滑坡微型桩连梁作用试验研究

为研究微型桩连梁在抗滑作用中的效果,进行了滑坡微型桩抗滑作用大型物理模型试验,对比了有无连梁情况下,微型桩的破坏情况及其抗滑效果。试验结果为:连梁能有效减小微型桩桩身的破坏程度;能减小微型桩桩顶60%左右的位移;能够有效减小滑面处桩身位移,提高桩体的整体抗滑性,能促进其滑面处抗剪强度;连梁能有效提高滑坡体稳定性4.5%。研究结果可为微型桩加固滑坡机理提供参考。

Experimental study on the function of coupling beams for micropiles in landslide

Model tests for the sliding function of micropiles in landslide have been carried out for studying the affection of coupling beams in landslide reinforcement, which aim to explain the damage extent of micropiles and their anti-sliding effect with coupling beams. According to the results from tests, the degree of damage for micropiles with coupling beams is smaller than that without the beams. The coupling beams could reduce about 60% of the top displacement of micropiles, and effectively reduce the pile displacement in sliding surface, which meant it might improve the overall slip resistance of pile, and promote the shear strength in sliding surface. The micropiles with coupling beams could effectively improve the stability of landslide about 4.5%. All the results and conclusions are hoped to provide the foundation for the reinforcing mechanism of landslide with micropiles.