Time‐Dependent Shear Transfer in Cracked Concrete: Part II
Publication: Journal of Structural Engineering
Volume 117, Issue 10
Abstract
A theoretical model is presented, analyzing in‐plane sustained shear tests on push‐off specimens, each provided with a central crack. The tests are described by an extended version of Walraven's two‐phase model accounting for the interlocking of aggregates and matrix material of the opposing crack half. The dowel mechanism of the embedded steel bars is represented by a modification of Rasmussen's formula. Two time‐dependent damage parameters are introduced, accounting both for a gradual deterioration of the cement‐based matrix material and for a change of the static friction coefficient between aggregates and matrix material. Simulation of a time‐dependent decrease of the short‐term concrete strength induces movements of the crack halves so that the total contact area between the crack halves is enlarged. The damage parameters appear proportional to and provide reliable predictions of the observed constitutive relations of a single crack. The calculated restraining stresses of the crack correspond well with in situ strain gauge measurements conducted on the embedded axial steel bars.
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References
1.
Braam, C. R., and Frénay, J. W. (1989). “Simple design method for partially pre‐stressed concrete structures.” IABSE Periodica, P‐136(3), 77–94.
2.
Fouré, B. (1985). “Experimental study on the resistance of concrete subjected to long‐term loading,” Béton, 229(435), 3–22, (in French).
3.
Frénay, J. W. (1989). “Time‐dependent shear transfer in cracked reinforced concrete,” thesis presented to the Delft Univ. of Tech., at Delft, The Netherlands, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
4.
Frénay, J. W., and Reinhardt, H. W. (1986). “Creep analysis of structures.” Proc. of Fourth RILEM Symp. on Creep and Shrinkage of Concrete, Vol. I, Evanston, Ill., 211–222.
5.
Frénay, J. W., Reinhardt, H. W., and Walraven, J. C. (1991). “Time‐dependent shear transfer in cracked concrete: Part I.” J. Struct. Engrg., ASCE, 117(8), 2900–2918.
6.
Garrett, G. G., Jenning, H. M., and Tait, R. B. (1979). “The fatigue hardening behaviour of cement‐based materials.” J. Mater. Sci., 14(3), 296–306.
7.
Millard, S. G., and Johnson, R. P. (1985). “Shear transfer in cracked reinf. concrete.” Mag. Concr. Res., 37(130), 3–15.
8.
Pruijssers, A. F. (1988). “Aggregate interlock and dowel action under monotonic and cyclic loading,” thesis presented to the Delft Univ. of Tech., at Delft, The Netherlands, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
9.
Rasmussen, B. H. (1963). “The carrying capacity of transversely loaded bolts and dowels embedded in concrete.” Bygningsstatiske Meddelser, 34(2), 39–55, (in Danish).
10.
Rostásy, F. S., and Kepp, B. (1982). “Time‐dependence of bond.” Bond in concrete, P. Bartos, ed., Appl. Sci. Publ., London, 183–192.
11.
Tassios, T. P., and Vintzeleou, E. N. (1987). “Concrete‐to‐concrete friction.” J. Struct. Engrg., ASCE 113(4), 832–849.
12.
Walraven, J. C. (1980). “Aggregate interlock: A theoretical and experimental analysis,” thesis presented to the Delft Univ. of Tech., at Delft, The Netherlands, in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
13.
Walraven, J. C. (1981). “Fundamental analysis of aggregate interlock.” J. Struct. Div., ASCE, 107(11), 2245–2270.
14.
Wittmann, F. H., and Zaitsev, J. (1974). “Deformation and crack extension of porous building materials subjected to short‐ and long‐term loading.” Deutscher Auss. für Stahlb., Heft 232, Berlin, 66‐145, (in German).
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Information
Published In
Journal of Structural Engineering
Volume 117 • Issue 10 • October 1991
Pages: 2919 - 2935
Copyright
Copyright © 1991 ASCE.
History
Published online: Oct 1, 1991
Published in print: Oct 1991
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