Numerical investigation on the shear behavior of slender reinforced concrete beams without shear reinforcement differed by various boundary and loading conditions

Gedik, Yasar Hanifi; Betschoga, Christoph; Tung, Nguyen Duc; Tue, Nguyen Viet

doi:10.1016/j.istruc.2023.02.052

Cited by 2 publications

(2 citation statements)

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“…Tie constraints were used for the contact relationship between the RPC and concrete. Line constraints were used to simulate the boundary conditions [4], and the support constraints were set on the original concrete beams. One end was supported on a fixed hinge bearing, and one end was supported on a movable hinge bearing.…”

Section: Destruction Mechanismsmentioning

confidence: 99%

“…Gedik Y.H. [4] installed longitudinal carbon fiber-reinforced polymer tendons on the surface of stone beams and constructed a total of 11 stone beams with different reinforcement and prestressing levels for testing their bending performance. The results showed that the composite beams configured with CFRP tendons with or without applied prestressing exhibited ductile failure, with significant deflection and multiple cracks after damage.…”

Section: Introductionmentioning

confidence: 99%

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Study on the Mechanical Performance of RC Beams under Load Reinforced by a Thin Layer of Reactive Powder Concrete on Four Sides

Liao,

Yang,

Yang

2024

Buildings

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To repair reinforced concrete beams efficiently in a limited building space, the four-sided application of a reinforcing thin layer of reactive powder concrete (“RPCTL”) was proposed to improve the bending capacity of the members. Static flexural tests of one comparison beam and five reinforced beams were completed on a four-point centralized loading device. Changes in deflection, cracks, stresses, and damage characteristics of the specimens were measured under various levels of loading. The test results showed that the damage patterns of the reinforced specimens were dominated by the yielding of longitudinal tensile reinforcement at the bottoms of the beams and the crushing of the cementitious material in the top compression zones of the beams. The cracking load greatly increased by 1.42 to 7.12 times, and the ultimate bearing capacity increased by 0.29 to 1.41 times. The distribution characteristics and dynamic changes in the displacement, stress, and damage of the specimens were dynamically simulated by finite element software. The effects of reinforcement and initial load-holding level on the reinforcement effect were investigated. A bending capacity calculation formula for RPCTL reinforcement technology is proposed that aligns with the test results and can provide a reference for the design of RPCTL reinforcement.

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Section: Destruction Mechanismsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%