Infills in Seismic Resistant Building

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Abstract
This paper summarizes studies in which the effects of masonry and lightweight concrete infills on R/C moment existing frame buildings were studied experimentally and analytically. The experimental investigation consisted of a series of quasi‐static cyclic and monotonic load tests on 1/3‐scale models of the lower 3‐1/2 stories of an 11 story‐three bay reinforced concrete frame infilled in the outer two bays. Different panel material and reinforcement combinations were tested. For reasons of economy, ease of construction, favorable mechanical properties, and efficiency of different types of masonry infill, it was concluded that the most promising panel configuration consisted of solid brick laid in mortar reinforced with two mats of welded wire fabric, one bonded to each side of the wall in a layer of cement stucco (mortar). The implications of these experimentally obtained results are analyzed by investigating how the infills affect the dynamic response of R/C moment resisting frame buildings, as well as c...

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