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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 14 Abstracts search results
Document:
SP296-13
Date:
March 6, 2014
Author(s):
Damon R. Fick, Mete A. Sozen, and Michael E. Kreger
Publication:
Symposium Papers
Volume:
296
Abstract:
The overall earthquake response of flat-plate structures depends on the hysteretic properties of the slab-column connection. The current understanding of the behavior is based largely on the tests of small-scale isolated slab-column assemblies. The results obtained contain a wide range of maximum drift ratios and failure modes that create uncertainty in evaluating the behavior of flat plate structures during strong ground motion. To evaluate the contributions of multiple stories and connections, a full-scale, three-story reinforced concrete flat plate structure was built and subjected to lateral-load reversals of increasing magnitude. Results of the experimental program show (a) the punching-shear failure of a single slab-column connection was preceded by observable damage in other connections, (b) a lower-bound estimate to the contribution of the slabs to the base shear strength of the three-story flat-plate structure can be obtained by limiting the contribution of the slab to the flexural strength of the column strip, and (c) a simplified model incorporating the observed crack pattern can be used to estimate lateral response at low drift levels.
DOI:
10.14359/51686886
SP296-11
Shunsuke Sugano
The main objective of this paper is to discuss the validity of seismic rehabilitation of concrete buildings in Japan based on the review of the behavior of seismically rehabilitated buildings during recent earthquakes. First, the state of seismic rehabilitation of concrete buildings is introduced. It is described that the seismic rehabilitation has been strongly promoted since 1) the enactment of the Law for Promotion of Seismic Rehabilitation of Existing Buildings in 1995 and 2) the declaration of the ten-year promotion plan of seismic rehabilitation as the government policy in 2005. Second, the behavior of rehabilitated buildings during recent earthquakes is introduced. It is described that 1) there were some insufficiencies in the early practice of seismic rehabilitation due to the lack of available guidelines, 2) the case of a rehabilitated building in Kobe that survived the 1995 Kobe Earthquake without any damage verified the validity of seismic rehabilitation, and 3) extensive nonstructural damage may result in the loss of building function, therefore, the target performance of “functional” may not be satisfied even if the performance of “life safety” is satisfied. Third, the behavior of un-rehabilitated local government buildings during the 2011 Great East Japan Earthquake is introduced. It is described that 1) extensive nonstructural damage may lead to shut down of the building even if structural damage is minor, 2) vulnerable essential buildings should be rehabilitated to satisfy the performance of “functional” as well as the performance of “life safety” and 3) essential building should be rehabilitated with highest priority.
10.14359/51686884
SP296
Sponsored by ACI technical committees 352, 369, 374, 408 and 445
Editors: José A. Pincheira and Sergio M. Alcocer Sponsored by ACI technical committees 352, 369, 374, 408 and 445 This CD consists of 13 papers that were presented at a technical session sponsored by ACI technical committees 352, 369, 374, 408 and 445 at the ACI Spring 2012 ACI Convention in Dallas, Texas. The papers include using anchorage or strut-and tie models, strengthening concrete buildings for seismic performance, seismic rehabilitation, and much more. Note: The individual papers are also available. Please click on the following link to view the papers available, or call 248.848.3800 to order. SP-296
Editors: José A. Pincheira and Sergio M. Alcocer
This CD consists of 13 papers that were presented at a technical session sponsored by ACI technical committees 352, 369, 374, 408 and 445 at the ACI Spring 2012 ACI Convention in Dallas, Texas. The papers include using anchorage or strut-and tie models, strengthening concrete buildings for seismic performance, seismic rehabilitation, and much more.
Note: The individual papers are also available. Please click on the following link to view the papers available, or call 248.848.3800 to order. SP-296
10.14359/51686887
SP296-08
Loring A. Wyllie, Jr.
This paper describes a Collaborative Research project extending from 1982 to the mid 1990s between The University of Texas at Austin and Degenkolb Engineers on methods to strengthen existing concrete buildings for improved seismic performance. James Jirsa and the author were Principal Investigators for this series of national Science Foundation projects. The paper describes the collaborative process and summarizes some of the results of these research projects.
10.14359/51686881
SP296-09
Ugur Ersoy, Tugrul Tankut, Ahmet Turer and Guney Ozcebe
This paper reports the structural rehabilitation of a 28 story reinforced concrete building. Structural assessment of this building was initiated upon observing damage in one column after five years of service. As a result of this investigation it was concluded that the main cause of damage in the column was temperature induced deformations. A total of 36 circular (spiral) and 46 square (tied) columns were strengthened by steel jacketing. After the completion of rehabilitation, 122 sensors were placed in the building at different locations to monitor the temperature changes and deformations in structural members. In the paper results of seven years of monitoring are also given.
10.14359/51686882
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