多孔混凝土用于重载交通沥青路面基层的结构设计
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摘要
针对高寒地区重载交通水泥稳定碎石基层沥青路面存在的水损害问题,采用具有较大孔隙率和较高强度的多孔混凝土作为沥青路面的排水基层。结合多孔混凝土的刚性特征,初拟路面结构,采用Hpds软件对多孔混凝土基层沥青路面结构进行计算和验算,并分析了其用作高寒地区沥青路面基层的可行性。最后与水泥稳定碎石基层沥青路面做了对比。结果表明,孔隙率为15%的多孔混凝土作为高寒地区沥青路面基层,不仅能够起到排除路面内部水的功能,而且能够满足重载交通的需求。
Facing the problem of water damage on heavy traffic asphalt pavement of cement stabilized macadam base in cold area,the paper brings froward porous concrete with larger porosity and higher strength can be used as basement. Combined with the rigid characteristics of porous concrete,pavement structure is designed and calculated by software of Hpds,and the feasibility of porous concrete for heavy traffic asphalt pavement is analyzed,compared with cement stabilized macadam base at the same time. The results show that 15% porosity of porous concrete is not only can exclude out the water from internal the pavement,but also can meet the needs of heavy traffic load.
Facing the problem of water damage on heavy traffic asphalt pavement of cement stabilized macadam base in cold area,the paper brings froward porous concrete with larger porosity and higher strength can be used as basement. Combined with the rigid characteristics of porous concrete,pavement structure is designed and calculated by software of Hpds,and the feasibility of porous concrete for heavy traffic asphalt pavement is analyzed,compared with cement stabilized macadam base at the same time. The results show that 15% porosity of porous concrete is not only can exclude out the water from internal the pavement,but also can meet the needs of heavy traffic load.
引文
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[7]郑木莲,陈拴发,王秉刚.基于正交试验的多孔混凝土配合比设计方法[J].同济大学学报(自然科学版),2006,36(10):1319-1323.
[8]JTG D50—2006,公路沥青路面设计规范[S].
[2]张兴梅,徐聪.多孔沥青混合料老化及水稳定性研究[J].公路工程,2015,40(6):71-76.
[3]程文静.半刚性基层沥青路面早期病害及其防治研究[D].济南:山东大学,2013.
[4]Stinchcombe H.K,White M.H Universal approximation of an unknown mapping and its derivatives using multilayer forward networks[J].Neural Network,1990,3(3):551-560.
[5]王中合.多孔改性水泥混凝土干温缩性能研究[J].交通标准化,2014(11):99-101.
[6]郑木莲.多孔混凝土排水基层研究[D].西安:长安大学,2004.
[7]郑木莲,陈拴发,王秉刚.基于正交试验的多孔混凝土配合比设计方法[J].同济大学学报(自然科学版),2006,36(10):1319-1323.
[8]JTG D50—2006,公路沥青路面设计规范[S].