ABOUT THE 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.

International Concrete Abstracts Portal

Showing 1-5 of 45 Abstracts search results

Document: 

SP26-23

Date: 

January 1, 1971

Author(s):

V. Ramakrishnan

Publication:

Symposium Papers

Volume:

26

Abstract:

A state-of-the-art survey on the design of concrete bridge structures by the working stress method is presented.

DOI:

10.14359/17992


Document: 

SP26-22

Date: 

January 1, 1971

Author(s):

V. Ramakrishnan, S. Rajasekaran, and R. Krishnamorrthy

Publication:

Symposium Papers

Volume:

26

Abstract:

The paper extends the application of A.L.L. Baker's ultimate load theory to the design of non-prismatic continuous girder and rigid frame bridges subjected to rolling loads. It deals mainly with two new aspects: (1) determination of influence lines for the rotation of 'plastic hinges' and (2) calculation of influence coeficients for non-prismatic members.

DOI:

10.14359/17991


Document: 

SP26

Date: 

January 1, 1971

Author(s):

Editor: Shu-t'ien Li

Publication:

Symposium Papers

Volume:

26

Abstract:

SP26 New methods of design, fabrication and erection, construction, unconventional methods of aggregate grading, innovative cementing materials, and exciting treatment of concrete. Are being rapidly evolved. This volume is aimed at disseminating the new methods and techniques compiled in this massive work to bridge engineers throughout the world.

DOI:

10.14359/14079


Document: 

SP26-31

Date: 

January 1, 1971

Author(s):

David G. Volkert and Lewis Levine

Publication:

Symposium Papers

Volume:

26

Abstract:

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.

DOI:

10.14359/18000


Document: 

SP26-33

Date: 

January 1, 1971

Author(s):

Carl Berwanger

Publication:

Symposium Papers

Volume:

26

Abstract:

This paper presents the analysis of the strains measured during the lowering of the bridge superstructure, when the prestressing of the bridge occurred. The calculated strains were based on the normal assumptions of composite behavior of the steel girder and the reinforced concrete slab.

DOI:

10.14359/18002


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