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(1 柏濤國(guó)際工程設(shè)計(jì)顧問 (深圳) 有限公司, 深圳 518031; 2 深圳市柏濤藍(lán)森國(guó)際建筑設(shè)計(jì)有限公司, 深圳 518053)

摘要: 從樓蓋結(jié)構(gòu)選型、節(jié)點(diǎn)設(shè)計(jì)等方面闡述了長(zhǎng)沙國(guó)際會(huì)議中心 75m 大跨鋼桁架的設(shè)計(jì)要點(diǎn),采用有限元模擬方法對(duì)豎向荷載下鋼桁架極限承載力、樓板剛度及溫度作用對(duì)鋼桁架受力的影響進(jìn)行了分析,同時(shí)對(duì)樓蓋舒適度評(píng)估等設(shè)計(jì)重難點(diǎn)進(jìn)行研究. 結(jié)果表明,通過調(diào)整構(gòu)件安裝次序可使桁架構(gòu)件內(nèi)力得到合理重分配,局部構(gòu)件屈服后鋼桁架整體仍有較大的承載能力和變形能力,混凝土樓板對(duì)鋼桁架受力的影響主要限于與樓板直接接觸的桁架上弦. 大跨樓蓋能滿足正常使用舒適度要求,相關(guān)技術(shù)研究成果可供類似工程參考.

關(guān)鍵詞: 長(zhǎng)沙國(guó)際會(huì)議中心; 鋼桁架; 大跨樓蓋; 極限承載力; 樓板剛度; 溫度作用; 樓蓋舒適度

中圖分類號(hào):TU391,TU973 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2023)04-0093-08

DOI:10. 19701 / j. jzjg. 20220375

Mechanical behavior analysis and design of large-span steel truss for Changsha International Conference Center

GAO Yiqi1,2, LIN Chaowei1,2, LIU Hongxing1,2, FANG Feihu1,2, WU Yunze1,2

(1 PTI Engineering Design Consultancy Shenzhen Co. , Ltd. , Shenzhen 518031, China; 2 Shenzhen PT Lansn InternationalArchitecture Design Co. , Ltd. , Shenzhen 518053, China)

Abstract: The design key points of the 75m large-span steel truss for Changsha International Conference Center weredescribed from the aspects of the selection for floor structure and joint design. The finite element simulation method wasused to analyze ultimate bearing capacity of steel truss under vertical load, the influence of floor stiffness and temperatureon the steel truss mechanical behavior. At the same time, the design of floor comfort evaluation and other important anddifficult points were studied. The results show that the internal forces of truss members can be reasonably redistributed byadjusting their installation sequence, the steel truss still have great bearing capacity and deformation capacity after localmembers yield. The influence of concrete floor on the force of steel truss is mainly limited to the upper chord of trussdirectly in contact with the floor. The large-span floor can meet the comfort requirements, the research results can be usedas reference for similar projects.

Keywords:Changsha International Conference Center; steel truss; large-span floor; ultimate bearing capacity; floorstiffness; temperature effect; floor comfort

第一作者:高義奇,碩士,工程師,一級(jí)注冊(cè)結(jié)構(gòu)工程師,主要從事建筑結(jié)構(gòu)設(shè)計(jì)工作,Email: gaoyq10@ foxmail. com.

[引用本文] 高義奇,林超偉,劉紅星,等. 長(zhǎng)沙國(guó)際會(huì)議中心大跨鋼桁架受力性能分析與設(shè)計(jì)[ J]. 建筑結(jié)構(gòu),2023,53(4):93-100. GAO Yiqi,LIN Chaowei,LIU Hongxing,et al. Mechanical behavior analysis and design of large-spansteel truss for Changsha International Conference Center[J]. Building Structure,2023,53(4):93-100.