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(華南理工大學建筑設計研究院有限公司, 廣州 510641)
[摘要]貴陽漁安安井溫泉旅游城未來方舟G7為大型商住綜合體項目,塔樓與商業(yè)裙樓設縫分開。其中裙房采用框架結構,共7層,3棟塔樓為高度180~210m的超高層住宅,采用框支剪力墻結構。塔樓由于高位轉換且轉換層以上層數(shù)較多,結構受力相對復雜。采用ABAQUS對框支轉換構件進行三維實體有限元分析,揭示框支轉換結構“拉桿-拱”受力機理;通過改變轉換層位置,研究框支剪力墻與落地核心筒之間的剪力傳遞規(guī)律;提出兩種方便轉換梁拉筋貫通錨固的框支轉換節(jié)點形式,并論證其安全可靠性。對轉換梁、框支柱、框支連接節(jié)點、框支剪力墻、落地核心筒以及轉換層上下幾層樓蓋等轉換結構相關構件進行分析,并采取相應構造加強措施,保障轉換結構受力安全,使得整體結構達到預設的C級抗震性能目標。
[關鍵詞]超高層建筑; 框支剪力墻結構; “拉桿-拱”受力機理; 剪力傳遞; 框支轉換節(jié)點
中圖分類號:TU398文獻標識碼:A文章編號:1002-848X(2019)20-0034-06
Analysis and design of frame-supported transfer structure of Guiyang Future Ark G7 Building
Lin Sijia, Lai Hongtao
(Architectural Design & Research Institute of SCUT Co., Ltd., Guangzhou 510641, China)
Abstract:Guiyang Yu′an Anjing Hot Spring Tourist City Future Ark G7 Building is a large-scale commercial and residential complex project where the tower and commercial skirt building are separated with construction joints. The skirt building adopts frame structure with seven stories. Three tower buildings are super high-rise residential buildings with height of 180~210m, and frame-supported shear wall structure is adopted. Because of the high-level transfer and the large number of stories above the transfer floor, the structural stress of the tower building is relatively complex. ABAQUS was used to carry out three-dimensional solid finite element analysis of frame-supported transfer members to reveal the pulling rod and arch mechanical behavior of frame-supported transfer structure. By changing the location of transfer floor, the shear transfer law between frame-supported shear wall and corewall on the ground was studied. Two types of frame-supported transfer joints were proposed to facilitate the anchorage of transfer beam tension bars. Its safety and reliability were also demonstrated. Members related to the transfer structure were analyzed including the transfer beam, frame-supported column, frame-supported connection node, frame-supported shear wall, corewall on the ground and the upper and lower floors of the transfer layer, and corresponding structural strengthening measures were taken to ensure the safety of the transfer structure, so that the overall structure could reach the pre-set C-grade seismic performance target.
Keywords:super high-rise building; frame-supported shear wall structure; pulling rod and arch mechanical behavior; shear transfer; frame-supported transfer joint
通訊作者:賴洪濤,學士,碩士生導師,高級工程師,Email:gzyayun2010@qq.com。