高层建筑桩筏(箱)基础中减少桩数的可行性分析

Analysis of the Feasibility of Reducing the Number of Piles under Highrise Building Raft(Box) Foundation

大量工程实践表明 ,对于桩筏 (箱 )基础 ,当用桩达到一定数量后 ,再增多或减少桩数 ,对基础沉降没有显著影响。不少学者针对现行桩基础设计提出了可以从桩基础中抽出一定数量的桩而不会影响建筑物正常使用的建议。本文试通过工程实例来分析高层建筑桩筏箱基础设计中减少桩数的可行性 ,并就常规设计提出建议。

A great many engineering practices show that when piles used under raft foundation up to certain amout,to increase or to decrease the number of piles doesn't affect the settlement of the fundation significantly.Many researchers aimed at the piled foundation specification in effect have pointed out that a reduction of certain number of piles will not affect the normal usage of the building.In this paper,The feasibility of pile reduction is analysed through practical examples and suggestions on the routine design is proposed.