大跨度储煤棚网架结构分析
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摘要
为研究大跨度储煤棚网架结构的受力特性,以南阳热电2×210 MW机组储煤棚工程为背景,基于实测数据和ANSYS有限元软件的APDL参数化建模语言,建立了储煤棚网架结构模型。针对不同工况的荷载组合对结构进行了静力分析,研究总结了储煤棚网架结构在各种荷载工况下的应力应变特征。计算结果表明:恢复重建的网架结构在各种工况下的应力均满足我国规范要求,网架挠度的最大值是在最不利荷载组合作用下产生的,其值小于规范规定的挠度值。
In order to study the mechanical feature of the large-span coal storage shed structure,this paper takes the coal storage shed project of Nanyang Thermal Power 2 × 210 MW unit as the background. Based on the measured data and the APDL parametric modeling language of ANSYS finite element software,the structural model is established. Static analysis is carried out for the structure under different load conditions,and the stress and strain characteristics of the grid structure of coal storage shed under various load conditions are summarized. The numerical result indicates that the stress of the restored and reconstructed grid structure under various working conditions meets the requirements of Chinese specification. The maximum deflection of the grid produced under the most unfavorable load combination is less than the deflection value specified in the specification.
In order to study the mechanical feature of the large-span coal storage shed structure,this paper takes the coal storage shed project of Nanyang Thermal Power 2 × 210 MW unit as the background. Based on the measured data and the APDL parametric modeling language of ANSYS finite element software,the structural model is established. Static analysis is carried out for the structure under different load conditions,and the stress and strain characteristics of the grid structure of coal storage shed under various load conditions are summarized. The numerical result indicates that the stress of the restored and reconstructed grid structure under various working conditions meets the requirements of Chinese specification. The maximum deflection of the grid produced under the most unfavorable load combination is less than the deflection value specified in the specification.
引文
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[4]刘锡良.中国空间网格结构三十年的发展[J].工业建筑,2013,43(5):103-107.
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[6]刘培祥,陈宏.某超大跨度干煤棚结构设计与研究[A].清华大学.第14届中国钢结构协会结构稳定与疲劳分会学术研讨会论文集[C]. 2014.
[7]齐月芹,李皓玉.大跨度干煤棚网壳结构风荷载试验研究[J].空间结构,2010(4):55-59.
[8]黄鹏,兰志昆,顾明.干煤棚柱面网壳结构多参数风荷载试验研究[J].建筑结构,2015(17):62,92-98.
[2] Wang J,Hua G,Ren X,et al. Global dynamic collapse analysis of single-layer cylindrical reticulated shell in greenhouse under disaster wind loads[J]. Transactions of the Chinese Society of Agricultural Engineering,2017,33(9):195-203.
[3] Shan Z. Dynamic behaviour and seismic design method of a single-layer reticulated shell with semi-rigid joints[J]. ThinWalled Structures,2017(119):544-557.
[4]刘锡良.中国空间网格结构三十年的发展[J].工业建筑,2013,43(5):103-107.
[5]罗尧治,吴玄成,沈雁彬,等.干煤棚网壳结构使用现状与缺陷分析[J].工业建筑,2005(5):88-91.
[6]刘培祥,陈宏.某超大跨度干煤棚结构设计与研究[A].清华大学.第14届中国钢结构协会结构稳定与疲劳分会学术研讨会论文集[C]. 2014.
[7]齐月芹,李皓玉.大跨度干煤棚网壳结构风荷载试验研究[J].空间结构,2010(4):55-59.
[8]黄鹏,兰志昆,顾明.干煤棚柱面网壳结构多参数风荷载试验研究[J].建筑结构,2015(17):62,92-98.