Permeability evaluation method of permeable asphalt pavement based on fluid-solid coupling analysis
A technology of permeable asphalt and permeability performance, which is applied to the analysis of materials, permeability/surface area analysis, suspension and porous material analysis, etc. It can solve problems such as difficult to popularize and apply, ignore the permeability performance, and the conclusion is too macroscopic, so as to save time and cost, intuitive penetration performance, and efficient evaluation of the effectiveness of the method
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[0040] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0041] The embodiment of the present invention proposes a method for evaluating the permeability of permeable asphalt pavement based on fluid-solid coupling analysis, such as figure 1 As shown, the method includes the following steps:
[0042] Step 10) Carry out an indoor penetration test to determine the material parameters and hydrological parameters of each structural layer of the permeable asphalt pavement. The material parameters include density, porosity, modulus and Poisson's ratio; the hydrological parameters include saturated permeability coefficient, residual volume water content and saturated volume water content.
[0043]Step 20) Use the Van Genuchten material model and the Mualem permeability model to characterize the dynamic relationship between the volumetric water content and the unsaturated permeability coefficient of each str...
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