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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Serviceability Criteria in Prestressed Concrete Bridges
Author(s): Andrzej S. Nowak and Hid N. Grouni
Publication: Journal Proceedings
Appears on pages(s): 43-49
Keywords: bridges (structures); cracking (fracturing); deflection; fatigue (materials); girder bridges; limit state design; live loads; loads (forces); prestressed concrete; serviceability.
Abstract:Serviceability limit states such as cracking, fatigue, deflection, or vibration often govern bridge design. Therefore, it is important to develop rational design criteria. As the main concern is accumulation of damage caused by repeated applications of heavy loads (trucks), the proposed approach is therefore based on both the load magnitude and frequency of occurrence rather than just load magnitude as with ultimate limit states. In prestressed concrete girder bridges the live load spectra per girder vary according to the girder location. The cumulative distribution functions of live load per girder are developed, and the design criteria for cracking, fatigue, and vibrations/deflections are derived as upper limits on the frequency of the load occurrence.
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