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(湖南省建筑設(shè)計(jì)院集團(tuán)股份有限公司, 長(zhǎng)沙 410012)

摘要: 某結(jié)構(gòu)高度為 303. 0m 超高層建筑,最大高寬比達(dá) 9. 2,地上 66 層,地下 6 層,采用框架-核心筒+加強(qiáng)層的結(jié)構(gòu)體系,以鋼管混凝土疊合柱框架+鋼筋混凝土核心筒+伸臂桁架+環(huán)帶桁架作為抗側(cè)力體系。 該建筑簡(jiǎn)化為懸臂桿來(lái)分析結(jié)構(gòu)強(qiáng)度、剛度、穩(wěn)定性。 通過(guò)調(diào)整合理的周期、位移,控制了結(jié)構(gòu)剛度。 選用結(jié)構(gòu)剛重比及屈曲荷載為指標(biāo),驗(yàn)證結(jié)構(gòu)在水平作用下的穩(wěn)定性。 分析了在極限狀態(tài)下加強(qiáng)層構(gòu)件的承載力以及節(jié)點(diǎn)的彈塑性發(fā)展。 通過(guò)動(dòng)力彈塑性時(shí)程分析,研究了結(jié)構(gòu)的薄弱位置及延性。 靜力、動(dòng)力的分析結(jié)果表明,結(jié)構(gòu)抗震性能較好,滿足既定性能目標(biāo)。

關(guān)鍵詞: 超限高層結(jié)構(gòu); 大高寬比結(jié)構(gòu); 加強(qiáng)層; 剛重比; 整體穩(wěn)定性; 節(jié)點(diǎn)分析; 動(dòng)力彈塑性分析

中圖分類號(hào):TU318 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2022)22-0046-06

DOI:10. 19701 / j. jzjg. 20221164

Structural design and key problem research of out-of-code high-rise structure with largeaspect ratio

MAO Jianyu, DONG Bing, WANG Siqing, FANG Hui

(Hunan Architectural Design Institute Group Co. , Ltd. , Changsha 410012, China)

Abstract: A super high-rise building with a structural height of 303. 0m and a maximum height to width ratio of 9. 2 has66 floors above ground and 6 floors underground. The building adopts the frame-core tube structure system with thestrengthened stories, the concrete-filled steel tubular composite column frame, the reinforced concrete core tube, theoutrigger truss and the annular truss are together comprising lateral force resistance system. Taking the building as thecantilever rod as the analysis object, the structural strength, stiffness and stability were investigated. The structuralstiffness was controlled by adjusting a reasonable period and displacement. The structural stiffness to weight ratio andbuckling load were selected to as indicators to verify the stability of the structure under horizontal action. The bearingcapacity of members and the elastic-plastic development of joints of reinforcing layers were analyzed under the ultimatestate. The weak position and ductility of the structure were studied by dynamic elastoplastic time history analysis. Theanalysis results of the static and dynamic show the structure has a good seismic performance and could meet theestablished performance objectives.

Keywords:out-of-code high-rise structure; large height to width ratio structure; strengthened story; stiffness to weightratio; overall stability; joint analysis; dynamic elastic-plastic analysis

∗湖南省建筑設(shè)計(jì)院集團(tuán)股份有限公司科技研發(fā)課題(KY0300-0000-2019-0012)。

第一作者:毛健宇,碩士,高級(jí)工程師,一級(jí)注冊(cè)結(jié)構(gòu)工程師,主要從事結(jié)構(gòu)設(shè)計(jì)工作,Email:85157008@ qq. com。

[引用本文] 毛健宇,董冰,王四清,等. 大高寬比超限高層結(jié)構(gòu)設(shè)計(jì)及關(guān)鍵問(wèn)題研究[ J]. 建筑結(jié)構(gòu),2022,52(22):46-51. MAO Jianyu,DONG Bing,WANG Siqing,et al. Structural design and key problem research of out-of-codehigh-rise structure with large aspect ratio[J]. Building Structure,2022,52(22):46-51.