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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: Beams With Intermediate Expansion Hinges In Rigid-Frame Bridges
Author(s): D. H. Pletta and Leonard C. Hollister
Publication: Journal Proceedings
Appears on pages(s): 149-172
Abstract:Expansion hinges, developed by the California Highway Department, capable of transmitting shear but no thrust or moment, and located at about the quarter point of interior girders on long multiple-span, rigid-frame, concrete bridges are described in detail. It is claimed that they preserve structural continuity and enhance aesthetic possibilities more so than older methods of breaking girders over interior piers. As their incorporation complicates design, charts were developed for the hinged beams so that they could be treated as similar solid beams when analyzing the structure by moment distribution. The charts mate-rially reduce design time.
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