论文部分内容阅读
膨胀土是一种特殊性土,本文通过介绍斐济共和国维提岛的工程勘察实例,阐明了膨胀土地基工程勘察的特点。通过钻探、原位测试、室内试验分析等手段获得了膨胀土地基的工程性质,针对地基土的特殊性质,分析地基土的矿物成分、颗粒组成,并进行了自由膨胀率、膨胀力及收缩等试验,根据土壤的物理指标、力学指标确定了大气影响深度,依据计算的地基胀缩变形量采用调整基础砌置标高的天然地基方案,以期对类似工程条件的勘察工作起到借鉴作用。
Expansive soil is a kind of special soil. In this paper, by introducing the example of engineering investigation in Viti Levu, Fiji, the article expounds the characteristics of engineering investigation of expansive soil foundation. The engineering properties of expansive soil foundation were obtained by means of drilling, in situ test and laboratory test. According to the special properties of foundation soil, the mineral composition and particle composition of foundation soil were analyzed, and the free expansion, expansion and contraction According to the physical and mechanical indexes of the soil, the influence depth of the atmosphere was determined. Based on the calculation of the expansion and contraction deformation of the foundation, the natural ground foundation plan for adjusting the elevation of the foundation was used, which could be used as a reference for the investigation of similar engineering conditions.