为探明聚丙烯仿钢纤维-硅灰改性透水混凝土的力学特性及透水性能，将聚丙烯仿钢纤维和硅灰掺入透水混凝土中，制备成一种聚丙烯仿钢纤维-硅灰改性透水混凝土，通过正交试验，采用极差法分析和微观电子显微镜扫描、CT扫描等方法，研究了硅灰、水胶比、减水剂用量以及纤维的形状、长度、掺量对透水混凝土的性能影响，并分析其内部的微观状态。研究结果表明：硅灰的掺量为10%、水胶比为0.3、减水剂0.9%时，透水混凝土的力学性能最优，且透水性能良好；以此为基础并掺入波浪型纤维且长度为30 mm、掺量为6 kg/m³时的透水混凝土力学性能最优，抗压强度随纤维长度、掺量的增加先升后降，有效孔隙率随着纤维的长度和掺量的增加呈线性减小。

To investigate the mechanical properties and permeability of polypropylene steel-like fiber-silica fume modified permeable concrete, polypropylene steel-like fibers and silica fume were incorporated into permeable concrete to develop a type of modified permeable concrete. Through orthogonal experiments, range analysis, and techniques such as scanning electron microscopy and CT scanning, the effects of silica fume, water-to-binder ratio, superplasticizer dosage, as well as the shape, length, and dosage of fibers on the performance of permeable concrete were studied, along with an analysis of its internal micro-structure. The results indicate that when the dosage of silica fume is 10%, the water-to-binder ratio is 0.3, and the superplasticizer dosage is 0.9%, the mechanical properties of the permeable concrete are optimal, and it exhibits good permeability. Furthermore, when incorporating wavy fibers with a length of 30 mm and a dosage of 6 kg/m³, the mechanical performance of the permeable concrete is further optimized. The compressive strength first increases and then decreases with increasing fiber length and dosage, while the effective porosity decreases linearly as the fiber length and dosage increase.