膨胀土边坡双排抗滑桩土压力监测与分析

Monitoring and analysis of earth pressure on double-row anti-slide piles in expansive soil landslide

针对某膨胀土路堑边坡中的双排抗滑桩支挡结构的土压力进行了长期监测,分析发现前排悬臂桩桩前土压力值可近似为梯形分布,桩后土压力呈三角形分布;后排全埋式抗滑桩桩前及桩后土压力值均近似呈三角形分布;在不存在明显滑动面的边坡中,不需要进行滑坡推力分配。

The earth pressure on the double-row anti-slide piles retaining structure in expansive soil slope was monitored and analyzed.The results show that for front cantilever piles,earth pressure before the pile was approximately trapezoid distributed but triangular distributed behind the pile,and for back buried piles earth pressure before and behind the pile both had a nearly triangular distribution.While the sliding surface in slope was not obvious,it is not necessary to implement thrusting distribution force.