Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 61 for “"shear-capacity"”.
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Shear capacity of circular concrete sections
… for Concrete design will alter the way that shear design is approached for concrete structures. The Eurocodes have adopted the variable angle truss model for shear, a more theoretically consistent approach than that found in the British Standards. The model is confidently applied to …
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Characterization of Punching Shear Capacity of Thin Uhpc Plates
… and contained no reinforcing steel to resist shear. The lack of steel reinforcement allowed for the possibility of a punching shear failure to occur from the application of a point load such as a wheel tire patch load. The model and optimized section served as the foundation for this research, …
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Nontraditional Limitations on the Shear Capacity of Prestressed Concrete Girders
It was also determined that the requirement for longitudinal tension reinforcement near the support included in the 4th edition of the AASHTO LRFD Bridge Design Specifications may underestimate the demand on longitudinal tension reinforcement. Alternatively an equilibrium based approach is …
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Machine Learning Prediction of Shear Capacity of Steel Fiber Reinforced Concrete
… growing in recent years owing to the improved shear strength and post-cracking toughness imparted by fiber inclusion. Yet, there is still lack of design provisions for steel fiber-reinforced concrete (SFRC) in building codes. This is mainly due to the complex shear transfer mechanism in SFRC. …
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Centrifuge modelling of high shear capacity ribbed piles in stiff clay
… ahead of their competitors. The idea of the High Shear Capacity Ribbed Pile, whereby the construction of ribs along the length of the pile shaft might significantly increase the shaft capacity, has been considered by contractors in the past. Various tools with which to construct these ribs, using …
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Retrofitting of reinforced concrete beams with CFRP straps to enhance shear capacity
… Fibre Reinforced Polymer (CFRP) straps for shear enhancement of reinforced concrete beams. Previous studies using these straps have employed steel pads on top of the beam to support the strap but this is problematic from a practical point of view. The initial goal of this research was to …
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Retrofitting of reinforced concrete beams with CFRP straps to enhance shear capacity
… Fibre Reinforced Polymer (CFRP) straps for shear enhancement ofreinforced concrete beams. Previous studies using these straps have employed steel pads on top of the beam to support the strap but this is problematic from a practical point of view. The initial goal of this research was to …
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Punching shear capacity of flat slab-column junctions (a study by 3-D non-linear finite element analysis)
This thesis presents a study of punching shear capacity of flat slab-column junctions. A three dimensional non-linear finite element program based on 20 node isoparametric solid element was used for the investigation. The non-linear 3-D elastic isotropic model proposed by Motsovos was used to …
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Behaviour of demountable shear connectors in composite structures
… is to evaluate the feasibility of demountable shear connectors as an alternative to welded shear connectors in composite structures through push off tests and composite beam tests. Push off tests were conducted to examine the shear strength, stiffness and ductility of demountable shear …
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Shear strengthening of pre-cracked and non pre cracked reinforced concrete continuous beams using bi directional CFRP strips
Shear failure of a reinforced concrete beam is catastrophic where it occurs suddenly and without any warning. The use of FRP sheet as a strengthening and repairing material is an effective method to enhance the shear capacity of the beam. Extensive researches have been conducted on the shear …
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THE SHEAR BEHAVIOUR OF THE REINFORCED CONCRETE FOUR-PILE CAPS
… BS5400 and BS8110 in the prediction of the shear capacity of 2-way spanning reinforced concrete pile caps from bending theory-based empirical design formulae. This causes designers difficulty to predict an accurate shear capacity of the pile cap. The inherently empirical character of the …
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Shear Behaviour in Slender Reinforced Concrete Beams with and without Transverse Reinforcement
This study investigates shear crack behaviour in slender reinforced concrete (RC) beams, focusing on the critical shear crack (CSC) geometry and its impact on crack kinematics and shear transfer mechanisms. Existing models often oversimplify CSC shape assumptions, potentially leading to …
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Shear strengthening and repair of deep beams with and without web reinforcement using near-surface mounted CFRP bars
Shear failure of a reinforced concrete beam is catastrophic because it occurs suddenly and without warning. Recently, CFRP sheets and bars have been rapidly employed in strengthening structural concrete elements including deep beams. In this research, the behaviour of deep beam strengthened with …
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CFRP as Shear and End-Zone Reinforcement for Concrete Bridge Girders
… a single point load near the support to induce shear failure. Beams were fitted with instrumentation to capture shear cracking data. Shear capacity calculations following four methods were compared to test results. Lastly, a parametric study with strut-and-tie modeling was performed on Precast …
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Evaluation of Repairs Conducted on Full-Scale, Non-Conforming/Defective Prestressed Concrete Girders (PCI BT-54)
… reaching at least 95% of nominal moment capacity and 90% of nominal shear capacity. Recommendations include simplifying top flange repair procedures, reconsidering the use of epoxy bonding agents, and ensuring adequate exposure of steel reinforcement for proper bond of bottom flange …
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Monolithic beam to external column joints in reinforced concrete
… HSC [1]. However, there are concerns about the shear behaviour of HSC beams and BCJ used in the construction of these buildings. HSC beams have equal or less shear resistance compared to normal strength concrete (NSC) beams [2], and the brittleness of HSC material could be unsuitable for BCJ as …
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Column Footings Strengthened with External Prestressing and External Wrapping Systems
… especially on their improvements in the punching shear capacity. 353 models were built in ABAQUS. For each system, a unique group of parameters were considered and investigated. As an active system, CEP significantly improved the punching shear capacity of RC footings, and the number of …
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NUMERICAL INVESTIGATION OF EXPANSION ANCHORS RESPONSE TO PULL-OUT AND SHEAR LOADS
… The anchors response to pull-out and shear loads was evaluated using non-linear finite element analysis. It was found that the pre-tension load had no influence on the anchor ultimate capacity but affected the anchor response at service load levels and the displacement at failure. …
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On The Shear Strength Of Partially Grouted Concrete Masonry
Masonry shear walls are one of the most common structural elements in buildings. The in-plane shear capacity of load-bearing walls is of great importance in the seismic design of structures. This study focuses on the shear behaviour of wide-spaced reinforced partially grouted (WRPG) concrete …
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