Development of load and resistance factors for reinforced concrete structures in Turkey

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Date

2007

Author

Fırat, Fatih Kürşat

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In this dissertation, a study is conducted to develop a probability based load and resistance factor design criterion for structural members considering the local conditions of Turkey. The Advanced First Order Second Moment (AFOSM) procedure is utilized as the probabilistic method of analysis. Various sources of uncertainties associated with concrete compressive strength, yielding and ultimate strength of reinforcing steel bars and the dimensions of beams, columns and shear walls are analyzed and quantified. The resistance statistics for different failure modes of different types of reinforced concrete structural members are computed by using the resistance parameters within the framework of reliability analysis. Structural load effects of dead, live, wind, snow and earthquake loads are analyzed considering the uncertainties in these loads. For different load combinations, the safety levels corresponding to the current design practice are evaluated in terms of the reliability indexes for reinforced concrete beam, column and shear wall design in flexure and shear, and also column design in combined action of flexure and axial load. Depending on this evaluation and the reliability index values reported from other countries, target reliability indexes are selected for different load combinations and different failure modes of structural members. Finally, a new set of load and resistance factors corresponding to selected target reliabilities and levels of uncertainties are proposed for each different failure modes of the structural members considered in this study, separately.

Subject Keywords

Structural engineering.

URI

http://etd.lib.metu.edu.tr/upload/12608888/index.pdf
https://hdl.handle.net/11511/17287

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Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

F. K. Fırat, “Development of load and resistance factors for reinforced concrete structures in Turkey,” Ph.D. - Doctoral Program, Middle East Technical University, 2007.