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为了进一步完善和修正湖南地区的弯沉检测季节影响系数,项目组对湖南地区已建和在建的63条干线公路采用传统的贝克曼梁法进行了沥青面层或路基顶面的弯沉检测,对大量的弯沉数据进行了汇总分析,并选取有代表性的项目在不同季节进行了跟踪检测。结果表明:对于砂类土路基,“取值规定”的季节修正系数在过渡季节取值较为合理,但在干燥季节取值偏小;对于粘质土路基,“取值规定”的季节修正系数在过渡和干燥季节均偏小;对于沥青面层的季节影响系数,过渡季节可不调整,干燥季节仍有一定的可调整空间。
In order to further improve and correct the seasonal influence coefficient of the deflection test in Hunan Province, the project team conducted the traditional Beckerman beam method to test the deflection of the asphalt surface or the subgrade topography of the 63 trunk roads in Hunan Province, which are under construction and under construction , A large number of deflection data were summarized and analyzed, and selected representative projects were tracked in different seasons. The results show that for the sandy soil subgrade, the seasonal correction coefficient of “value regulation ” is more reasonable in the transitional season but smaller in the dry season. For the clay soil subgrade, Of the season correction coefficient in the transition and dry season are small; for the asphalt surface seasonal influence coefficient, the transition season can be adjusted, there is still some dry season to adjust the space.