Experimental Testing of a Low-Damage Post-Tensioned C-Shaped CLT Core-Wall

The development of strong and stiff lateral load-resisting systems (LLRS) is essential for mid-rise high-rise timber buildings. On the other hand, within a seismic design philosophy, strength/stiffness ductility/drift capacity typically appear as opposite target parameters, depending on acceptable level damage. For improved stiffness strength, core-wall tubular structural forms commonly are used taller reinforced concrete (RC) This paper presents an experimental study new type LLRS in cross-laminated (CLT). A post-tensioned C-shaped CLT mainly using screwed connections was designed tested under unidirectional bidirectional cyclic loading. It found that mixed-angle connection solution most effective. highest partial composite action 60%–70% reached system at serviceability limit state increased more than four times compared with decoupled test only friction between panels. (unbonded) post-tensioning technology provided base recentering capability small residual displacements. results confirmed significant can be achieved minimal damage through careful detailing.