Optimization of anti-clogging pervious pavement structure based on numerical evaluation

Based on numerical simulation methods, the anti-clogging performance of various pervious pavement structures were investigated. Different structure models built to analyze effects different structures, top layer thicknesses and aggregate gradations performance. The results shown that compared with single-layer structure, double-layer has better maintenance efficiency. most serious clogging can be hold within 3 mm superficial where particles more easily cleaned out. Smaller thickness lead a And size should selected only considering particle transport or shielding effect, based gradation local particles. In addition, above findings, new excellent been developed, including number parallel vertical variable diameter tubular channels, upper is smaller than lower layer.