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Composite mechanics-based design approach for FRP-strengthened walls

Composite mechanics-based design approach for FRP-strengthened walls This study deals with development of a composite mechanics-based design approach for flexural strengthening of masonry walls using different layers of fiber-reinforced polymer (FRP) strips externally bonded and/or near surface mounted (NSM) FRP bars. To verify the developed design approach, experimental study was also conducted on three groups of walls. Six burnt clay brick masonry walls of size 780 × 480 × 230 mm were fabricated. Out of six, four masonry walls are strengthened with combination of longitudinal carbon fiber-reinforced polymer strips and horizontal NSM bars. The flexural responses of these masonry walls were predicted using three-point static loading. To evaluate the effect of using horizontal NSM FRP bars in conjunction with the longitudinal FRP strips on the response of the strengthened wall, an analytical approach using classical lamination theory has been presented. The developed analytical approach shows good agreements with the experimental results in terms of load carrying capacity and mid-span deflection. This analytical approach will help in setting up the design procedure to evaluate the response of a wall that is strengthened with FRP bars/strips provided in multiple layers. A design example has also been provided for easy understanding of the design approach. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Structural Integrity and Maintenance Taylor & Francis

Composite mechanics-based design approach for FRP-strengthened walls

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Composite mechanics-based design approach for FRP-strengthened walls

Abstract

This study deals with development of a composite mechanics-based design approach for flexural strengthening of masonry walls using different layers of fiber-reinforced polymer (FRP) strips externally bonded and/or near surface mounted (NSM) FRP bars. To verify the developed design approach, experimental study was also conducted on three groups of walls. Six burnt clay brick masonry walls of size 780 × 480 × 230 mm were fabricated. Out of six, four masonry...
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Publisher
Taylor & Francis
Copyright
© 2018 Korea Institute for Structural Maintenance and Inspection
ISSN
2470-5322
eISSN
2470-5314
DOI
10.1080/24705314.2018.1492670
Publisher site
See Article on Publisher Site

Abstract

This study deals with development of a composite mechanics-based design approach for flexural strengthening of masonry walls using different layers of fiber-reinforced polymer (FRP) strips externally bonded and/or near surface mounted (NSM) FRP bars. To verify the developed design approach, experimental study was also conducted on three groups of walls. Six burnt clay brick masonry walls of size 780 × 480 × 230 mm were fabricated. Out of six, four masonry walls are strengthened with combination of longitudinal carbon fiber-reinforced polymer strips and horizontal NSM bars. The flexural responses of these masonry walls were predicted using three-point static loading. To evaluate the effect of using horizontal NSM FRP bars in conjunction with the longitudinal FRP strips on the response of the strengthened wall, an analytical approach using classical lamination theory has been presented. The developed analytical approach shows good agreements with the experimental results in terms of load carrying capacity and mid-span deflection. This analytical approach will help in setting up the design procedure to evaluate the response of a wall that is strengthened with FRP bars/strips provided in multiple layers. A design example has also been provided for easy understanding of the design approach.

Journal

Journal of Structural Integrity and Maintenance – Taylor & Francis

Published: Jul 3, 2018

Keywords: Classical lamination theory (CLT); fiber-reinforced polymer (FRP); flexural strength; near surface mounted (NSM); masonry walls

References

  • Deflection calculation of FRP reinforced concrete beams based on modifications to the existing Branson equation
  • Out-of-plane strengthening of unreinforced masonry walls using near surface mounted fibre reinforced polymer strips
  • Out-of-plane flexural performance of GFRP-reinforced masonry walls
  • Design guidelines for masonry structures: Out of plane loads
  • Provisional design guidelines for the strengthening of masonry structures subject to in-plane loading
  • Flexural displacement response of NSM FRP retrofitted masonry walls
  • Flexural capacity of glass FRP strengthened concrete masonry walls
  • Behaviour of masonry structures during the Bhuj earthquake of January 2001
  • Evaluation of flexural strength prediction of reinforced concrete beams with steel fibres
  • FRP strengthened masonry beams. Part I-model
  • Seismic retrofit and repair of masonry walls with carbon verlays
  • The use of FRP’s in masonry: A state of the art review
  • Experimental investigation on flexural performance of masonry walls reinforced with GFRP
  • Nonlinear FE analysis of out-of-plane behaviour of masonry walls with and without CFRP reinforcement
  • Blast resistance of FRP retrofitted unreinforced masonry (URM) walls with and without arching action
  • Textile reinforced mortar (TRM) versus FRP as strengthening material of URM walls: Out-of-plane cyclic loading
  • Strengthening of masonry beam with ECC as bed joint
  • Role of water/cement ratio on strength development of cement mortar
  • Strengthening of masonry structures using epoxy-bonded FRP laminates
  • FRP strengthening of UMR walls subject to out-of-plane loads
  • Flexural and shear strengthening of un-reinforced masonry with FRP bars