聚苯乙烯泡沫塑料保温板埋置深度研究

Research on the Buried Depth of Polystyrene Foam Insulation Board

冻土路基下铺设的保温材料挤塑聚苯乙烯泡沫塑料保温板不仅具有良好的阻温隔热效果,而且其吸水率也较小,能很好地隔水,有效阻绝了冻土路基下地下水分的迁移,最终达到减少路基病害的目的。文章通过数值模拟及理论分析,结合实际施工过程中所选取的施工材料,综合考虑路面弯沉效应,研究聚苯乙烯泡沫塑料保温板的埋置深度,得出铺设在施工路基基础面之下深度约30~40cm处为最佳深度。

The extruded polystyrene foam insulation board laid under permafrost roadbed has not only the good temperature insulation effect,but also its water absorption is smaller,which has better waterproofing,can effectively block the migration of groundwater under permafrost roadbed,and ultimately can achieve the purpose of reducing the roadbed diseases.Through numerical simulation and theoretical analysis,combined with the construction materials selected during actual construction,and consid-ering the deflection effect of road pavement,this article studied the buried depth of polystyrene foam insulation boards,and obtained that about 30~40cm laid under the foundation surface of construction roadbed is the optimum depth.