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- W3086003196 abstract "Abstract This paper discusses a possibility of detecting structural damage caused by an earthquake, by measuring the time history of the strain of beams and columns before and/or after the earthquake. An index called “local stiffness” is defined as the ratio of section force amplitude to representative displacement amplitude, and this ratio can be physically interpreted as stiffness. By calculating section force amplitude at a section or node from the measured strain amplitude under a microtremor or small aftershocks and comparing it with the results of a static pushover analysis, it becomes possible to detect any structural damage, such as fractures. This methodology was applied and the microstrain data of a steel moment frame were measured in a large-scale shaking table test; beam-end fractures were observed after some excitation tests. After the beam-end fracture formed, the measured local stiffness dropped significantly below the analysis value, indicating the possibility of employing this value to detect fractures using the analysis value as a threshold value." @default.
- W3086003196 created "2020-09-21" @default.
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- W3086003196 date "2020-09-16" @default.
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- W3086003196 title "Detection of Fracture in Steel Members of Building Structures by Microstrain Measurement" @default.
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- W3086003196 doi "https://doi.org/10.1007/s13296-020-00408-3" @default.
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