Experimental Evaluation of Strut-and-Tie Model of Indeterminate Deep Beam

Garber, David; Gallardo, José M.; Huaco, Guillermo; Samaras, Vasileios; Breen, J E

doi:10.14359/51686738

Cited by 9 publications

(6 citation statements)

References 2 publications

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“…Recently many full-scale experiments have been performed to investigate precisely structural behavior of concrete (Smith et al 2014and Garber et al 2014. In order to verify the structural behavior and the effect of concrete strength in H-IPC girders, full size girders were manufactured and static loading tests were conducted.…”

Section: Design and Manufacturing Of Specimenmentioning

confidence: 99%

Effects of concrete strength on structural behavior of holed-incrementally prestressed concrete (H-IPC) girder

Han¹,

Kim

Kang³

2015

Advances in concrete construction

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Holed-Incrementally Prestressed Concrete (H-IPC) girders are designed using the following new design concepts. At first, web openings reduce the self-weight of the girder, and also diffuse prestressing tendon anchorages. The reduced end anchoring forces decrease the web thickness of the end sections. Additionally, precast technology help to improve the quality of concrete and to reduce the construction period at the site. For experimentally verification, two 50 m full-scale H-IPC girders are manufactured with different concrete strength of 55 MPa and 80 MPa. The safety, stiffness, ductility, serviceability and crack development of H-IPC girder are measured and compared with each other for different strengths. Both girders show enough strength to carry live load and good stiffness to satisfy the design criteria. The experimental result shows the advantages of using high strength concrete and adopting precast girder. The test data can be used as a criterion for safety control and maintenance of the H-IPC girder.

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Section: Design and Manufacturing Of Specimenmentioning

confidence: 99%

Effects of concrete strength on structural behavior of holed-incrementally prestressed concrete (H-IPC) girder

Han¹,

Kim

Kang³

2015

Advances in concrete construction

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“…The equations that were first presented by Desayi, P. and Krishnan [13] are used to describe the stress-strain relation of concrete. The equations are given below, and applications of these equations are shown in Figure. Similarly for the beam strengthened in the vertical direction, the Young's modulus is taken to be 240x10 3 MPa in the y-axis while E for the other axes is 6.89 MPa.…”

Section: Materials Propertiesmentioning

confidence: 99%

“…On the other hand CFRP sheets are orthogonal materials where the above mentioned strength can be achieved only in the direction of their grid. In simulation of CFRP sheets in the ANSYS program linear elastic properties was assumed with Young's modulus of 240x103 MPa in the x-axis for the beam strengthened in the horizontal direction while 6.89 MPa were used for the other transverse directions as the program is does not accept zero value for E y and E z .…”

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confidence: 99%

Analysis of Fiber Reinforced Concrete Deep Beams with Large Opening Strengthened by CFRP Laminates

Salahaldin¹,

Ali²,

Kassim³

2015

KUJSS

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In this study, the behavior of reinforced concrete deep beams with large opening, used for efficient creation of doors, windows, and passage openings, which were strengthened by carbon fiber-reinforced polymer (CFRP) sheets, is examined. This analysis was carried out using finite element method and ANSYS computer program. The fiber reinforced concrete deep beams were subjected to a point monotonic loading. The results of the suggested analysis procedure were verified with experimentally tested deep beams given in reference [1]. The parametric study examined the CFRP sheets configuration and their thickness used as external reinforcement, and the results of strengthened beams are compared with reference unstrengthen deep beams to insure the effectiveness of external reinforcing method. The strengthened beams indicate an increase in load carrying capacity up to 25, 53 and 59% for vertical orientation CFRP sheets with 0.7, 1.4 and 2.8 mm thickness respectively. On the other hand, horizontal strengthening raises beams strength by 54, 78 and 90% for 0.7, 1.4 and 2.8 mm thickness respectively. Meanwhile deep beams with ring type configuration sheets augmented the strength by 85, 92 and 97% for the three types of the used sheet thicknesses. Load-deflection relationships indicate that the combined reinforced concrete and CFRP laminate system possess some nonlinear deformability. The use of CFRP laminates on the deep beams was found to have an influence on the stress concentration and the mode of failure. Anchoring the CFRP laminates around the opening regions helped in using a larger portion of the strength of the laminates. The deep beams strengthened by CFRP sheets exhibited diagonal shear cracks that were developed at a much slower rate and were ultimately accompanied by the peeling off of the CFRP laminates.

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“…• Proper Detailing: Tie reinforcement must be properly anchored to develop the required tie force and other reinforcement must be provided so that the member has D-Region Principle tensile strain trajectory Principle compression strain trajectory the deformation capacity to properly distribute the forces. Improper detailing can lead to lower capacities than desired [15].…”

Section: Theoretical Background Of Strut-and-tie Modelingmentioning

confidence: 99%

“…The limiting compressive stress of the node face (fcu) depends on the type of node (CCC, CCT, or CTT), the face where the nominal resistance is being found (bearing face, back face, or strut-to-node interface), the compressive strength of the concrete (f'c), and any confinement effects from surrounding concrete (accounted for through m), as shown in [2][3][4][5][6][7][8][9][10][11][12][13][14][15] Note that unlike ACI 318-14, AASHTO LRFD [19] does not account for the effect of stresses being able to spread along the length of struts or not being able to in members with constant cross-sectional areas along the length of struts.…”

Section: Aashto Lrfd Bridge Design Specification [19]mentioning

confidence: 99%

Study on Strut and Node Behavior in Strut-and-Tie Modeling

Rezaei¹

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David Garber, who always stood by my side in this difficult path, and helped me with his well-thought-out advices. Without his support, valuable guidance, contribution, and patience, this dissertation would not have been possible. I would like to thank Gary Klein, one of the most knowledgeable and well-known civil engineers especially in strut-and-tie field, for his valuable advice, and crucial contribution, which made him a backbone of this dissertation. His truly scientific intuition, ideas and passions in science has inspired and nourished my intellectual maturity.

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Experimental Evaluation of Strut-and-Tie Model of Indeterminate Deep Beam

Cited by 9 publications

References 2 publications

Effects of concrete strength on structural behavior of holed-incrementally prestressed concrete (H-IPC) girder

Effects of concrete strength on structural behavior of holed-incrementally prestressed concrete (H-IPC) girder

Analysis of Fiber Reinforced Concrete Deep Beams with Large Opening Strengthened by CFRP Laminates

Study on Strut and Node Behavior in Strut-and-Tie Modeling

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