机场水泥混凝土道面脱空区动水压力分析

Analysis on Hydrodynamic Pressure of Cement Concrete Pavement Cavity Zone in Airport

唧泥脱空是最常见的脱空类型,而水是形成唧泥的首要条件。该文对机场道面形成唧泥冲刷作用的关键参数"动水压力"进行理论分析,为唧泥脱空的相关问题作进一步研究提供基础。该项研究以Elmer C.Hansen公路实测脱空区动水压力数据为基础,并全面考虑机场道面与公路路面的区别。通过对荷载大小、荷载通行速度及飞机升力影响等三方面的修正,最终得到机场脱空区内最大动水压力差可达90 kN。

The slurry cavity is the most common cavity type,and the water is the first condition to form the slurry.The article theoretically analyzes the key parameter of 'hydrodynamic pressure' to form slurry erosion of airport pavement,and provides the basis for the further study of slurry cavity.Based on the hydrodynamic pressure data of cavity zone measured in Elmer C.Hansen Highway,the article completely considers the difference of airport pavement from highway pavement.According to three aspects of load data,load traffic speed and aircraft lift effect,the maximum hydrodynamic pressure difference is finally 90 kN in airport cavity zone.