结构方案设计,考虑偏心支撑钢框架、隅撑支撑钢框架、纯钢框架3种结构体系,对结构自振特性、层间位移角及楼层侧移变化规律、结构刚度及耗能特征以及投资一收益等进行详细对比分析。结果表明:隅撑支撑钢框架和偏心支撑钢框架具有良好的结构性能,同样性能目标下,两者的经济效益相差不大,均可比纯钢框架节省近40%的用钢量,隅撑支撑钢框架的损失期望比例最小。
The structural scheme of an eight stories steel frame building is designed based on performance by using Pushover capacity spectrum method in this study.The natural vibration period of structure,story drift, variation characteristics of story lateral displacement,stiffness,energy dissipation feature and investment-income of the three structural schemes of eccentric braced steel frame(EBF),knee braced steel frame(KBF)and moment resisting steel frame(MRF)are compared.The results indicate that the EBF and KBF possess of much more favorable frame performance than MRF,in addition,under the same performance objective,the economic benefit of EBF is similar to that of KBF and the quantity of steel consumption of EBF or KBF is 40%less than that of MRF, moreover,the proportion of expected loss of KBF is the least in the three structural schemes.
The structural scheme of an eight stories steel frame building is designed based on performance by using Pushover capacity spectrum method in this study.The natural vibration period of structure,story drift, variation characteristics of story lateral displacement,stiffness,energy dissipation feature and investment-income of the three structural schemes of eccentric braced steel frame(EBF),knee braced steel frame(KBF)and moment resisting steel frame(MRF)are compared.The results indicate that the EBF and KBF possess of much more favorable frame performance than MRF,in addition,under the same performance objective,the economic benefit of EBF is similar to that of KBF and the quantity of steel consumption of EBF or KBF is 40%less than that of MRF, moreover,the proportion of expected loss of KBF is the least in the three structural schemes.
引文
1邹昀，吕西林．基于结构性能的抗震设计理论与方法．工业建筑，2006，36(9)：1—5
2李刚，程耿东．基于性能的结构抗震设计——理论、方法与应用．北京：科学出版社，2004
3郭仕群．使用偏心支撑减小不规则高层建筑的扭转振动效应．地震工程与工程振动，2005，25(3)：76—80
4季克和，董军．隅撑支撑钢框架地震时程分析//刘伟庆，凌祥，张大长．力学与工程．北京：知识产权出版社，2006：103—108
5 Wen Y K,Kang Y J.Minimum Building Life-Cycle Cost Design Criteria,Ⅰ:Methodology andⅡ:Applications.ASCE,Journal of Structural Engineering,2001,127(3):330-346
6邓小刚．多层钢筋混凝土框架房屋的震害预测方法．工程抗震，1993(1)：28—33
2李刚，程耿东．基于性能的结构抗震设计——理论、方法与应用．北京：科学出版社，2004
3郭仕群．使用偏心支撑减小不规则高层建筑的扭转振动效应．地震工程与工程振动，2005，25(3)：76—80
4季克和，董军．隅撑支撑钢框架地震时程分析//刘伟庆，凌祥，张大长．力学与工程．北京：知识产权出版社，2006：103—108
5 Wen Y K,Kang Y J.Minimum Building Life-Cycle Cost Design Criteria,Ⅰ:Methodology andⅡ:Applications.ASCE,Journal of Structural Engineering,2001,127(3):330-346
6邓小刚．多层钢筋混凝土框架房屋的震害预测方法．工程抗震，1993(1)：28—33
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