抗滑桩土压力分布的探讨  

Discussion on Earth Pressure Distribution of Anti-sliding Pile

作　　者：杨光华[1,2] 李志云 姜燕 YANG Guanghua;LI Zhiyun;JIANG Yan(Guangdong Research Institute of Water Resources and Hydropower,Guangzhou 510635,China;The Geotechnical Engineering Technology Center of Guangdong Province,Guangzhou 510635,China)

机构地区：[1]广东省水利水电科学研究院,广州510635 [2]广东省岩土工程技术研究中心,广州510635

出　　处：《广东水利水电》2025年第4期1-7,14,共8页Guangdong Water Resources and Hydropower

基　　金：国家自然科学基金项目(编号:52078143)。

摘　　要：作用于抗滑桩上的土压力分布通常有3种形式,分别是三角形分布、梯形分布和矩形分布。采用不同的分布形式对计算结果影响大,实际工程中采用哪一种土压力分布形式,目前尚缺乏定论。该文提出一种计算方法,认为作用于抗滑桩上的土压力有两种,一种是主动土压力,可以按传统的朗肯或库伦土压力理论计算;一种是沿滑坡整体滑动产生的下滑力。当不存在主动破坏面时,下滑力的分布力是矩形分布;当仅有主动破坏面时,分布力为主动土压力的三角形分布;当存在主动和整体滑动两个可能的破坏面时,分布力为梯形分布,其中下滑力减去主动土压力后的部分为矩形分布。研究成果可为抗滑桩土压力分布提供一种可供参考的实用计算方法。There are usually three forms of earth pressure distribution acting on anti-sliding piles,namely triangular distribution,trapezoidal distribution and rectangular distribution.The use of different distribution forms has a great influence on the calculation results.Which earth pressure distribution form should be used in practical engineering?There is still a lack of effective methods.A proposed calculation method is proposed here.It is considered that there are two kinds of earth pressure acting on anti-slide piles.One is active earth pressure,which can be calculated by traditional Rankine or Coulomb earth pressure theory;The other is the sliding force generated by the overall sliding along the landslide.When there is no active failure surface,the distribution force of the sliding force is a rectangular distribution;When there is only an active failure surface,the distributed force is a triangular distribution in the form of active earth pressure;When there are two possible failure surfaces of active and overall sliding,the distribution force is trapezoidal distribution,and the part of sliding force minus active earth pressure is rectangular distribution.Therefore,a practical calculation method for reference is provided for the earth pressure distribution of anti-slide piles.

关 键 词：抗滑桩 土压力分布 土压力计算 

分 类 号：TU432[建筑科学—岩土工程]