为研究高速公路某水库大桥C50混凝土抗压强度和回弹值之间的相互关系,应用计算机进行了多种数学模型的拟合回归,对多种回归方程的平均相对误差和相对标准差进行检验及比较,建立了某高速公路水库大桥专用测强曲线,得出了快速简便地建立专用测强曲线方法。 In order to study the relationship between the compressive strength and the rebound value of C50 concrete in a reservoir bridge of expressway, the fitting regression of various mathematical models was carried out by computer, and the average relative error and relative standard deviation of various regression equations were tested In addition, a special strength curve of a highway bridge was established and a method of establishing a special strength curve was established quickly and conveniently.