EXPERIMENT STUDY ON ASEISMIC BEHAVIORS OF CHINESE ANCIENT STRUCTURE STRENGTHENED BY STEEL COMPONENTS

摘要

To protect Chinese ancient building aseismic behaviors of Chinese ancient wooden structure strengthened by steel components on tenon-mortise joint were studied by experiments. Based on actual sizes of some part of Taihe Palace in the Forbidden City,wooden frame models with a scale of 1:8 of the prototype structure were built considering tenonmortise connections. By manual loading means low cyclic reversed loading tests were carried out considering 3 unstrengthened models and 2 steel components strengthened models. By experiments loaddisplacement hysteretic curves as well as skeleton curves of the models were obtained;By analysis energy dissipation capability,stiffness degradation as well as deformation performance of each model were also studied. Results show that after the model is strengthened by steel components on tenon-mortise location,value of tenon pulled out of mortise becomes less;for the structure its stiffness and strength are enhanced,its stiffness degradation is not obvious,it still has good deformation performance and energy dissipation capability. Thus the strengthening method is effective.