Strength and stiffness of uniaxially tensioned reinforced concrete panels subjected to membrane shear
This report addresses four major topics in the general area of cracking and shear effects in concrete containment structures: (a) extensional stiffness of orthogonally reinforced flat concrete specimens subjected to tension in one direction only, (b) shear strength and shear stiffness of these same specimens when subjected to combined uniaxial tension and shear, (c) development of a preliminary analytical model for the prediction of the initial shear modulus and its degradation with increasing uniaxial tension levels, and (d) a comparative correlation of experimental results with results from earlier studies on similar specimens and on other types of shear specimens tested in many different laboratories. Eleven specimens with two-way orthogonal reinforcement were tested. Test parameters included the applied tension level (0, 0.3f/sub y/, 0.6f/sub y/, and 0.9f/sub y/), type of shear loading (monotonic and reversed cyclic), and level of applied shear stress. Prior to application of shear loading, measurements of extensional stiffness were conducted at reinforcing tension levels up to 0.6f/sub y/, and empirical expressions for crack width and extensional stiffness were derived. Stiffness degradation produced by subsequent shear loadings was also assessed.
- Research Organization:
- Cornell Univ., Ithaca, NY (USA). Dept. of Structural Engineering
- OSTI ID:
- 5237120
- Report Number(s):
- NUREG/CR-2788; ON: DE82905759
- Country of Publication:
- United States
- Language:
- English
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