天津理工大学体育馆复合式索穹顶结构分析与设计
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摘要
天津理工大学体育馆屋盖结构平面投影为椭圆形,长轴为102m、短轴为82m,周圈为短轴高、长轴低的马鞍形双曲线。屋盖结构采用外圈Levy式、内圈Geiger式的新型复合式索穹顶结构。采用力密度法确定了拉索的初始预应力模态,并根据结构的荷载和受力情况确定了最终预应力取值。分析了支座刚度以及屋面支承系统对结构静力性能的影响,最终确定采用边界为三向铰接并考虑屋面支承系统作用的模型作为计算模型。采用时程分析法计算了索穹顶结构在地震作用下的反应,结果表明地震参与组合对索穹顶结构的计算不起控制作用。
The gymnasium in Tianjin University of Technology is elliptical in plan with a long axis of 102 mand short axis of 82 m.The boundary is a saddle-shaped spatial curve whose vertex is on the short axis and lowest point on the long axis.A new hybrid-form cable dome structure with Levy form in the outmost part and Geiger form in the inner part is adopted.The force density method is used to obtain the initial force mode,and the actual pre-stress value is determined considering the load and boundary conditions.The influence of boundary stiffness and purlin system on the mechanical behavior of cable dome is analyzed.Then a calculation model is established with fixed boundary,accounting for the action of the purlin system.The time-history analysis is conducted to calculate the seismic response of the structure,and the results show that the earthquake action does not play a dominant role among all the load combinations.
The gymnasium in Tianjin University of Technology is elliptical in plan with a long axis of 102 mand short axis of 82 m.The boundary is a saddle-shaped spatial curve whose vertex is on the short axis and lowest point on the long axis.A new hybrid-form cable dome structure with Levy form in the outmost part and Geiger form in the inner part is adopted.The force density method is used to obtain the initial force mode,and the actual pre-stress value is determined considering the load and boundary conditions.The influence of boundary stiffness and purlin system on the mechanical behavior of cable dome is analyzed.Then a calculation model is established with fixed boundary,accounting for the action of the purlin system.The time-history analysis is conducted to calculate the seismic response of the structure,and the results show that the earthquake action does not play a dominant role among all the load combinations.
引文
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[14]陈志华,刘红波,周婷,等.空间钢结构APDL参数化计算与分析[M].北京:中国水利水电出版社,2009.CHEN Zhihua,LIU Hongbo,ZHOU Ting,et al.Calculation and analysis of space frame structures with APDL[M].Beijing:China Water Power Press,2009.(in Chinese)
[15]余玉洁,陈志华,王霄翔.拉索半精细化有限元模型及其敏感性分析[J].天津大学学报(自然科学版),2015,48(增刊):96-101.DOI:10.11784/tdxbz201505019.YU Yujie,CHEN Zhihua, WANG Xiaoxiang.Refined simplified finite element model of cable and its sensitivity analysis[J].Journal of Tianjin University(Science and Technology),2015,48(Suppl.):96-101.DOI:10.11784/tdxbz201505019.(in Chinese)
[16]中华人民共和国住房和城乡建设部.索结构技术规程:JGJ257—2012[S].北京:中国建筑工业出版社,2012.Ministry of Housing and Urban-Rural Development of the People’s Republic of China.Technology Specification for Cable Structures:JGJ 257—2012[S].Beijing:China Architecture&Building Press,2012.(in Chinese)
[17]中华人民共和国住房和城乡建设部.空间网格结构技术规程:JGJ 7—2010[S].北京:中国建筑工业出版社,2010.Ministry of Housing and Urban-Rural Development of the People’s Republic of China.Technology Specification for Space Frame Structures:JGJ 7—2010[S].Beijing:China Architecture&Building Press,2010.(in Chinese)
[2]韩芳冰,闫翔宇,陈志华,等.天津理工大学体育馆屋盖钢结构方案比选与分析[J].工业建筑,2015(增刊):461-466.HAN Fangbing,YAN Xiangyu,CHEN Zhihua,et al.Comparison and analysis of steel structure scheme for gymnasium roof of Tianjin University of Technology[J].Industrial Construction,2015(Suppl.):461-466.(in Chinese)
[3]中华人民共和国住房和城乡建设部.建筑结构荷载规范:GB50009—2012[S].北京:中国建筑工业出版社,2012.Ministry of Housing and Urban-Rural Development of the People’s Republic of China.Load Code for the Design of Building Structures:GB 50009—2012[S].Beijing:China Architecture&Building Press,2012.(in Chinese)
[4]中华人民共和国住房和城乡建设部.建筑抗震设计规范:GB50011—2010[S].北京:中国建筑工业出版社,2010.Ministry of Housing and Urban-Rural Development of the People’s Republic of China.Code for Seismic Design of Buildings:GB 50011—2010[S].Beijing:China Architecture&Building Press,2010.(in Chinese)
[5] GEIGER D H.Roof structure:USA 4736553[P].1988-04-12.
[6] GEIGER D H,STEFANIUK A,CHEN D.The design construction of two cable domes for the Korean Olympics[C]//Proceedings of the IASS Symposium on Shells,Membranes and Space Frames.Osaka,Japan,1986:265-272.
[7] GOSSEN P,CHEN D,MIKHLIN E.The first rigidly clad“tensegrity”type dome,the crown coliseum,Fayetteville,North Carolina[C]//IASS-ICSS 1998:Spatial Structures in New and Renovation Projects of Buildings and Construction:Theory,Investigations,Design,Erection.Moscow,Russia,1998:477-484.
[8]何孜孜,陈忠辉,胡正平.中国(太原)煤炭交易中心索穹顶张拉成型与监测[J].施工技术,2011,40(10):27-29,38.HE Zizi,CHEN Zhonghui,HU Zhengping.Pre-tensioning technique and monitoring of cable dome in China(Taiyuan)Coal Trading Center[J].Construction Technology,2011,40(10):27-29,38.(in Chinese)
[9]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.DOI:10.14006/j.jzjgxb.2012.04.003.ZHANG Guojun,GE Jiaqi,WANG Shu,et al.Design and research on cable dome structural system of the National Fitness Center in Ejin Horo Banner,Inner Mongolia[J].Journal of Building Structures,2012,33(4):12-22.DOI:10.14006/j.jzjgxb.2012.04.003.(in Chinese)
[10]陈联盟.Kiewitt型索穹顶结构的理论分析和试验研究[D].杭州:浙江大学,2005.CHEN Lianmeng.Theoretical and experimental research of Kiewitt domes[D].Hangzhou:Zhejiang University,2005.(in Chinese)
[11]詹伟东.葵花型索穹顶结构的理论分析和试验研究[D].杭州:浙江大学,2004.ZHAN Weidong.Theoretical and experimental research of sunflower-shaped cable dome[D].Hangzhou:Zhejiang University,2004.(in Chinese)
[12] SCHEK H J.The force density method for form finding and computation of general networks[J].Computer Methods in Applied Mechanics and Engineering,1974,3(1):115-134.DOI:10.1016/0045-7825(74)90045-0.
[13]陈志华,王小盾,刘锡良.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.DOI:10.14006/j.jzjgxb.1999.05.004.CHEN Zhihua,WANG Xiaodun,LIU Xiliang.Form finding of tensegrity structure by force density method[J].Journal of Building Structures,1999,20(5):29-35.DOI:10.14006/j.jzjgxb.1999.05.004.(in Chinese)
[14]陈志华,刘红波,周婷,等.空间钢结构APDL参数化计算与分析[M].北京:中国水利水电出版社,2009.CHEN Zhihua,LIU Hongbo,ZHOU Ting,et al.Calculation and analysis of space frame structures with APDL[M].Beijing:China Water Power Press,2009.(in Chinese)
[15]余玉洁,陈志华,王霄翔.拉索半精细化有限元模型及其敏感性分析[J].天津大学学报(自然科学版),2015,48(增刊):96-101.DOI:10.11784/tdxbz201505019.YU Yujie,CHEN Zhihua, WANG Xiaoxiang.Refined simplified finite element model of cable and its sensitivity analysis[J].Journal of Tianjin University(Science and Technology),2015,48(Suppl.):96-101.DOI:10.11784/tdxbz201505019.(in Chinese)
[16]中华人民共和国住房和城乡建设部.索结构技术规程:JGJ257—2012[S].北京:中国建筑工业出版社,2012.Ministry of Housing and Urban-Rural Development of the People’s Republic of China.Technology Specification for Cable Structures:JGJ 257—2012[S].Beijing:China Architecture&Building Press,2012.(in Chinese)
[17]中华人民共和国住房和城乡建设部.空间网格结构技术规程:JGJ 7—2010[S].北京:中国建筑工业出版社,2010.Ministry of Housing and Urban-Rural Development of the People’s Republic of China.Technology Specification for Space Frame Structures:JGJ 7—2010[S].Beijing:China Architecture&Building Press,2010.(in Chinese)
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