Fracture mechanics approach for failure of concrete shear key. I: Theory

Yoshio Kaneko, Jerome J. Connor, Thanasis Triantafillou, Christopher K. Leung

    Research output: Contribution to journalArticle

    Abstract

    The objective of this paper is to develop a simple mechanical model for the analysis and design of plain or fiber-reinforced concrete shear key joints. The method makes use of well-known results of fracture mechanics and truss model theory, combined in a simple model. The analysis employs a single discrete crack model under wedging force and a smeared crack model under remote shear force. The proposed formulation identifies two main fracture mechanisms for shear-off failure of key joints: single curvilinear cracking and development of multiple diagonal cracks. Furthermore, as a first step in developing design aids for the shear strength of shear keys, a simple design formula is obtained. The procedures developed in this study would be useful in designing shear key joints according to the precast concrete segmental method of construction, which is becoming increasingly popular.

    Original languageEnglish (US)
    Pages (from-to)681-700
    Number of pages20
    JournalJournal of Engineering Mechanics
    Volume119
    Issue number4
    DOIs
    StatePublished - Jan 1 1993

    Fingerprint

    Fracture mechanics
    Concretes
    Cracks
    Design aids
    Precast concrete
    Shear strength
    Reinforced concrete
    Fibers

    ASJC Scopus subject areas

    • Mechanics of Materials
    • Mechanical Engineering

    Cite this

    Fracture mechanics approach for failure of concrete shear key. I : Theory. / Kaneko, Yoshio; Connor, Jerome J.; Triantafillou, Thanasis; Leung, Christopher K.

    In: Journal of Engineering Mechanics, Vol. 119, No. 4, 01.01.1993, p. 681-700.

    Research output: Contribution to journalArticle

    Kaneko, Yoshio ; Connor, Jerome J. ; Triantafillou, Thanasis ; Leung, Christopher K. / Fracture mechanics approach for failure of concrete shear key. I : Theory. In: Journal of Engineering Mechanics. 1993 ; Vol. 119, No. 4. pp. 681-700.
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