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为推进钢桥无损检测技术的进步,解决城市高架钢桥焊缝射线检测效率低、成本高、干扰大等问题,通过TOFD技术与RT技术的优势比较,经过TOFD技术应用状况调研、工程比对试验、专家会议论证和工程实际应用等程序,证明TOFD具有速度快、精度高、成本低、环保无辐射、数据永久保存方便等一系列优点。将TOFD焊缝无损检测技术标准引入铁路、公路钢箱梁桥的设计施工规范,推广TOFD检测技术,将其作为检测手段之一,对钢桥焊缝的质量保证、检测效率、环境保护、职业健康均会起到积极作用。
In order to promote the progress of steel bridge non-destructive testing technology and solve the problems of low detection efficiency, high cost and high interference of the welded steel viaduct in urban viaduct steel bridge, by comparing the advantages of TOFD technology and RT technology, Test, demonstration of expert meeting and application of engineering. It proves that TOFD has a series of advantages such as fast speed, high precision, low cost, environmental protection and no radiation and permanent data saving. The TOFD weld non-destructive testing standards into the railway, highway steel box girder bridge design and construction specifications, the promotion of TOFD testing technology, as one of the means of detection, the steel bridge weld quality assurance, testing efficiency, environmental protection, occupation Health will play a positive role.