Nonlinear Structural Analysis of Fire-exposed Reinforced Concrete Columns
D.V. Reddy
K. Sobhan
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Nonlinear Structural Analysis of Fire-exposed Reinforced Concrete Columns | ||
| Published in: | Innovation and Development for the Americas: Engineering, Education, Research and Development: Proceedings of the 8th Latin American and Caribbean Conference for Engineering and Technology | |
| Date of Conference: | June 1-4, 2010 | |
| Location of Conference: | Arequipa, Peru | |
| Authors: | Liu Lixian D.V. Reddy K. Sobhan | |
| Refereed Paper: | #58 | |
Abstract | ||
| A nonlinear structural analysis is presented for reinforced concrete (RC) columns exposed to fire. The analysis includes two steps: the first step is the calculation of the temperature distribution in concrete members, and the second the determination of the mechanical response due to elevated temperature and applied loading. In the thermal analysis, the effect of moisture is taken into account. The use of the computer program for evaluating the response of a RC column from the initial preloading stage to collapse, due to fire, is illustrated. The validity of the numerical model used in the program is verified by comparing the predictions from the computer program with measured results from full-scale fire resistance tests. The computer program can be used to predict the fire resistance of RC columns for any values of the significant parameters, such as load level, section dimensions, column length, concrete strength, concrete cover, aggregate type and reinforcement ratio. | ||