立交桥桥面防水层性能研究及应用

THE PROPERTIES RESEACHES AND APPLICATION OF WATER-PROOF LAYER IN THE DECK OF INTERCHANGE

在城市立交桥柔性防水层上铺筑沥青混合料是北京市近年来针对桥面渗水问题所进行攻关专题研究（择优选用防水材料，合理设计面层结构，桥面渗水问题已得到较好解决）。从北京市立交桥防水发展状况出发，通过旧立交桥被损、渗漏调查入手，进行大量室内模拟试验，提出防水材料与沥青混合料成型后的整体粘结、无破损、不渗水试验方法、施工工艺和有关检测指标。

In order to improve the properties of water-reproof layer in the deck of interchange,an intensive investigation of the causes which result in the damage and leakage Of interchanges in Beijing has been carried out 'as well as extensive mock experiments at laboratory have been completed' As a result of this study,the materials and construction technology for making no damage,no leakage,water-proof layer that can bond to the mixture of asphalt completely is proposed. In additoon,the test method and relevant requirement for quality control are suggested.