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 20 Abstracts search results

Document: 

SP237

Date: 

October 11, 2006

Author(s):

Editors: Laura Lowes and Filip Filippou

Publication:

Symposium Papers

Volume:

237

Abstract:

SP-237CD This CD-ROM is a collection of 19 papers presented at a workshop sponsored by Joint ACI-ASCE Committee 447, Finite Element Analysis of Reinforced Concrete Structures, and JCI Committee 016SP, in Maui, Hawaii, USA, in November 2003. A broad range of topics was addressed, including the creation of new experimental data sets for use in developing, calibrating, and validating models; the development and validation of plain, reinforced, and fiber-reinforced concrete constitutive models; new approaches to simulating the response of reinforced concrete continua; new element formations to enable improved simulation of component response; and new computational techniques.

DOI:

10.14359/18184


Document: 

SP237-13

Date: 

August 1, 2006

Author(s):

T. Tanabe, A. Itoh, and N. Ueda

Publication:

Symposium Papers

Volume:

237

Abstract:

Snapback load-deflection relations of shear failing beams are numerically obtained using Arc Length Method with Selected Displacement Control Points. Identifying stress loading area while load decreases, failure process of snapback shear failure of a beam was clarified. The fundamental understanding of the phenomena is extended to failure concept of a structure through energy balance calculation.

DOI:

10.14359/18254


Document: 

SP237-14

Date: 

August 1, 2006

Author(s):

Y. Kaneko and H. Mihashi

Publication:

Symposium Papers

Volume:

237

Abstract:

The objective of this paper is to study the shear softening characteristics of reinforced concrete deep beams. A mechanical model for the macroscopic shear failure is developed, focusing on the entire load-displacement relationship. The method makes use of the rotating smeared crack model and the truss model, combined into a single simple model. The analysis includes the development of multiple diagonal cracks and macroscopic shear crack propagation. The model is found to provide good agreement with the experiments. The analytical results point out that the shear softening characteristics depends on the size of specimens, the shear-span ratio, the shear reinforcement and the confinement.

DOI:

10.14359/18255


Document: 

SP237-09

Date: 

August 1, 2006

Author(s):

N. Shirai

Publication:

Symposium Papers

Volume:

237

Abstract:

Nonlinear finite element analyses of RC beam-column joint specimens that exhibit shear failure under cyclic lateral loading were conducted to investigate their fracture modes and post-peak behavior. Response mechanisms such as cyclic deterioration and shear resistance were investigated. In performing the analyses, spatial discretization, modeling of bond behavior and the type of loading were considered. The macro-scale model for predicting the joint capacity proposed by Shiohara is reviewed and the validity of his hypotheses are rigorously investigated through comparison of the observed and calculated results.

DOI:

10.14359/18250


Document: 

SP237-10

Date: 

August 1, 2006

Author(s):

H. Noguchi

Publication:

Symposium Papers

Volume:

237

Abstract:

Seismic design provisions for beam-column joints in the AIJ guidelines are based mainly on earlier experimental studies. However, it is necessary to establish a more rational, performance-based design method, especially for joints subjected to two directional seismic forces. This can be accomplished by analytical study of the stress transfer mechanisms in joints. In order to understand the progression of damage in joint concrete, accumulated absorbed strain energy for concrete and reinforcement was calculated from the results of FEM analysis. The stress transfer mechanisms and progression of damage in concrete and reinforcement provide a basis for establishing a more rational, performance-based design method for RC structures.

DOI:

10.14359/18251


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