透水路面在降低噪音、提高交通安全,保护城市水环境。然而,由于运输货物的溢出,路面上的污染物,车辆磨损产生的沉积物,当这些污染物进入透水路面内部时,自然沉降会导致堵塞的风险。及时养护透水性能可有效解决透水路面因堵塞造成的环境性能下降问题。因此,探索透水路面堵塞模式可以支持确定维修时间。在本文中,根据实际道路堵塞情况制定了模拟堵塞材料等级。根据自行开发的透水路面堵塞模拟器,对透水路面的堵塞行为进行了全面探索,考虑外部条件,混合比例,结构组合,并考虑长期堵塞情况。此外,通过改变降雨强度和堵塞颗粒大小,模拟了外界条件对堵塞模式的影响。此外,渐变的影响,空隙率,标称最大粒径,并对过水断面的抗堵塞性进行了研究。确定了不同结构下的堵塞敏感粒径。结果表明,水头高度是影响堵塞行为的关键因素。较大的降雨强度和水头高度会导致更严重的堵塞。标称最大骨料粒径的增加有利于透水路面的抗堵塞能力。此外,小粒径的堵塞材料更容易引起结构堵塞。最后,提出了堵塞程度的评价指标,将透水路面的堵塞程度分为轻度,中度,和严重。研究可以支持合理化,情报,便于透水路面养护时机的决定。同时,对推广应用和性能维护具有关键意义。
Permeable pavement is superior in functions such as reducing noise, improving traffic safety, and protecting urban water environment. However, contaminants on the pavement due to spillage of transported goods, deposits from vehicle wear and tear, and natural settlement can cause the risk of blockage when these contaminants enter the interior of the permeable pavement. Timely maintenance of permeable performance can effectively solve the degradation of environmental performance of permeable pavement caused by clogging. Consequently, exploring permeable pavement clogging patterns can support determining the timing of maintenance. In this paper, simulation clogging material gradations were formulated based on actual road clogging conditions. According to the self-developed permeable pavement clogging simulator, the clogging behavior of permeable pavement was comprehensively explored, taking external conditions, mix proportion, structural combination, and long-term clogging conditions into consideration. Moreover, the effect of external conditions on the clogging pattern was simulated by varying the rainfall intensity and clogging particle size. Furthermore, the effects of gradation, void rate, nominal maximum particle size, and the overwater section on the clogging resistance were investigated. The clogging-sensitive particle size under different structures was determined. It is demonstrated that the water head height is the crucial factor on the clogging behavior. Greater rainfall intensity and water head height lead to more severe clogging. The increase of nominal maximum aggregate size is beneficial to the anti-clogging ability of permeable pavement. Also, the clogging material with small particle sizes is more likely to cause structural clogging. Finally, the evaluation index of clogging level was put forward, which divides the clogging level of permeable pavement into mild, moderate, and severe. The research can support the rationalization, intelligence, and convenience of permeable pavement maintenance timing decisions. Meanwhile, there is key significance to the promotion application and performance maintenance.