Reduction of stress concentration by polymer flexible joints in seismic protection of masonry infill walls in RC frames
Abstract
In the paper, the phenomenon of stress concentration occurring in brittle structural materials of infill structures is discussed. Four innovative repair methods based on flexible joints made of polyurethane PM are presented. They provide a reduction of the stress concentration and improvethe structural ductility. The effectiveness of newly proposed timber-polyurethane dissipative struts is proved by laboratory shear tests, which results are discussed in detail. The calculated dissipation energy and stiffness of the proposed system ensures a simultaneous transfer of loads and large deformations occurring during an earthquake to the introduced dissipative struts and improves the system safety. The recommended repair methods can be used efficiently by emergency teams in seismic areas.
- Publication:
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Materials Science and Engineering Conference Series
- Pub Date:
- January 2019
- DOI:
- 10.1088/1757-899X/474/1/012003
- Bibcode:
- 2019MS&E..474a2003K