绵竹体育馆预应力拱桁架设计研究
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路江龙,张谨,常瀚,向红(苏州工业园区设计研究院股份有限公司, 苏州 215021)[摘要]四川绵竹体育馆屋盖结构采用了形式较为新颖的下弦管内张拉预应力拱桁架体系。以此为研究对象,采用不同计算模型,选取不同支座类型、高跨比、预应力度这三个主要参数进行结构体系的分析对比,研究得出各关键参数的合理取值范围;并对相同承载力控制指标下预应力体系与非预应力体系进行了静力分析及静力弹塑性全过程分析,研究预应力体系的有效性,可为类似工程提供一定参考。[关键词]体内张拉; 高跨比; 预应力度; 静力弹塑性中图分类号:TU394,TU393.3文献标识码:A文章编号:1002-848X(2013)14-0025-04Research on prestressed arch truss system design of Mianzhu GymnasiumLu Jianglong, Zhang Jin, Chang Han, Xiang Hong(Suzhou Industrial Park Design & Research Institute Co., Ltd., Suzhou 215021, China)Abstract: Arch truss system with prestressed bottom chord is applied in roof structure of Mianzhu Gymnasium in Sichuan province. Calculation models with different support types, height-span ratio and prestressed degree were compared to research the reasonable value distribution of main parameters. Static analysis and static elastic-plastic analysis were applied in prestressed system and non-prestressed system under the same control index of bearing capacity. Effectiveness of prestressed system was researched for reference.Keywords: interior tension; height-span ratio; prestressed degree; static elastic-plastic作者简介:路江龙,高级工程师,一级注册结构工程师,英联邦特许结构工程师(MIStructE,CEng),Email:lujianglong@sipdri.com。参考文献[1]董石麟,罗尧治,赵阳,等. 新型空间结构分析、设计与施工[M]. 北京: 人民交通出版社,2006.[2]黄季阳,聂悦,王树,等.中关村国家自主创新展示中心折线形布索预应力钢桁架结构设计研究[J].建筑结构,2012,42(1):49-54.[3]葛家琪,王明珠,管志忠,等.体内预应力钢管桁架结构的分析与设计[C]//中国预应力技术第九届后张预应力学术交流会论文集.2006:241-246.[4]祖青,李彬双.体内预应力钢屋架张拉成型及内力分布研究[J].工业建筑,2008,38(S1):535-538.[5]张卉,司斌.某体育馆钢结构屋面稳定性分析[J].建筑结构,2012,42(S1):669-670.[6]唐柏鉴,李一松,裴波.空间桁架梁的整体稳定研究[C]//第五届全国现代结构工程学术研讨会论文集.2005:599-601.