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沥青面层层间粘结状况对水损坏的影响分析

, PP. 13-17

Keywords: 道路工程,沥青路面,BISAR,层间粘结,应力

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Abstract:

假设各路面结构层处在光滑和连续状况下,采用BISAR3.0程序,计算了8种不同层间粘结状况下沥青路面结构的受力情况,分析不同层间粘结状况对路面结构受力的影响。计算结果表明,只要沥青面层内部存在层间的不连续,会在相应部位产生拉应力和剪应力集中,使得该部位的路面结构受力状况非常恶劣;同时,水分易于进入层间薄弱带,沥青面层内部的储水加上各项应力在此集中加剧了沥青路面水损坏的发展,致使水损坏的路面出现了层间断开的现象。

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