Evaluation of Shear Resistance of Perfobond Strip Based on Simple Push-Out Test

Nakajima, Akira; Koseki, Soichiro; Hashimoto, Minoru; Suzuki, Yasuo; Nguyen, Minh Hai

doi:10.2208/jscejseee.68.495

Cited by 6 publications

(5 citation statements)

References 2 publications

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“…(1) Push-out test specimens Nakajima et al 7) investigated the effect of the perforation diameter, the dimension of the concrete block and the concrete compressive strength on the shear resistance of the perfobond strip in which the perfobond steel plate with a perforation was embedded in the concrete block. In this research, the same type of specimens as shown in Fig.…”

Section: Outline Of Push-out Testmentioning

confidence: 99%

“…(1) Evaluation formula considering influence of perfobond steel plate thickness In Nakajima et al's past research 7) , the formula for evaluating the shear resistance of the perfobond strip without the penetrating rebar was constructed taking into consideration of the dimension of the concrete block as well as the perforation diameter and the concrete compressive strength as follows:…”

Section: Evaluation Formula Of Shear Resistance Of Per-fobond Stripmentioning

confidence: 99%

“…However, the shear resistance of the perfobond strip is affected by the restrained condition of the surrounding concrete and the arrangement of aggregates of concrete in the per-foration as well as the perforation diameter and the concrete compressive strength as indicated by Fujii et al 6) and Nakajima el al. 7) . Therefore, in the perfobond strip with the penetrating rebar, more factors may affect its shear resistance.…”

Section: Introductionmentioning

confidence: 99%

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Strain Behavior of Penetrating Rebar in Perfobond Strip and Its Evaluation of Shear Resistance

Nakajima

Nguyen

2016

Journal of JSCE

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A perfobond strip is widely used as the validated shear connector in various steel-concrete hybrid structures. In general, the penetrating rebar is arranged in the perforation to suppress the brittle fracture of the perfobond strip due to the shear failure of the concrete at the perforation. However, the effect of the penetrating rebar on the shear resistance, and the effect of the perforation diameter, the penetrating rebar diameter, and the thickness of the steel plate on the behavior of the penetrating rebar have not been clarified until now. In this research, in order to investigate the effect of the penetrating rebar on the shear resistance of the perfobond strip, simple push-out tests were conducted paying attention to the relation between the perforation diameter and the penetrating rebar diameter, and the variations in the steel plate thickness. Furthermore, to obtain the shear contribution of the penetrating rebar to the shear resistance of the perfobond strip, a nonlinear numerical analysis was conducted. As a result, a design formula was constructed to evaluate the shear resistance of the perfobond strip with the penetrating rebar.

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Section: Outline Of Push-out Testmentioning

confidence: 99%

Section: Evaluation Formula Of Shear Resistance Of Per-fobond Stripmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Strain Behavior of Penetrating Rebar in Perfobond Strip and Its Evaluation of Shear Resistance

Nakajima

Nguyen

2016

Journal of JSCE

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“…on the shear response, the modes of failure, and the slip response of the PBL [16,17]. Furthermore, it was reported that the shear resistance and the failure modes (local shear failure and splitting failure) of the PBL shear connector were also dependent on the concrete sizes of the adjoining concrete blocks of the PBL in the simple push-out test [18]. Considering the PBL shear connector relatively more effective concerning the structural integrity compared with the conventional shear connectors (head studs and group studs etc.…”

Section: Introductionmentioning

confidence: 99%

Numerical Evaluation of the Perfobond (PBL) Shear Connector Subjected to Lateral Pressure Using Coupled Rigid Body Spring Model (RBSM) and Nonlinear Solid Finite Element Method (FEM)

et al. 2020

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An analytical investigation focusing on the concrete damage progress of the PBL shear connector under the influence of various lateral pressures, employing a coupled RBSM and solid FEM model was carried out. The analytical model succeeded in simulating the test shear capacities and the failure modes adequately. The internal failure process was also clarified; the two horizontal cracks occurred near the top of the concrete dowels through the hole of the perforated steel plate, and afterward, the two vertical cracks also initiated and propagated along with the shear surface. In a low lateral pressure case, the shear strength was determined by the vertical cracks propagated along the shear surface. While as the amount of applied lateral pressure increased, the shear strength of the two vertical cracked surfaces was enhanced, and the shear strength of the PBL was characterized by the occurrence of the splitting cracks and caused the splitting failure into the side concrete blocks. Moreover, the combined effects of lateral pressure and hole diameters were also evaluated numerically, and it was found that the increase in shear strength was more in a large diameter case subjected to high lateral pressure because of the wide compressive regions generated around the concrete dowel.

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“…Furthermore, Fujii et al derived theoretically an ultimate slip strength evaluation formula of PBL considering the effects of confinement factors [6]. Also Andrä, Hosain et al and Nakajima et al have proposed formulas of a different type, respectively, based on the experimental data [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Ultimate Strip Strength of Perfobond Strip With Small Hole Confined by Concrete Cover

Tani¹

2019

GEOMATE

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The ultimate slip strength of a perfobond strip (called "PBL" hereafter) depends significantly on the concrete confinement conditions around PBL hole as well as concrete shear fractures at the hole. If the hole is small, the effect of concrete confinement will still more strongly appear. In this paper, focusing on the concrete confinement due to only concrete cover by removing other confinements perfectly, the ultimate slip strength of PBL with small hole is investigated by conducting push-out tests, in which the diameter of the PBL hole is set at 30 mm and the thickness of concrete cover is varied from 0 to 100 mm. Test results show that the concrete separates into two blocks with concrete crack parallel to the PBL plate and that the ultimate slip strength of a 50-mm-thick concrete cover is 34.4 kN, which is about 10 times of the slip strength without concrete cover (=3.5 kN). Thus, it can be concluded that thicker concrete cover makes the slip strength remarkably larger, in the case of small-hole PBLs. In accordance with the experimental results in this paper, a method for PBL slip strength evaluation is shown based on the concept proposed by Fujii et al.

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Evaluation of Shear Resistance of Perfobond Strip Based on Simple Push-Out Test

Cited by 6 publications

References 2 publications

Strain Behavior of Penetrating Rebar in Perfobond Strip and Its Evaluation of Shear Resistance

Strain Behavior of Penetrating Rebar in Perfobond Strip and Its Evaluation of Shear Resistance

Numerical Evaluation of the Perfobond (PBL) Shear Connector Subjected to Lateral Pressure Using Coupled Rigid Body Spring Model (RBSM) and Nonlinear Solid Finite Element Method (FEM)

Ultimate Strip Strength of Perfobond Strip With Small Hole Confined by Concrete Cover

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