Method for detecting damage to a deck of a bridge

Provided is a method for detecting damage to a deck of a bridge, the method allowing detection work to be achieved with less labor and being capable of reducing the time and cost needed for the detection work. From a road-surface measuring vehicle running on pavement 3 on top of a steel-plate deck 1...

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Bibliographische Detailangaben
Hauptverfasser:	YAMAGAMI TETSUJI, TSUKAMOTO SHIGEAKI, KUROSU HIDEAKI, UCHIMA MITSUAKI, MAEDA CHIKAKUNI
Format:	Patent
Sprache:	eng
Schlagworte:	ASSEMBLY OF BRIDGES COLORIMETRY CONSTRUCTION OF BRIDGES CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY FIXED CONSTRUCTIONS INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING OR VIADUCTS PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION RADIATION PYROMETRY TESTING
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Beschreibung
Zusammenfassung:	Provided is a method for detecting damage to a deck of a bridge, the method allowing detection work to be achieved with less labor and being capable of reducing the time and cost needed for the detection work. From a road-surface measuring vehicle running on pavement 3 on top of a steel-plate deck 1, a thermal infrared video of the surface of the pavement 3 is acquired by a thermal infrared video camera. Based on the thermal infrared video, troughs 4 of the steel-plate deck 1 are detected to grasp the structure of the steel-plate deck 1. Residence of water inside prescribed trough members 41 and sealing diaphragms 42 is detected from low-temperature regions R2 from among regions corresponding to troughs 4 in the thermal infrared video, and from rectangular low-temperature sections L2 that surround the regions R2. Through cracks are detected in deck plates 2 that correspond to troughs 4 in which residence of water has been detected.