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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: Shrinkage and Creep in Indeterminate Structures
Author(s): Kin Leung Lai and Robert F. Warner
Publication: Special Publication
Appears on pages(s): 305-320
Keywords: computer deflection; girders;
ograms; continuous beams; creep properties;
oad balancing methods; loads (fources); memen
reinforced concrete; t
Abstract:An analytic study was made of the effects of creep andshrinkage in lightly loaded continuous girders and frames by means of computer programs which were developed to simulate the timevarying behavior of a structure under sustained variable loading. Variations in the internal moments with time were found to be very large, a 50 percent increase or decrease in the maximum moment being not unusual. Concrete shrinkage was found to have a much more important effect on long-term moment redistribution than creep. The quantity and distribution of reinforcement also had a critical effect, both on moment redistribution and long-term deflection.
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