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Journal articles on the topic 'Concrete Breakout Failure'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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1

Huda, Amirul, and Henry Apriyatno. "Experiment of Pullout Expansion Anchor in Installation Cast in Place and Post Installed with Concrete Breakout Failure." Jurnal Teknik Sipil dan Perencanaan 23, no. 1 (2021): 37–45. http://dx.doi.org/10.15294/jtsp.v23i1.26246.

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Abstract: The use of anchors in construction is gaining popularity to connect steel and concrete constructions, and to transmit tensile loads acting onto the concrete. This research aims to find out the difference in the strength of anchor based on two methods of installations that are cast in place compared to post installed with the influence of effective depth, diameter of anchor and quality of concrete, and failure of concrete breakout. Expansion anchor used in this study is "Sanko" M12x100 and ready-mix concrete PT Bonindo Ungaran, fc 25 MPa with 6 pieces of test specimens of 300x300x150

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2

Chhetri, Sandip, and Rachel A. Chicchi. "Analytical Investigation of Tension Loaded Deformed Rebar Anchors in Concrete." CivilEng 2, no. 2 (2021): 442–58. http://dx.doi.org/10.3390/civileng2020025.

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Experimental testing of deformed rebar anchors (DRAs) has not been performed extensively, so there is limited test data to understand their failure behavior. This study aims to expand upon these limited tests and understand the behavior of these anchors, when loaded in tension. Analytical benchmark models were created using available test data and a parametric study of deformed rebar anchors was performed. Anchor diameter, spacing, embedment, and number of anchors were varied for a total of 49 concrete breakout simulations. The different failure modes of anchors were predicted analytically, wh

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3

Lee, Jong-Han, Eunsoo Choi, and Baik-Soon Cho. "Shear Failure Mode and Concrete Edge Breakout Resistance of Cast-In-Place Anchors in Steel Fiber-Reinforced Normal Strength Concrete." Applied Sciences 10, no. 19 (2020): 6883. http://dx.doi.org/10.3390/app10196883.

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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

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4

Chen, Zhao, Somayeh Nassiri, and Anthony Lamanna. "Investigation of a combined failure mode for screw anchors under tension." Advances in Structural Engineering 23, no. 13 (2020): 2803–12. http://dx.doi.org/10.1177/1369433220924795.

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A modified concrete capacity design method is available to predict the ultimate tensile strength ( Nu) of screw anchors. Screw anchors commonly fail in a combination of concrete breakout and pullout modes. This combined mode is not distinguished from the breakout mode in the modified concrete capacity design method, which may cause confusions to designers. To investigate the Nu of the combined mode ( Ncomb), this study included 144 unconfined tension tests on screw anchors from three manufacturers in three diameters and two effective embedment depths ( hef) per diameter. Approximately 80% of t

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5

Spyridis, Panagiotis, and Oladimeji B. Olalusi. "Predictive Modelling for Concrete Failure at Anchorages Using Machine Learning Techniques." Materials 14, no. 1 (2020): 62. http://dx.doi.org/10.3390/ma14010062.

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Anchorage to concrete plays a significant role in various aspects of modern construction. The structural performance of anchors under direct tensile load can lead to failure by concrete cone breakout. Concrete related failure modes are quasi-brittle, and as such, they may develop without prior warning indications of damage, while it also exposes the bearing component to damage propagation. As such, an adequate reliability assessment of anchors against concrete cone failure is of high importance, and improved precision and minimisation of uncertainty in the predictive model are critical. This c

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6

Jonak, Józef, Robert Karpiński, Michał Siegmund, Andrzej Wójcik, and Kamil Jonak. "Analysis of the Rock Failure Cone Size Relative to the Group Effect from a Triangular Anchorage System." Materials 13, no. 20 (2020): 4657. http://dx.doi.org/10.3390/ma13204657.

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This study employs the numerical analysis and experimental testing to analyze the fracturing mechanics and the size of rock cones formed in the pull-out of a system of three undercut anchors. The research sets out to broaden the knowledge regarding: (a) the potential of the undercut anchor pull-out process in mining of the rock mass, and (b) estimating the load-carrying capacity of anchors embedded in the rock mass (which is distinctly different from the anchorage to concrete). Undercut anchors are most commonly applied as fasteners of steel components in concrete structures. The new applicati

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7

Ashkinadze, Konstantin. "A practical method of design of concrete pedestals for columns for anchor rod tension breakout." Canadian Journal of Civil Engineering 37, no. 12 (2010): 1641–45. http://dx.doi.org/10.1139/l10-103.

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This technical note considers concrete pedestals bearing steel and concrete columns attached to the foundation with cast-in anchor rods. One mechanism of pedestal failure — the anchor rod breakout in tension — is considered. Uplift and shear forces and bending moments in the base cause tension in the anchor rods. Classical methods of statics and finite element analysis (FEA) are applicable to establish the anchor likely to fail first. For the design of the anchor rod embedment in the concrete, the new “cone balancing” method is proposed. It considers equilibrium of the pullout cone of concrete

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8

Bogdanić, Anton, Daniele Casucci, and Joško Ožbolt. "Numerical and Experimental Investigation on Concrete Splitting Failure of Anchor Channels." CivilEng 2, no. 2 (2021): 502–22. http://dx.doi.org/10.3390/civileng2020028.

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Concrete splitting failure due to tension load can occur when fastening systems are located close to an edge or corner of a concrete member, especially in thin members. This failure mode has not been extensively investigated for anchor channels. Given the current trend in the construction industry towards more slender concrete members, this failure mode will become more and more relevant. In addition, significantly different design rules in the United States and Europe indicate the need for harmonization between codes. Therefore, an extensive numerical parametric study was carried out to evalu

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9

Nassiri, Somayeh, Zhao Chen, Anthony Lamanna, and William Cofer. "Numerical simulation of failure mechanism in screw anchors under static tension." Advances in Structural Engineering 23, no. 16 (2020): 3385–400. http://dx.doi.org/10.1177/1369433220937143.

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Concrete screw anchors under tension commonly fail in a combined (pullout and concrete breakout) mode; however, currently, there is no mechanistic model to predict the load in this mode. Finite element models of screw anchors can help understand the mechanism of the combined mode and predict the ultimate strength in this mode ( Ncomb). In this study, finite element models were developed and validated by 37 tests of screw anchors in three different diameters ( d) and two effective embedment depths ( hef) per diameter. The finite element models were used to identify the combined failure mode and

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10

Tóth, Máté, Boglárka Bokor, and Akanshu Sharma. "Anchorage in steel fiber reinforced concrete – concept, experimental evidence and design recommendations for concrete cone and concrete edge breakout failure modes." Engineering Structures 181 (February 2019): 60–75. http://dx.doi.org/10.1016/j.engstruct.2018.12.007.

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11

Nilforoush, Rasoul. "A Refined Model for Predicting Concrete-Related Failure Load of Tension Loaded Cast-in-Place Headed Anchors in Uncracked Concrete." Nordic Concrete Research 60, no. 1 (2019): 105–29. http://dx.doi.org/10.2478/ncr-2019-0091.

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Abstract Current theoretical models for predicting the concrete cone breakout capacity of tension loaded headed anchors do not consider the influence of member thickness, size of anchor head, and orthogonal surface reinforcement. In the present study, the influence of the aforementioned parameters was studied both numerically and experimentally. Both the numerical and experimental results showed that the tensile resistance of headed anchors increases by increasing the member thickness or if orthogonal surface reinforcement is present. In addition, the anchorage capacity further increases with

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12

Kishiki, Shoichi, Xiaoyu Yang, Takanori Ishida, Nobuhiko Tatsumi, and Satoshi Yamada. "Experimental study of concrete breakout failure mechanism in an exposed column base with a foundation beam." Engineering Structures 243 (September 2021): 112661. http://dx.doi.org/10.1016/j.engstruct.2021.112661.

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13

Bokor, Boglárka, and Akanshu Sharma. "Numerical Investigations on Non-Rectangular Anchor Groups under Shear Loads Applied Perpendicular or Parallel to an Edge." CivilEng 2, no. 3 (2021): 692–711. http://dx.doi.org/10.3390/civileng2030038.

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Anchorages of non-rectangular configuration, though not covered by current design codes, are often used in practice due to functional or architectural needs. Frequently, such anchor groups are placed close to a concrete edge and are subjected to shear loads. The design of such anchorages requires engineering judgement and no clear rules are given in the codes and standards. In this work, numerical investigations using a nonlinear 3D FE analysis code are carried out on anchor groups with triangular and hexagonal anchor patterns to understand their behavior under shear loads. A microplane model

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14

Ruan, Xin, Xuefei Shi, and Xiaoxiang Li. "Failure analysis of tendon breakout on bottom slab of a pre-stressed concrete box gird bridge during construction." Engineering Failure Analysis 25 (October 2012): 291–303. http://dx.doi.org/10.1016/j.engfailanal.2012.05.017.

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15

Tóth, Máté, Boglárka Bokor, and Akanshu Sharma. "Befestigungen im stahlfaserverstärkten Beton bei Betonbruch – Stand der Technik und Bemessungsansatz/Anchorages in Steel Fiber Reinforced Concrete in the case of concrete breakout failure – State of the art and design concept." Bauingenieur 96, no. 07-08 (2021): 254–65. http://dx.doi.org/10.37544/0005-6650-2021-07-08-52.

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In der Ingenieurpraxis steigt die Nachfrage nach Befestigungsmitteln im stahlfaserverstärkten Beton (Steel Fibre Reinforced Concrete: SFRC), was ein tiefes Verständnis über das Tragverhalten erfordert. Zu typischen Anwendungen zählen Fußpunktkonstruktionen von Schwerlastregalsystemen, Schwermaschinen in Industrieböden, Stahlbetonfertigteilbau, Industrie- und Hochbau. Die teilweise widersprüchlichen Versuchsergebnisse aus verschiedenen Literaturstellen deuten auf die Notwendigkeit für tiefergehende Auswertungen hin, um die sichere Anwendung der Befestigungen in SFRC sicherzustellen. In diesem A

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16

Li, Fuhai, Hao Gao, Yilin Jiang, et al. "Tensile behavior of stud connectors in high strength concrete." Advances in Structural Engineering, September 25, 2021, 136943322110297. http://dx.doi.org/10.1177/13694332211029731.

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Stud connectors are commonly used in steel-concrete composite structures. As high strength concrete (HSC) will be applied in the construction of a composite structure, it is needed to study the performance of stud connectors in HSC. In this study, tension (pull-out) tests were conducted on the studs with different combinations of diameters- d(13, 16, and 19 mm) and effective embedment depths- h ef (40, 60, and 80 mm) in HSC with a 28-day compressive strength of 88 MPa. Based on the experimental results, the concrete breakout failure mode dominates and only the scenario with the smallest diamet

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17

Khan, Pradip K., and Phillip J. Harter. "DEVELOPMENT OF CONCRETE SHEAR STRENGTH FOR SHEAR LUGS IN UNCONFINED GROUT POCKETS." Proceedings of International Structural Engineering and Construction 2, no. 1 (2015). http://dx.doi.org/10.14455/isec.res.2015.172.

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The base plate anchorage system for major equipment supports is often designed with a combination of shear lugs and anchor bolts to resist equipment support reactions. Shear lugs are designed to transmit the design shear forces from the support base plates to the foundation concrete. The shear lugs are commonly placed inside a pre-formed grout pocket that is eventually filled with non-shrink high strength grout. The pre-formed grout pockets are sometimes left open to a free edge of concrete on one or more sides for ease of equipment installation and alignment before they are filled with grout.

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