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(1 華東建筑設計研究院總院, 上海 200002; 2 同濟大學土木工程學院, 上海 200092)
[摘要]通過綜合考慮建筑功能與建筑外型的要求、結構的抗側效率與經濟性,深灣匯云中心T1塔樓采用巨型框架-核心筒結構體系。經過彈性與彈塑性分析說明該結構體系能夠滿足設計的各項要求。由于本項目建筑平面為正方形,從底到頂的建筑平面沒有收分,橫向風荷載成為設計的主控荷載。另外,由于本項目中的巨柱垂直地面布置,導致外框承擔的剪力比較低,與現行規(guī)范對框筒結構二道防線的要求有一定差距。為此對結構進行了大震和超大震彈塑性分析,結果表明:巨型框架-核心筒的巨型框架由于自身抗側剛度很小,在整個結構進入塑性后,框架承擔的剪力分擔比與彈性時的結果相差不大,外框主要起抵抗傾覆力矩的作用而不是抗剪作用。
[關鍵詞]超高層建筑; 巨型框架-核心筒結構; 超大震設計; 失效模式
中圖分類號:TU318文獻標識碼:A文章編號:1002-848X(2017)12-0041-07
Strucutral design of T1 tower of Huiyun Center in Shenzhen Bay
Bao Lianjin1,2, Qian Peng1, Tong Jun1, An Dongya1, Zhou Jianlong1
(1 East China Architectural Design & Research Institute Co., Ltd., Shanghai 200002, China;
2 College of Civil Engineering, Tongji University, Shanghai 200092, China)
Abstract:Mega frame-core tube structure system is used in T1 tower of huiyun center in Shenzhen Bay, synthetically considering the building function, architectural profile, structural efficiency and economy. According the elastic and elasto-plastic analysis, the structural system can meet all design requirements. Since the tower section is square and doesn′t taper from the bottom to the top, lateral wind load dominates the structural design. In addition, all the mega columns are vertical to the ground, which causes the low shear ratio of outer frame. Since there is a certain gap between the frame shear ratio with the current specification requirements, major and super major seismic analysis has been done to ensure the safety of the mega columns. The analysis results show that there is little difference in outer frame shear ratio between the elastic and elasto-plastic dynamic history analysis, which proves the outer frame play a major role in resisting overturning moment rather than shear.
Keywords:super tall building; mega frame-core tube structural system; design method of super major earthquake; failure mode
*國家“十二五”科技支撐計劃課題(2012BAJ07B015)。
作者簡介:包聯(lián)進,碩士,教授級高級工程師,一級注冊結構工程師,Email:blj0068@ecadi.com。