A New Approach to the Ultimate Strength of Concrete in Pure Torsion.
| Autor: | NAVARATNARAJAH, V. |
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| Zdroj: | Journal of the American Concrete Institute; Feb1968, Vol. 65 Issue 2, p121-129, 9p |
| Abstrakt: | The failure of concrete beams In pure torsion is shown to be Initiated by microcracklng in the concrete. On this basis an ultimate strength approach is developed for circular and rectangular beams. The ultimate strength of rectangular plain concrete beams is based on the sand heap analogy of plastic torsion with stress levels varying from the stress at microcracking to the ultimate tensile strength of concrete. The strength of reinforced beams is shown to be the sum of the strength of plain concrete and the contribution of the reinforcement. The contribution of the reinforcement towards the ultimate strength is shown to be dependent on the actual stress levels in them at failure. [ABSTRACT FROM AUTHOR] |
| Databáze: | Complementary Index |
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