Adjacent large-diameter pile foundation horizontal dynamic response analysis method and system

Abstract

The embodiment of the invention discloses an adjacent large-diameter pile foundation horizontal dynamic response analysis method and system. The method comprises the steps of S1, giving assumed conditions corresponding to an adjacent large-diameter pile foundation horizontal dynamic interaction simplified mechanical model; S2, establishing a dynamic balance equation of a pile body unit of the large-diameter active pile; S3, creating a relation equation of the horizontal vibration displacement and the corner of the pile body of the large-diameter active pile, and obtaining a corresponding displacement general solution; S4, calculating the pile body horizontal vibration displacement, the pile body bending moment and the shearing force of the large-diameter active pile; and S5, calculating the dynamic displacement of the large-diameter passive pile II caused by the large-diameter active pile I, and calculating the interaction factor of the adjacent piles. According to the method, the horizontal dynamic interaction of the adjacent pile foundations under the action of axial force is considered at the same time, the method can be suitable for the horizontal vibration problem of the adjacent pile foundations under the action of complex multidirectional loads, research of a pile group interaction system in actual engineering is better met, and guidance and reference can be provided forthe pile foundation dynamic theory.

Description

technical field [0001] The invention relates to the technical field of pile-soil horizontal vibration, in particular to a method and system for analyzing the horizontal dynamic response of adjacent large-diameter piles based on the Pasternak model under the action of axial and lateral forces. Background technique [0002] At present, when solving the dynamic response problem of pile horizontal vibration, for the convenience of calculation, the soil around the pile is generally simplified to the Winkler model. However, the Winkler foundation model ignores the shear effect of the soil, which makes the calculation results not rigorous enough in theory. The Pasternak foundation model considers the shear effect of the foundation soil on the basis of the Winkler model, and the use of the Pasternak foundation model enables the pile-soil coupling system to simulate the actual engineering conditions more reasonably. At present, the classic Bernoulli-Euler theory is adopted for the p...

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Problems solved by technology

At present, the classic Bernoulli-Euler theory is used for the pile foundation model of slender rods. This theoretical model only considers the bending deformation of the pile body, and ignores the influence of the shear deformation of the pile foundation.

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