Author(s)

W. Bradford Cross & N.P. Jones

Abstract

A finite element model for wood diaphragm and wall interaction in unreinforced brick buildings W. Bradford Cross," N.P. Jones& & Department of Civil Engineering, Southern Illinois University at Edwardsville, Edwardsville, ^ Department of Civil Engineering, The Johns Hopkins University, Baltimore, Maryland 21218, ABSTRACT This paper outlines results from a research effort which addressed a major issue: wood diaphragm and wall interaction in brick buildings. The work focused on the development of a finite element technique for modeling the dynamic friction and impact characteristics of a wood joist bearing on a brick wall. Results of the analysis of a typical historic brick building in California that was instrumented during the Loma Prieta Earthquake of 1989 will be presented as a benchmark for the technique. INTRODUCTION Typically, joists bearing on masonry walls are modeled as frictionless rollers in an equivalent static analysis. Since this model rarely satisfies conditions

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