多波多跨柱面网壳结构受力特性及简化分析方法
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摘要
工程实践中可以把单波单跨的柱面网壳作为一个结构单体,在横向和纵向扩展形成单波多跨、多波单跨以及多波多跨的整体矩形平面屋盖系统。通过研究位于多波多跨柱面网壳4个不同区域的网壳单体,发现相同区域内的单体受力性能非常接近。并且依据不同区域网壳单体的约束情况建立相应的简化模型,通过分析比较简化模型和整体模型中相应单体的受力特性,可以得到二者的受力性能也比较接近。同时应用简化的单体模型考虑网壳杆件的截面选择和张弦柱面网壳中预应力设计的问题,也都能得到比较好的效果。
In engineering practices,the mono-wave and mono-span cylindrical lattice shell could be taken as a monomer,which can combine with others to extend to be multi-wave and multi-span cylindrical lattice shells.The mechanical properties of shell monomer in four different parts of the shell integer were studied.It is found that the monomer in the same part holds the similar properties.And four simplified analysis models were created according to the different boundary conditions for different parts.Comparing the properties of simplified models with shell monomers,the two models have the similar properties in the same part.Meanwhile the simplified model could be used to analyze the selection of cross sections for lattice shell bars and design of the pre-stress level for cables,which both could get satisfied results.
In engineering practices,the mono-wave and mono-span cylindrical lattice shell could be taken as a monomer,which can combine with others to extend to be multi-wave and multi-span cylindrical lattice shells.The mechanical properties of shell monomer in four different parts of the shell integer were studied.It is found that the monomer in the same part holds the similar properties.And four simplified analysis models were created according to the different boundary conditions for different parts.Comparing the properties of simplified models with shell monomers,the two models have the similar properties in the same part.Meanwhile the simplified model could be used to analyze the selection of cross sections for lattice shell bars and design of the pre-stress level for cables,which both could get satisfied results.
引文
[1]沈世钊,陈昕,张峰,等.单层柱面网壳的稳定性(上)[J].空间结构,1998,4(2):17-28.
[2]薛素铎,曹资,王健宁.单层柱面网壳弹塑性地震反应特征[J].地震工程与工程振动,2002,22(1):56-60.
[3]董石麟,庞礴,袁行飞.弦支柱面网壳的型体及受力特性研究[C]//第三届结构工程新进展国际论坛文集.北京:中国建筑工业出版社,2009.
[4]王秀丽,徐英雷,张宪江.新型拉索——单层柱面网壳结构性能初探[C]//第七届全国现代结构工程学术研讨会,2007:367-373.
[5]董石麟,刘传佳,袁行飞.张弦柱面网壳的形体及受力特性研究[C]//首届全国建筑索结构技术交流会论文集,2010:13-21.
[6]白正仙,刘锡良,李义生.新型空间结构形式——张弦梁结构[J].空间结构,2001,7(2):33-38.
[2]薛素铎,曹资,王健宁.单层柱面网壳弹塑性地震反应特征[J].地震工程与工程振动,2002,22(1):56-60.
[3]董石麟,庞礴,袁行飞.弦支柱面网壳的型体及受力特性研究[C]//第三届结构工程新进展国际论坛文集.北京:中国建筑工业出版社,2009.
[4]王秀丽,徐英雷,张宪江.新型拉索——单层柱面网壳结构性能初探[C]//第七届全国现代结构工程学术研讨会,2007:367-373.
[5]董石麟,刘传佳,袁行飞.张弦柱面网壳的形体及受力特性研究[C]//首届全国建筑索结构技术交流会论文集,2010:13-21.
[6]白正仙,刘锡良,李义生.新型空间结构形式——张弦梁结构[J].空间结构,2001,7(2):33-38.
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