双排抗滑桩设计计算中的若干问题研究

从滑坡灾害谈起，分析了工程中常使用的支挡结构形式---双排抗滑桩。介绍了双排抗滑桩理论计算模型的研究现状，认为合理的计算模型必须慎重考虑桩-土之间相互作用，并给出了具有代表性的理论计算模型；指出了滑坡推力的计算方法已较成熟，研究热点多集中于推力在前、后排桩的分配方式上；针对研究较少的双排桩桩顶连接方式，介绍了现有的一些研究成果，认为没有哪种连接方式具有绝对的优势，应该视情况而定；分析、指出了研究动荷载作用下双排抗滑桩理论分析的必要性；从研究文献分析，认为数值模拟技术是双排抗滑桩理论研究的强有力工具，应该得到重视。最后给出了双排抗滑桩未来可能的几个研究方向。

Overview of Problems in Design and Calculation of Double Anti -slide Pile

This article introduces the research status of the calculation model of double anti -slide pile which is commonly used in retaining structure ,and proposes that the appropriate calculation models should take the raltions between pile and soil into account ,and then it also gives the representative theory calculation model .Moreover ,it studies the computing method of landslide thrust ,and finds out that the research hot spots mainly focus on the distribution mode of thrust in before and after piles .Aiming at pile connection mode which is less studies before ,the article discusses some current research results ,and points out that no connection mode has absolute advantages and the effects of each mode should depend on the specific situations .Therefore ,it analyzes the necessity of studying double anti - slide pile′s response under dynamic load , and emphasizes the importance of numerical simulation technology as a strong research tool for the double anti -slide pile theory research .Finally ,the article puts forward several probable research directions of double anti -slide pile research .