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由于施工局部堆载和降雨等不利条件的作用,在场区西侧发育一大型滑坡,局部出现抗滑桩变形破裂迹象,并有进一步发展的趋势。通过几次深入详细的勘察,查明该滑坡的破坏模式。进一步通过参数敏感性分析等手段综合选取滑坡稳定性分析的力学参数。由于计算所得滑坡推力过大,设置一排抗滑桩难以进行有效支挡。采用荷载结构法所得桩身内力分布,设置双排抗滑桩。之后运用地层结构法对双排抗滑桩进行优化设计,取得良好的治理效果。
Due to the partial loading of construction and unfavorable conditions such as rainfall, a large landslide is developed on the west side of the site area, and the signs of deformation and rupture of anti-slide piles appear locally and there is a tendency of further development. Through several thorough and detailed surveys, the damage pattern of the landslide was identified. The mechanical parameters of landslide stability analysis are further selected through parameter sensitivity analysis and other means. Due to the calculated thrust of the landslide is too large, setting a row of anti-slide pile is difficult to effectively support. The internal force distribution of pile body obtained by load structure method is used to set double-row anti-slide pile. Afterwards, the stratified structure method is used to optimize the design of double-row anti-slide piles and get good treatment results.