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Title: Development of Probability-Based LRFD Formats for Reinforced Concrete Structures

Author(s): S. H. Kim, K. W. Bae, H. S. Park, and H. K. Cho

Publication: Symposium Paper

Volume: 128


Appears on pages(s): 1099-1116

Keywords: limit state design; live loads; office buildings; reliability; probability theory; reinforced concrete; static loads; structural analysis; safety; structural design; wind pressure; Design

Date: 11/1/1991

The ultimate goal in structural design is to insure that the structure performs a set of predefined functions satisfactorily over its design life and, if possible, at a minimum life cycle cost that includes the initial construction cost. Because of the inherent random nature of most manmade and environmental loadings and strength of materials, as well as the imperfect structural analysis, the reliability-based structural design has been recognized as a rational approach to the design problem. Based on the recent developments of the reliability-based structural analysis and design the probability-based design criteria have been successfully developed for many standards. The primary objective of the study is to establish a methodology for reliability-based structural analysis and design, which is consequently utilized to develop the probability-based design criteria for reinforced concrete structures in Korea. The procedure includes studies on the probabilistic characteristics of loadings (such as dead, live, and wind loads) as well as resistances of reinforced concrete members. The safety level implied in the current practice is to be evaluated using the probabilistic models of random phenomena. Based on the results, the rational factors of loads and resistances are derived in limit state design concept.


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