滨海吹填造陆地区岩土工程勘察问题分析与评价

围海造陆是当今沿海国家及城市开发土地资源的重要措施之一。以天津滨海某工程勘察为例,根据建设项目的构筑物特点、地基基础方案及场地土工程性质,采用了钻探取样、标准贯入试验、剪切波测试、十字板剪切测试、浅层平板载荷试验、室内试验等多种勘察手段获得了准确详实的地质资料,并对勘察过程中涉及到的冲填土、液化土、软土震限、负摩阻力、大面积群桩施工影响等关键技术问题进行了分析与评价,为该工程的设计及施工提供了可靠的岩土参数及建议。

Geotechnical Considerations in Near Shore Land Reclamation by Hydraulic Fill

The hydraulic fill and reclamation is one of the important measures in the development of the coastal urban areas.This paper presents the geoteehnical site investigation results of heavy equipment manufacturing facility reclamation through thehydraulic fill in Binhai District of Tianjin. Base on the characteristics of the proposed structures, foundation types and site conditions, the following investigation methods and insitu testing methods are used undisturbed soil sampling; Standard Penetration Tests; shear wave velocity measurement; vane shear tests; plate loading tests at shallow depth as well as laboratory tests.The properties of dredged soils; liquefaction susceptible soils are evaluated. The seismic settlement potential of loose soils,negative skin friction of piles and pile group performance issues are also analyzed. The extensive evaluation and analysis dataprovide reliable geotechnical design parameters.