承重阻滑桩受力影响因素分析  

Influencing Factors Analysis for Mechanical Behavior of Load-Bearing and Anti-slide Piles

作　　者：邬龙刚[1] 曹旭华[1] 赵明华[2] 

机构地区：[1]广东省建筑设计研究院,广东广州510010 [2]湖南大学岩土工程研究所,湖南长沙410082

出　　处：《公路工程》2009年第2期16-21,117,共7页Highway Engineering

基　　金：国家自然科学基金资助项目(50578060)

摘　　要：承重阻滑桩在山区高速公路建设中应用广泛,具有承重与阻滑双层作用,其受力性状远比抗滑桩和平地上受荷桩复杂。基于p—y曲线法的有限差分解,对影响承重阻滑桩内力与位移的桩顶竖向荷载、桩自由长度、桩径(刚度)、滑坡推力大小、滑坡推力分布形式5个因素进行计算。通过对计算结果的分析探讨,得到一系列的结论对承重阻滑桩的实际应用有一定的指导作用。Load-bearing and anti-slide piles have a popular application in the construction of freeway in mountainous area, it has double function： not only bearing the load from the superstructure but also counteracting landslide-thrust from the side of pile foundation, and the mechanical behavior of pile is much more complex than anti-slide pile or simplex inclined-loading pile. Adopting finite difference solution based on p - y curve method, five factors such as the vertical load on pile top,the free length of pile, the pile diameter （rigidity of pile） , the size of the landslide-thrust, the distribution of landslide-thrust which effecting the inner force and displacement of the load-bearing and anti-slide pile is calculated. Analyzing the calculation result, a series of conclusions is obtained, and it has certain guidance functions to engineering application for the load-bearing and anti-slide piles.

关 键 词：桩基础 承重阻滑桩 P-Y曲线法 内力计算 影响因素分析 

分 类 号：TU473[建筑科学—结构工程]