原位载荷试验在砂卵砾石基础中的应用

Application of In-situ Loading Test in Sand and Gravel Foundation

在新疆依扎克水电站坝址区砂砾石层进行了三组原位载荷试验,试验成果表明,砂卵砾石地基在不同压力的作用下变形情况,最终确定极限荷载值。通过砂卵砾石层试验工作,对砂卵砾石物理力学性质随压力的变化规律进行了分析研究,对砂卵砾石地基的承载力作出评价。

Three groups in-situ load test are conducted at the dam site of Yizhake Hydropower Station, Xinjiang. The deformation of the sand and gravel foundation under the different pressure is obtained through the test, and maximum load value is determined. By the experiment in the sand and gravel stratum, the variation law of physical and mechanical properties along with the pressure is analyzed and the bearing capacity of the sand and gravel foundation is evaluated.