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SEISMIC ANALYSIS OF SINGLE END BEARING PILE

机译:单端承重桩的地震分析

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摘要

Research in the area of pile foundation under seismic condition are still lacking though it is extremely important topic in the area of geotechnical engineering. In this paper, a comprehensive analysis of end bearing pile under seismic excitation is reported. The case of single end bearing pile without mass at the top of the pile is considered for the analysis. A seismic excitation of harmonic nature is considered at the base of the end bearing pile for the analysis. Based on Winkler model, a differential equation for pile displacement as a function of depth and time has been obtained by considering the equilibrium equations of a proposed mathematical model. Using the boundary conditions, the pile displacement as a function of depth and time is obtained. Also the variations of rotation, shear force and bending moment with pile depth at a particular time are obtained. An illustrative example shows the results of the analysis. The positions of maximum displacement, rotation, shear force and bending moment along the depth of the pile for a given seismic excitation can be found out.
机译:尽管在岩土工程领域中这是极为重要的课题,但在地震条件下的桩基领域仍缺乏研究。本文对地震激励下的端承桩进行了综合分析。分析时考虑了单端承重桩在桩顶没有质量的情况。在端承桩的底部考虑了谐波性质的地震激励以进行分析。在Winkler模型的基础上,通过考虑所提出的数学模型的平衡方程,获得了桩位移随深度和时间变化的微分方程。利用边界条件,得出桩的位移与深度和时间的关系。还可以得出特定时间的旋转,剪切力和弯矩随桩深的变化。一个说明性示例显示了分析结果。可以找到在给定地震激励下沿桩深的最大位移,旋转,剪切力和弯矩的位置。

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