COMPARISION OF HIGH STRENGTH AND ORDINARY REINFORCED CONCRETE SLABS UNDER FIXED BOUNDARY CONDITIONS BY YIELD LINE THEORY

In this study, one of the fairly known practical plate problems was investigated, a square plate laterally loaded with single concentrated load at mid-span under all edges clamped. Clamping was made continuously along the edges with a small quantity of rotation. This type of clamping could be called as partially fixed. The primal objective of the present study is to investigate the behavior of two slabs with different dimensions (660x660x40 mm and 1080x1080x40 mm), produced with high-strength and ordinary concrete. High-strength reinforced concrete plates containing 8 mm orthogonal reinforcement with 100 mm spacing were constructed and tested. Load-deflection relationships were investigated. Mechanical properties of high-strength and ordinary concrete were examined. Fracture patterns of plates were presented. Comparisions were made both for high strength and ordinary concrete slabs.

___

  • [1] TS 500, Betonarme Yapıların Hesap ve Yapım Kuralları, TSE, Ankara, 1985.
  • [2] CEB-FIP (MC90) Model Code for Concrete Structures, Committee Euro-International du Beton, Bulletin d’Information No. 213/214, Lausanne, Switzerland, 1990.
  • [3] ACI 318-89, Building Code Requirements for Reinforced Concrete, American Concrete Institute, Detroit, 1989.
  • [4] Nilson, A.H., Design of Concrete Structures, Mc-Graw Hill, 2000.
  • [5] Johansen, K. W. (1943) Brudlinieteorier. Jul. Gjellerups Forlag, Copenhagen , 191pp. (Yield Line theory (1962), Translated by Cement and Concrete Association, London, 181pp ).
  • [6] Kennedy G. ve Goodchild, C. (2000) Practical Yield Line Design, Reinforced Concrete Council, British Cement Association Publication.
  • [7] Szilard, R. (1974) Theory and Analysis of Plates Classical and Numerical Methods, Prentice Hall Inc.
  • [8] Jones L.L., Wood R.H. (1974) Yield Line Analysis Of Slabs, Thames&Hudson and Chatto&Windus, London.
  • [9] Burgess I. (2017) Yield-line plasticity and tensile membrane action in lightly-reinforced rectangular concrete slabs, Engineering Structures 138, 195-214
  • [10] Denton, S.R (2001) Compatibility requirements for yield-line mechanisms, International Journal of Solids and Structures 38(18), 3099-3109
  • [11] Al Sabah A.S., Falter, H. (2013) Finite element lower bound “yield line” analysis of isotropic slabs using rotation-free elements, Engineering Structures 53, 38-51
  • [12] Jennings A. (1998) On the identification of yield-line collapse mechanisms, Engineering Structures 18(4), 332-337
  • [13] Gonhert M. (2000) Collapse load analysis of yield-line elements, Engineering Structures 22(8), 1048-1054
  • [14] Görkem S.E., Hüsem M. (2013) Load capacity of high-strength reinforced concrete slabs by yield line theory, Computers and Concrete 12(6), 819-829.
  • [15] TS 1247, Beton Yapım Döküm ve Bakım Kuralları (Normal Hava Koşullarında), TSE, Ankara, Mart 1984.
  • [16] Görkem, S.E. (2009) Investigation of Behavior of High Strength Reinforced Concrete Slabs using Yield Line Theory, PhD. Thesis, Graduate School of Natural and Applied Sciences, Karadeniz Technical University, Trabzon, Turkey.
  • [17] Park, R., Gamble, W.L. (1980), Reinforced Concrete Slabs, John Wiley and Sons.