Aseismic Performances of Chinese Ancient Tenon-mortise Structures Strengthened by Different Methods
Tenon-mortise joint is a main connection means between beam and column of Chinese ancient wooden buildings, however under earthquakes the joint is easy to be damaged.To effectively strengthening tenon mortise joint, 3 methods were contrasted by experiments.Based on actual sizes of an ancient building in the Forbidden City, wooden frame models with a scale of 1 : 8 of the prototype structure were built considering Yan-wei (dovetail) type of tenon-mortise connections.By manual loading means, pseudo-static tests were carried out to study aseismic performances of the models after their tenon-mortise joints were strengthened re spectively by iron hook, CFRP (Carbon Fiber Reinforced Plastic) sheets and steel components.9 tests were considered, including 3 tests for unstrengthened models,2 tests for each strengthening method above.By ex periments load-displacement hysteretic curves as well as skeleton curves of the models were obtained; by a nalysis their energy dissipation capability, stiffness degradation and deformation performance were studied;by comparison application range of each method was discussed.Results show that the wooden models have good deformation performance both before and after strengthened on tenon-mortise joints; for different strengthening method: CFRP sheets is best in bearing capability of model, iron hook is best in energy dissi pation capability of model, CFRP sheets is most serious in stiffness degradation of model.So it is advised that engineering application for different strengthening methods are: Iron hook-small wooden structure; CFRP sheets-medium and small sized wooden structures; steel components-medium and large sized wooden struc tures.
Oian Zhou Weiming Yan
Palace Museum, Beijing, China; Beijing Key Laboratory of Earthquake Engineering and Structural Retro Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Tech
国际会议
哈尔滨
英文
342-352
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）