木框架-夹板剪力墙组合结构抗侧力性能试验研究

In order to investigate the lateral performance of timber frame-midply shear wall hybrid system, cyclic loading tests were conducted on five timber frame-midply shear wall hybrid systems, two post-and-beam frames and two midply shear walls. The Failure mode, lateral stiffness, ultimate bearing capacity, ductility, stiffness degradation and energy dissipation of the specimens were analyzed. The test results show that the lateral performance of timber frame-midply shear wall hybrid system depends on the behavior of the infill midply shear wall, and the failure mode is governed by detachment of the joint studs. Due to the constraints from the outer post-and-beam frame, the uplift of the end stud in the infill midply shear wall can be minimized, which may make hold-down systems unnecessary. The timber frame-midply shear wall hybrid system has twice the lateral stiffness and ultimate bearing capacity as comparable timber frame structures infilled with normal wood-frame shear walls. Moreover, in the case of large deformation, this hybrid system can still carry a load of 70% of its load-carrying capacity, a case which helps prevent collapse in severe earthquakes.