可控刚度桩筏基础在某总部大楼应用分析

Application Analysis of Controllable Rigidity Pile Raft Foundation in A Headquarters Building

厦门某总部大楼建筑工程地质条件较好,为充分发挥基底土层较高的承载能力,该项目拟采用可控刚度桩筏基础方案。采用MIDAS数值模拟软件和盈建科计算软件对可控刚度桩筏基础方案的桩顶反力、地基土承载力和基础沉降3个方面进行了对比,验证了该方案的合理性和经济性。结果表明:可控刚度桩筏基础可以实现桩土共同作用,减少基础差异沉降。选取合适的调节器刚度,可使地基土承载力得到充分发挥,可控刚度桩筏基础取得良好受力性能的同时,实现了较好的经济效益,具有一定的优越性。

A Headquarters Building in Xiamen has good engineering geological conditions. In order to give full play to the high bearing capacity of the base soil,this project plans to adopt the controllable stiffness pile raft foundation scheme. MIDAS numerical simulation software and YJK calculation software are used to calculate and analyze the pile top reaction,foundation soil bearing capacity and foundation settlement of the controllable rigidity pile-raft foundation scheme. The results show that the controllable stiffness pile-raft foundation can achieve pile-soil interaction and reduce differential settlement;select the appropriate regulator stiffness,so that the bearing capacity of foundation soil can be fully exerted. Controllable stiffness pile-raft foundation achieves good mechanical properties and economic benefits,which has certain advantages.