- 摘 要
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(中建科技集團有限公司, 深圳 518000)
摘要: 宕口酒店依山而建,位于舊有采石場開挖后遺存臺地. 建筑正立面呈雙向退臺造型,與后方山體輪廓線基本保持一致. 主塔樓以 7 層為界,上下兩組樓層分別呈南北和東西向布置,總體呈 T 形平面. 利用樓電梯間隔墻設(shè)置 5 個鋼筋混凝土筒體,構(gòu)建“多塔+連體+長懸臂”的框架-剪力墻結(jié)構(gòu). 針對塔樓整體性偏弱特點,合理設(shè)置抗震縫以簡化結(jié)構(gòu)體系;東西側(cè)端跨各增設(shè)一段聯(lián)肢墻,增強整體抗扭剛度;增加走廊區(qū)域樓板寬度;調(diào)整筒體內(nèi)樓梯間布置,以實現(xiàn)東西向框架梁得以貫通設(shè)置;位于 7 層錯層區(qū)域改為坡屋面等,以上措施能實現(xiàn)弱化平面和立面布置的不規(guī)則程度,增強塔樓整體性的綜合效應(yīng). 計算分析表明,靠近端跨的筒體對抗扭剛度貢獻起控制性作用.大震彈塑性對比分析表明,位于后方山體邊跨柱底設(shè)置隔震支座對降低框架柱損傷程度有明顯作用,且對相鄰墻肢損傷影響程度有限.
關(guān)鍵詞: 平面不規(guī)則; 長懸臂; 多塔; 連體; 框架-剪力墻結(jié)構(gòu); 空腹桁架; 山地建筑; 隔震
中圖分類號:TU318+. 1 文獻標志碼:A 文章編號:1002-848X(2023)09-0059-08
DOI:10. 19701 / j. jzjg. 20221285
Research on structural design and key technology of suspended building with two-way retraction
ZHANG Wei, ZHENG Qian, ZHANG Jialin, TIAN Qixiang, HONG Xin
(China Construction Technology Group Co. , Ltd. , Shenzhen 518000, China)
Abstract: The quarry hotel built along the mountain is located on the platform left after the excavation of the old quarry.The front elevation of the building is two-way retreation, and it is consistent with the contour line of the mountain behind.The main tower is bounded by 7 floors,the upper and lower groups of floors are arranged in north-south and east-westdirections respectively, and generally in a T-shaped plane. Five reinforced concrete cylinders are set in the partition wall ofthe elevator lobby of the building,the frame shear wall structure based on ‘multi tower + connected body + long cantilever’is constructed. Based on the weak integrity of the tower, the structure system was simplified by setting the anti-seismic jointreasonably, a section of coupling wall was set at the east and west end spans to enhance the overall torsional rigidity, thefloor width of the corridor area was increased,the arrangement of staircase inside cylinder was adjusted to realize, the framebeams arranged in the east-west direction can be connected and set up, the staggered area located of the 7th floor waschanged to sloping roof,the above measures can achieve a comprehensive effect of weakening the irregularity of plane andfacade layout, and enhancing the overall integrity of the tower. The calculation and analysis show that the tube near the endspan plays a controlling role in the contribution of torsional stiffness. The elastic-plastic comparative analysis under rareearthquakes shows that setting isolation bearing at the column bottom of the mountain side span has an obvious effect onreducing the damage degree of the frame column, and has a limited impact on the damage degree of the adjacent wall limb.
Keywords:plane irregularity, long cantilever; multi tower; connected body; frame shear wall structure; vierendeel truss;mountain architecture; isolation
∗中建科技集團有限公司科技研發(fā)計劃資助(ZJKJ-2022-3).
第一作者:張偉,碩士,正高級工程師,一級注冊結(jié)構(gòu)工程師,主要從事高層建筑和裝配式建筑設(shè)計與研究工作,Email:593225626@ qq. com.
[引用本文] 張偉,鄭茜,張佳琳,等. 雙向退臺“懸空”建筑結(jié)構(gòu)設(shè)計及關(guān)鍵技術(shù)研究[ J]. 建筑結(jié)構(gòu),2023,53(9):59-66,74. ZHANG Wei, ZHENG Qian, ZHANG Jialin, et al. Research on structural design and key technology ofsuspended building with two-way retraction[J]. Building Structure,2023,53(9):59-66,74.
