摘要
当前我国各类大型工程建设对桩基设计提出了更高的要求,桩基水平承载计算是一个突出问题。从传统水平受荷桩分析方法入手,推导考虑侧壁摩擦力的桩基水平承载挠曲微分方程,提出小变形下考虑摩擦效应的桩基水平承载计算方法(fm法)。编制相应的分析程序,通过算例验证方法的正确性和有效性。进一步比较传统m法与本文fm法的异同,并深入探讨尺寸效应对桩基水平承载的影响,可供工程参考。
At present,all kinds of large-scale construction projects in China put forward strict requirements on the design of pile foundations,and the lateral bearing analysis of piles is a prominent problem. A new differential equation for the pile deflection containing the side frictions was established based the conventional method of analysis to the laterally loaded piles. The fm-method of calculating the lateral bearing capacity of piles under small deformation was proposed with the consideration of friction effect. In order to validate the proposed method,the corresponding Matlab program and some examples of laterally loaded piles were used. The effectiveness of the method was reviewed. Additionally,the comparison of the calculated results from the original m-method and the proposed fm-method was made. The influence of the scale effect on the lateral bearing characteristics of pile foundations was obtained.
引文
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