DOWEL ACTION BETWEEN TWO CONCRETES
محتوى المقالة الرئيسي
الملخص
This paper reports eight tests in which in-plane shear forces are applied across the joint between two different concretes forming a composite action. Shear can be transmitted across the joint either by interlocking of the aggregate particles protruding from each face or by shearing of the reinforcement crossing the joint. Tests are conducted on initially cracked specimens by depending only on dowel action. The results of the tests are compared with theoretical results of the exponential equation presented by Millard and Johnson. The computer program of Al-Shaarbaf using the nonlinear behavior of concrete
is used to perform the analysis with inclusion of the exponential equation for dowel action in the interface layer. The program uses 20-node brick elements with embedded bar elements. This program is also applied to Hofbeck et al. tests. The comparison shows that the experimental and the analytical results give good agreement where the difference between the two is between (2.5-5)% . The use of the exponential equation gives good results when the concrete is assumed to be initially cracked as in construction joints.
تفاصيل المقالة
كيفية الاقتباس
تواريخ المنشور
المراجع
-. ACI (2005), Building Code requirements for structural concrete: ACI Committee 318-05. Farmington Hills: American Concrete Institute.
- Al-Shaarbaf,I.A.S., “Three dimensional non-linear finite element analysis of reinforced concrete beams in torsion”. Ph.D. Thesis, University of Bradford, U.K., 1990.
- Barbieri R.A., Gastal F.P.S.L. and Filho A.C., “Numerical model of prestressed composite concrete flexural members”, J. of Advanced Concrete Technology, Vol. 1, No.2, July 2003, Japan Concrete Institute.
- Beer G., “An isoparametric joint/interface element for finite element analysis”, Int. J. for Numerical Methods in Engineering, Vol.21, 1985.
- Desai C.S., Zaman M.M., Lightner J.G. and Siriwardane H.J., “Thin-layer element for interfaces and joints”, Int. J. for Numerical and Analytical Methods in Geomechanics, Vol.8, 1984.
- Fardis M.N. and Buyukozturk O., “Shear transfer model for reinforced concrete”, J. of the Engineering Mechanics Division, ASCE, Apr.1979.
- Grossfield B. and Birnstiel C., “Tests on T-beams with precast webs and cast-in-place flanges”, ACI J., Proceedings, V.59, No.6, June 1962.
- Hofbeck J.A., Ibrahim I.O. and Mattock A.H., “Shear transfer in reinforced concrete”, ACI J., Feb.1969.
- Hsu T.T.C., Mau S.T. and Chen B., “Theory of shear transfer strength of reinforced concrete”, ACI Struct. J., 84(2), 1987.
- Hwang S.J. and Lee H.J., “Analytical model for predicting shear strengths for exterior reinforced concrete beam-column joints for seismic resistance”, ACI Struct. J., 95(5), 1999.
- Hwang S.J. and Lee H.J., “Analytical model for predicting shear strengths for interior reinforced concrete beam-column joints for seismic resistance”, ACI Struct. J., 97(1), 2000.
- Loove R.E. and Patnaik A.K., “Horizontal shear strength of composite concrete beams with a rough interface”, PCI J., January-February 1994.
- Mast R.F., “Auxiliary reinforcement in concrete connections”, J.Struct. Div., Proc., ASCE, 94(6), 1968.
- Mattock A.H. and Hawkins N.M.,”Shear transfer in reinforced concrete –recent research”, PCI J., March-April 1972.
- Millard S.G. and Johnson R.P., “Shear transfer across cracks in reinforced concrete due to aggregate interlock and to dowel action”, Magazine of concrete research,Vol.36,No.126, March 1984.
- Millard S.G. and Johnson R.P., “Shear transfer in cracked reinforced concrete”, Magazine of Concrete Research, Vol.37, No.130, March 1985.
- Patnaik A.K., “Behavior of composite concrete beams with smooth interfaces”, Journal of Structural Engineering, ASCE, Vol.127, No.4, paper No.22384, April 2001.
- Patnaik A.K., “Longitudinal shear strength of composite beams with a rough interface and no ties”, Australian J. Struct. Engrg. 1(3), 1999.
- Patnaik A.K., “Discussion of „Evaluation of ACI 318-95 shear friction provisions‟ by R. Valluvan, M.E. Kerger and Jirsa J.O.”,ACI J., May-June 2000.
- Paulay T., Park R. and Philips M.H., “Horizontal construction joints in cast-in –place reinforced concrete”, Shear in Reinforced Concrete, SP-42, ACI, Farmington Hills, Michigan, 1974.
- Walraven J.C.,Frenay J. and Pruijssers A., “Influence of concrete strength and load history on the shear friction capacity of concrete members”, PCI J.,21(1),1987.
- Walraven J.C. and Reinhardt H.W., “Concrete Mechanics-Part A: Theory and experiments on the mechanical behavior of cracks in plain and reinforced concrete subjected to shear loading”, Hron.Vol.26, No.1A, 1981, pp 1-68.