%0 Conference Paper %1 Lau2013 %A Lau, David T. %A Cruz-Noguez, Carlos A. %B 5th International Conference on Advances in Experimental Structural Engineering %C Taipei, Taiwan %D 2013 %K imported %T Developments on Seismic Retrofit of RC Shear Walls with FRP %X This paper summarizes the results obtained from a comprehensive study on the use of externally-bonded fibre- reinforced polymer (FRP) tow sheets for the seismic retrofit of reinforced concrete (RC) shear walls. The study includes both laboratory testing and analytical investigation using computer simulation models. The experimental investigation consists of cyclic lateral load tests of reinforced concrete shear walls of different aspect ratios ranging from slender flexural walls to intermediate and squat walls dominated by brittle shear behaviour in both repair and strengthening applications. The effectiveness of the FRP retrofit scheme in recovering or enhancing the earthquake resistant capability of deficient reinforced concrete structures as well as structures that meet current design standard requirements are investigated. The common reinforcement and detailing deficiencies considered include insufficient shear and confinement reinforcement, and lap-splice at inelastic plastic regions of walls that are typically found in old existing reinforced concrete structures designed decades ago using now obsolete design standards. A new tube anchor system and its improvement to the performance of the FRP retrofit system with the earthquake resistance of reinforced concrete shear walls are discussed. Parallel to the experimental investigation, analytical research has also been carried out to develop computer models for predicting the behaviour and performance of reinforced concrete shear walls strengthened or repaired with the FRP system. These include simplified models suitable for design purposes as well as detailed computer models and simulation methodology with the aims to investigate the detailed interaction and debonding failure mechanisms of the FRP sheets and the hysteretic behaviour and the ductility and energy dissipation capacity of the combined systems. The correlation results with the experimental observations show that the developed computer simulation techniques can accurately predict the ultimate strength and ductility, as well as the hysteretic and energy dissipation characteristics of reinforced concrete shear walls with FRP. Design procedures and guidelines for the new tube anchor system are also presented.

@inproceedings{Lau2013, abstract = {This paper summarizes the results obtained from a comprehensive study on the use of externally-bonded fibre- reinforced polymer (FRP) tow sheets for the seismic retrofit of reinforced concrete (RC) shear walls. The study includes both laboratory testing and analytical investigation using computer simulation models. The experimental investigation consists of cyclic lateral load tests of reinforced concrete shear walls of different aspect ratios ranging from slender flexural walls to intermediate and squat walls dominated by brittle shear behaviour in both repair and strengthening applications. The effectiveness of the FRP retrofit scheme in recovering or enhancing the earthquake resistant capability of deficient reinforced concrete structures as well as structures that meet current design standard requirements are investigated. The common reinforcement and detailing deficiencies considered include insufficient shear and confinement reinforcement, and lap-splice at inelastic plastic regions of walls that are typically found in old existing reinforced concrete structures designed decades ago using now obsolete design standards. A new tube anchor system and its improvement to the performance of the FRP retrofit system with the earthquake resistance of reinforced concrete shear walls are discussed. Parallel to the experimental investigation, analytical research has also been carried out to develop computer models for predicting the behaviour and performance of reinforced concrete shear walls strengthened or repaired with the FRP system. These include simplified models suitable for design purposes as well as detailed computer models and simulation methodology with the aims to investigate the detailed interaction and debonding failure mechanisms of the FRP sheets and the hysteretic behaviour and the ductility and energy dissipation capacity of the combined systems. The correlation results with the experimental observations show that the developed computer simulation techniques can accurately predict the ultimate strength and ductility, as well as the hysteretic and energy dissipation characteristics of reinforced concrete shear walls with FRP. Design procedures and guidelines for the new tube anchor system are also presented.}, added-at = {2015-04-15T13:01:01.000+0200}, address = {Taipei, Taiwan}, author = {Lau, David T. and Cruz-Noguez, Carlos A.}, biburl = {https://www.bibsonomy.org/bibtex/27c77c3f2c2dc59880f60f6af44d690bc/v.vitanov}, booktitle = {5th International Conference on Advances in Experimental Structural Engineering}, file = {Lau2013.pdf:Lau2013.pdf:PDF}, interhash = {fb13f9bf131a48cd41a2848529a840ae}, intrahash = {7c77c3f2c2dc59880f60f6af44d690bc}, keywords = {imported}, month = {November 8-9}, owner = {vladimir}, timestamp = {2015-04-16T09:20:21.000+0200}, title = {Developments on Seismic Retrofit of RC Shear Walls with FRP}, year = 2013 }