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(gad 杰地設(shè)計.浙江綠城建筑設(shè)計有限公司,杭州 310007)
摘要: 湖州南太湖 CBD 主地標(biāo)塔樓為高度 318m 的高度超限項目，采用鋼管混凝土框架-鋼筋混凝土核心筒-伸臂桁架-環(huán)帶桁架結(jié)構(gòu)體系。項目外形為曲面形體，底部分叉類似人字形結(jié)構(gòu)，結(jié)構(gòu)外框采用小角度斜柱擬合建筑形體，兩塔樓底部由連接桁架相連。介紹了針對人字形結(jié)構(gòu)特點(diǎn)的基礎(chǔ)設(shè)計策略，以及結(jié)構(gòu)的剛重比、剪重比、層間位移角、框架承擔(dān)剪力比例等整體指標(biāo)情況；比較了單塔模型與連體模型結(jié)構(gòu)的自振周期和分塔水平位移，分析了表現(xiàn)出分塔動力特性的首階振型，結(jié)果表明當(dāng)上部連體結(jié)構(gòu)約束住分塔的變形時，按立面開洞判定的單塔計算模型能夠準(zhǔn)確反映出人字形結(jié)構(gòu)的整體特性；此外，還介紹了連接體、伸臂桁架、環(huán)帶桁架、底部通高柱及頂部 28m×31m 拉索幕墻自平衡鋼外框的分析與設(shè)計。
關(guān)鍵詞: 超限高層建筑； 立面開洞； 人字形結(jié)構(gòu)； 連體桁架； 巨型拉索幕墻鋼外框
中圖分類號:TU318+. 1 文獻(xiàn)標(biāo)志碼:A 文章編號:1002-848X(2022)19-0022-07DOI:10.19701 / j.jzjg.gad2209
Structural design of the main landmark tower in South Taihu CBD of Huzhou
QI Xiangming,LONG Gan,ZHU Qi,YAO Kaiming,XUE Jinke，ZHONG Zhouneng,HU Damin,FANG Xunke
(gad.Zhejiang Greenton Architectural Design Co. ,Ltd. ,Hangzhou 310007,China)
Abstract: The main landmark tower in South Taihu CBD of Huzhou is an out-of-code project with a height of 318m. Itadopts a concrete-filled steel tube frame-reinforced concrete core tube-outrigger truss-ring belt truss structure system. Thegeometric shape of the tower is curved plane,and the bottom structure is similar to a herringbone structure. The outer frameof the structure adopts a small-angle inclined column to fit the building shape,and the bottom of the two towers is connectedby a conjoined truss. The basic design strategy according to the characteristics of the herringbone structure,as well as theoverall indicators such as the stiffness gravity ratio,shear gravity ratio,displacement angle,and frame shear ratio wereintroduced. The natural vibration period and the horizontal displacement of the sub-tower of the single-tower model and theconjoined model structure were compared,and the first-order mode shape showing the dynamic characteristics of thesub-tower was analyzed. The results show that when the upper conjoined structure restrains the deformation of the sub-tower，the single-tower calculation model determined by the facade opening can accurately reflect the overall characteristics of theherringbone structure； in addition,the connection members,outrigger truss,ring-belt truss,bottom double-height column，and the analysis and design of balanced steel outer frame of the top 28m×31m cable curtain wall were also introduced.
Keywords:out-of-code high-rise structure； facade opening； herringbone structure； conjoined truss； giant cable curtain wallsteel frame
第一作者:戚向明，碩士，高級工程師，一級注冊結(jié)構(gòu)工程師，主要從事公建、住宅等結(jié)構(gòu)設(shè)計工作，Email:582798010@ qq. com。
[引用本文] 戚向明，龍甘，朱奇，等. 湖州南太湖 CBD 主地標(biāo)塔樓結(jié)構(gòu)設(shè)計[J]. 建筑結(jié)構(gòu)，2022，52(19):22-28.QI Xiangming，LONG Gan，ZHU Qi ，et al. Structural design of the main landmark tower in South Taihu CBD of Huzhou[J]. Building Structure，2022，52(19):22-28.
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