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Three-dimensional crosslinking network-based calculation method of dynamic mechanical parameters of asphalt mixture

A technology of asphalt mixture and three-dimensional cross-linking, which can be used in calculation, computer-aided design, electrical and digital data processing, etc., and can solve problems such as deviation of results.

Active Publication Date: 2018-07-31
SOUTHEAST UNIV
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Problems solved by technology

This will directly lead to large deviations in the results when studying the structural dynamic response caused by the application of dynamic loads

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  • Three-dimensional crosslinking network-based calculation method of dynamic mechanical parameters of asphalt mixture
  • Three-dimensional crosslinking network-based calculation method of dynamic mechanical parameters of asphalt mixture
  • Three-dimensional crosslinking network-based calculation method of dynamic mechanical parameters of asphalt mixture

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Embodiment Construction

[0074] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0075] The research on the constitutive model of asphalt mixture provides a directional guidance for analyzing the viscoelastic properties of polymer matrix composites from the molecular chain level. In particular, how to effectively use the stress-strain results under dynamic loads to reasonably evaluate the viscoelastic properties of asphalt mixtures in three-dimensional space has gradually become the main direction in the field of road materials. However, how to establish a three-dimensional cross-linking network model, how to use the upper cross-linking network model to conduct research on the molecular chain level, and realize the expansion from two-dimensional ...

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Abstract

The invention discloses a three-dimensional crosslinking network-based calculation method of dynamic mechanical parameters of an asphalt mixture. A three-dimensional network linking model is established according to stress-strain characteristics of different components, load test data are combined, corresponding dynamic mechanical functions of the asphalt mixture are obtained through fitting parameters of energy of all single-chain structures in the network linking model under different stress-strain load states, and then the dynamic mechanical parameters thereof are calculated and determined.According to the method, influences of the different components of the asphalt mixture are fully considered, three-dimensional crosslinking networks are respectively and independently established forthe different components in the asphalt mixture, and influences of the different components on the overall stress-strain characteristics of the mixture are evaluated thereby. According to the method,macroscopic performance characterization of the material under dynamic load action can be linked from the molecular chain energy of the microstructures through establishment of the crosslinking networks, expansion from a microlevel to a macrolevel can be realized, and fitting results are more precise. At the same time, dependence on the test data is also accordingly reduced, test costs are lower,and the method is suitable for promotion.

Description

technical field [0001] The invention relates to the technical field of road materials, in particular to a calculation method for dynamic mechanical parameters of asphalt mixture. Background technique [0002] Asphalt mixture is a commonly used road engineering material, and its dynamic mechanical properties in actual use usually contain the characteristics of both elastic solid and viscous fluid. Under the action of load, it will reflect the deformation of two different mechanisms of elasticity and viscosity at the same time. Therefore, the analysis of its viscoelastic properties has always been an important content in the study of the properties of asphalt mixture materials. [0003] As a multi-phase body composed of pores, asphalt, aggregates, etc., due to the differences in the types of internal components, the properties of different phases of the asphalt mixture will affect the comprehensive viscoelastic properties of the overall mixture. [0004] On the one hand, pol...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/13G06F2119/06
Inventor 张磊谌偲翔
Owner SOUTHEAST UNIV
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