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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 23 Abstracts search results
Document:
SP157
Date:
October 1, 1995
Author(s):
Editors: Nigel Priestly, Michael P. Collins, and Frieder Seible
Publication:
Symposium Papers
Volume:
157
Abstract:
A total of 21 technical papers comprise this Special Publication which covers recent developments in lateral force transfer in buildings. 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. SP157
DOI:
10.14359/14197
SP157-21
D. C. Hopkins
The M7.8 earthquake which hit the Philippines in July 1990 caused extensive and varied damage to a wide range of structures, most of which were of reinforced concrete. Because U. S. codes are adopted in the Philippines, the event provides a unique opportunity for earthquake engineers worldwide to review their approaches to seismic design. This paper results from the author's involvement in a visit immediately after the event and his subsequent role, in 1991 and 1992, advising the Philippine government on reconstruction of damaged public buildings and infrastructure. Valuable insights into the real issues were gained through contact local consultants, government engineers, and government agencies, such as the Departments of Health and Education. The government's Earthquake Reconstruction Project is outlined and the effects of the earthquake briefly described as an introduction to the main issues: structural concepts, ductile detailing, construction practice and supervision, influence of "nonstructural" elements, and the value of site investigations. Examples are given to illustrate these issues in the Philippine context. The author concludes that proper attention to the basics is sufficient to significantly reduce earthquake risk, not only in the Philippines, but in many developing and other countries. In this International Decade for Natural Disaster Reduction, this has special relevance.
10.14359/1043
SP157-01
R. Park
Gives an outline of the many significant and pioneering contributions made by Emeritus Professor Tom Paulay to the understanding of the behavior of reinforced concrete and to the design of reinforced concrete structures for earthquake resistance. Particularly innovative has been his research into the design of structural walls for earthquake resistance, including the concept of the use of diagonal reinforcement in coupling beams. Other internationally recognized research described include his outstanding investigations into the mechanisms of shear resistance of reinforced concrete, aggregate interlock across cracks, behavior of beam-column joints, and the capacity design and detailing procedures for structural walls and frames.
10.14359/1042
SP157-10
A. J. O'Leary
Describes design and construction aspects of precast concrete moment resisting frames for the lateral load resistance of multistory buildings. Discussion will concentrate on the particular aspects of the framing system of a 13-story building constructed in Wellington, New Zealand. The building is octagonal in plan with a perimeter lateral load-resisting frame consisting of two-story high precast reinforced concrete elements. Each element includes a column plus two levels of beam stubs. In-situ concrete midspan beam splices and grouted steel sleeve column reinforcing bar splices form the joints between individual units. The paper also briefly presents other similar precast systems used for multistory buildings. A review of laboratory testing recently completed is given which confirms the good structural performance of the framing systems described.
10.14359/1016
SP157-19
P. Gergley
Earthquake-resistant design of reinforced concrete structures has special problems in moderate seismic zones if the possibility of a very large rare earthquake exists. This is the situation in central and eastern North America. The questions and difficulties associated with introducing a seismic design code for the first time are discussed. The seismic risk to a populated region is not reduced much for many years after the code takes effect; only the rehabilitation of existing structures will reduce the risk significantly in a meaningful time frame. The overall behavior of buildings, especially of existing older reinforced concrete buildings, is often nearly elasto-plastic in nature because a mechanism forms soon after the formation of the first hinge and there is little or no overstrength. This may not be an optimum design in most cases. The response of reinforced concrete buildings to moderate ground motions designed only for gravity loads is better than expected, with moderate drifts and no premature brittle failures in most building types. That is not the case for the rare catastrophic earthquake.
10.14359/1010
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