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（1 華東建筑設(shè)計(jì)研究院有限公司， 上海 200041； 2 上海建筑設(shè)計(jì)研究院有限公司， 上海 200041；3 同濟(jì)大學(xué)建筑工程系， 上海 200092）

［摘要］針對(duì)鋁合金單層網(wǎng)殼結(jié)構(gòu)，采用有限元分析方法研究了外荷載作用下屋面板的受力模式、應(yīng)力構(gòu)成以及蒙皮效應(yīng)對(duì)網(wǎng)殼整體穩(wěn)定性和經(jīng)濟(jì)性的影響。研究表明：屋面板在提供蒙皮效應(yīng)作用時(shí)處于低應(yīng)力狀態(tài)且以受拉為主； 考慮蒙皮效應(yīng)后鋁合金單層網(wǎng)殼的整體穩(wěn)定極限承載力可提高5%～28%，提高幅度隨矢跨比的增大而增大，隨跨度的增加而減?。?具體案例分析表明，考慮蒙皮效應(yīng)后主結(jié)構(gòu)構(gòu)件的材料用量可減少7%～10%。

［關(guān)鍵詞］鋁合金單層網(wǎng)殼； 蒙皮效應(yīng)； 受力模式； 穩(wěn)定承載力

中圖分類號(hào)：TU395文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)18-0034-05

Research on the diaphragm effect of roof panel of aluminum alloy single-layer reticulated shell

CUI Jiachun1, WU Yanzhen1, LI Yaming2, WANG Meng3

(1 East China Architectural Design & Research Institute Co., Ltd., Shanghai 200041, China; 2 Shanghai Institute of Architecture Design & Research Co.，Ltd．， Shanghai 200041， China;3 Department of Building Engineering, Tongji University, Shanghai 200092, China)

Abstract:Aiming at aluminum alloy single-layer reticulated shell structure, the influences of the bearing mode, stress composition and diaphragm effect of the roof panel under external load on the overall stability and economy of the reticulated shell were studied by using finite element analysis method. The results show that the roof panel is in a low stress state and mainly under tension when providing diaphragm effect; the overall stability ultimate bearing capacity of aluminum alloy single-layer reticulated shell can be increased by 5%～28% after considering the diaphragm effect, and the increase range increases with the increase of rise span ratio and decreases with the increase of span; the specific cases study shows that the material consumption of main structural members can be reduced by 7%～10% after considering diaphragm effect.

Keywords:aluminum alloy single-layer reticulated shell; diaphragm effect; bearing mode; stability bearing capacity

作者簡(jiǎn)介：崔家春，博士，正高級(jí)工程師，Email:jch_cui@163.com