Method and system for analyzing horizontal dynamic interaction of adjacent pile foundations

Abstract

The embodiment of the invention discloses a method and a system for analyzing horizontal dynamic interaction of adjacent pile foundations. The method comprises the steps that S1, assumed conditions corresponding to an adjacent pile foundation horizontal dynamic interaction simplified mechanical model are given; S2, a dynamic balance equation of an active pile body unit is created based on an Eulerbeam and a Pasternak foundation model; S3, a relation equation of the horizontal vibration displacement and the corner of the the active pile body is created, and a corresponding displacement generalsolution is obtained; S4, the pile body horizontal vibration displacement, the pile body bending moment and the shearing force of the active pile are calculated; and S5, the dynamic displacement of adriven pile II caused by a driving pile I is calculated, and the interaction factor of the adjacent piles is calculated. According to the method and the system, the constraint effect of soil around the pile on the pile body can be better simulated; and meanwhile, the horizontal dynamic interaction of the adjacent pile foundations under the action of axial force is considered, the method can be suitable for the horizontal vibration problem of the adjacent pile foundations under the action of complex multidirectional loads, the research of a pile group interaction system in actual engineering is better met, and guidance and reference effects can be provided for the 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 interaction of adjacent pile foundations under the consideration of axial force based on Pasternak foundations. 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 and cannot reflect the continuity of the soil in the vertical layers, making 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 prese...

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Problems solved by technology

At present, the technology of pile-soil horizontal vibration using Pasternak foundation model has appeared, but this technology only considers the pile body bending and shear deformation of a single pile, although it can be used for the dynamic response of pile body horizontal vibration under simple harmonic excitation force. solution, but in actual engineering, pile foundations often appear in the form of pile groups

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