- 摘 要
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(1 上海通正鋁結構建設科技有限公司, 上海 201106;2 上海建科鋁合金結構工程研究院, 上海 201199)
摘要: G60 拉斐爾科創(chuàng)云廊屋蓋的一期工程尺寸為 736m×126m,為超長大跨鋁合金自由曲面網(wǎng)殼結構. 屋蓋通過鋼結構樹狀柱支撐于 11 棟高層建筑屋頂. 闡述結構設計過程中關鍵指標的設計以及荷載取值的原則,通過應變能最小的原則開展屋蓋結構找形的研究,介紹屋蓋結構中支撐體系設計和網(wǎng)格布置的考慮因素,進一步說明結構分析的關鍵計算結果. 重點介紹本項目的鋁合金板式節(jié)點性能研究,開展兩組板式節(jié)點足尺軸壓試驗,并與有限元模擬對比分析,結果驗證了有限元建模的有效性,并為結構設計的安全性和構造的合理性提供數(shù)據(jù)支撐. 同時進行了 3 組試件抗剪加強節(jié)點試驗,對比分析 3 種不同類型板式節(jié)點的受力特性和破壞現(xiàn)象. 結果表明抗剪鍵具有良好工作性能.
關鍵詞: 鋁合金結構; 板式節(jié)點; 自由曲面網(wǎng)殼; 節(jié)點試驗; 抗剪加強; 有限元分析
中圖分類號:TU398. 7 文獻標志碼:A 文章編號:1002-848X(2023)04-0114-06
DOI:10. 19701 / j. jzjg. LS210331
Design research of a large-span aluminum alloy free-form latticed shell
LIU Xiaowei1,2, LI Zhiqiang1,2, OUYANG Yuanwen1,2
(1 Shanghai Tongzheng Aluminium Structure Construction & Technology Co. , Ltd. , Shanghai 201106, China;2 Shanghai Jianke Aluminium Structure & Engineering Research Institute, Shanghai 201199, China)
Abstract:With a size of 736m × 126m, the roof of Rafael G60 Science and Technology Corridor first-stage project inShanghai is an ultra-long and super-span aluminum alloy free-form latticed shell structures. Supported by steel column-tree,the roof was built on main roofs of 11 high-rise buildings. Key indicators design and the principle of load value in thestructural design process were described. Research on form-finding of roof structure based on the principle of minimumstrain energy was introduced, as well as the considerations factors for supporting system design and grid arrangement inroof. Key calculation indicators of structural analysis were explained for further description. The performance research ofaluminum alloy gusset joint in this project was emphatically introduced. Two sets of full-scale joint test result and theconclusions of finite element comparison were carried out, which verified the validity of finite element modeling and providedata support for the safety of structural design and the rationality of joint construction. At the same time, three sets of theshear-strengthened joints test were carried out. Comparative analysis on three type joints’ mechanical characteristics andfailure phenomenon were analyzed. The results show that shear key has good working performance.
Keywords:aluminum alloy structure; gusset joint; free-form latticed shell; joints experiment; shear-strengthened; finiteelement analysis
∗國家自然科學基金重點項目(51738009).
第一作者:劉小蔚,碩士,高級工程師,主要從事鋁合金結構相關技術研究工作,Email:liuxiaowei@ tal-china. com.
[引用本文] 劉小蔚,李志強,歐陽元文. 大跨鋁合金自由曲面網(wǎng)殼設計研究[ J]. 建筑結構,2023,53(4):114-119,100. LIU Xiaowei,LI Zhiqiang,OUYANG Yuanwen. Design research of a large-span aluminum alloy free-form latticedshell[J]. Building Structure,2023,53(4):114-119,100.
