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为满足工程建设的需要,对某市高新区表土层进行了渗流固结和直剪试验研究。试验测定了土体的基本物理性质指标并命名为粉质粘土;在一维固结渗流试验中测定得出土体的压缩系数为0.38 MPa-1、压缩指数为0.28,确定土体为中性压缩性土;得到了土体在各级压力下的变形曲线和竖向应变;在直剪试验中测定了土体在不同竖向压应力下的抗剪强度及土体的粘聚力和内摩擦角,为该地区的工程建设及建筑物的沉降分析提供了土体的基本参数。
In order to meet the needs of engineering construction, seepage consolidation and direct shear test of topsoil in a high-tech zone in a city was conducted. The index of basic physical properties of soils was determined and named as silty clay. The compression coefficient of soil was 0.38 MPa-1 and the compressibility index was 0.28. The soil was determined as neutral compression The deformation curve and the vertical strain of the soil under all levels of pressure were obtained. In the direct shear test, the shear strength of the soil under different vertical compressive stresses and the cohesion of the soil and the internal friction Angle, for the region’s construction and building settlement analysis provides the basic parameters of soil.