Large-diameter single-pile horizontal vibration analysis method considering axial force effect

Abstract

The invention provides a large-diameter single-pile horizontal vibration analysis method considering an axial force effect. According to the large-diameter single-pile horizontal vibration analysis method considering the axial force effect, a large-diameter single pile is simplified into a Timoshenko beam model, and a mechanical system model considering pile body shear deformation and the pile periphery soil body shear effect at the same time is provided. Besides, the pile top considers the influence of the axial force under the action of the horizontal load, and comprehensively considers theaction of the two loads, so that the method can be suitable for the horizontal vibration problem of the large-diameter single pile under the action of the complex multi-directional load, and the pile-soil coupling interaction of the foundation pile under the action of the complex load in actual engineering can be better simulated; a foundation can be laid for a pile foundation vibration theory; according to the method, the influence of pile body shear deformation, the influence of pile periphery soil body shear deformation and stress deformation influence factors related to a pile foundation in actual engineering are also considered while the complex load effect of the pile top is considered; based on the model provided by the invention, theoretical guidance and reference effects can be better provided for foundation pile deformation and an internal force change rule of the pile foundation under the action of a dynamic load.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a method for analyzing the horizontal vibration of a large-diameter single pile considering the action of axial force. Background technique [0002] With the rapid development of bridge engineering and high-rise buildings in our country, pile foundations are widely used, and the force analysis of foundation piles under complex multi-directional loads is becoming more and more important. At present, when solving the dynamic response problem of pile horizontal vibration, for the convenience of calculation, the soil around the pile is simplified to the Winkler model. The Winkler foundation model ignores the shear effect of the soil and cannot reflect the continuity of the soil between layers in the vertical direction, making the calculation results not rigorous enough in theory. Based on the Winkler model, the two-parameter foundation model considers the shear effect of the foundat...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shear effect of soil that the Winkler foundation model in the prior art ignores, can not reflect the continuity of soil between each vertical layer; Bernoulli-Euler theoretical model only considers pile body bending deformation, and ignores The defect of the influence of shearing deformation, the present invention provides a kind of large-diameter single pile horizontal vibration analysis method that considers the action of axial force

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