%0 Journal Article
%T 多重四边环索-张弦穹顶屋盖索力张拉方案比选<br>Comparativeanalysis on cable tensioning scheme of multiple square loops-string dome
%A 张
%A 超
%A 余
%A 立
%A 许
%A 莉
%A 林
%A 威
%J 福州大学学报(自然科学版)
%D 2017
%R 10.7631/issn.1000-2243.2017.02.151
%X 以首个多重四边环索-张弦穹顶屋盖工程——福州海峡奥林匹克体育中心体育馆为工程背景，对不同索力张拉方案进行比较研究. 建立三维有限元分析模型，采用降温法模拟索力张拉施工过程，对比分析不同索力张拉方案下屋盖结构的响应变化规律. 分析结果表明，在张拉过程中，多重四边环索-张弦穹顶屋盖的内力和变形受索力张拉顺序影响较大，但是，最终受力及变形状态相差不大. 针对张拉过程而言，方案1屋盖竖向变形、网格梁内力均比方案2更加合理. 因此，考虑施工中屋盖结构的合理性，建议采用“外环索-中环斜索-内环斜索-张弦索”的索力张拉顺序.<br>Multiple square loops-string dome (MSLSD) has quite various mechanics under different cable tensioning sequences. In order to optimize the cable tensioning sequences，the first MSLSD project that is Fuzhou Olympics Gymnasium was taken as research background. And the investigations are carried on to proposed two different cables tensioning schemes. Based on the 3D finite-element model，the internal forces and deformations of the MSLSD under different cables tensioning schemes are discussed. The process of cable tensions is simulated by cooling method. The analysis results shows that the roof internal forces and deformation during cable tensioning stage for two schemes are quite different，although the final results are nearly the same. During the tensioning process，roof deformation and internal force of grillage girder are obviously less for the 1st tensioning schemes. Therefore，considering the safety during construction，the 1st tensioning schemes are recommended，whose sequence is “external cables square loop-middle cables square loop-internal cables square loop-cables of string beam”
%K 多重四边环索 张弦梁 穹顶 索力张拉&lt
%K br&gt
%K multiple square loops (MSL) beam string dome cables tensioning
%U http://xbzrb.fzu.edu.cn/ch/reader/view_abstract.aspx?file_no=201702001&flag=1