摘要
为了探讨扁铲侧胀试验用于黄土工程特性评价的方法,对西安地铁工程获得的大量扁铲侧胀试验数据进行整理分析,运用数理统计方法得到了西安黄土地层的侧胀土性指数I_D值分布规律;对采用不同经验公式求得的静止侧压力系数K_0值与室内试验值进行了比较,给出了西安地区静止侧压力系数的经验修正公式。通过对Δp(扁铲侧胀试验膨胀侧压力与初始侧压力之差)与q_c(静力触探得到的锥间阻力)的相关关系分析表明,二者呈近似线性关系。
In order to explore the method of applying flat dilatometer test for loess engineering characteristics evaluation,the large amount of data collected from flat dilatometer test for Xi’an subway project are processed and analyzed. The distribution law of the lateral swelling soil index ID of loess layer at Xi’an is obtained by mathematical statistics method;the " at-rest" coefficient of lateral earth pressure,K0 obtained by different empirical formulas is compared with the indoor test value,and the empirical correction formula of the " at-rest" coefficient of lateral earth pressure in Xi’an area is proposed. The correlation between Δp( the difference between the lateral swelling pressure and the initial lateral pressure of the flat dilatometer test) and qc( the intercone resistance obtained by the static penetration test)shows that the two are approximately linear.
作者
梁谊
于永堂
刘争宏
王东红
张亚
LIANG Yi;YU Yongtang;LIU Zhenghong;WANG Donghong;ZHANG Ya(Mechanical Industry Survey and Design Institute Co.,Ltd.,Xi'an 710043,China;School of Civil Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China;Shaanxi Key Laboratory of Special Soil Engineering and Processing Technology,Xi'an 710043,China)
出处
《西北水电》
2019年第2期75-79,共5页
Northwest Hydropower
基金
国机集团重点研发项目(SINOMACH2017科249号)
陕西省科技统筹创新工程计划项目(2016KTZDSF04-05-01)
关键词
扁铲侧胀试验
黄土
侧胀土性指数
静止侧压力系数
flat dilatometer test
loess
lateral swelling soil index
" at-rest" coefficient of lateral earth pressure
