Identification and precisional verification of the detecting the internal horizontal crack of RC slab based on dynamical properties of a plate / 平板の動的応答に着目した RC 床版の内部水平ひび割れ同定と精度検証
- Resource Type
- Journal Article
- Authors
- Shoji Nakayama; Tomoyo Taniguchi; Yusuke Ono; 中山 昭二; 小野 祐輔; 谷口 朋代
- Source
- 構造工学論文集 A / Journal of Structural Engineering, A. 2019, 65A:688
- Subject
- RC slab
RC 床版
internal horizontal crack
non destructive test
sweeping vibration
内部水平ひび割れ
掃引加振
非破壊試験
- Language
- Japanese
- ISSN
- 1881-820X
To detect internal horizontal cracks in RC slabs of bridge structures, this paper proposes stimulating and measuring vibration of a plate consisting of concrete on the upper part of the internal horizontal crack of the RC slab. Giving enforced sweeping vibration from the RC surface and/or the asphalt pavement surface, both natural frequencies and mode shapes about the crack part are measured and compared with the corresponding theoretical ones. Their identification and precisional verification implies applicability of the proposed method to detect the internal horizontal crack in RC slabs as one of the feasible non-destructive inspections in fields.