微型桩群整治堆积层滑坡模型试验研究

摘要

The frame physical model similar test was conducted with the loess in the northern suburb of Xi'an, Shaanxi Province, in which three rows of micro-piles were used for the reinforcement of the accumulation layer landslide.The mechanical performance of the micro-pile group was parametrically studied under the condition of different water content.The displacements at the piles tops,the moments at the piles,the soil pressure in front of the piles and the failure modes of the piles were analyzed.The results show that with reasonable pile spacing,row spacing and anchor depth,the reinforcement effect using the three rows of piles is admirable when the water content of the sliding body is about 10%.%以陕西省西安市北郊的黄土为土样,采用框架物理模型相似试验,研究在不同含水率的情况下用3排微型桩整治堆积层滑坡时桩体受力情况,分析微型桩桩顶位移、桩身弯矩、桩前土压力和桩体破坏模式.结果表明:在合理的桩间距、排间距和锚固深度的情况下,当滑体的含水率在10%左右时,3排桩的加固效果比较好.