长春市某建筑场地地质勘察及剪切波速特征研究

Study on Geological Survey and Shear Wave Velocity Characteristics of a Building Site in Changchun City

以吉林省长春市某拟建项目为研究对象,基于相关技术规范,采用钻探取样、剪切波速试验等方法进行工程地质勘察。查明场地范围内地层岩性分布和水文地质条件,确定地基承载力特征值,判定土层渗透系数、场地土的类型和液化程度等;利用4种常见函数模型,针对不同土体甄选出精度较高的拟合函数,为场地周边区域建设剪切波速的验证和预测提供参考;根据场地工程地质条件,结合拟建筑物的特性,提出基础设计及施工方案建议。

Taking a proposed project in Changchun City,Jilin Province as the research object,based on the relevant technical specifications,the engineering geological investigation is carried out by means of drilling sampling,shear wave velocity test and other methods.The lithological distribution and hydrogeological conditions of the strata within the site are identified.The characteristic value of foundation bearing capacity is determined.The permeability coefficient of the soil layer,the type of site soil and the degree of liquefaction,etc.are judged.By using the four common function models,a fitting function with higher accuracy for different soils is selected,providing reference for the verification and prediction of shear wave velocity for the construction of the area around the site.Based on the engineering geological conditions of the site,in combination with the characteristics of the proposed building,the foundation design and construction program recommendations are proposed.