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文章通过对宣大高速公路的断板进行跟踪观测,利用探地雷达进行扫描,对路基的沉降进行监测,利用有限元对重载交通进行力学分析。结果表明:引起断板的主要原因是局部路基严重沉降不均、板底出现脱空、轴载过重。根据病害原因提出了相应的管理养护措施。
The article observes the broken plate of Xuanda Expressway, scans it with ground penetrating radar, monitors the subsidence of the subgrade, and uses the finite element method to analyze the heavy traffic. The results show that the main reason of plate breakage is the serious subsidence of partial subgrade, the emptying of plate bottom and overloading of axle. According to the reason of the disease, the corresponding management and maintenance measures are put forward.