挤扩多盘桩承力扩大盘直径对单桩承载力影响的理论分析

ANALYSIS ABOUT THE DIAMETER OF THE BEARING PUSHEXTEND REAMED OF PUSH- EXTEND MULTI-UNDER-REAMED PILE AFFECTING THE BEARING CAPABILITY OF THE PILE

通过对挤扩多盘桩不同承力扩大盘直径在荷载作用下桩周土正应力及剪应力的模拟计算,对承力扩大盘直径对挤扩多盘桩单桩承载力的影响进行了定性的理论分析,得出相应的结论,为进一步综合考虑挤扩多盘桩单桩承载力计算提供了理论依据。

In the paper, through theoretical calculating about the stress of soil around the pile when the bearing push-extend reamed have the different diameter, it is qualitative analyzed that the influence for bearing capacity of the pushextend Multi-under-reamed pile, raised by the different diameter of the bearing push-extend reamed, the respond results are defined, and it is put forward that the theoretical basis of synthetically researching the bearing capacity of the pile of the push-extend Multi-under-reamed Pile.