新建机场水泥混凝土道面厚度对弯沉的影响分析

为研究新建机场水泥混凝土道面厚度对弯沉的影响,文中对新建成都天府国际机场道面进行了重型落锤式弯沉仪(HWD)测试,并分析了道面板不同板厚和不同位置处的典型弯沉盆,对比了不同厚度道面板的板边弯沉和板中弯沉,以及板角弯沉和板中弯沉的比值。结果表明,对新建水泥混凝土道面来说,厚道面周围弯沉衰减速度较慢,道面厚度对板边弯沉/板中弯沉和板角弯沉/板中弯沉基本无影响。

Research on the Influence of the Thickness of Newly-built Airport Cement Concrete Pavement on the Deflection

In order to study the influence of the thickness of newly-built airport cement concrete pavement on the deflection,the deflection of newly-built Chengdu Tianfu International Airport runway pavement was tested through the heavy weight deflectometer(HWD).The typical pavement deflection with different pavement thicknesses and that at different pavement positions were analyzed,and the ratios of pavement slab deflection at the edge to that in the middle,and the ratios of pavement slab deflectionat the corner to that in the middle with different pavement slab thicknesses were compared.The results show that,for the newly-built cement concrete pavement,the decay speed of deflection with the thicker pavement is relatively slow,and the thickness of the pavement has basically no effect on the edge deflection,the slab deflection and the ratio of corner deflection of pavement slab.