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(1 廣州容柏生建筑結(jié)構(gòu)設(shè)計事務(wù)所 (普通合伙) ?？诜炙? ?？?570100;2 廣州容柏生建筑結(jié)構(gòu)設(shè)計事務(wù)所 (普通合伙), 廣州 510170)
摘要: 某超高層辦公塔樓結(jié)構(gòu)高度 245. 15m,幕墻高度 289. 7m,高區(qū)東西側(cè)立面收進,采用了鋼管混凝土框架-鋼筋混凝土核心筒混合結(jié)構(gòu)體系. 為實現(xiàn)東西側(cè)收進 4m 的立面要求,進行了斜柱轉(zhuǎn)換、桁架轉(zhuǎn)換、搭接柱桁架轉(zhuǎn)換方案的選型比較. 綜合考慮方案對室內(nèi)觀感、空間使用、凈高等的建筑影響及結(jié)構(gòu)受力、材料用量、工期等因素,選定了利用避難層空間設(shè)置搭接柱桁架轉(zhuǎn)換的結(jié)構(gòu)方案. 對與搭接柱的相關(guān)結(jié)構(gòu),設(shè)定了合適的抗震等級和性能目標;對搭接柱桁架進行了考慮豎向地震影響的多工況受力分析;對搭接柱桁架轉(zhuǎn)換引起承擔(dān)水平力構(gòu)件包括水平桁架、核心筒剪力墻、樓板進行了分析驗算;對搭接柱桁架的防連續(xù)倒塌能力進行了分析驗算;對關(guān)鍵節(jié)點進行了有限元分析. 在各項分析結(jié)果的基礎(chǔ)上,結(jié)合結(jié)構(gòu)概念設(shè)計,對搭接柱轉(zhuǎn)換相關(guān)構(gòu)件依據(jù)性能要求采取了合適的設(shè)計措施,實現(xiàn)了結(jié)構(gòu)的可行性和安全性.
關(guān)鍵詞: 超高層結(jié)構(gòu); 高區(qū)立面收進; 搭接柱; 轉(zhuǎn)換桁架; 水平桁架; 抗震性能設(shè)計; 選型分析
中圖分類號:TU318+. 1 文獻標志碼:A 文章編號:1002-848X(2023)09-0053-06
DOI:10. 19701 / j. jzjg. LS220241
Structural design and analysis of lapped column of a super high-rise tower with elevation retraction
LI Dongcun1,2
(1 Haikou RBS Architectural Engineering Design Associates, Haikou 570100, China;2 RBS Architectural Engineering Design Associates, Guangzhou 510170, China)
Abstract:The structural height of a super high-rise office tower is 245. 15m, the height of the curtain wall is 289. 7m, theeast and west facades of the high area are retracted, and the concrete filled steel tube frame-reinforced concrete core tubehybrid structure system is adopted. In order to achieve the elevation requirement of retracting 4m from the east to the west,the selection and comparison of inclined column conversion, truss conversion, and lapped column truss conversion schemeswere carried out. Comprehensively considering the architectural impact of the scheme on the indoor appearance, space use,net height, and structural stress, material consumption, construction period and other factors, and the structural scheme ofusing the refuge floor space to set lapped column truss conversion was selected. For the structures related to the lappedcolumn, appropriate seismic grade and performance target were set. The stress analysis of lapped column truss undermultiple working conditions considering the impact of vertical earthquake was carried out. The analysis and checkingcalculation of the components bearing horizontal force caused by the conversion of lapped column truss were carried out,including the horizontal truss, the core tube shear wall, and the floor slab. The continuous collapse resistance of lappedcolumn truss was analyzed and checked. The finite element analysis of the key nodes was carried out. On the basis ofvarious analysis results, combined with the structural conceptual design, appropriate design measures were taken for thecomponents related to the transfer of lapped columns according to the performance requirements, which realize thefeasibility and safety of the structure.
Keywords:super high-rise structure; elevation retraction in high area; lapped column; transfer truss; horizontal truss;performance-based seismic design; selection analysis
作者簡介:李東存,學(xué)士,高級工程師,主要從事工程結(jié)構(gòu)設(shè)計與研究,Email:lidongcun@gzrbs. com.
[引用本文] 李東存. 某立面收進超高層塔樓搭接柱結(jié)構(gòu)設(shè)計和分析[ J]. 建筑結(jié)構(gòu),2023,53(9):53-58,107. LIDongcun. Structural design and analysis of lapped column of a super high-rise tower with elevation retraction[J]. BuildingStructure,2023,53(9):53-58,107.
