摘要
为了满足我国北方半干旱地区海绵城市建设需求,针对传统排水沥青路面在水稳定性和排水耐久性等方面存在固有缺陷,采用SBS高黏改性沥青结合料,研发了新型多层结构排水沥青铺装,并以济南为研究区域,开展了2a、5a、10a、20a、50a一遇的5种降雨强度下排水沥青铺装结构在正常使用和堵塞后2种工况下的人工降雨下渗试验。排水沥青路面路用性能评估结果表明:综合来看,正常工况下传统双层铺装和新型复合铺装(孔隙率23%)拥有较好的下渗排水能力;堵塞处理后各铺装下渗流速都有一定程度降低,两种传统铺装的下渗历时均出现不同程度延长,但两种新型铺装性能更稳定,且新型多层复合排水沥青铺装(孔隙率23%)相较传统结构铺装排水能力更加稳定,且抗堵塞能力最强,能够适用于北方半干旱区海绵城市排水沥青铺装建设。
In order to meet the demand of the sponge city construction in semiarid area of northern China in view of the inherent defects of traditional drainage on water stability of asphalt pavement and drainage durability aspects, adopts the glue high SBS modified asphalt binder, developed a new drainage asphalt pavement with multilayer structure taking jinan as the study area, carried out for 2 years, 5 years, 10 years, 20 years, 50 years of 5 kinds of rainfall intensity under drainage asphalt pavement structure under normal use and blocked two conditions of artificial rainfall infiltration test. The evaluation results of performance of drained asphalt pavement show that: under normal working conditions, traditional double-deck pavement and new composite pavement(with a void ratio of 23%) have better infiltration and drainage capacity. After the clogging treatment, the infiltration velocity of each pavement decreased to a certain extent, and the two diachronic periods were extended to different degrees, but the performance of the two new pavement was more stable. Compared with the traditional structure pavement, the new multi-layer composite drainage asphalt pavement(void ratio 23%) is more stable in drainage capacity and has the strongest anti-blocking ability. It can be applied to the drainage asphalt pavement construction of sponge cities in the semi-arid areas of north China.
作者
胡高辉
朱少成
杨涛
周鹏飞
孙海波
刘春慧
李国旗
HU Gaohui;ZHU Shaocheng;YANG Tao;ZHOU Pengfei;SUN Haibo;LIU Chunhui;LI Guoqi(College of Hydrology and Water Resources,Hohai University,Nanjing 210098,Jiangsu,China;Nari Group Corporation of State Grid Electric Power Research Institute,Nanjing 210000,Jiangsu,China;Tongzhou Municipal Bureau of Water Resources,Nantong 226361,Jiangsu,China;Qilu Transportation Development Group Co.,Ltd.,Jinan 250000,Shandong,China;Shandong Pronncial Communications Planning and Design Institute,Jinan 250000,Shandong,China)
出处
《水利水电技术》
北大核心
2019年第S02期7-16,共10页
Water Resources and Hydropower Engineering
基金
山东省交通规划设计院科技创新项目“北方半干旱区海绵城市雨水循环利用新技术研究与实践”(2017-K2-008)
宁夏回族自治区重点研发项目“面向河长制的宁夏河湖健康评价与决策支持系统研发与应用”(20175046802).
关键词
SBS高黏改性沥青
排水沥青铺装
下渗试验
降雨强度
堵塞
SBS high-viscosity asphalt
drainage asphalt pavement
infiltration experiment
rainfall intensity
clogging
