一种新型复合支护技术在软土基坑工程中的应用

Application of the Technique of Compound Support in Footing Groove of Soft Soil

近几年,土钉结合水泥搅拌桩或旋喷桩的复合土钉墙支护技术在深基坑工程的应用中得到了较多的应用,而土钉结合沉管灌注桩的复合技护形式在基坑工程中的应用未见报道。沉管灌注桩与土钉的刚度相差较大,两者综合运用时协同工作效果如何有待检验。在杭州绿洲花园二期基坑支护工程中,土钉结合沉管灌注桩的复合支护得到了成功应用,本文介绍了该基坑工程支护方案与施工、监测情况及应用效果。

In this years soil nail combining with cement agitation stakes or composite soil nailing wall combining with rotary jet grouting pile is widely used in deep foundation pit, but the use of compound timbering of soft nail combining with the driven cast-in-place pile in deep foundation pit is quite limited. The rigidity of driven cast-in-place pile is different from the soil nail's, so the effect of soft nail combining with driven cast-in-place pile should be tested. In the deep foundation pit of lv-zhou park of hangzhou, the application of soil nail combining with driven cast-in-place is very successful, this paper introduces the project of this deep foundation pit of the engineering and the effect of this project to this project to this engineering.