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(1 四川省建筑設(shè)計(jì)研究院有限公司, 成都 610095;2 四川省建筑設(shè)計(jì)研究院有限公司復(fù)雜結(jié)構(gòu)設(shè)計(jì)研究中心, 成都 610095)

摘要: 西部股權(quán)投資基金基地項(xiàng)目為 7 度抗震設(shè)防區(qū)的鋼管混凝土柱-鋼梁-鋼筋混凝土核心筒混合結(jié)構(gòu),結(jié)構(gòu)高度 189. 7m,存在扭轉(zhuǎn)不規(guī)則、樓板局部不連續(xù)和其他不規(guī)則三項(xiàng)不規(guī)則項(xiàng),還存在大跨度懸挑桁架、豎向構(gòu)件局部轉(zhuǎn)換、塔樓與裙房不設(shè)防震縫、體型較大的幕墻裙擺鋼構(gòu)架等情況,屬于超限高層結(jié)構(gòu). 針對(duì)結(jié)構(gòu)超限和其他抗震不利情況,提出了抗震性能化的設(shè)計(jì)目標(biāo),對(duì)塔樓進(jìn)行了多遇、設(shè)防、罕遇地震作用下的等效彈性分析與彈塑性時(shí)程分析,對(duì)結(jié)構(gòu)的主要構(gòu)件進(jìn)行抗震性能目標(biāo)驗(yàn)算. 針對(duì)穿層柱、樓板舒適度、懸挑桁架、幕墻裙擺鋼構(gòu)架、復(fù)雜節(jié)點(diǎn)等進(jìn)行了專項(xiàng)分析,并對(duì)分析結(jié)果提出了有效的抗震加強(qiáng)措施,以確保結(jié)構(gòu)安全.

關(guān)鍵詞: 框架-核心筒; 超高層建筑; 混合結(jié)構(gòu); 抗震性能化設(shè)計(jì); 多道抗震防線

中圖分類號(hào):TU972+. 9,TU318+. 2 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2023)07-0024-08

DOI:10. 19701 / j. jzjg. SADI2306

Out-of-code high-rise structural design of Western Equity Investment Fund Headquarter Project

ZHANG Kun1, LAI Weiqiang1, RAN Xiyang1, LIU Yupeng1,2,LAI Hong1, TANG Yuanxu1, SU Zhide1, GUO Yuhang1,2

(1 Sichuan Provincial Architectural Design and Research Institute Co. Ltd. , Chengdu 610095, China; 2 ComplexStructure Design and Research Center, Sichuan Provincial Architectural Design andResearch Institute Co. , Ltd. , Chengdu 610095, China)

Abstract: The Western Equity Investment Fund Headquarter Project is located in the seismic zone where the seismicfortification intensity is classified as 7-degree. The structure height is 189. 7m, and the structure scheme adopts compositestructure of concrete-filled steel tubular column-steel beam-reinforced concrete corewall. The structure is considered as anout-of-code high-rise structure because there are three types of irregularities of structure, including torsional irregularity,local discontinuity of slab and other irregularities. In addition, other characteristics of the out-of-code high-rise buildingalso exist in this structure, including large-span cantilever truss, local conversion of vertical components, no seismic jointsbetween the tower and podium, and large curtain wall skirt steel frame. Regarding to the out-of-code conditions and worsescenario for seismic design, the objective of performance-based seismic design was put forward. The equivalent elasticanalysis and elasto-plastic time-history analysis were carried out for the tower under the action of frequent, fortification andrare earthquakes, and the seismic performance target checking calculation was carried out for the main components of thestructure. In order to ensure the safety of the structure, special analysis was carried out for the cross-layer column, floorcomfort level, cantilever truss, curtain wall skirt steel frame and complex joint, and effective seismic strengtheningmeasures were put forward based on the analysis results.

Keywords:frame-corewall; super high-rise building; composite structure; performance-based seismic design; multipleseismic defense lines

第一作者:張堃,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)及咨詢工作,Email:410271662@ qq. com.

[引用本文] 張堃,賴偉強(qiáng),冉曦陽(yáng),等. 西部股權(quán)投資基金基地項(xiàng)目超限高層結(jié)構(gòu)設(shè)計(jì)[ J]. 建筑結(jié)構(gòu),2023,53(7):24-31,63. ZHANG Kun,LAI Weiqiang,RAN Xiyang,et al. Out-of-code high-rise structural design of Western EquityInvestment Fund Headquarter Project [J]. Building Structure,2023,53(7):24-31,63.