NON-DESTRUCTIVE EVALUATION METHOD FOR COMBINED BENDING STRESS USING MULTI-CHANNEL IMPACT ELASTIC WAVE TECHNIQUE IN PC BRIDGE
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- UCHIDA Shinya
- 富山県立大学 工学部環境・社会基盤工学科
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- YAMAMOTO Shaira
- 富山県立大学 工学研究科環境・社会基盤工学専攻
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- DOI Masato
- 富山県立大学 工学研究科環境・社会基盤工学専攻
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- MOMOKI Shouhei
- 飛島建設株式会社 技術研究所
Bibliographic Information
- Other Title
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- マルチチャンネル衝撃弾性波法に基づくPC橋梁に作用する合成曲げ応力の非破壊評価手法
Abstract
<p> In the construction of a PC box girder bridge using the cantilever method, measurements were carried out using the multi-channel impact elastic wave technique at four distinct phases of combined bending stress (pre-closure). Subsequently, the propagation characteristics of Rayleigh-waves were calculated, including phase velocity and amplitude attenuation. The results revealed a strong correlation between combined bending stress and Rayleigh-wave propagation characteristics, specifically, phase velocity and amplitude attenuation. This discovery led to the proposal of a non-destructive method for assessing combined bending stress. After the installation (post-closure), another round of measurements was conducted to validate the method. The results showed that the estimated combined bending stress using this approach roughly matched well with the design values. Consequently, it has become evident that utilizing the propagation characteristics (phase velocity and amplitude attenuation) of Rayleigh-waves obtained through the multi-channel impact elastic wave technique allows for the accurate non-destructive estimation of combined bending stress affecting the PC box girder bridge.</p>
Journal
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- Infrastructure Maintenance Practices
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Infrastructure Maintenance Practices 3 (1), 126-135, 2024
Japan Society of Civil Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390862268802248064
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- ISSN
- 2436777X
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- Text Lang
- ja
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- Data Source
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- JaLC
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- Abstract License Flag
- Allowed