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Average Crack Spacing of Overlay-Strengthened RC Beams

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Title: Average Crack Spacing of Overlay-Strengthened RC Beams
Authors: Zhang, Dawei Browse this author
Ueda, Tamon Browse this author
Furuuchi, Hitoshi Browse this author →KAKEN DB
Keywords: Crack spacing
Multilayered reinforcement
Issue Date: Oct-2011
Publisher: American Society of Civil Engineers
Journal Title: Journal of Materials in Civil Engineering
Volume: 23
Issue: 10
Start Page: 1460
End Page: 1472
Publisher DOI: 10.1061/(ASCE)MT.1943-5533.0000316
Abstract: The research is focused on evaluating the average crack spacing of overlay-strengthened reinforced concrete (RC) beams. The current equations in different structural codes for predicting the average crack spacing of RC beam with multilayered-reinforcing bars is proved to be inapplicable for overlay-strengthened RC beam, although these two kinds of beams are both with reinforcement in multi-layers. Therefore, a simple, practical and new analytical model that is capable of predicting the average crack spacing of overlay-strengthened beams is developed. An overlay-strengthened beam element is analyzed based on equilibrium and compatibility equations to formulate the average stresses of concrete, overlay and tension reinforcement. A series of verification comparisons with the experimental investigations, which involved various types of beam elements, are performed to verify the validity and reliability of the model. The proposed model performs satisfactorily with respect to measured response from the experimental database.
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 古内 仁

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