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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 9 Abstracts search results
Document:
SP110-07
Date:
November 1, 1988
Author(s):
Jack Christiansen
Publication:
Symposium Papers
Volume:
110
Abstract:
The performance of hyperbolic paraboloid concrete shell structures with respect to function, strength, serviceability, and economy is discussed. Cost estimates are presented for three example roof structures.
DOI:
10.14359/3612
SP110
Editor: Jack Christiansen
SP110 Offering both utility and beauty, the hyperbolic paraboloid (HP) shell came to the attention of American designers in the early 1950's. Since that time, many hyperbolic paraboloid structures have been built both in the United States and around the world. This state-of-the-art report on hyperbolic paraboloids is the culmination of over ten years of research and fact gathering. Effort has been devoted to developing analysis and design data and techniques for hyperbolic paraboloid concrete shells, especially for umbrella, gable and saddle shells. "Hyperbolic Paraboloid Shells" offers the latest information on topics such as: bending theory, saddle shells, hyperbolic paraboloid performance and cost, groined vaults, membrane analysis and construction.
10.14359/14143
SP110-08
Milo S. Ketchum
Construction of hyperbolic paraboloidal concrete shell roof structures is discussed, including the phases for selection, economy, forms, reinforcing, concrete materials, placing, and curing. Umbrella shells have the greatest potential for economy for large commercial or industrial construction. Gabled shells and saddle shells are suited to long span monumental buildings. Shells require high standards of concrete construction and the close cooperation of the architect, the engineer, and the contractor.
10.14359/3420
SP110-02
A;lex C. Scordelis
A review of the state of the art for the membrane analysis of hyperbolic parabolic (HP) shells is presented. Membrane solutions using simple statics are given for HP shells having square, rectangular, or parallelogram shapes in plan and subjected only to uniform vertical loading over the horizontal projection of the shell. Statics of shell-edge beam systems are discussed for saddle shells, inverted umbrellas, gable shells, and shells on two supports. Membrane stresses for general loadings on parallelogram-shaped HP shells obtained using a differential equation approach are described. Stress transformation formulas are given that can be used to find principal membrane stresses in the shell and boundary stresses to be transmitted to the edge members. Membrane stresses in HP shells having an arbitrary quadrilateral shape are discussed and procedures for determining them are discussed.
10.14359/2798
SP110-03
W. C. Schnobrich
The equations for a bending theory of shallow shells are specialized to the case of the hyperbolic paraboloid shell. The nature of the analytic solutions to these equations that have been achieved for this class of shells is described. Such analytical solutions involve boundary conditions that depart significantly from those present in real shell applications. Types of numerical approximate solutions present as alternatives are noted and the details of one of these, the finite element method, are described. The importance of the dead weight of perimeter or support beams is noted, demanding a bending solution with real support conditions. Some representative solutions are included as examples.
10.14359/2808
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