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(啟迪設(shè)計集團股份有限公司, 蘇州 215021)
摘要: 某綜合體酒店為高度 150m 的超限高層結(jié)構(gòu),存在兩項平面不規(guī)則及剛度突變一項豎向不規(guī)則. 針對平面不規(guī)則,對開洞樓板周邊予以加強,補充兩種不同程序計算復(fù)核;對設(shè)備夾層等層高較低的樓層,可采用二次結(jié)構(gòu)與主體結(jié)構(gòu)脫開處理,避免軟弱層和薄弱層同時出現(xiàn),同時對因剛度突變的薄弱層地震剪力放大 1. 25 倍,設(shè)置抗震性能化目標(biāo),補充小震彈性動力時程分析和大震動力彈塑性時程分析,使結(jié)構(gòu)滿足抗震性能目標(biāo)要求. 對塔樓屋面支撐幕墻鋼構(gòu)架應(yīng)考慮風(fēng)載作用及鞭梢效應(yīng),并在整體建模中考慮鋼構(gòu)架與主體結(jié)構(gòu)共同受力,保證鋼構(gòu)架具有足夠的安全能力.
關(guān)鍵詞: 超限高層結(jié)構(gòu); 平面及豎向不規(guī)則; 薄弱層; 抗震性能; 鞭梢效應(yīng)
中圖分類號:TU318 文獻標(biāo)志碼:A 文章編號:1002?848X(2022)07?0013?05
DOI:10. 19701 / j.jzjg.SZY2104
Structural design of a complex hotel super high?rise tower
ZHANG Du, YUAN Xuefen, LI Changping
(Tus?Design Group Co., Ltd., Suzhou 215021, China)
Abstract: The complex hotel is an over?limited high?rise structure with a height of 150m. There are two plane irregularitiesand one vertical irregularity with sudden stiffness. In view of the plane irregularity, the periphery of the open floor slab wasstrengthened, and two different programs were added for calculation and review. For the floors with lower heights such asequipment mezzanine, the secondary structure can be separated from the main structure to avoid the simultaneousoccurrence of weak floors. At the same time, the seismic shear force of the weak floors due to the sudden change in stiffnesswas amplified by 1. 25 times, and the seismic performance target was set, the elastic?dynamic time?history analysis undersmall earthquakes and the elastic?plastic time?history analysis under large earthquakes were supplemented, so that thestructure has the established seismic performance. For the steel frame of the tower roof supporting the curtain wall, the windload and the whiplash effect should be considered, and the joint force of the steel frame and the main structure should beconsidered in the overall modeling to ensure that the steel frame has sufficient safety capability.
Keywords:over?limited high?rise structure; plane and vertical irregularity; weak floor; seismic performance; whiplasheffect
第一作者:張杜,碩士,正高級工程師,一級注冊結(jié)構(gòu)工程師,主要從事結(jié)構(gòu)設(shè)計研究,Email:du.zhang@ siad?c.com.
[引用本文] 張杜,袁雪芬,李昌平. 某綜合體酒店超高層塔樓結(jié)構(gòu)設(shè)計[ J]. 建筑結(jié)構(gòu),2022,52 ( 7):13?17.ZHANG Du, YUAN Xuefen, LI Changping. Structural design of a complex hotel super high?rise tower [ J]. BuildingStructure,2022,52(7):13?17.
