煤系地层等深厚强风化地质条件下的抗滑桩设计探讨

Discussion on Design of Anti-slide Piles under Deep and Strong Weathering Geological Conditions in Coal Measures Strata

介绍了开展滑坡研究具有重大的社会效益和经济效益,抗滑桩是治理滑坡的有效手段之一。从地基系数计算桩的受力原理出发,推导出"K法"、"M法"的适用条件以及滑坡推力分布形式。结合即将通车的盘兴高速公路K35+300处高路堤滑坡的特有煤系地层等深厚强风化软质岩层条件下抗滑桩设计实例,采用"M法"对两种滑坡推力分布下不同M值对抗滑桩内力等影响进行分析,总结出类似地层岩性下抗滑桩设计的要点和经验,可供类似滑坡工程参考。

It is introduced that the study of landslide is of great social and economic benefits,and the antislide pile is one of the effective means to control landslides. Based on the force theory of pile foundation calculation,the applicable conditions of K method and M method and the distribution form of landslide thrust are derived.Combined with the design example of anti-slide pile under the condition of deep strong weathered soft rock under the condition of deep weathering and strong weathered rock in K35 ＋ 300 high embankment landslide,the influence of different M values against the internal force of sliding pile under the distribution of two kinds of landslide thrust is analyzed by M method,and the design of anti-slide pile under the similar stratum lithology is summed up. Points and experiences can be used as reference for similar landslides.