张拉索膜结构预应力施工模拟分析
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摘要
为了克服目前张拉索膜结构施工过程中通常采用的分批张拉和反复调整的问题,采用主应力-主应变准则来判别膜材受力状态并利用修改本构矩阵的方法处理褶皱或松弛单元,提出先逆向放松后正向张拉的两阶段施工模拟方法,获得一次张拉成形的施工张拉值。通过对威海体育场看台挑篷索膜结构施工过程的数值模拟,结果表明,此种方法能够获得使结构整体一次张拉成形的施工张拉值,对大型张拉索膜结构具有较大的实用性。
In order to overcome active tensioning in batches and adjusting repeatedly adopted in practical construction process of tensioned membrane structures, two stages simulation strategy which combined releasing reversely and tensioning positively is proposed. Principal stress and strain criterion is used to judge stress state. Modified constitutive matrix is used for dealing with wrinkling or slackness elements. Numerical simulation analysis on construction process of cable-membrane structure of stadium canopy in Weihai is carried out,the results show that the method can get construction tensioning value of integral one-time tension and has great advantages for large-span tension membrane structures.
In order to overcome active tensioning in batches and adjusting repeatedly adopted in practical construction process of tensioned membrane structures, two stages simulation strategy which combined releasing reversely and tensioning positively is proposed. Principal stress and strain criterion is used to judge stress state. Modified constitutive matrix is used for dealing with wrinkling or slackness elements. Numerical simulation analysis on construction process of cable-membrane structure of stadium canopy in Weihai is carried out,the results show that the method can get construction tensioning value of integral one-time tension and has great advantages for large-span tension membrane structures.
引文
[1]刘雄锋,罗向宇,张晗旭.宜兴市体育中心体育场膜结构屋盖的设计与施工[J].工业建筑,2003(增刊).
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[4]李波.张拉索膜结构施工过程分析研究[D].北京:北京交通大学,2008.
[5]Masao Saitoh.Proposal of reversed progress technique for tension structures and its application[C]//IASS Symposiu,2001.
[6]张文英,李中立.深圳欢乐谷中心剧场膜结构穹顶[J].空间结构,2000,6(1):3-8.
[7]Masao Saitoh.The Analysis,Design,and construction of a suspension roof for TSUKUBA EXPO’85[C]//Proc.IASS Symp.Osaka.1986.
[8]谭锋.张拉薄膜结构的褶皱和动力分析[D].北京:北京交通大学,2007.
[9]李波.张拉索膜结构施工过程分析研究[D].北京:北京交通大学,2008.
[2]唐建民,沈祖炎.圆形平面轴对称索穹顶结构施工过程跟踪计算[J].土木工程学报,1998,31(5):24-32.
[3]袁行飞,董石麟.索穹顶结构的理论分析和实验研究[D].杭州:浙江大学,2000.
[4]李波.张拉索膜结构施工过程分析研究[D].北京:北京交通大学,2008.
[5]Masao Saitoh.Proposal of reversed progress technique for tension structures and its application[C]//IASS Symposiu,2001.
[6]张文英,李中立.深圳欢乐谷中心剧场膜结构穹顶[J].空间结构,2000,6(1):3-8.
[7]Masao Saitoh.The Analysis,Design,and construction of a suspension roof for TSUKUBA EXPO’85[C]//Proc.IASS Symp.Osaka.1986.
[8]谭锋.张拉薄膜结构的褶皱和动力分析[D].北京:北京交通大学,2007.
[9]李波.张拉索膜结构施工过程分析研究[D].北京:北京交通大学,2008.