CFG桩复合地基承载力不足时的短桩补救方法及多桩复合地基检测

Remedial Method of Short Pile and Detection of Multi Pile Composite Foundation for Insufficient Bearing Capacity of CFG Pile Composite Foundation

本建筑原设计CFG桩复合地基承载力为330k Pa,施工完成一半多时发现不能满足390k Pa承载力要求,于是采用了在原长桩间隙布设CFG短桩形成长短桩复合地基,从而解决了原设计承载力不足的缺陷;施工结束后复合地基承载力采用了多桩复合地基检测方法,检测数据证明该处理措施经济合理可行。

The original design of CFG pile composite foundation bearing capacity is 330kPa. It can not meet the requirements of bearing capacity of 390kPa when construction is completed more than half of that. CFG short piles are inserted in the original long pile space. So, the defects of insufficient bearing force of the original design is solved. Detection method of bearing capacity of composite foundation for multi pile composite foundation after construction is used. Test results show that the measures are reasonable in economy and feasible.