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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 45 Abstracts search results
Document:
SP26-28
Date:
January 1, 1971
Author(s):
F. Sawko and B.K. Willcock
Publication:
Symposium Papers
Volume:
26
Abstract:
Design of statically indeterminate multi-span bridges presents considerable difficulties. Computer programs now are used to carry out the elastic analysis of a statically indeterminate structure. . .The program is fully automatic, i.e., the program optimizes the geometry.
DOI:
10.14359/17997
SP26-08
Yau-Kai Cheung
Right orthotropic bridges are analyzed by the Finite Strip Method. In this method harmonic functions which fitted the simply supported end conditions in one direction are used in conjunction with polynomials for the other direction, and as a result a simple beam-type stiffness matrix for a strip can be derived. Such an approach has been shown to be much more accurate and versatile than the Guyon and Massonnet methods of equivalent slabs.
10.14359/17977
SP26-31
David G. Volkert and Lewis Levine
The Second Lake Pontchartrain Bridge, a trestle-type strucrures 24-miles long, consists of precast prestressed concrete deck units, precast concrete pile caps, and precast prestressed cylinder piles. . .This paper presents a study of the two bridges to indicate the improvements in the art and science of prestressed concrete design; the progress in concrete technology; the advance in mass production techniques for fabrication and construction of bridge piers and spans composed of multiple identical units; changes in construction procedures; and the advances in traffic safety during these intervening twelve years.
10.14359/18000
SP26-39
Nils-Ove Gronqvist
The present series of tests comprises about 100 tests specimens all of which had formerly been subjected to pulsating loads. The investigation is a direct continuation of the tests in (1) as the material left over from these tests was used in the present ones. The factors studied in (1) have become parameters also in this investigation together with those factors which are measured in normal static tests, i.e. yield point, breaking point and elongation. These measuring results have been compared with the static strength values of the reinforcing bar when unaffected by earlier load applications.
10.14359/18008
SP26-21
John M. Hanson and C.L. Hulsbos
Nine ultimate strength tests on four 36-in. (91-cm) deep prestressed concrete I and box beams are reported.
10.14359/17990
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