混合咬合式排桩在特殊性土层条件下深基坑地下水控制的应用

The Application of Mixed Occlusal Row Piles in Deep Foundation Pit and Groundwater Control under Special Soil Layer

论文以广东地区某一实际工程为依托,从方案设计、成本核算等方面对咬合式排桩在特殊性土层条件下深基坑地下水控制的应用进行简要分析,得出以下结论:①周边复杂且以生活垃圾、工业垃圾等特殊性土层条件下深基坑地下水控制宜采用截水措施,通过比选分析,基坑截水措施宜采用咬合式排桩方案。②咬合式排桩分为等直径和桩径不一致(混合)的平面布置方式,通过经济对比分析及现场实际控水情况,混合咬合式排桩相比等直径咬合式排桩节省造价7.17%,且止水效果较好,基坑内壁未出现漏水现象。

Based on a practical project in Guangdong province,this paper briefly analyzes the application of occluded row piles in the control of groundwater in deep foundation pit under the special soil condition from the aspects of scheme design and cost accounting,the conclusions are as follows:①Under the condition of complicated surroundings and special soil layers such as domestic refuse and industrial refuse,the measures of water interception should be adopted for the control of groundwater in deep foundation pit,the method of occluding row piles is suitable for water interception of foundation pit.②The occlusal row piles are divided into two types:equal diameter pile and mixed pile,compared with the equal-diameter occluded row piles,the mixed occluded row piles can save 7.17% of the cost and have better water-stop effect.