振冲碎石桩软基处理技术在海堤工程中的应用

Application of Vibro-replacement Gravel Piles Technology to Treat Soft Soil Foundation in Sea Wall Engineering

随着沿海地区滩涂资源的开发和利用,海上堤坝建筑技术也日益取得了新的突破。由于海涂基础属于软土地基,地质条件相当复杂,对于海堤基础的稳定性提出了越来越高的要求。为了有效控制软土地基上海堤建筑物的工后沉降和不均匀沉降,各种软基处理法在海堤工程建设中得到了越来越广泛的应用。文中结合海堤工程软土地基处理实例,对振冲碎石桩的地基加固机理、成桩工艺、施工质量控制、加固后复合地基土强度检测等进行了探讨,并对今后的施工和设计提出了一些参考性建议。

With the development and utilization of the tidal fiat resources in coastal area, offshore dam construction technology has increasingly obtained the new breakthrough.Because coastal land foundation is on soft soil and the geological condition is complex,higher requirements are required for the stability of sea embankmert. In order to control the settlement of sea embankment building after construction and the uneven subsidence effectively, various treatment techniques to treat soft soil foundation in sea embankment engineering are applied. Based on the example of reinforcing soft ground in sea embankment engineering,this paper introduces the techniques of the strengthening foundation by vibro-replacement gravel piles, the process of finished piles,quality control and detection of strength of composite foundation soil.This paper also puts forward some advisable suggestions about construction and design.