In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
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.
American Concrete Institute
38800 Country Club Dr.
Farmington Hills, MI
Feedback via Email
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: Torsion in Prestressed Curved Bridges
Author(s): A. Ghali
Publication: Special Publication
Appears on pages(s): 815-834
Keywords: bridges (structures); computer programs; curved beams;
post-tensioning; prestressed concrete; statically indeterminate
structures; structural analysis; torsion
Abstract:Prestressing by post-tensioned tendons with parabolic profiles can be arranged in a curved bridge such that the bend-ing moments are negligibly small due to the combined effect of dead load and prestressing. However, this can result in high torsional moments for which the bridge has to be designed. The reasons and the analysis for the high torsional moments are discussed. A curved continuous bridge with two spans and three possible support conditions is analyzed numerically to get an indication about the magnitude of the torsional moments. Reference is made to an available computer program which can be conveniently used in the analysis of any framed structure. The computer program can handle curved members with varying cross section and externally applied loads as well as prestressing loads.
Click here to become an online Journal subscriber