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Multilayer Displacement Response Determination Method Considering Interlayer Conditions and Transverse Isotropy

A transversely isotropic, displacement-response technology, applied in special data processing applications, constraint-based CAD, instruments, etc., can solve problems affecting dynamic response calculation results, slow calculation speed, calculation instability, etc., to ensure calculation Stability, guaranteed accuracy, and increased scope of application

Active Publication Date: 2022-07-08
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a method for determining the displacement response of a multi-layer dynamic system considering the interlayer contact conditions and transverse isotropy, so as to solve the problem of the slow calculation speed and instability of the existing methods, and the current The mechanical model of the layered continuous elastic system does not match the actual pavement structure, which affects the calculation results of the dynamic response

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  • Multilayer Displacement Response Determination Method Considering Interlayer Conditions and Transverse Isotropy
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  • Multilayer Displacement Response Determination Method Considering Interlayer Conditions and Transverse Isotropy

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[0013] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0014] The embodiment of the present invention provides a method for determining the dynamic response of a multi-layer dynamic system considering interlayer contact conditions and transverse isotropy, such as figure 2 shown, follow the steps below:

[0015] Step S1, determine the material parameters of an N (N≥1) layered pavement system, the material parameters include: the horizontal modulus E of the nth (1≤n≤N) layer hn , vertica...

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Abstract

The invention discloses a multi-layer displacement response determination method considering interlayer conditions and transverse isotropy. Including: horizontal modulus, vertical modulus, horizontal Poisson's ratio, vertical Poisson's ratio, horizontal viscosity coefficient, vertical viscosity coefficient, interlayer slip coefficient of two adjacent layers, density and thickness; then for N-layer layered pavement Dynamic loads are applied to the surface of the system, and the pavement mechanics model to which the current N-layer layered pavement system belongs is determined according to the number of layers of pavement structural layers and whether there is rigid bedrock, and the calculation is performed according to the material parameters of different structural layers of the current N-layer layered pavement system. The displacement response solution of the pavement mechanics model to which it belongs in the Laplace-Hankel domain, and then the surface displacement response of the current N-layer layered pavement system in the time domain is calculated. The calculation speed is fast, the calculation stability is good, and the calculation result is accurate.

Description

technical field [0001] The invention belongs to the technical field of road engineering, and relates to a method for determining the displacement response of a multi-layer dynamic system considering interlayer contact conditions and transverse isotropy. Background technique [0002] The calculation of the mechanical response of the multi-layered dynamic system has always been a research hotspot in pavement mechanics, and it is also a difficult problem that needs to be solved to achieve accurate modulus inverse calculation. At present, FWD (Falling Weight Deflectometer, Falling Weight Deflectometer) is commonly used to test the performance of pavement structure, and the inverse calculation of modulus is also realized by relying on pavement mechanics model and parameter adjustment algorithm on the basis of FWD field test data. Therefore, to achieve accurate inverse calculation, a fast and accurate mechanical response calculation method is required. In the mechanical calculati...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/13G06F30/23G06F111/04G06F119/14
CPCG06F30/13G06F30/23G06F2111/04G06F2119/14Y02T90/00
Inventor 张军辉范海山刘杰张石平
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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