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针对明挖基坑施工中经常出现围护桩侵限进而引起的凿桩现象,采用FLAC 3D有限差分法分析软件模拟北京地铁八号线西三旗站围护桩侵限状况,计算在围护桩未侵限和已侵限两种状态下桩体的侧向位移值,进而分析围护桩侵限对其侧向位移的影响,并与实际监测结果进行了对比分析。
In view of the phenomenon of piling caused by the encroaching pile limit in the construction of digging foundation pit, FLAC 3D finite difference analysis software was used to simulate the encroachment of retaining pile in Xisanqi station on the 8th line of Beijing Subway. And the lateral displacements of the piles under both the unconfined and the inflated piles. Then the influence of the confinement pile on the lateral displacements is analyzed and compared with the actual monitoring results.