Comparison of Seismic Damage Design Criteria of Space Frame Roofs Supported by RC Substructures

Abstract

In steel roof gymnasiums with RC substructures, space frame roof members are damaged by out-of-plane response of Cantilevered RC walls and vertical response of roof. In this paper, numerical analysis models are constructed for two gymnasiums that have suffered damage such as buckling, post-buckling fracture and fallings of truss members in the 2016 Kumamoto earthquake. For the roofs, bearings, and RC substructures, various design methods such as the old design method, the current design method, and the design method using the guidelines are applied. The seismic response of each model is analyzed by time history response analysis, and the damage of the truss members is evaluated.