摘要
通过对高速公路人工高填土边坡挡土墙上土压力进行现场观测,并对其分布规律进行了研究。结果表明,水平土压力随上部填土高度沿墙高呈非线性分布,近似为双直线形式,其值介于理论静止土压力和理论垂直土压力之间,更接近最大静止土压力,与用经典土压力计算理论求得的结果有很大差别,也和单级挡土墙土压力分布有较大区别。在现场观测数据的基础上,采用数据拟合方法给出水平土压力计算的经验公式。
In this study,field observation on the earth pressure of gravitation type multi-level retaining wall on different working conditions was carried out,and research on rule of distribution of the earth pressure was conducted.It was found that horizontal earth pressure appears nonlinear changed along retaining wall with upper embankment height,approximating to style of double line,its value was between theoretical earth pressure at rest and vertical earth pressure,more close to maximal earth pressure at rest.There were great differences between classical earth pressure theoretical value and earth pressure distributed on single level retaining wall.Empirical formula of horizontal earth pressure calculation was given out on the basis field observation data by data fitting method.
出处
《云南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第3期424-431,共8页
Journal of Yunnan Agricultural University:Natural Science
关键词
土压力
重力式多级挡土墙
工况
非线性
双直线
earth pressure
gravitation type multi-level retaining wall
working condition
nonlinear
double lines
