Cyclic load capacity and deformation mode of cross-laminated timber shear walls
He Minjuan1,2 Wang Xijun1 Li Zheng1,2
1. College of Civil Engineering,Tongji University,Shanghai 200092,China；
2. Key Laboratory of Performance Evolution and Control for Engineering Structures of the Ministry of Education,Tongji University,Shanghai 200092,China
Abstract： Cross-laminated timber (CLT) structures possess the advantages of renewable materials,easy assembly,and high load capacity. In order to investigate the lateral performance of CLT shear walls,the CLT shear wall specimens of platform-type and balloon-type with half-lapped wall-to-wall joints were designed and tested under quasi-static cyclic loading. The failure modes,initial stiffness,energy dissipation capacity,stiffness degradation characteristics of the specimens were obtained and compared. Results show that angle brackets,hold-downs and half-lapped wall-to-wall joints in the balloon-type CLT shear walls suffer more damages than those in the platform-type CLT shear walls. The initial stiffness and energy dissipation capacity of the balloon-type CLT shear walls are larger than those of the platform-type CLT shear walls. Meanwhile,the CLT shear walls constructed by the platform or balloon method exhibit obvious stiffness degradation characteristics during the cyclic loading process.
