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Shear Friction Strength Model of Concrete considering Transverse Reinforcement and Axial Stresses
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 Title & Authors
Shear Friction Strength Model of Concrete considering Transverse Reinforcement and Axial Stresses
Hwnag, Yong-Ha; Yang, Keun-Hyeok;
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Shear friction strength model of concrete was proposed to explain the direct friction mechanism at the concrete interfaces intersecting two structural elements. The model was derived from a mechanism analysis based on the upper-bound theorem of concrete plasticity considering the effect of transverse reinforcement and applied axial loads on the shear strength at concrete interfaces. Concrete was modelled as a rigid-perfectly plastic material obeying modified Coulomb failure criteria. To allow the influence of concrete type and maximum aggregate size on the effectiveness strength of concrete, the stress-strain models proposed by Yang et al. and Hordijk were employed in compression and tension, respectively. From the conversion of these stress-strain models into rigidly perfect materials, the effectiveness factor for compression, ratio of effective tensile strength to compressive strength and angle of concrete friction were then mathematically generalized. The proposed shear friction strength model was compared with 91 push-off specimens compiled from the available literature. Unlike the existing equations or code equations, the proposed model possessed an application of diversity against various parameters. As a result, the mean and standard deviation of the ratios between experiments and predictions using the present model are 0.95 and 0.15, respectively, indicating a better accuracy and less variation than the other equations, regardless of concrete type, the amount of transverse reinforcement, and the magnitude of applied axial stresses.
shear friction strength;upper-bound theorem;transverse reinforcement;axial stresses;
 Cited by
시공줄눈이 있는 콘크리트 경계면의 전단마찰 내력에 대한 보강철근의 영향,황용하;양근혁;

한국콘크리트학회논문집, 2016. vol.28. 5, pp.555-562 crossref(new window)
콘크리트의 전단마찰 내력에 대한 횡보강근 및 압축응력의 영향,황용하;양근혁;

한국콘크리트학회논문집, 2016. vol.28. 4, pp.419-426 crossref(new window)
Effect of Shear Reinforcement and Compressive Stress on the Shear Friction Strength of Concrete, Journal of the Korea Concrete Institute, 2016, 28, 4, 419  crossref(new windwow)
Effect of Transverse Reinforcement on the Shear Friction Capacity of Concrete Interfaces with Construction Joint, Journal of the Korea Concrete Institute, 2016, 28, 5, 555  crossref(new windwow)
ACI Committee 318, Building Code Requirements for Structural Concrete (ACI 318-11) and Commentary, American Concrete Institute, Farmington Hills, Michigan, USA, 2011, p.187.

Mun, J. H., Mun, J. S., and Yang, K. H., "Stress-Strain Relationship of Heavyweight Concrete Using Magnetite Aggregate", Architectural Institute of Korea, Vol.29, No.8, 2013, pp.85-92.

Yang, K. H., Sim, J. I., Kang, J. H., and Ashour, A. F., "Shear Capacity of Monolithic Concrete Joints Without Transverse Reinforcement", Magazine of Concrete Research, Vol.64, No.9, 2012, pp.767-780. crossref(new window)

AASHTO, AAHSTO LRFD Bridge Design Specifications, American Association of State Highway and Transportation Officials, 2012, pp.5.78-5.80.

Shaikh, A. F., "Proposed Revisions to Shear-Friction Provisions", PCI Journal, Vol.23, No.2, 1978, pp.12-21.

Walraven, J. C., Frenay, J., and Pruijssers, A., "Influence of Concrete Strength and Load History on the Shear Friction Capacity of Concrete Members", PCI Journal, Vol.32, No.1, 1987, pp.66-84. crossref(new window)

Loov, R. E., and Patnaik, A. K., "Horizontal Shear Strength of Composite Concrete Beams With a Rough Interface", PCI Journal, Vol.39, No.1, 1994, pp.48-69. crossref(new window)

Mattock, A. H., "Shear Friction and High-Strength Concrete", ACI Structural Journal, Vol.98, No.1, 2001, pp.50-59.

Nielsen, M. P., Limit Analysis and Concrete Plasticity, CRC Press, USA, 2010, pp.629-644.

Mattock, A. H., Shear Transfer under Monotonic Loading, Acrossan Interface Between Concretes Cast at Different Times, Report No. SM76-3, University of Washington Department of Civil Engineering, Seattle, Washington, 1976, pp.1-35.

Hofbeck, J. A., Ibrahim, I. O., and Mattock, A. H., "Shear Transfer in Reinforced Concrete", ACI Structural Journal, Vol.66, No.2, 1969, pp.119-128.

Mattock, A. H., Li, W. K., and Wang, T. C., "Shear Transfer in Lightweight Reinforced Concrete", PCI Journal, Vol.32, No.1, 1976, pp.20-39.

Mattock, A. H., and Hawkins, N. M., "Shear Transfer in Reinforced Concrete - Recent Research", PCI Journal, Vol.17, No.2, 1972, pp.76-93.

Mattock, A. H., Johal, L., and Chow, H. C., "Shear Transfer in Reinforced Concrete with Moment or Tension Acting Across the Shear Plane", PCI Journal, Vol.20, No.4, 1975, pp.76-93. crossref(new window)

Yang, K. H., Mun, J. H., Cho, M. S., and Kang, T. H. K., "A Stress-Strain Model for Various Unconfined Concrete in Compression", ACI Structural Journal, Vol.111, No.4, 2014, pp.819-826.

Hodrdok, D. A. "Local Approach to Fatigue of Concrete", PhD thesis, Delft University of Technology, Delft, Netherlands, 1991, p.210.

CEB-FIP, CEB-FIP Modle Code 1990 for Concrete Structures, Committee Euro International Du Beton, Lausanne, Switzerland, 1993, pp.213-214.

Sim, J. I., Yang, K. H., Lee, E. T., and Yi, S. T., "Effects of Aggregate and Specimen Sizes on Lightweight Concrete Fracture Energy", Journal of Materials in Civil Engineering, ASCE, Vol.26, No.5, 2014, pp.845-854. crossref(new window)