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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.
Showing 1-5 of 21 Abstracts search results
Document:
SP59-16
Date:
January 1, 1979
Author(s):
Fritz Leonhardt
Publication:
Symposium Papers
Volume:
59
Abstract:
Experience and some damages in the last 30 years teach that full prestressing is often not the best solution for prestressed concrete structures. Better service performance can be obtained with partial prestressing. Serviceability criteria are proposed to meet performance requirements. Cracks with limited crack width are harmless, but crack width control must be improved and this can be done by partial prestressing. Rules are given for a reasonable choice of the degree of prestressing.
DOI:
10.14359/17777
SP59-15
T.Y. Lin
Historical development of reinforced, prestressed and partially prestressed concrete is reviewed. Methods and codes for design are discussed, with emphasis on strength and behavior requirements. The use of non-prestressed reinforcement for flexural members, members under combined shear and flexure, combined axial load and flexure are discussed, together with suggested approaches to their design and analysis.
10.14359/17776
SP59-09
Paul Regan
A comparision of ACI and CEB approaches to shear and torsion recommendations is presented. The author discusses the application of safety factors; shear resistance of members without shear reinforcement; reinforced concrete members with shear reinforcement; the effect of shear cracking on forces in the main reinforcement; shear resistance of concrete in short shear spans; prestressed concrete; equilibrium and compatiability torsion; designing reinforcement for torsion; and designing for combined loadings
10.14359/17770
SP59-08
Alan H. Mattock
The provisions of ACI 318-71 concerned with the design of reinforced concrete members for torsion are discussed. The background to these provisions is also discussed, in particular concerning interaction effects between torsion, shear and flexure. The paper concludes with a summary of the steps involved in the design of a reinforced concrete member to carry a significatn torsional moment in addition to shear and flexure, when using the 1971 edition of the ACI Building Code.
10.14359/17769
SP59-07
Burno Thurlimann
Besides a "Standard Method" derived from semi-empirical considerations for the new CEB model code proposes a "Refined Method" for the design of reinforced and prestressed conrete members subjected to torsion. It is compatible with the design method for bending and shear and combined cases of bending, shear and torsion.
10.14359/17768
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