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Showing 1 to 20 of 23 for “"Shear Span"”.
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Seismic Assessment of Singly Reinforced Concrete Walls in Pre-1970s Multi-Storey Buildings
… global and local behaviour of both flexural- and shear- dominated reinforced concrete walls with non-ductile detailing. The modelling results indicated that the wall response and drift capacity of reinforced concrete walls representing typical older construction practice in New Zealand before …
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Zur Zuverlässigkeit der Bemessung gegen Durchstanzen bei Einzelfundamenten
… Around the columns large moments and vertical shear forces arise in the footings. These forces can cause a local shear failure, which is called punching shear failure. In general, design codes do not distinguish between the punching shear strength of flat slabs and footings. Although …
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Shear Strengthening of Reinforced Concrete Beams Using Externally Bonded Carbon Fibre Reinforced Plates
… of reinforced concrete beams strengthened in shear by the addition of Carbon Fibre Reinforced Plastics (CFRP). An experimental programme was devised to investigate the shear behaviour of reinforced concrete beams strengthened by the attachment of different configurations and quantities of CFRP …
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Seismic behavior of circular reinforced concrete bridge columns under combined loading including torsion
… of skewed and curved bridges with unequal spans and column heights can be subjected to combined loading including axial, flexure, shear, and torsion loads during earthquakes. The combination of axial loads, shear force, and flexural and torsional moments can result in complex failure modes …
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Optimum shear strengthening of reinforced concrete beams
… polymer (CFRP) straps can be used to strengthen shear deficient reinforced concrete (RC) structures. The strengthening system is associated with a number of parameters including the number of straps, strap locations, strap stiffness, and strap prestress. The initial goal of this research was to …
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Shear strength of concrete beams reinforced with glass fiber reinforced polymer bars without stirrups
… have been conducted to investigate the shear behavior of RC members with FRP bar. However, the shear strength design of FRPRC beams is similar to that of RC beams with steel bar except that the mechanical properties of FRP bars which affect the shear strength design shall be considered. …
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Kinematics-Based Modelling of Deep Transfer Girders in Reinforced Concrete Frame Structures
… Due to their small slenderness, they exhibit shear failure with disturbed deformation patterns differently from slender beams. Many experiments have revealed the complexity of the shear mechanisms of deep beams, and a number of formulations and models have been proposed attempting to explain …
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Effect of Severe Corrosion on Lateral Strength of Square RC Bridge Columns
… steel reinforcing ratio (ρ=2%,3%,4%) and shear span to depth ratio (L/d=2.5, 5) were the variables investigated in this study. For severely corroded RC columns, stirrups were assumed to be completely deteriorated and the concrete cover spalled off. Therefore, concrete cover and stirrups …
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Shear Strength of Full-Scale Prestressed Lightweight Concrete Girders with Composite Decks
… the strength of this material when designing for shear in beams. Design codes tend to penalize lightweight concrete due to its lower tensile strength and smoother interface along the shear cracks. In this study, there were twelve tests on six full-scale, prestressed girders with composite decks …
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Resistência ao esforço cortante em vigas curtas de concreto leve, sem armadura transversal
… "directly loaded beam"), it is evident that the shear strenght of the beam is greatly affected by the ratio of shear span to effective depth, a/d. Thus, for directly loaded beams with a/d ratios smaller than 2.5 (named "short beams") the shear strenght increases sharply, due to the presence of a …
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Behaviour of continuously supported self-compacting concrete deep beams
… SCC. A series of tests on eight reinforced two-span continuous deep beams made with SCC was performed. The main parameters investigated were the shear span-to-depth ratio, the amount and configuration of web reinforcement and the main longitudinal reinforcement ratio. All beams failed due to a …
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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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Three-dimensional peridynamic modelling of quasi-brittle structural elements
… that exhibit a wide range of failure modes. The shear-span-to-depth ratio is systematically varied from 1 to 8 to facilitate a study of different load-transfer mechanisms and failure modes. This is the first study to rigorously validate the predictive capability of a peridynamic model against a …
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Shear Strength Assessment of Corrosion-Damaged Prestressed Concrete Girders Repaired With CFRP
… beams, failure of the girders will likely be in shear, which is a sudden failure mode and not the preferred limit state. Therefore, it is beneficial to study repair practices and their advantages, as repairs are often more cost-effective than building entirely new structures. Repairing …
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The Viability of Steel-Concrete Composite Girder Bridges with Continuous Profiled Steel Deck
… quick and efficient method of constructing short-span, simply supported composite steel girder bridges. However, because shear studs can only be welded to the girder through the steel deck at rib locations, the number of shear stud locations is limited to the number of ribs in the shear span while …
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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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Shear strengthening of reinforced concrete beams with bi-directional carbon fiber reinforced polymer (CFRP) strips and CFRP anchors
… CFRP application resulted in significant shear strength gain in comparison to a uni-directional application. The objective of this thesis is to evaluate the behavior of reinforced concrete beams strengthened in shear with bi-directional CFRP strips and CFRP anchors so that the findings …
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Shear transfer between precast prestressed bridge beams and in-situ concrete crosshead in continuous structures
A detailed investigation was made to study the shear transfer between precast prestressed beams and in-situ concrete in a relatively new method of construction of continuous bridge decks where the ends of precast beams are connected to an integral in-situ crosshead away from the supports. Two …
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Rehabilitation of concrete girders with distressed end regions using innovative materials
… is localized at the end (i.e. under very short shear span) have not been studied in depth yet. On the other hand, SMA is a new class of material that is capable of restoring its original shape after being excessively deformed simply by heating. This “shape memory” phenomenon offers significant …
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Performance Evaluation of RC Flexural Elements Strengthened by Advanced Composites
… performance by varying the factors of; (e) beam shear span, (f) FRP anchorage length, (g) concrete surface preparation, (h) FRP end-anchoring, (i) beam pre-cracking, (j) introduction of air-voids within the bond line of FRP/concrete, (k) influence of cyclic loading and, (1) exposure to aggressive …
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