东南亚地区某市政道路沥青路面龟裂成因分析

针对东南亚地区某市政道路沥青路面龟裂，采用贝克曼梁进行弯沉检测，全面分析沥青路面整体承载能力；结合路面取芯检测与路基开挖探查，分析沥青面层厚度、结构层强度以及路基含水量对沥青路面结构承载力的影响；根据现场调查，分析造成路基含水量偏高的原因。调查分析结果表明:在沥青面层厚度、材料组成以及材料强度并未出现明显变异现象的条件下，路基含水量过高是导致沥青路面龟裂的主要原因，需要完善道路的排水措施。

Cause Analysis of Alligator Cracking on Asphalt Pavement of an Urban Road in Southeast Asia

In relation to alligator cracking on asphalt pavement of an urban road in Southeast Asia region, the overall bearing capacity of asphalt pavement was analyzed by deflection testing on Beckman beam. Combining with the detection by road core drilling and sugrade excavating, how the thickness of asphalt surface course, the strength of structural layer, and the water content in subgrade affect the structural bearing capacity of asphalt pavement were analyzed; and according to field survey, why the water content in subgrade is relatively high was studied. The results show that, on condition that there are not significant variation in thickness of asphalt surface course, material composition and strength, too high water content in subgrade is the main cause of alligator cracking on asphalt pavement, which requires perfect road drainage measures.