3D printed water-permeable pavement scale simulation device and method under action of runoff

Abstract

The invention discloses a 3D printed water-permeable pavement scale simulation device under the action of runoff. The device comprises a model box provided with an opening in the top, wherein a lower base course, an upper base course and a 3D printed water-permeable pavement are sequentially inside the model box from bottom to top, and the water-permeable pavement is transparent or translucent; and a section is obtained by scanning the concrete water-permeable pavement, and is reconstructed in a 3D printer to obtain the 3D printed water-permeable pavement, and a seepage port is formed in the bottom of the model box and is communicated with a collector. The interaction among rainwater runoff, sediment particles and the water-permeable pavement is studied comprehensively through a non-aqueous phase liquid migration law test and a non-aqueous liquid-wrapped sand transport law test to give the variation trend of movement speeds of the non-aqueous liquid and particles in a pore channel in each direction at different seepage flow velocities, and the experimental effect has good guiding significance.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a 3D printing permeable pavement scale simulation device and method under the action of runoff. Background technique [0002] Permeable pavement is also called porous pavement, including permeable concrete pavement and OGFC (open graded anti-skid wear layer) asphalt pavement. A large amount of rainwater seeps into the ground, thereby effectively reducing or eliminating urban storm flood disasters. High water permeability is one of the basic requirements for water-permeable pavements, but during the use of such roads, the water-permeable performance is often reduced due to the clogging of pores by non-aqueous liquids and sand particles, making it difficult for permeable pavements to perform drainage functions, and eventually evolve into As a non-permeable pavement, the service life is shortened, and the possibility of urban flooding and freeze-thaw disasters is increased. Existi...

AI Technical Summary

Problems solved by technology

High water permeability is one of the basic requirements for water-permeable pavements, but during the use of such roads, the water-permeable performance is often reduced due to the clogging of pores by non-aqueous liquids and sand particles, making it difficult for permeable pavements to perform drainage functions, and eventually evolve into It becomes a non-permeable pavement, which shortens the service life and increases the possibility of urban flooding and freeze-thaw disasters

Existing test devices usually use concrete pavement for testing, which has poor reproducibility, and, for non-aqueous liquids, it is prone to clogging problems; Migration law has done too many tests, resulting in poor accuracy of test data and low practicability

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