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上海中心大廈樁基礎(chǔ)變剛度調(diào)平設(shè)計
姜文輝,巢斯
摘 要

 姜文輝,巢斯   (同濟大學(xué)建筑設(shè)計研究院(集團)有限公司,上海 200092)

摘要]對于上海地區(qū)的超厚軟弱土層,如何控制建筑沉降和差異沉降是設(shè)計的重點。變剛度調(diào)平設(shè)計是基于沉降控制的基礎(chǔ)設(shè)計方法,對于群樁基礎(chǔ)和軟土地基的高層建筑沉降差異控制有顯著的效果。介紹了上海中心大廈大直徑后注漿鉆孔灌注樁基礎(chǔ)設(shè)計中按照變剛度調(diào)平概念,通過合理選擇樁長和樁距,使得主樓底板中心和邊緣的計算差異沉降控制在合理的范圍,優(yōu)化了底板的設(shè)計。經(jīng)過試樁,認為后注漿的樁端注漿方法能有效提高單樁承載力和減小不同樁承載力間的變異值。
關(guān)鍵詞]上海中心大廈;變剛度調(diào)平設(shè)計;超高層建筑;樁筏基礎(chǔ);差異沉降
中圖分類號:TU473文獻標識碼:A文章編號:1002-848X(2012)06-0132-03
 
Variable rigidity design in the pile foundation of Shanghai Tower
Jiang Wenhui, Chao Si
(Architecture Design & Research Institute of Tongji University, Shanghai 200092, China)
 
Abstract: How to control the settlement and differential settlements of buildings in Shanghai is important. Variable rigidity design is based on the settlement control and is efficient in differential-settlement control of high-rise buildings with piles group and soft bed. Large-diameter post-grouting bored piles are adopted in the foundation of Shanghai Tower. The foundation of Shanghai Tower was designed according to the variable rigidity conception. By selecting length and distance of piles properly, the differential settlements of plate at centre and edges were controlled within the reasonable range, which can optimize the plate design. Pile tests show that post-grouting technique can increase the bearing capacity of the single pile as well as decrease differences among bearing capacities of different piles.
Keywords: Shanghai Tower; variable rigidity design; super high-rise building; plie foundation; differential settlement
作者簡介:姜文輝,碩士,高級工程師,Email:whenjon@126.com.
 
參考文獻
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