椭圆形盖格式索穹顶体系优化及初始预应力分析
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摘要
虽然盖格式索穹顶构造简单、施工方便,在国内外圆形平面场馆中均取得了成功的应用,但在椭圆形平面场馆中的应用较少。结合力密度法及整体可行预应力概念,以天津理工大学索穹顶前期设计为背景,探索了椭圆形盖格式索穹顶初始预应力的确定方法,通过对三种不同索杆布置形式的初始预应力值的对比,可知:边界不等高且环索随边界坡度变化的盖格式索穹顶通过采取合理的改进措施后,更能适用于椭圆形屋面。
Geiger cable domes have been successfully applied in stadiums with circular plane both at home and abroad,but hardly used in stadiums with oval plane. In this paper,combined with the concept of the force density method and the integral possible prestress,and based on the pre-design of the cable dome in Tianjin University of Technology,the calculation methed for initial prestress of oval Geiger cable domes was explored,through the comparison of the initial prestress of structures with three different kinds of arranging forms of cables and bars,it was concluded that Geiger cable domes with unequal height of the boundary and hoop cables changing with the slope of the boundry were more suitable for oval roofs through some improving measures.
Geiger cable domes have been successfully applied in stadiums with circular plane both at home and abroad,but hardly used in stadiums with oval plane. In this paper,combined with the concept of the force density method and the integral possible prestress,and based on the pre-design of the cable dome in Tianjin University of Technology,the calculation methed for initial prestress of oval Geiger cable domes was explored,through the comparison of the initial prestress of structures with three different kinds of arranging forms of cables and bars,it was concluded that Geiger cable domes with unequal height of the boundary and hoop cables changing with the slope of the boundry were more suitable for oval roofs through some improving measures.
引文
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[14]宋慧敏,惠颖.力密度法在索穹顶形态确定中的应用[J].钢结构,2008,23(9):26-29.
[2]Pellegrino S.A Class of Tensegrity Domes[J].International Journal of Space Structures,1992,7(2):127-142.
[3]李志强.索穹顶结构性能研究与体系改良[D].杭州:浙江大学,2007.
[4]周富生,马忠忠.浅析索穹顶结构体系[A]//土木建筑学术文库.2011.
[5]王春江,李向民,许清风,等.双列索结构的流固耦合分析[J].天津大学学报,2014,45(8):57-63.
[6]张国军,葛家琪,王树,等.内蒙古伊旗全民健身体育中心索穹顶结构体系设计研究[J].建筑结构学报,2012,33(4):12-22.
[7]王永,龙谋识.索穹顶结构的研究现状与展望[J].金华职业技术学院学报,2008,7(6):25-29.
[8]郭远翔,林亮洪.盖格体系索穹顶静力特性分析及体系改进[J].科学技术与工程,2011,11(31):7816-7820.
[9]张小钦,张莉,张其林.索穹顶结构的初始形状确定[J].结构工程师,2002(3):8-11.
[10]Gossen P,Chen D,Mikhlin E.The First Rigidly Clad“Tensegrity”Type Dome,The Crown Coliseum,Fayetteville,North Carolina[J].Spatial Structures in New and Renovation Projects of Buildings and Construction:Theory,Investigations,Design,Erection,1998:477-484.
[11]余巧萍.索穹顶结构形态确定的研究[D].南京:南京理工大学,2009.
[12]陈志华,王小盾.张拉整体结构的力密度法找形分析[J].建筑结构学报,1999,20(5):29-35.
[13]袁行飞,董石麟.索穹顶结构整体可行预应力概念及其应用[J].土木工程学报,2001,34(2):33-37.
[14]宋慧敏,惠颖.力密度法在索穹顶形态确定中的应用[J].钢结构,2008,23(9):26-29.