某大跨度干煤棚网壳结构设计及优化研究
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摘要
以某大跨度干煤棚网壳结构为研究对象,在柱面双层网壳结构方案的基础上,提出采用折柱面双层网壳结构的优化方案,通过建立多个计算模型,分析对比不同折线坡度、网壳厚度对结构承载力和用钢量的影响,确定最优的结构几何参数。研究结果表明,在相同用钢量的情况下,折线坡度为9.16%、网壳厚度为4.4m左右时,折柱面双层网壳结构极限承载力比柱面双层网壳结构提升27.3%。
The design and optimization scheme of a large-span dry-coal shed reticulated shell structure were studied. On the basis of the structural scheme of cylindrical double-layer reticulated shell structure,the optimization scheme of the folding cylindrical double-layer reticulated shell structure was proposed. Through the analysis of a plurality of calculation models,the optimal geometric parameters were obtained after researching and comparing the influences of different slopes of folding lines and reticulated shell thickness on the structural bearing capacity and the amount of steel. The research results show that in the case of the same amount of steel,the ultimate bearing capacity of the folding cylindrical double-layer reticulated shell structure whose folding line slope is 9.16% and the shell thickness is about 4.4 m can be increased 27.3% compared with the double-layer cylindrical reticulated shell structure.
The design and optimization scheme of a large-span dry-coal shed reticulated shell structure were studied. On the basis of the structural scheme of cylindrical double-layer reticulated shell structure,the optimization scheme of the folding cylindrical double-layer reticulated shell structure was proposed. Through the analysis of a plurality of calculation models,the optimal geometric parameters were obtained after researching and comparing the influences of different slopes of folding lines and reticulated shell thickness on the structural bearing capacity and the amount of steel. The research results show that in the case of the same amount of steel,the ultimate bearing capacity of the folding cylindrical double-layer reticulated shell structure whose folding line slope is 9.16% and the shell thickness is about 4.4 m can be increased 27.3% compared with the double-layer cylindrical reticulated shell structure.
引文
[1]杜文风,张慧.空间结构[M].北京:中国电力出版社,2008.
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[4]王圣翔,杜文风,赵军.南阳玉器超市网壳结构设计与稳定性分析[J].建筑技术,2010,41(7):635-637.
[5]杜文风,高博青,董石麟.网壳结构寿命周期总费用的计算方法研究[J].土木工程学报,2011,44(6):127-137.
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[10]郭云,陈辉,于海凤.某热电厂大跨度干煤棚结构设计与分析[J].建筑结构,2015,45(17):49-53.
[2]罗尧治.跨度储煤结构——设计与施工[M].北京:中国电力出版社,2007.
[3]杜文风,喻福东.沁阳市体育馆椭圆抛物面弦支穹顶稳定性研究[J].建筑结构,2013,43(22):39-42.
[4]王圣翔,杜文风,赵军.南阳玉器超市网壳结构设计与稳定性分析[J].建筑技术,2010,41(7):635-637.
[5]杜文风,高博青,董石麟.网壳结构寿命周期总费用的计算方法研究[J].土木工程学报,2011,44(6):127-137.
[6]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.
[7]建筑结构荷载规范:GB 50009—2012[S].北京:中国建筑工业出版社,2012.
[8]建筑抗震设计规范:GB 50011—2010[S].北京:中国建筑工业出版社,2010.
[9]王新敏.ANSYS工程结构数值分析[M].北京:人民交通出版社,2007.
[10]郭云,陈辉,于海凤.某热电厂大跨度干煤棚结构设计与分析[J].建筑结构,2015,45(17):49-53.