北京達美中心廣場基礎變剛度調平設計
王楊，詹永勤
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（中國建筑科學研究院， 北京 100013）
［摘要］介紹了達美中心廣場大底盤多塔樓結構的基礎設計。在基礎設計時，運用變剛度調平的設計理念，采用協(xié)同分析計算的方法，增強塔樓基礎、弱化裙房基礎。兩棟150m高塔樓采用樁基礎，兩棟100m高塔樓采用CFG樁復合地基，裙房采用天然地基。塔樓核心筒下和外框架柱下按不同樁長及不同樁間距分別布樁，不同的區(qū)域實現(xiàn)不同的承載能力和支承剛度，減小了差異沉降、底板內力和上部結構次應力。［關鍵詞］基礎設計; 協(xié)同分析; 變剛度調平; 差異沉降中圖分類號：TU473 文獻標識碼：A 文章編號：1002-848X(2015)13-0062-05
Variable rigidity foundation design of Damei center plaza in BeijingWang Yang, Zhan Yongqin(China Academy of Building Research, Beijing 100013, China )Abstract:The foundation design of Damei center plaza in Beijing which is a structure combined by multi-tower within a large podium was introduced. During the foundation design process, the principle of variable rigidity design was practiced that based on collaborative analyzing calculation to enhance tower foundation while keep podium basis in relatively weaken condition. Pile foundation was applied to two 150 meter high towers, CFG pile foundation was implemented for two 100 meter high towers and natural foundation supported podium structure. Meanwhile, the tower core and outer frame columns were separately sustained by different piles in different length and different spacing arrangement to achieve different carrying capacity and support stiffness, which benefits to reduce the differential settlement, base slab internal force and the upper structure stress.Keywords:foundation design; coordinated analysis; variable rigidity design; differential settlement
作者簡介：王楊，高級工程師，一級注冊結構工程師，Email:wangyang@cabr-design.com。
