顶部带水平伸臂的框架-筒体结构连续化分析
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摘要
利用能量原理和高层结构的连续化分析方法,对顶部带有水平伸臂构件的框架-筒体结构进行了分析,不仅考虑了筒体、水平伸臂而且计入了楼面梁和腹板框架梁、柱对结构内力和变形产生的影响;通过引入相对坐标、伸臂刚度特征值和框架-筒体刚度特征值,得出了结构在水平荷载作用下的侧移和内力计算的解析表达式.算例分析的结果表明:该方法与一般框架-剪力墙结构连续化计算方法得出的筒体内力是一致的,结构顶点侧移是相近的;与有限元分析得出的顶点侧移相差小于7%.
Using energy principles and continuum theory of highrise structures,frame-tube structure with horizontal outriggers was analyzed.The tube and horizontal outriggers,especially floor beams,perimeter frame beams and columns that effect structure mechanics performance were considered in this method.Through leading-in the relative coordinate,the outrigger stiffness characteristic value and the frame stiffness characteristic value,the analytic expressions for structure sidesway and internal force calculation under horizontal load action are gotten.Through analysis for calculation example using this method and continuum analysis method for frame-shear wall structure,the results show that the tube internal force is same;the structure top sidesway is close. The difference of example structure top sidesway gotten by this method and finite element method is less 7 %.
Using energy principles and continuum theory of highrise structures,frame-tube structure with horizontal outriggers was analyzed.The tube and horizontal outriggers,especially floor beams,perimeter frame beams and columns that effect structure mechanics performance were considered in this method.Through leading-in the relative coordinate,the outrigger stiffness characteristic value and the frame stiffness characteristic value,the analytic expressions for structure sidesway and internal force calculation under horizontal load action are gotten.Through analysis for calculation example using this method and continuum analysis method for frame-shear wall structure,the results show that the tube internal force is same;the structure top sidesway is close. The difference of example structure top sidesway gotten by this method and finite element method is less 7 %.
引文
[1]徐培福.复杂高层建筑结构设计[M].北京:中国建筑工业出版社,2005.
[2]易方民,高小旺,王巍,等.水平加强层在超高层钢结构中的应用研究[J].建筑科学,2001,17(1):15-20.
[3]Coull A,Lau W H O.Analysis of multioutriggerbraced structures[J].J Struct Engrg,1989(6):1 811-1 815.
[4]张仲先,周春圣,夏凯,等.设置多道加强层的框-筒结构侧移分析方法[J].武汉理工大学学报,2006,28(4):52-55.
[5]张建勋.带刚臂超高层结构的力学性能分析[J].山东建筑工程学院学报,2000,15(4):29-33.
[6]Nollet M J,Smith B S.Stiffened-story wall-framebuilding structure[J].Computers&Structures,1998,66(2):225-240.
[7]苏原,李黎,陈传尧,等.结构计算模型与结构设计[J].建筑科学,2005,21(1):70-74.
[8]周春圣,张仲先,夏凯,等.顶部设置加强层的框-筒结构应变能分析[J].武汉理工大学学报,2006,28(3):86-88.
[9]Tauchert T R.Energy principles in structural me-chanics[M].New York:McGraw-Hill,1974.
[10]方鄂华.多层及高层建筑结构设计[M].北京:地震出版社,1992.
[2]易方民,高小旺,王巍,等.水平加强层在超高层钢结构中的应用研究[J].建筑科学,2001,17(1):15-20.
[3]Coull A,Lau W H O.Analysis of multioutriggerbraced structures[J].J Struct Engrg,1989(6):1 811-1 815.
[4]张仲先,周春圣,夏凯,等.设置多道加强层的框-筒结构侧移分析方法[J].武汉理工大学学报,2006,28(4):52-55.
[5]张建勋.带刚臂超高层结构的力学性能分析[J].山东建筑工程学院学报,2000,15(4):29-33.
[6]Nollet M J,Smith B S.Stiffened-story wall-framebuilding structure[J].Computers&Structures,1998,66(2):225-240.
[7]苏原,李黎,陈传尧,等.结构计算模型与结构设计[J].建筑科学,2005,21(1):70-74.
[8]周春圣,张仲先,夏凯,等.顶部设置加强层的框-筒结构应变能分析[J].武汉理工大学学报,2006,28(3):86-88.
[9]Tauchert T R.Energy principles in structural me-chanics[M].New York:McGraw-Hill,1974.
[10]方鄂华.多层及高层建筑结构设计[M].北京:地震出版社,1992.
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