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ANALYSIS OF VERTICAL LOAD CAPACITY OF BENT PILE
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摘要: 桩体的设置常常发生一定的偏斜,对竖向承载力有一定的影响。通过对发生偏斜试桩的偏斜曲线分别按假设曲线和现场实测进行的对比分析,并把曲桩看作曲梁,根据曲梁理论对偏斜桩体进行了分析,建立了平衡方程和物理方程,分析了曲桩在竖向荷载作用下的变形和弯矩。得到以下结论:桩体由于施打而发生的弯曲在桩体中产生的残余应力可以忽略不计;桩顶竖向荷载作用下桩身的弯矩同桩的偏斜曲线有重要关系,桩顶处的曲率较大时,桩身的弯矩在工程中是不能忽视的。Abstract: The installed pile often has a certain degree of inclination.This will affect the vertical load capacity.It is analyzed the pile's curvature of assumption and in situ data.Based on the theory of curved beam,the bent pile is analyzed,and the equations of equilibrium and physics are built.Further,it is given the deflection and moment of the bent pile.Some conclusions are obtained.The residual stress in bent pile can be ignored.The curvature of batter pile has important influence on additional moment to bent pile under vertical load on top.When the radius of curvature on the upper segment of pile is small,the additional moment can not be ignored.
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Key words:
- bent pile /
- vertical load capacity /
- curved beam radius of curvature /
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