利用扁铲侧胀试验测定静止侧压力系数

Acquisition of lateral earth pressure coefficient by fla dilatometer tests

静止侧压力系数k0作为岩土工程设计中一个重要的参数,因为地域的差异,工程中往往无法提供统一的k0值,各地需要通过试验或经验值来确定。室内试验存在一定的"失真",所以利用原位测试获得较为准确地数据是十分必要的。结合了柯桥区某工程的勘察资料,开展该地区典型土层的静止侧压力系数k0值的研究,以室内试验测定的k0值为参考,并结合现场的扁铲侧胀试验(DMT)数据,建立静止侧压力系数k0和水平应力指数KD的关系式。

The static lateral earth pressure coefficient A:0is a indispensable important parameter in geotechnical design.Due to the difference of the soil,the kQ value should be determined by experiment or experience.However,there is some distortion in laboratory,so it is necessary to obtain more accurate data by in-situ test.The earth pressure coefficient kQ of the typica soil static in Keqiao is studied in the geotechnical investigation works for a project in this area.Refereed to the empirical formula,combining the data of the flat dilatomerter test.