德香高速公路路面风积沙严重路段安全护栏选型及处置效果分析

Selection and disposal effect analysis of safety guardrail for road surface aeolian sand in De-Xiang Expressway

针对德令哈至香日德高速公路高填方河滩路段在高速公路通车后风积沙情况比较严重的现象,为了有效缓解风积沙对行车造成的安全隐患,分析了原有波形梁钢护栏型式造成道路风积沙现象原因。根据该路段的路基断面型式和护栏安全设施要求,提出了在道路中央分隔带采用梁柱式方钢护栏和侧护栏采用缆索护栏的处置方案,通过持续跟踪观测和走访高速公路养护清沙人员,该处置方案对于一般性风沙天气,风沙过路顺畅,没有存在积沙现象;在恶劣性大风沙天气环境下,极大减少了风沙的堆积程度,达到了缓解严重积沙的路面情况的预期目标。

According to the phenomenon that the Eolian sand in the high embankment of Delinha-Xiangride Expressway is more serious after the opening of expressway,in order to effectively mitigate the safety hidden trouble caused by the wind-blown sand,the paper analyzes the causes of the wind-blown sand phenomenon caused by the original corrugated beam steel guardrail. According to the roadbed section type of the road section and the safety equipment requirements of the guardrail,this paper puts forward a method of using cable guardrail in the central separating belt of the road,which is used for the steel bar and side guardrail,through continuous tracking observation and visits to the expressway to maintain the sand-clearing personnel,the disposal plan for the general sandstorm weather,smooth sand crossing,there is no accumulation of sand phenomenon. In the severe sandstorm environment,the sand accumulation degree is greatly reduced,and the expected target of alleviating the serious sand-accumulating pavement condition is achieved