| Item type |
学術雑誌論文 / Journal Article.(1) |
| 公開日 |
2020-01-28 |
| 書誌情報 |
ja : 日本建築学会構造系論文集
en : Journal of Structural and Construction Engineering (Transactions of AIJ)
巻 83,
号 750,
p. 1151-1159,
発行日 2018
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| タイトル |
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|
タイトル |
既存コンクリート部材におけるコンクリート目荒らし面のせん断応力伝達と微小面の接触応力に基づく力学モデル |
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言語 |
ja |
| タイトル |
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|
タイトル |
SHEAR STRESS TRANSFER OF ROUGHENED CONCRETE FOR EXISTING R/C MEMBERS AND MECHANICAL MODEL BASED ON CONTACT STRESS ON LOCAL SURFACE |
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言語 |
en |
| 言語 |
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言語 |
jpn |
| キーワード |
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言語 |
ja |
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主題Scheme |
Other |
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主題 |
せん断応力伝達 |
| キーワード |
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言語 |
ja |
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主題Scheme |
Other |
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主題 |
コンクリート目荒らし |
| キーワード |
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言語 |
ja |
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主題Scheme |
Other |
|
主題 |
耐震補強 |
| キーワード |
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言語 |
ja |
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主題Scheme |
Other |
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主題 |
形状測定 |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
|
主題 |
Shear stress transfer |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
|
主題 |
Concrete roughening |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Seismic retrofitting |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Shape measurement |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 著者 |
磯崎, 翼
髙瀬, 裕也
阿部, 隆英
坂本, 啓太
樋渡, 健
香取, 慶一
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| 室蘭工業大学研究者データベースへのリンク |
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表示名 |
髙瀬 裕也（TAKASE Yuya） |
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URL |
http://rdsoran.muroran-it.ac.jp/html/100000088_ja.html |
| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
In the joints of seismic retrofitting structures, post-installed anchors are generally used. The concrete surfaces at the joints are roughened through a chipping process using a vibration drill in order to achieve the shear force stipulated in the Japanese guidelines for the seismic retrofitting of structures. However, there are no unified rules for concrete roughening in terms of shear force or the shape of the roughened surface. On the other hand, some previous studies focused on shear stress transfer mechanisms of cracked concrete surfaces. According to these research, we can estimate the shear stresses and normal stresses interacting on the entire cracked surfaces by integrating the contact stress over the area of the entire interface. Therefore, we conducted shear loading tests, and measurements of the roughened surface were taken. We then constructed a mechanical model based on the constitutive law that describes the shear stress transfer mechanisms of cracked concrete surface. Eight test specimens were prepared. We roughened the concrete surfaces of the eight specimens. For the test specimens, the existing member was modelled by a rectangular block with dimensions 580 mm × 400 mm × 200 mm. After roughening an area of 375 mm × 200 mm centered on the concrete surface, grouting mortar of dimensions 375 mm × 200 mm × 200 mm was cast on the surface. The test parameters considered here were the roughed concrete depth as well as the ratios between the roughened area and the surface area (0.10, 0.20, 0.30, 0.50, and 0.75). We took measurements of the roughened surface using laser displacement sensors. The measurement intervals were set to 0.04 mm in the x-direction and 0.5 mm in the y-direction. For the shear loading tests, we controlled the shear displacement and applied repeated cyclic loading. The constant normal stress was set to a constant value of 0.48 N/mm2. We constructed a mechanical model of the roughened concrete surface using the Bujadaham model (Bujadaham 1991). This model takes into account the stress transfer mechanisms of the cracked surface. The angle density function Ω(θ) in the Bujadaham model was set as Ω(θ) = 0.5cosθ However, it was not known whether or not we could use this defined angle density function for the roughened concrete surface. Therefore, we evaluated Ω(θ) using the three-dimensional data obtained from the shape measurements of the roughened surface. Additionally, we proposed Ω(θ) using the shape measurement results. The test and calculation results were in agreement. However, the contact stress in the Bujadaham model adopted an elasto-plastic model, we newly constructed the model between contact stress and contact displacement for the roughened concrete surface. In the proposed contact stress model, the stress softening behavior in the roughened concrete was considered. We constructed a mechanical model representing the roughened concrete surface and compared the experimental and analytical values. By using a constitutive equation that expresses the shear transfer mechanism of a cracked surface, and that takes into account the contact stress and friction on the local surface, the shear and vertical stresses of specimens with a roughened concrete area ratio of up to 0.3 can be evaluated. However, for specimens with a roughened concrete area ratio of 0.5 or 0.75, the shear and vertical stresses are underestimated. Thus, we were not able to express the specimens of shear failure modes using the proposed model. This problem will be a focus of future research. |
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言語 |
en |
| 出版者 |
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出版者 |
日本建築学会 |
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言語 |
ja |
| 出版者版へのリンク |
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表示名 |
10.3130/aijs.83.1151 |
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URL |
https://doi.org/10.3130/aijs.83.1151 |
| DOI |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
DOI |
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関連識別子 |
10.3130/aijs.83.1151 |
| 論文ID（NAID） |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
NAID |
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関連識別子 |
130007475227 |
| 日本十進分類法 |
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主題Scheme |
NDC |
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主題 |
511 |
| ISSN |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
1340-4202 |
| 書誌レコードID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AN10438559 |
| 権利 |
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言語 |
ja |
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権利情報 |
© 2018 日本建築学会 |
| 著者版フラグ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 主となる版 |
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関連タイプ |
isVersionOf |
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識別子タイプ |
URI |
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関連識別子 |
https://www.jstage.jst.go.jp/article/aijs/83/750/83_1151/_pdf/-char/ja |
| フォーマット |
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内容記述タイプ |
Other |
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内容記述 |
application/pdf |
TAIJ_83_750_1151_1159 (2.4 MB)
