软土地区既有沥青路面改造的工程实践

Engineering Practice of Existing Asphalt Pavement Reconstruction in Soft Soil Areas

摘要:

针对软土地区既有沥青路面改造的工程实例，通过对现状道路的路面状况指数、路面结构性能、路面芯样以及桥头纵坡进行分析，结合道路情况分类采用不同路面处理方式：对道路基层损坏位置采用注浆加固处理，根据沥青路面病害轻重程度分类处理，调小桥头纵坡减缓跳车情况，结合路面高差情况采用不同路面加铺方案。分析成果可为对软土地区的既有沥青路面改造提供实践参考。

Abstract:

Based on the engineering case of existing asphalt pavement reconstruction in soft soil areas, the pavement condition index, the pavement structural performance, the pavement core samples and the bridgehead longitudinal slopes of the current roads are analyzed. Combined with the classification of road conditions, the different pavement treatment methods are adopted. The damaged parts of the road base are reinforced by grouting. The asphalt pavement distresses are classified to treat. The longitudinal slope of bridgehead is reduced to slow down the jumping situation. The different pavement overlaying schemes are adopted according to the pavement elevation difference. The analysis results can provide the practical reference for the reconstruction of the existing asphalt pavements in soft soil areas.