摘  要：基于传热学理论，利用红外热成像检测技术对钢板组合剪力墙界面脱空问题进行了研究。结果表明，采用主动式热激励和被动式热激励加热两种方式可以有效识别出钢板组合剪力墙界面脱空的缺陷位置和尺寸，当钢板壁厚为1 mm时，可识别1 cm²以上的缺陷；钢板壁厚为3 mm和5 mm时，可识别4 cm²以上的缺陷。合理控制热激励功率和时间可以有效减小缺陷尺寸识别的误差率。结合工程实际，红外热成像法可以识别出钢板组合剪力墙界面脱空缺陷及未浇筑区域，便于在浇筑混凝土时进行实时跟踪检测。

Abstract: Based on the theory of heat transfer, the interface void problem of steel plate composite shear wall was studied by using infrared thermal imaging technology. The results show that the position and size of interface void defect in steel plate composite shear wall can be effectively identified by using active thermal excitation and passive thermal excitation heating. When the thickness of steel plate is 1 mm, defects above 1 cm² can be identified, when the thickness of steel plate is 3 mm and 5 mm, defects above 4 cm² can be identified. The error rate of defect size identification can be effectively reduced by controlling the power and time of thermal excitation. Combined with the engineering practice, the interface void defect and non-pouring area of steel plate composite shear wall can be identified by infrared thermography method, which is convenient for real-time tracking detection in pouring concrete.