摘要
静止土压力系数K_0作为岩土工程设计的一个基本参数,其测定是土工试验的重要内容。由于土质的差异,无法提供统一的K_0值,各地需通过试验或地区经验来确定。本文结合轨道交通1、2、3号线岩土工程勘察,开展宁波地区浅层土的静止土压力系数K_0研究。以室内三轴试验测定的K_0为参考,结合扁铲侧胀试验数据提出了适用于宁波地区的K_0计算经验公式,并给出了各土层K_0取值范围及建议值,可为宁波地区岩土工程设计提供技术支持。
The soil static pressure coefficient K_0 as a basic parameter for geotechnical design, the determination is important in soil testing. Due to the difference of the soil,the K_0 value should be determined by experiment or local experience. The shallow soil static earth pressure coefficient K_0 of Ningbo area is studied in the geotechnical investigation works for the Line No. 1,2 3 of Ningbo Urban Rail Transit project. Refereed to the K_0 value obtained from triaxial test,considering the data of the flat dilatometer test（ DMT）,an empirical formula to calculate the K_0 of Ningbo area is proposed. The range and suggestive value of K_0 for different soil strata is presented which could provide technical support for the geotechnical design in Ningbo area.
出处
《工程勘察》
2016年第6期11-17,共7页
Geotechnical Investigation & Surveying
基金
宁波市科技计划项目(2013C50005)
浙江省新苗人才计划项目(2015R405075)
关键词
静止土压力系数
扁铲侧胀试验
经验公式
static earth pressure coefficient
flat dilatometer test（DMT）
empirical formula
