摘要
通过室内试验认为,含水量的变化将会引起红粘土路基强度的显著变化,因此水分迁移是造成红粘土路基病害的主要原因之一。为避免出现路基内部含水量的增加,在路基填筑层上表面覆盖薄膜等防水材料,在填挖交界处铺设无砂混凝土层,确保填挖交界地下水的排出等防排水措施极为必要。并结合水分扩散和冷凝迁移是引起路基运营后软化的主要原因,提出了可防水分扩散和冷凝迁移的新方法"一种可防路基软化的路基结构",为工程实践提供参考。
Through indoor test,the change of water content will cause significant changes in the red clay subgrade strength,so the moisture migration is caused by the red clay roadbed disease is one of the main reasons.In order to avoid the interior moisture content increasing,in the subgrade filling layer covering the upper surface film waterproof material,the cut and fill at the junction of paving concrete without sand layer,ensure the fill and excavation at the junction of groundwater discharge and other drainage measures are very necessary.Combined with the moisture diffusion and condensation of migration is caused by Subgrade after operation to soften the main reason,put forward to prevent moisture diffusion and condensation migration new method ＂capable of preventing the subgrade soft roadbed structure＂,provide reference for engineering practice.
出处
《公路工程》
北大核心
2013年第1期40-43,共4页
Highway Engineering
关键词
红粘土
路基病害
水分迁移
预防措施
red clay
roadbed
moisture transfer
preventive measures
