A STUDY OF STORY SHEAR FORCE FACTOR OF THE SMALL STRUCTURE ON THE ELEVATED BRIDGE

Abstract

A small waiting room, shop, etc. have been installed on the elevated bridge, for railway customer. However, the design method of a small structure on the elevated bridge is not clear. In this paper, we estimate of seismic design force of the small structure on the elevated bridge, based on the response analysis and SRSS. And, we propose modified Ai based on the results of previous research and the results of the study were to 1/3 the weight ratio used in Ai. By using modified Ai, the seismic load is estimated at safe side.
And, We estimated the value of the expression and the proposed shear coefficient (C₀ = 0.5). As a result, the shear coefficient (C₀ = 0.5) is actually to design, it can be easily computed on the safe side.