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(中國建筑西南設(shè)計(jì)研究院有限公司， 成都 610041)
［摘要］ 介紹了青少年戶外培訓(xùn)基地綜合體育館的工程概況，闡述了跨度為105m的弦支穹頂結(jié)構(gòu)體系優(yōu)化設(shè)計(jì)及選定過程。將初設(shè)方案和施工圖優(yōu)化方案進(jìn)行了對比分析研究，對比內(nèi)容包括屈曲模態(tài)、幾何非線性屈曲、雙非線性屈曲等。除此之外進(jìn)行了整體抗連續(xù)倒塌驗(yàn)算。研究成果表明將外側(cè)網(wǎng)架與單層網(wǎng)殼弦支穹頂連接成整體，并通過懸挑桁架和環(huán)向桁架進(jìn)行整體剛度加強(qiáng)后，結(jié)構(gòu)整體穩(wěn)定性得到較大提高，有效避免了單層網(wǎng)殼轉(zhuǎn)折點(diǎn)受力集中，同時(shí)結(jié)構(gòu)不會(huì)發(fā)生連續(xù)倒塌破壞，并節(jié)約了預(yù)應(yīng)力索用量、支座數(shù)量以及整體用鋼量，經(jīng)濟(jì)指標(biāo)更為良好。
［關(guān)鍵詞］青少年戶外培訓(xùn)基地；綜合體育館；弦支穹頂結(jié)構(gòu)；屈曲分析；穩(wěn)定性；抗連續(xù)倒塌
中圖分類號：TU394 文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2021)22-0056-05
Optimal design on complex gymnasium’s roof of Teenagers’ Training Base
HE Yunming, XU Liwen, LI Jinzhe, GUO Chi, DENG Kaiguo, FENG Zhongwei
(China Southwest Architectural Design and Research Institute Co., Ltd., Chengdu 610041， China)
Abstract: The project overview of complex gymnasium of Teenagers’ Training Base was summarized, the optimal design and selective process on structure system of suspend-dome spanning 105 meters. The comparative analysis between initial design and optimized construction drawing, including buckling mode, geometrical nonlinear buckling, geometrical-material nonlinear buckling and so on. Besides, the overall anti-continuous collapse check was carried out. The result shows that the stability of structure can be enhanced by integrating outer space truss with suspen-dome of single-layer reticulated shell into a whole, and strengthening the overall rigidity through cantilever truss and hoop truss. According to this method, it effectively avoids the concentrated stress on hinge of single-layer reticulated shell, prevents progressive collapse and damage, save prestressed cables, bearings and steel used, which is more economical.
Keywords:Teenagers’ Training Base； complex gymnasium； suspend-dome structure； buckling analysis； stability； anti-continuous collapse
作者簡介：何云明，碩士，高級工程師，一級注冊結(jié)構(gòu)工程師，Email：11431937@qq.com。
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