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文章针对当前水泥混凝土路面板底脱空的检测和评定缺乏有效定量评定方法的现状,结合实际常用的FWD和贝克曼梁两种弯沉测试手段,考虑了弯沉测试过程中测点偏移和温度等因素的影响,引入了弯沉指数(板角和板中弯沉比值)的概念,进行了水泥混凝土路面板中和板角弯沉的计算分析,归纳了弯沉指数与路面板平面尺寸、接缝传荷能力、地基板相对刚度半径以及板角脱空范围等因素的相关关系式,建立了一套完整的水泥混凝土路面板角脱空范围的定量判别方法。
Aiming at the lack of effective quantitative assessment methods for void detection and assessment of the current cement concrete pavement slab bottom floor, combined with the commonly used two kinds of deflection test methods FWD and Beckman beam, taking into account the test point deflection and Temperature and other factors, the concept of deflection index (angle of slab and deflection of slab) was introduced. The calculation and analysis of the deflection of slab and slab in cement concrete pavement were carried out. The deflection index and the plane dimension of pavement , The joint load-carrying capacity, the relative stiffness of the base plate and the void angle of the plate angle and other factors, the paper establishes a complete set of quantitative judgment methods for the void area of cement concrete pavement angle.