基坑和边坡联合支护方法的工程应用

Engineering application of the jointed support method between the foundation pit and the slope

某工程与邻近场地存在高差,上部形成永久性边坡,下部形成基坑临时性边坡。本设计方案综合考虑基坑和边坡的不同工况要求,上部采用锚索格构梁植草支护,下部采用桩锚支护。同时,为了缩短工期、节约造价,围护桩采用PHC管桩。根据变形计算及监测结果,表明本联合支护方法的效果良好,可为类似工程提供有益的借鉴作用。

There is an elevation difference between a project site and its adjacent site,which results in the formation of permanent slope in the upper part and temporary slope in the lower part.In this design scheme,the requirements of different working conditions of foundation pit and slope are considered comprehensively.The upper part is supported by grass planting with anchor cable lattice beam,and the lower part is supported by pile anchor.At the same time,in order to shorten the construction period and save the cost,PHC pipe pile is used as the enclosure pile.According to the deformation calculation and monitoring results,the jointed support method has good effect and can provide a useful reference for similar projects.