Earthquake Damage Survey and Diagnosis Method for Building in Town Blocks Using Digital Photogrammetry

Abstract

Earthquake damage survey and diagnosis for building shall be done as soon as possible after the occurrence of earthquakes. However, current survey method takes long time. For example a survey team can judge damage about 15 houses a day on average. This study proposes a new survey and diagnosis method by measuring the coordination of several markers of damage building in the area of town block, and evaluating by the tilt angle of the building by the use of digital photogrammetry, which ensures the survey in accurate and prompt ways. The tilt angle of each building in the town blocks can provide effective information for disaster emergency response.