Advanced search options

Advanced Search Options 🞨

Browse by author name (“Author name starts with…”).

Find ETDs with:

in
/  
in
/  
in
/  
in

Written in Published in Earliest date Latest date

Sorted by

Results per page:

You searched for subject:( Voiles courts). One record found.

Search Limiters

Last 2 Years | English Only

No search limiters apply to these results.

▼ Search Limiters


Université de Sherbrooke

1. Arafa, Ahmed. Assessment of strength, stiffness, and deformation capacity of concrete squat walls reinforced with GFRP bars .

Degree: 2017, Université de Sherbrooke

Abstract : The present study addressed the feasibility of reinforced-concrete squat walls totally reinforced with GFRP bars to attain reasonable strength and drift requirements as specified in different codes. Nine large-scale squat walls with aspect ratio (height to length ratio) of 1.33—one reinforced with steel bars (as reference specimen) and eight totally reinforced with GFRP bars—were constructed and tested to failure under quasi-static reversed cyclic lateral loading. The key studied parameters were: (1) use of bidiagonal web reinforcement; (2) use of bidiagonal sliding reinforcement; and (3) web reinforcement configuration (horizontal and/or vertical) and ratio. The reported test results clearly revealed that GFRP-reinforced concrete (RC) squat walls have a satisfactory strength and stable cyclic behavior as well as self-centering ability that assisted in avoiding sliding shear that occurred in the companion steel-reinforced wall following steel yielding. The results are promising regarding using GFRP-reinforced squat walls in areas prone to seismic risk where environmental conditions are adverse to steel reinforcement. Bidiagonal web reinforcement was shown to be more effective than conventional web reinforcement in controlling shear-cracks width. Using bidiagonal sliding reinforcement was demonstrated to be not necessary to prevent sliding shear. The horizontal web reinforcement ratio was found to have a significant effect in enhancing the ultimate strength and deformation capacity as long as the failure is dominant by diagonal tension. Existence of both horizontal and vertical web reinforcement was shown to be essential for cracks recovery. Assessment of the ultimate strengths using the available FRP-reinforced elements code and guidelines (CSA S806-12 and ACI 440.1R-15) was conducted and some recommendations were proposed to attain a reasonable estimation of ultimate strengths. Given their importance in estimating the walls’ later displacement, the effective flexural and shear stiffness of the investigated walls were evaluated. It was found that the cracked shear stiffness could be estimated based on the truss model; while the flexural stiffness can be estimated based on the available expressions in FRP-reinforced elements codes and guidelines. Based on a regression analysis, a simple model that directly correlates the flexural and shear stiffness degradation of the test walls to their top lateral drift was also proposed. Advisors/Committee Members: Benmokrane, Brahim (advisor).

Subjects/Keywords: Squat walls; GFRP bars; Seismic; Sliding shear; Residual displacement; Flexural and shear deformations; Stiffness; Concrete; Hysteretic response; Web reinforcement; Voiles courts; Béton; Barres d’armature en polymère renforcé de fibre de verre (PRFV); Sismique; Réponse hystérétique; Rupture par glissement; Déplacement résiduel; Armature de l’âme; Déformation due à la flexion et à l’effort tranchant; Rigidité

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Arafa, A. (2017). Assessment of strength, stiffness, and deformation capacity of concrete squat walls reinforced with GFRP bars . (Doctoral Dissertation). Université de Sherbrooke. Retrieved from http://hdl.handle.net/11143/11057

Chicago Manual of Style (16th Edition):

Arafa, Ahmed. “Assessment of strength, stiffness, and deformation capacity of concrete squat walls reinforced with GFRP bars .” 2017. Doctoral Dissertation, Université de Sherbrooke. Accessed January 18, 2020. http://hdl.handle.net/11143/11057.

MLA Handbook (7th Edition):

Arafa, Ahmed. “Assessment of strength, stiffness, and deformation capacity of concrete squat walls reinforced with GFRP bars .” 2017. Web. 18 Jan 2020.

Vancouver:

Arafa A. Assessment of strength, stiffness, and deformation capacity of concrete squat walls reinforced with GFRP bars . [Internet] [Doctoral dissertation]. Université de Sherbrooke; 2017. [cited 2020 Jan 18]. Available from: http://hdl.handle.net/11143/11057.

Council of Science Editors:

Arafa A. Assessment of strength, stiffness, and deformation capacity of concrete squat walls reinforced with GFRP bars . [Doctoral Dissertation]. Université de Sherbrooke; 2017. Available from: http://hdl.handle.net/11143/11057

.