SEISMIC RESPONSE EVALUATION OF LATTICE SHELL ROOFS SUPPORTED BY MULTISTORY STRUCTURES

Abstract

Seismic responses of raised lattice roofs are known to be different from those of multistory structures, which include vertical response even against horizontal input, and their amplitudes are affected by the stiffness of supporting structures. Especially when the own period of the roof meets that of substructures, the response of the roof is known to be significantly amplified. In this paper, seismic response of latticed arches, cylindrical shells, and domes on multistory structures are studied including their amplification factors, followed by proposing simple evaluation method which is consistent with contemporary design method of multistory buildings.