- 摘 要
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(1 河南大學(xué)鋼與空間結(jié)構(gòu)研究所， 開封 475004； 2 河南天元網(wǎng)架工程有限公司， 開封 475004)
［摘要］以某大跨度干煤棚網(wǎng)殼結(jié)構(gòu)為研究對象，在柱面雙層網(wǎng)殼結(jié)構(gòu)方案的基礎(chǔ)上，提出采用折柱面雙層網(wǎng)殼結(jié)構(gòu)的優(yōu)化方案，通過建立多個計算模型，分析對比不同折線坡度、網(wǎng)殼厚度對結(jié)構(gòu)承載力和用鋼量的影響，確定最優(yōu)的結(jié)構(gòu)幾何參數(shù)。研究結(jié)果表明，在相同用鋼量的情況下，折線坡度為9.16%、網(wǎng)殼厚度為4.4m左右時，折柱面雙層網(wǎng)殼結(jié)構(gòu)極限承載力比柱面雙層網(wǎng)殼結(jié)構(gòu)提升27.3%。
［關(guān)鍵詞］大跨度干煤棚； 折柱面雙層網(wǎng)殼結(jié)構(gòu)； 折線坡度； 網(wǎng)殼厚度； 優(yōu)化分析； 極限承載力
中圖分類號：TU391文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2019)02-0012-04
Study on design and optimization of a large-span dry-coal shed reticulated shell structure
Zhu Liming1, Du Wenfeng1, Wang Longxuan1, He Pengfei1, Liu Zhijian2, Han Fang2
(1 Institute of Steel ＆ Space Structure， Henan University， Kaifeng 475004， China;2 Henan Tianyuan Space Frame Engineering Co．， Ltd．， Kaifeng 475004， China)
Abstract: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 4.4m can be increased 27.3% compared with the double-layer cylindrical reticulated shell structure.
Keywords:large-span dry-coal shed; folding cylindrical double-layer reticulated shell structure; folding line slope; shell thickness; optimal analysis; ultimate bearing capacity
*國家自然科學(xué)基金資助項目（U1704141）。
通訊作者：杜文風(fēng)，博士，教授，Email:dwf@henu.edu.cn。
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