广西某滑坡双排抗滑桩加固设计  

Design of two-row anti-slide piles strengthening certain landslide in Guangxi

作　　者：徐建强[1] 任伟中[1] 黄诚[1] 

机构地区：[1]中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,武汉430071

出　　处：《工程勘察》2011年第9期1-4,共4页Geotechnical Investigation & Surveying

基　　金：国家自然科学基金项目(NO.40772186);岩土力学与工程国家重点实验室重点项目(N0.SKLZ08064);国家科技支撑计划(NO.2009BAK53B03)

摘　　要：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。A large-scale landslide was developed in the west of the engineering site during to the influence of local load of construction,rainfall and other adverse conditions.Signs of deformation and fracture occurred on part of original anti-slide piles,which had been the trends of further development.Several in-depth detailed investigations had been carried out to identify the failure modes of the landslide.Mechanical parameters were comprehensively selected for stability analysis of landslide by sensitivity analysis on the shear strength parameters.Because of the tremendous landslide thrust,it＇s hard to retain effectively by only designing the front row piles.The landslide treatment with two-row anti-slide piles was designed by using loading-structure method.With the stratum structure method,the two-row anti-slide piles had been optimized,which had obtained obvious treatment effect.

关 键 词：双排抗滑桩 敏感性分析 破坏模式 荷载结构法 地层结构法 

分 类 号：TU42[建筑科学—岩土工程]