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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: Saddle Shells
Author(s): Alex C. Scordelis and Mark A. Ketchum
Publication: Special Publication
Appears on pages(s): 65-88
Keywords: edge beams; hyperbolic parabolic shells; loads (forces); reviews; reinforced concrete; shells (structural forms); structural analysis; structural design; Structural Research
Abstract:A review of the state of the art for the analysis and design of HP saddle shells is presented. Design considerations and basic load carrying mechanisms are discussed. Results of a detailed parameter study are presented for loadings on a saddle shell with tips free. These were carried out with a linear finite element analysis computer program that includes membrane and bending action in the shell and edge beams. Results are given and compared for shell membrane stresses and bending moments, edge beam stress resultants, and vertical displacements for the following parameters: 1) loading-shell DL + LL, edge beam DL, and shell and edge beam loads; 2) deep shell and shallow shell; and 3) uniform edge beam cross-section and tapered edge beam cross section. Additional brief discussions are given on the following effects: 1) rise-span ratio; 2) type of vertical supporting system; 3) edge beam eccentricity; 4) horizontal thrust supporting system; 5) prestressing; and 6) inelastic behavior and ultimate strength.
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