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现行超声回弹综合法检测规程(CECS02:2005)提供的三参数幂函数回归方程不能很好地反映波速、回弹值与混凝土抗压强度之间的关系,直接影响了综合法的检测精度,为此,提出了一种新的混凝土曲面五参数幂函数公式,它能够很好地描述混凝土的声速值、回弹值和抗压强度值之间的关系,克服了传统的曲面公式拟合试验数据误差较大的缺点。可以更准确地评价建筑结构的混凝土强度。
The regression equation of three-parameter power function provided by the current ultrasonic rebound comprehensive method (CECS02: 2005) can not well reflect the relationship between wave velocity, rebound value and concrete compressive strength, which has a direct impact on the accuracy of the comprehensive method, Therefore, a new five-parameter power function formula of concrete curved surface is proposed, which can well describe the relationship between the sound velocity, the rebound value and compressive strength of concrete, and overcome the traditional fitting test of surface formula Data error greater shortcomings. The concrete strength of the building structure can be evaluated more accurately.