胡宗允
摘要:近几年,杭州道路路面问题频现,市民反应问题增多,因此如何有效减少坑洼路面的出现,是摆在我们每个工程建设从业人员面前亟需解决的问题。分析杭州市区城市道路坑洼路面形成的原因,主要从外界环境影响、设计施工环境影响、管理养护问题等方面分析,然后针对具体原因给出相应改善对策,减少坑洼路面的出现,提升杭州城市道路形象。
关键词:路面病害 环境 设计 施工 养护
Causes and Countermeasures of Pothole Pavement Formation on Urban Roads in Hangzhou City
HU Zongyun
(Hangzhou Municipal Engineering Group Co., Ltd., Hangzhou,Zhejiang Province,310006 China)
Abstract: In recent years, there have been frequent road pavement problems in Hangzhou, and the response of citizens has increased. Therefore, how to effectively reduce the appearance of potholes is a problem that needs to be solved urgently in front of each of our engineering construction practitioners. Analyze the reasons for the formation of potholes on urban roads in Hangzhou, mainly from the external environmental impact, design and construction environmental impact, management and maintenance issues, etc., and then provide corresponding improvement measures for specific reasons to reduce the appearance of potholes and improve Hangzhou City road image.
Key Words: Pavement disease;Environment;Design;Construction;Maintenance
近年来,杭州市区道路坑洼路面频现,屡遭市民抱怨投诉,因此如何有效减少坑洼路面的出现,是摆在我们每个工程建设从业人员面前亟需解决的问题。杭州城市道路多采用沥青路面的结构形式,城市沥青道路路面受外界自然环境以及车辆荷载的影响,病害的现象时有发生,严重影响城市道路开车的舒适性。较为典型的沥青路面病害主要有:裂缝类、松散类、沉陷、车辙、泛油等。根据上述典型路面的病害,综合分析杭州市区内沥青路面造成病害的原因并提出相关对策[1]。
1 病害原因分析
1.1 外界环境影响
1.1.1 高温作用
沥青材料对温度较为敏感,在高温条件下,尤其是夏季,沥青表面的温度可达55℃,接近沥青的软化点,高温作用下沥青路面易产生车辙等病害,并加快沥青老化。
1.1.2 水破坏
杭州气候多雨,沥青路面被雨水浸泡后,雨水渗入沥青内,并渗入沥青混凝土的孔隙中,经受车辆荷载和温度收缩的反复作用,逐渐使沥青从集料表面剥离,造成局部沥青混凝土松散。……