钢桥桥面沥青铺装结构的高温浸水车辙直道试验研究

Experimental Research on Asphalt Pavement Structure on Steel Bridge Deck by Immersion Rut Linear Track Tests at High Temperature

选择国内外有代表性的6种钢桥桥面铺装结构体系进行高温浸水车辙直道试验。试验结果表明:某些方案的高温浸水车辙的结果与室内试验结果不尽一致。通过对试验结果深入分析,发现钢桥桥面铺装层厚度和混合料粒径的匹配是造成沥青混合料使用性能优劣的重要原因,进而提出表面层混合料厚度和粒径的适合匹配,这对钢桥桥面铺装结构的完善具有实用价值。

Six kinds of pavement structural systems of steel bridge deck ware chosen which are typical at home and abroad, and the immersion rut linear track tests at high temperature ware conducted. The test results show that the high temperature strength of the alternative structural systems from the test are not the same as that from laboratory test. On the basis of the test results and analyses it is found that the matching relationship between the layer thickness and the maximum aggregate size of mixtures is of importance, so that suggestions for matching relationship are put forward. These researches will have practical values for perfecting pavement structural systems of steel bridge deck.