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(上海建筑設(shè)計研究院有限公司, 上海 200041)
摘要: 某水世界樂園場館結(jié)構(gòu)設(shè)計中,外部采用大跨度鋼結(jié)構(gòu)外殼,與內(nèi)部混凝土結(jié)構(gòu)相脫離. 大跨度結(jié)構(gòu)分下部和上部兩部分,通過方案階段的深入比選,確定了實施的結(jié)構(gòu)體系為 Y 形柱支撐、以徑向桁架作為加勁肋的單層網(wǎng)殼體系;為保證該結(jié)構(gòu)方案的安全性、合理性和經(jīng)濟(jì)性,分別進(jìn)行了結(jié)構(gòu)的振型、應(yīng)力比、變形、穩(wěn)定性分析設(shè)計,并選取關(guān)鍵節(jié)點(diǎn)進(jìn)行彈塑性有限元分析. 分析結(jié)果表明,各項指標(biāo)均滿足規(guī)范和設(shè)計要求,結(jié)構(gòu)在關(guān)鍵構(gòu)件的性能化分析和非線性穩(wěn)定性分析中表現(xiàn)良好. 對屋蓋結(jié)構(gòu)進(jìn)行分叉柱失效后的抗連續(xù)性倒塌分析,結(jié)果表明單根分叉柱失效不會引起結(jié)構(gòu)的連續(xù)性破壞.
關(guān)鍵詞: 大跨度鋼結(jié)構(gòu); 單層網(wǎng)殼; 穩(wěn)定性分析; 抗連續(xù)性倒塌
中圖分類號:TU393. 3 文獻(xiàn)標(biāo)志碼:A 文章編號:1002?848X(2022)08?0016?05
DOI:10. 19701 / j.jzjg.YG211584
Large?span steel structure design of a water world stadium
WANG Qiang
(Shanghai Institute of Architecture Design & Research Co., Ltd., Shanghai 200041, China)
Abstract: In the structural design of a water park venue, a large?span steel shell is used on the outside, which is separatedfrom the internal concrete structure. The large?span structure is divided into two parts, the lower part and the upper part.Through in?depth comparison and selection at the plan stage, the implemented structural system was determined, and it iswas a single?layer reticulated shell system supported by Y?shaped columns and using radial trusses as stiffeners. In order toensure the safety, rationality and economy of the structural scheme, the vibration mode, stress ratio, deformation andstability of the structure were carried out respectively. Elastoplastic finite element analysis was carried out for some keyjoints. The analysis results show that all indicators meet the specifications and design requirements, and the structureperforms behave well in the performance analysis and nonlinear stability analysis of key components. The analysis ofanti?continuous collapse analysis of the roof structure after the failure of the bifurcation column was done. The results showsthat the failure of a single bifurcation column will not cause the continuous failure of the structure.
Keywords:large?span steel structure; single?layer reticulated shell; stability analysis; anti?continuous collapse analysis
第一作者:王強(qiáng),學(xué)士,高級工程師,一級注冊結(jié)構(gòu)工程師,主要從事復(fù)雜空間結(jié)構(gòu)設(shè)計,Email:wangqiang@ aisa.com.cn.
[引用本文] 王強(qiáng). 某水世界樂園場館大跨度鋼結(jié)構(gòu)設(shè)計[ J]. 建筑結(jié)構(gòu),2022,52( 8):16?20,98. WANG Qiang.Large?span steel structure design of a water world stadium[J]. Building Structure,2022,52(8):16?20,98.
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