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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 23 Abstracts search results

Document: 

SP157-02

Date: 

October 1, 1995

Author(s):

H. Aoyama

Publication:

Symposium Papers

Volume:

157

Abstract:

Summarized in this paper are the background state of the art in reinforced concrete beam-column joint design leading to the U. S.-N. Z.-Japan trilateral cooperative research, outline of the trilateral research, and its conclusions affecting the design practice in each country. Particular emphasis is placed on the transition of structural engineering research from empirical approach to rational approach which became apparent in the course of trilateral research and discussion.

DOI:

10.14359/979

Document: 

SP157-03

Date: 

October 1, 1995

Author(s):

J. O. Jirsa

Publication:

Symposium Papers

Volume:

157

Abstract:

Problems associated with design of beam-column joints for shear have been studied extensively in many countries. Work in New Zealand on the performance of joints in reinforced concrete moment resisting frames in seismic zones served to alert designers all over the world to consider these problems. Fundamental studies conducted by Paulay and his colleagues and students contributed immeasurably to our understanding of the behavior of joints. However, the approaches used in design codes have not always been the same as those used in New Zealand. The reasons for these differences have much to do with design philosophies, research objectives, and code development procedures. Shear problems at locations other than joints and in elements where rehabilitation (repair and strengthening) is needed to improve performance of structures under earthquake generated deformations still lack definition sufficient for developing code provisions.

DOI:

10.14359/980

Document: 

SP157-13

Date: 

October 1, 1995

Author(s):

S. Otani

Publication:

Symposium Papers

Volume:

157

Abstract:

Briefly introduces an ultimate strength design method for reinforced concrete buildings on the basis of the capacity design concept. A design guideline was developed in Japan as a part of the U. S.-Japan PRESSS (Precast Seismic Structural System) project. The design for earthquake loading is specified for the serviceability limit state and ultimate limit state. This paper introduces the concept of earthquake-resistant design for the ultimate limit state using a nonlinear static analysis under monotonically increasing force.

DOI:

10.14359/1007

Document: 

SP157-14

Date: 

October 1, 1995

Author(s):

S. M. Uzumeri

Publication:

Symposium Papers

Volume:

157

Abstract:

Summarizes the developments and changes to the seismic design provisions of the National Building Code of Canada (NBCC 1990) since its 1977 edition and discusses the changes to the seismic design provisions of the Canadian Standards Association Standard, Design of Concrete Structures for Buildings (CAN3-A23.3). The paper outlines the philosophy of seismic-resistant design of the Canadian code and discusses the changes to the zoning maps, static design procedures, and the introduction of the force modification factors. The paper also deals with the changes to the Canadian reinforced concrete code and especially with the section on ductile walls, changes to load combination factors, and the explicit links between the concrete code sections containing the detailing requirements and the NBCC sections on determination of the design seismic forces.

DOI:

10.14359/1008

Document: 

SP157-16

Date: 

October 1, 1995

Author(s):

M. P. Collins

Publication:

Symposium Papers

Volume:

157

Abstract:

Describes the essential features of the "modified compression field theory." A group of behavioral models based on these assumptions is presented. The use of these models is illustrated and reference is made to experimental data and to existing design codes. A simple, unified design method for shear that is able to approach both routine and unusual design problems is presented. The method is applicable to both prestressed and nonprestressed concrete members. It treats members subjected to either axial tension or axial

DOI:

10.14359/1009

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