Quantitative approach for damage detection of reinforced concrete frames |
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| Authors: | Email author" target="_blank">Yoshio?KanekoEmail author Akira?Mita Hirozo?Mihashi |
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| Institution: | 1. Dept. of Architecture & Building Science, Tohoku University, Sendai 980-8579, Japan
2. Dept. of System Design Engineering, Keio University, Yokohama 223-8522, Japan |
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| Abstract: | The objective of this paper is to provide an analytical basis for the quantitative evaluation of damage to a reinforced concrete
structure based on the vibration data obtained by using the damage detection technique. A partial reinforced concrete system
of a weak beam/strong column moment frame is chosen as an example. A pushover analysis is carried out in order to numerically
examine both the story shear-relative displacement characteristics and the associated damage level. In the analysis, a two
dimensional nonlinear finite element analysis is employed considering several constitutive models. As a result, the degradation
of the stiffness at the damaged story is characterized in association with the story relative displacement. It is also pointed
out that the rotation angle of the column-base is highly correlated with the story relative displacement. Based on the analytical
findings, quantitative approaches for a structural health monitoring system are suggested considering both the current sensor
technologies and those available in the future.
Supported by: Ministry of Education, Science, Sports and Culture, Grant-in-Aid for Scientific Research (Base Research (c)
(1), Research No. 14550555) |
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| Keywords: | nonlinear FEM analysis structural health monitoring reinforced concrete structure story stiffness rotation angle of column-base |
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