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粘贴纤维复合材料加固桥梁结构时,空鼓是影响加固质量的重要原因。目前对空鼓的检测多采用小锤敲击法,该方法存在受人为主观因素影响较大、费时费力、对未完全空鼓区和空鼓面积无法准确判断等缺点。空鼓检测成为了制约完善粘贴纤维复合材料加固法检测体系的的重要因素。利用红外热像仪对纤维复合材料的粘贴质量进行了检验,通过在不同条件下的检验结果,分析了物体表面红外辐射率、风、热源类型、加热时间以及使用环境对检测效果的影响,并介绍了分层和空鼓的判定。研究表明,在合适的条件下,利用红外热像仪可以对纤维复合材料的粘贴质量进行方便、快捷、准确地检验,该方法对完善加固结构质量检验体系具有重要意义。
Adhere to the fiber composite material to reinforce the bridge structure, hollowing is an important factor affecting the quality of reinforcement. At present, the detection of hollowing is mostly using the hammering method. This method has the shortcomings of being influenced by subjective factors, time-consuming and labor-intensive, and incompletely estimating the hollowing-out area and hollowing-out area. The hollowing test has become an important factor that restricts the perfect testing system of the bonded fiber composite reinforced method. The infrared thermography was used to test the quality of the fiber composite. The test results under different conditions were used to analyze the effect of infrared emissivity, wind, heat source, heating time and environment on the test results. Described stratification and hollowing judgment. The research shows that under proper conditions, the infrared thermography can be used to inspect the quality of the fiber composite material conveniently, quickly and accurately. This method is of great significance to perfect the quality inspection system of the reinforced structure.