Breakout shear strength of cast-in-place anchors using shaking table tests

Park, Yong Myung; Kim, Tae Hyung; Kim, Dong Hyun; Kang, Choong Hyun; Lee, Jong-Han

doi:10.1680/jstbu.16.00241

Cited by 5 publications

(3 citation statements)

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“…In addition, anchor systems are used to connect new structural members for strengthening and retrofitting existing structures [1]. In particular, large-scale structural members, facilities, and equipment are connected using pre-installed cast-in-place (CIP) anchors [2]. The failure of anchors installed in concrete is mainly dependent on the strength of the steel anchor and concrete.…”

Section: Introductionmentioning

confidence: 99%

Shear Failure Mode and Concrete Edge Breakout Resistance of Cast-In-Place Anchors in Steel Fiber-Reinforced Normal Strength Concrete

2020

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Concrete edge failure of a single anchor in concrete is strongly dependent on the tensile performance of the concrete, which can be greatly improved by the addition of steel fibers. This study investigated the effect of steel fibers on the shear failure mode and edge breakout resistance of anchors installed in steel fiber-reinforced concrete (SFRC) with fiber volume percentages of 0.33, 0.67, and 1.00%. The anchor used in the study was 30 mm in diameter, with an edge distance of 75 mm and embedment depth of 240 mm. In addition to the anchor specimens, beam specimens were prepared to assess the relationship between the tensile performance of SFRC beams and the shear resistance of SFRC anchors. The ultimate flexural strength of the beam and the breakout shear resistance of the anchor increased almost linearly with increasing volume fractions of fiber. Therefore, based on the ACI 318 design equation, a term was proposed using the ultimate flexural strength of concrete instead of the compressive strength to determine the concrete breakout shear resistance of an anchor in the SFRC. The calculated shear resistance of anchors in both the plain concrete and SFRC were in good agreement with the measurements. In addition to the load capacity of the SFRC anchors, the energy absorption capacity showed a linear increase with that of the SFRC beam.

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Section: Introductionmentioning

confidence: 99%

Shear Failure Mode and Concrete Edge Breakout Resistance of Cast-In-Place Anchors in Steel Fiber-Reinforced Normal Strength Concrete

2020

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“…Anchors installed in concrete fail due to steel fracture of the anchor or concrete fracture under tensile or shear loadings [1]. Fig.…”

Section: Introductionmentioning

confidence: 99%

Shear Behavior and Capacity of CIP Anchors Installed in Steel Fiber-Reinforced Concrete

2017

Aug. 10-11, 2017 Singapore Back RTSECT-17, CABES-17, BDCATE-17, HISHTM-17, BELSD-17 &Amp; BBMPS-17

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“…Pages 883-884 http://dx.doi.org/10.1680Pages 883-884 http://dx.doi.org/10. /jstbu.2017 ICE Publishing: All rights reserved Commonly used connection details such as anchorages often receive little attention in both research and design, so in the final paper of this issue it is encouraging to see Park et al (2017) describe an experimental programme to investigate the breakout shear strength of cast-in-place anchors under dynamic loads. The testing, carried out using a shaking table, was designed to establish the benefit of stirrup-reinforced anchors in uncracked and cracked concrete.…”

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Editorial

Mullett¹

2017

Proceedings of the Institution of Civil Engineers - Structures

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With an increasing reliance on analysis software and an expanding range of prescriptive engineering codes and standards, it is always reassuring to observe the behaviour of structures in the real world. The first paper in the December 2017 issue of the journal provides a detailed look at the behaviour of reinforced concrete lattice-girder-slabs during manufacture, construction and in operation. Newell and Goggins (2017) demonstrate that the prediction of actual behaviour can be complex and is always subject to a degree of uncertainty therefore the application of Structural Health Monitoring (SHM) techniques can aid our understanding of structures and improve our prediction of behaviour both during construction and in operation. With the popularity of alternative methods of construction in the market increasing, and both an environmental and commercial drive to produce designs that are more efficient, obtaining data on the long-term performance of structures will be increasingly important to ensure that designs are safe, that codes and standards remain appropriate and that long-term serviceability performance can be maintained. It will be interesting to see if the rise of the so-called 'Internet Of Things' will provide a renaissance for SHM in the form of widespread data collection from in-situ buildings.Continuing with the theme of predicting structural behaviour, Bozer (2017) provides an in-depth study into the relative performance of different modelling parameters on the prediction of the non-linear seismic response of concrete structures. The paper discusses methods typically available in commercially available software to represent the non-linear response of reinforced concrete to cyclic loading, including energy dissipation and stiffness degradation, and compares the predicted performance against physical tests. The paper then examines the impact of the different modelling approaches on the performance of a sample building and demonstrates the benefits of 'fibre-models' over simplified 'plastic hinge models' to estimate behaviour, albeit at additional computational expense. Nonlinear methods that were once the reserve of sophisticated solvers are now increasingly common in standard structural engineering software and therefore an understanding of how the features and limitations of material models and modelling approaches can affect predicted structural behaviour is increasingly important. Papers exploring the sensitivity and accuracy of different numerical methods on structural design are always welcome.The strengthening of existing structures to increase capacity or improve performance can be a difficult and complex task especially when they are in use. There are many constraints that limit the application of traditional construction techniques and it is therefore an area where carbon-fibre-reinforced polymers (CFRP) are often employed. Shankar et al. (2017) provide a study into the behaviour of concrete-filled steel tubular (CFST) columns strengthened using strips of CFRP and explore the impact of both t...

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Breakout shear strength of cast-in-place anchors using shaking table tests

Cited by 5 publications

References 2 publications

Shear Failure Mode and Concrete Edge Breakout Resistance of Cast-In-Place Anchors in Steel Fiber-Reinforced Normal Strength Concrete

Shear Failure Mode and Concrete Edge Breakout Resistance of Cast-In-Place Anchors in Steel Fiber-Reinforced Normal Strength Concrete

Shear Behavior and Capacity of CIP Anchors Installed in Steel Fiber-Reinforced Concrete

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