Abstract

This paper examines CLT-Steel hybrid wall at six, and ten storey heights to increase seismic force resistance compared to a conventional wooden wall. The ultra-strong shear walls that is proposed in this paper called Robust Framing CLT panel shear walls (FPSW), which is based on robust articulated frame (of steel) braced with CLT boards panels and steel tendons. Timber structures are well-known for their ecological benefits as well as their excellent seismic performance, mainly due to high strength to weight ratio compared to steel and concrete ones, flexibility, and redundancy. However, in order to meet the maximum inter-story drifts prescribed in seismic design codes such as NCh 433: 2014 [1] at taller heights, an enormous challenging engineering problem emerges because sufficiently resistant, rigid and ductile connections and lateral assemblies are not available for timber to meet both the technical and economical restrictions. Therefore, the main objective is to develop strong and cost-effective timber-based lateral systems in order to become a real alternative at mid and high-rises, especially in seismic countries. In this investigation, the dynamic response of cross-laminated timber (CLT) composites combined with hollow steel profiles has been investigated in shear wall configuration. After experimental work, numerical modelling for simulating the dynamic behavior for this hybrid FPSW shear wall and spectral modal matrix analysis according to what is specified in [1] for 6 and 10 storeys buildings with FPSW, also was investigated. FPSW shear wall could doubling capacity and stiffness, in addition to significantly increasing ductility with respect to conventional walls made of equivalent wood material. In general terms, good agreement between the test and model results is observed.