Mitigation of Seismic Hazards in Existing Unreinforced Masonry Wall Buildings:Performance of Undesigned and Modified Elements. Evaluation of Modification Methods.

摘要

The primary objective of this investigation was to ascertain if mitigation of seismic hazards posed by existing structures using unreinforced masonry walls can be accomplished by simple methodology. Sub-topics of this investigation are:Performance of the undesigned elements that participate in structural response;Evaluation of current modification methods applied to these undesigned elements. Interviews with technical personnel and a survey of existing masonry buildings was made in representative areas in the United States that may be subjected to ground motion varying from moderate to severe. This survey indicates commonality of building construction methods,range of building dimension and use of masonry materials.