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İnşaat Mühendisliği Bölümü Yayın Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12416/395

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Browsing İnşaat Mühendisliği Bölümü Yayın Koleksiyonu by Journal "Canadian Journal of Civil Engineering"

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    Article
    Citation Count: Dinckal, Cigdem; Alemdar, Bulent N.; Gulkan, Polat H., "Dynamics of a beam-column element on an elastic foundation", Canadian Journal of Civil Engineering, Vol. 43, No. 8, pp. 685-701, (2016).
    Dynamics of a beam-column element on an elastic foundation
    (Canadian Science Publishing, 2016) Dinçkal, Çiğdem; Alemdar, Bülent N.; Gülkan, Polat H.; 26773; 5743
    An exact analytical solution of a harmonically vibrating beam-column element resting on an elastic Winkler foundation is derived. The solution covers four cases comprised of constant compressive or tensile axial force with the restrictions k(s) - m omega(2) < 0 and k(s) - m omega(2) > 0. The proposed solution is not restricted to a particular range of magnitudes of the foundation parameter. Closed form solutions of dynamic shape functions are explicitly derived for each sub-case to obtain frequency-dependent dynamic stiffness terms that constitute the exact dynamic stiffness matrices. Four numerical examples are provided to demonstrate the merits of the present study.
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    Article
    Citation Count: Kokpinar, Mehmet Ali; Kucukali, Serhat, "Effect of particle size on flip bucket scour", Canadian Journal of Civil Engineering, Vol. 43, No. 8, pp. 759-768, (2016).
    Effect of particle size on flip bucket scour
    (Canadian Science Publishing, 2016) Kökpinar, Mehmet Ali; Küçükali, Serhat; 20413
    This study quantifies the dimensionless maximum scour depth d(s)/D-50 downstream of flip buckets as a function of the square of the densimetric Froude number Fr-d(2), jet Reynolds number Re, lip angle, and sediment non-uniformity constant. The proposed formula is valid for Fr-d = 2.9-29.69, Re = 8.9 x 10(3)-4.2 x 10(5), and We > 32. Moreover, the scour profiles for different sediment sizes (D-50 = 3-17 mm) are presented from the Kigi Dam physical model and the effect of the Reynolds number on scour process is discussed. The prediction capacity of the proposed formula is compared with the existing empirical formulas in the literature and it is shown that the proposed dimensionally homogenous formula made better estimations. The procedure described here has a sound physical basis and it can be used to estimate the maximum scour depth downstream of flip buckets.