两种测试钢管混凝土内部缺陷的判别方法

Two Methods of Testing Defect in Concrete-filled Steel Tubular

根据超声波检测技术的基本原理和钢管混凝土缺陷的特点,提出了钢管混凝土缺陷当量直径判别法和面积判别法及相应的判别公式,当量直径判别法和面积判别法可分别作为一般钢管混凝土内部缺陷的定性和定量检测,工程实测结果表明,当量直径判别法和面积判别法具有较高的可靠性,但仍然需要进行大量的实测验证和完善。

According to the defect features of concrete-filled steel tubular (CFST) and the basic principle of ultrasonic testing, equivalent diameter discriminant, area discriminant and derivation discriminant formula were raised. Both defect diameter discriminant and area discriminant were used to test defect inner CFST quantitatively. Meanwhile, the practice testing was made. The measuring result showed that defect equivalent diameter discriminant and area discriminant were more reliable, but still need to be proved and improved.