双排桩基坑围护结构桩顶边坡优化稳定分析

摘要

FLAC3D was used to analyze a deep foundation pit retaining structure in Yangzhou city . The curves of double-row pile displacement changing with depth before and after the optimization were analyzed to verify the reliability of the structure with double-row piles. The change tendency of the maximum slope face horizontal displacement under different intensities of three-axis mixing pile was analyzed to obtain the minimum allowable strength of three-shaft stirring pile; the influence of different parameters of soil on the slope deformation was analyzed and solutions for soil strength which does not satisfy the demands were put forward.%利用FLAC3D软件对扬州市某项目深基坑围护结构进行数值模拟。分析了基坑边坡优化前后的双排桩桩身位移随深度的变化曲线，验证了双排桩结构的可靠性；分析了不同三轴搅拌桩强度下坡面最大水平位移值的变化趋势，获取了三轴搅拌桩的最小允许强度；分析了不同土体参数对边坡变形的影响，提出了土体强度不满足设计优化要求时的解决方法。