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International Concrete Abstracts Portal

Showing 1-5 of 13 Abstracts search results

Document: 

SP147-08

Date: 

September 1, 1994

Author(s):

R. Meli

Publication:

Symposium Papers

Volume:

147

Abstract:

Confined masonry walls constitute the basic vertical structural system for residential buildings up to five stories high in Mexico. The practice of their design and construction, their performance during recent earthquakes, and the changes in code regulations and in design and construction practice imposed by the lessons learned from the 1985 earthquake are discussed briefly. Also summarized is the experimental research that constitutes the basis for present design regulations. The comprehensive research program carried out since the late 1960s includes tests on units and mortars, small masonry subassemblages, full-scale walls, and complete structural systems.

DOI:

10.14359/4368


Document: 

SP147-04

Date: 

September 1, 1994

Author(s):

A. E. Schultz

Publication:

Symposium Papers

Volume:

147

Abstract:

A brief overview of the performance of masonry structures subjected to extreme lateral loading events, including earthquakes, hurricanes, tornadoes, and blasts is presented. The overview includes a phenomenological description of the resistance mechanisms of masonry structural systems, as well as common failure modes and their underlying causes. Observations made in 10 North, Central, and South American countries are summarized, along with pertinent discussion that compares and contrasts the various experiences. Coverage includes reinforced masonry, confined masonry, unreinforced masonry (load-bearing walls and infill panels), adobe and other nonengineered, handmade masonry.

DOI:

10.14359/4351


Document: 

SP147-10

Date: 

September 1, 1994

Author(s):

L. E. Garcia and L. E. Yamin

Publication:

Symposium Papers

Volume:

147

Abstract:

A review of the use of masonry in Columbia is presented. The importance of masonry construction is emphasized. The masonry structural systems prevalent in the country are discussed. A description of the materials employed in masonry construction in Columbia is given, including physical and mechanical properties. Reinforced masonry, confined masonry, unreinforced masonry, and nonstructural uses of masonry are discussed. Recent damaging Columbian earthquakes are presented. The behavior of masonry structures during these earthquakes, as well as their influence on the requirements of the Columbian Building Code, are given. The empirical design permitted by the code is indicated. Construction and inspection practice are briefly outlined. The procedures for evaluating and strengthening masonry structures are addressed. Past and current research on masonry is highlighted.

DOI:

10.14359/4388


Document: 

SP147-05

Date: 

September 1, 1994

Author(s):

S. M. Alcocer and R. E. Klingner

Publication:

Symposium Papers

Volume:

147

Abstract:

An overview of different aspects of masonry research in the Americas is presented from the viewpoint of the response of masonry to extreme lateral forces such as earthquakes of strong winds. Research objectives, variables studied, and important findings are described. Due to the large number of investigations, the presentation is not intended to be exhaustive, and only the most relevant references are selected. With respect to the behavior of unreinforced and confined masonry, Latin American research is emphasized. With respect to the behavior of reinforced masonry, the U.S. TCCMAR program is emphasized. This chapter is organized into the following sections: material properties; unreinforced masonry; confined masonry; reinforced masonry; and masonry infills. To facilitate the transfer of research findings into design practice, design and construction details from several research projects conducted in different countries are described. Finally, needed research is discussed from an overall viewpoint.

DOI:

10.14359/4384


Document: 

SP147-03

Date: 

September 1, 1994

Author(s):

J. Bariola

Publication:

Symposium Papers

Volume:

147

Abstract:

Describes the design practice of masonry structures in the Americas. Emphasis of this study is on discussion of regulations for seismic resistance and design of masonry structures. Throughout the continent, unreinforced, reinforced, and confined masonry structures are used. Design practices evidence similarities in the methods used for the proportioning of reinforced and confined masonry in different countries. From the point of view of seismic design, different approaches are used, which lead to different strength and stiffness requirements.

DOI:

10.14359/4367


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