Seismic response and fragility analyses of multi-story glued laminated timber frame-shear wall structures
This paper presents a study on the relationship between material-structure and seismic performance for glued laminated timber frame-shear wall structures.Six six-story prototype glued laminated timber frame-shear wall structures were designed with different construction types of CLT shear walls.The finite element models of the prototype structures were established in OpenSees.Modal analyses and incremental dynamic analyses were conducted.The fundamental periods,base shear,maximum inter-story drifts,and peak floor accelerations of these prototype structures were obtained and compared.The fragility of the connections within CLT shear walls and glulam frames was also evaluated.The results show that,compared to frame-shear wall structures with platform-type CLT shear walls,those with balloon-type CLT shear walls have smaller inter-story drifts,while their acceleration-sensitive nonstructural components and CLT connections are more prone to damage.For the connections in balloon-type CLT shear walls,the probabilities of exceeding severe damage and collapse exceed 70％and 40％,respectively,during eight-degree strong earthquakes.The connection damage of glulam frames remained low during seismic events.Their probabilities of exceeding minor damage were lower than 25％during eight-degree strong earthquakes.
国家科技期刊平台
NSTL
万方数据
