基于低碳视角的透水慢行系统结构生态效果评价  

Evaluation of Ecological Effect of Permeable Slow-traffic System Based on Low-carbon Perspective

作　　者：李满良[1] 陈姣[1] 王朝辉[1] 狄升贯[2] 

机构地区：[1]长安大学公路学院,陕西西安710064 [2]天津市市政工程设计研究院,天津300051

出　　处：《公路交通科技》2015年第4期40-44,51,共6页Journal of Highway and Transportation Research and Development

基　　金：中央高校基本科研业务费专项资金项目(2014G1211003)

摘　　要：为完善透水慢行系统结构生态效果评价体系,通过渗透系数试验、现场渗透试验、吸声系数试验及路面温度调查,研究透水慢行系统的排水效果、降噪效果和降低城市热岛效应,并提出相应分级标准。结果表明:透水慢行系统生态效果明显,沥青混合料的渗透系数随空隙率和连续空隙率的增大而增大;无砂混凝土与级配碎石叠合基层的渗透速率最快,级配碎石基层次之,水泥稳定碎石和级配碎石叠合基层最慢;沥青混凝土吸声系数峰值与均值总体随空隙率增大而提高,相同连续空隙率下,小粒径吸声优于大粒径,相同空隙率下小粒径性能反而下降,透水性混凝土的吸声系数随空隙率增大而增大;透水路面路表与中面层温度差值远远大于其他几种路面结构。In order to improve the evaluation system of ecological effect of permeable slow-traffic system, the drainage effect, noise reduction effect and heat island effect reduction of permeable slow-traffic system are studied by permeability coefficient test, field permeability test, absorption coefficient test and pavement temperature survey, and the corresponding grading criteria is proposed. The result shows that （1） the permeable slow-traffic system has significant ecological effect, the permeability coefficient of asphalt mixture increases with the increase of air voids and continuous air voids of asphalt mixture ; （2） the base of non-fines concrete combined with graded gravel penetrates the most quickly, follows by graded gravel base, then the base of cement stabilized macadam combined with graded gravel; （3） the peak acoustical absorptivity and average value of asphalt concrete rise with the increase of air voids; （4） under the same continuous air voids, the asphalt concrete with smaller particle size has larger acoustical absorptivity, while its acoustical absorptivity decrease under the same air voids, and the acoustical absorptivity of permeable concrete increases with the rising of air voids ; （5） the temperature difference between pavement surface and middle course of permeable pavement is much larger than that of other types of pavement structures.

关 键 词：道路工程 透水路面 试验 慢行系统 生态效果 低碳视角 

分 类 号：U416.211[交通运输工程—道路与铁道工程]