Abstract：Horizontal cyclic pseudo-static experimental study were conducted separately on parallel and perpendicular to joist direction of light wood-steel hybrid diaphragm of 4.8×2.8m, by which its deformation feature, failure mode, strength, in-plane stiffness, energy dissipation and ductility were obtained. The result showed that whatever the diaphragm was loaded parallel or perpendicular to joist, shear deformation occupied the vast majority of total deformation and panel nail clipped outside the two loading point was the main failure mode. Moreover, In contrast to the diaphragm loaded parallel to joist, it loaded perpendicular maintained higher strength, in-plane stiffness, better energy dissipation performance and ductility. In addition, these parameters were compared with the provision in FEMA273, ASCE 41-06 and NSZEE. The consequence indicated that the diaphragm’s in-plane stiffness was significantly lower than the provision in FEMA273 but higher than ASCE 41-06 and NSZEE, however, it was more close to ASCE 41-06. What’s more, its strength and ductility both exceeded the recommendation of all of these standards.
2014, Vol. 33 
