高桩码头桩基在倾斜泥面中的水平承载性能研究  

Horizontal bearing capacity of pile foundation in high-piled wharf with inclined ground surface

作　　者：刘兹胜[1] 卓杨[1] 时蓓玲[1] 周国然[1] 

机构地区：[1]中交上海三航科学研究院有限公司,上海200032

出　　处：《岩土工程学报》2010年第12期1861-1867,共7页Chinese Journal of Geotechnical Engineering

基　　金：中国交通建设集团科技研发项目(20051A-0805)

摘　　要：现有的高桩码头设计方法在进行桩基水平承载力计算时通常是基于普通天然地基的水平泥面假设,而对泥面倾斜情况下,桩基的水平承载力计算至今没有一套成熟的计算方法可循。为揭示高桩码头排架在斜坡面上的工作机理,通过室内模型试验系统研究了单桩在斜坡面上的水平承载特性。通过对室内模型试验结果分析,提出了基于泥面水平时桩基水平受力性能来确定不同泥面坡度下桩的水平承载性能的修正计算公式,包括桩身最大弯矩、桩身最大弯矩点位置、桩顶位移、泥面位移以及考虑泥面坡度和桩深度的土弹簧刚度修正公式,为处于倾斜泥面的高桩码头桩基设计计算提供了理论依据。For calculating the lateral bearing capacity of pile foundation,the existing high-piled wharf design method is always based upon the hypothesis of horizontal ground surface of common natural foundation.However,there has been no mature methods for the lateral bearing capacity of pile foundation with inclined ground surface.In order to reveal the working mechanism of high-piled wharf pile foundation on slope,the lateral bearing behavior of a single pile on slope through laboratory model tests is studied.Through analyzing the test results,a series of modified calculation formulas are put forward to confirm the lateral bearing capacity of different inclined grounds based on the pile performances with horizontal ground surface,including the maximum moment of pile and its location,displacement of pile-top and ground surface.Meanwhile,a modified formula of soil spring stiffness considering both ground surface slope and pile depth is derived,and it provides a theoretical basis for designing and calculating the foundation of high-piled wharf with inclined ground surface.

关 键 词：高桩码头 桩基 倾斜泥面 水平承载性能 

分 类 号：TU473.11[建筑科学—结构工程]