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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 13 Abstracts search results
Document:
SP197
Date:
April 1, 2002
Author(s):
Editors: Shamim A. Sheikh and Oguzhan Bayrak / Sponsored by: Joint ACI-ASCE Committee 352 and ACI Committee 374 and Joint ACI-ASCE Committee 441
Publication:
Symposium Papers
Volume:
197
Abstract:
Papers on behavior and design of concrete structures presented at this symposium include: “Recently Identified Aspects of Ductile Seismic Torsional Response of Reinforced Concrete Buildings,” “Shear Strength of Circular Reinforced Concrete Columns,” “Remembering the Column Analogy, New Seismic Design Provisions in Japan,” “Lessons from Recent Earthquakes in Turkey and Seismic Rehabilitation of Buildings,” “Strengthening Buildings for Earthquake Resistance with New Concrete,” “A Link Between Research and Practice: ACI 352 Recommendations for Design of Joints in RC Structures,” “Design of Confining Reinforcement in Columns for Seismic Performance,” “Aspects of Seismic Evaluation and Retrofit of Canadian Bridges,” and “Prediction of Strength and Shear Distortion.” Note: The individual papers are also available as .pdf downloads.. Please click on the following link to view the papers available, or call 248.848.3800 to order. SP197
DOI:
10.14359/14014
SP197-12
A. C. Heidebrecht and N. Naumoski
This paper describes an investigation into the seismic performance of a six storey moment resisting frame structure located in Vancouver and designed and detailed in accordance with the seismic provisions of the National Building Code of Canada (1995). Both pushover and dynamic analyses are conducted using an inelastic model of the structure as designed and detailed. The structural performance of frames designed with different ductility capacities is evaluated using interstorey drift and member curvature ductility response as performance measures. All frames studied are expected to perform at an operational level when subjected to design level seismic excitations and to meet life safe performance criteria at excitations of twice the design level.
10.14359/11936
SP197-11
J. P. Moehle, K. J. Elwood, and H. Sezen
Earthquake reconnaissance has identified failure of reinforced concrete columnsas a primary cause of collapse of older existing reinforced concrete buildingframes during earthquakes. Apparent column failure, however, does not always result in building collapse. A study of columns tested in the laboratory examinesloss of lateral and vertical load capacities. Correlations with geometric, materials, and loading characteristics are identified.
10.14359/11935
SP197-10
G. J. Parra-Montesinos and J. K. Wight
The behavior of beam-column connections in WC frame structures has been extensively studied since the 1960’s. These studies have served as the basis for design guidelines for WC joints, in which detailing requirements and stress limits are given to control damage and deterioration of strength and stiffness in the connections. However, no particular attention is paid to the deformation in the joint region and its relation to the connection strength. In this paper a model is presented to evaluate the shear strength of WC joints for various levels of joint shear distortion. The joint model is based on the state of plane strains in the connection through the development of a ratio between the joint principal strains, which was determined from experimental results. Based on the joint model, stress limits are proposed for interior and exterior joints for a shear distortion of 1%. These limits are similar to those recommended by ACI-ASCE Committee 352 for exterior connections. However, they are lower than those recommended for interior joints. The detrimental effect of eccentricity on joint strength is also estimated. Further analyses are required to fully quantify the effect of joint type and details on the principal strain ratio, and thus on joint strength.
10.14359/11934
SP197-09
D. Mitchell
The approach for seismic evaluation and guidelines for seismic retrofit in the Canadian Highway Bridge Design code are presented. A number of common seismic deficiencies found in bridge structures are discussed. The reversed cyclic loading behavior of columns with lap splices at their bases, outrigger beam-column connections and columns with hinges at their bases are discussed. Methods suitable for retrofit of a number these deficiencies are described. The responses of these elements after these retrofit strategies had been carried out are also presented.
10.14359/11933
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