SHEAR PERFORMANCE OF STEEL FIBER IN PRESTRESSED CONCRETE RAILWAY SLEEPERS

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HASANI A.; ABEDINI KARSHK M.

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Journal Paper

Paper Information

Journal: MODARES TECHNICAL AND ENGINEERING Year:2004 | Volume:- | Issue:15 Page(s): 27-36

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Title

SHEAR PERFORMANCE OF STEEL FIBER IN PRESTRESSED CONCRETE RAILWAY SLEEPERS

Author(s)

HASANI A. | ABEDINI KARSHK M. | Issue Writer Certificate

Keywords

PRESTRESSED CONCRETE SLEEPER

STEEL FIBER

SHEAR STRENGTH

RAILWAY

Abstract

The addition of STEEL FIBERs to concrete helps improving post -cracking tensile strength and hence leads to a significant increase in SHEAR STRENGTH of reinforced concrete beams. Using STEEL FIBER in structural elements such as pre-cast concrete beams or prestressed beams in road and RAILWAY bridges ductility, increase the energy absorption, gives better performance in fatigue, increase shear capacity and incorporates less stirrups spacing. In this paper, the shear performance of STEEL FIBER in monoblock priestess’s concrete sleepers is investigated. From the analyses result, equations for determination of shear capacity of STEEL FIBER used in concrete are determined. Monoblock priestess’s concrete sleepers are in fact priestess’s concrete beams with critical loading compared to conventional concrete beams (bridge beams in road and RAILWAY), where the beams have no stirrups even in area where the prestressing is applied. According to the results when STEEL FIBERs are adde d to the Prestressed concrete beams, of shear capacity, a decrease in stirrups amount, a better crack control, and some increase in stiffness and an increase ultimate strength of such beams can be gained. Hence, it can be said that in PRESTRESSED CONCRETE SLEEPERs instead of increasing the prestressing parameter (which reduces the ultimate stiffness of the sleepers), addition of fibers is useful increase the beam stiffness after cracking and to increase the ultimate shear capacity of the beams. The results of experimental study also showed that the presented formulae for calculation of shear capacity of STEEL FIBER in concrete have been are overestimated.

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APA: Copy

HASANI, A., & ABEDINI KARSHK, M.. (2004). SHEAR PERFORMANCE OF STEEL FIBER IN PRESTRESSED CONCRETE RAILWAY SLEEPERS. MODARES TECHNICAL AND ENGINEERING, -(15), 27-36. SID. https://sid.ir/paper/532113/en

Vancouver: Copy

HASANI A., ABEDINI KARSHK M.. SHEAR PERFORMANCE OF STEEL FIBER IN PRESTRESSED CONCRETE RAILWAY SLEEPERS. MODARES TECHNICAL AND ENGINEERING[Internet]. 2004;-(15):27-36. Available from: https://sid.ir/paper/532113/en

IEEE: Copy

A. HASANI, and M. ABEDINI KARSHK, “SHEAR PERFORMANCE OF STEEL FIBER IN PRESTRESSED CONCRETE RAILWAY SLEEPERS,” MODARES TECHNICAL AND ENGINEERING, vol. -, no. 15, pp. 27–36, 2004, [Online]. Available: https://sid.ir/paper/532113/en

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