Comprehensive evaluation of the subgrade and pavement condition based on nondestructive testing
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摘要: 为准确评估市政工程中旧道路路基路面状况,采用道路多功能综合检测车、全自动车载落锤式弯沉仪、探地雷达等新兴无损检测手段,通过分析旧道路路面损坏状况、地下病害体和路面结构承载能力的内在联系,对轨道交通旧道路路基路面状况进行综合评估。根据综合评估结果确定了路段病害处治的策略,改变了只能通过路面指标制定设计方案的现状,为轨道交通道路施工恢复设计提供了科学依据。Abstract: In order to accurately evaluate the subgrade and pavement condition of the old road in municipal engineering, the emerging nondestructive testing methods such as pavement measuring car, in-vehicle falling weight deflectometer and ground penetrating radar are used to comprehensively evaluate the subgrade and pavement condition of the old road in the rail transit system. With the help of analyzing the internal connection between the condition of pavement distress, underground disasters, and bearing capacity of pavement structure, the strategy for the treatment of road disease is proposed according to the comprehensive evaluating results, which may change the current situation that the design scheme can only be made through pavement indicators and may provide the scientific basis for the recovery design about rail transit road construction.
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