Study On The Performance Of Wooden Shear-Wall And Tooth Metal Plate In Light Wood-Framed Structure

Light wood-framed structure, which is being gained attention and recognized, is a new structure system in China, so there are many work need to do in this field. Through experimental research and simulation analysis, the paper studied the tooth plate connector mechanical performance, nail connector load performance and the finite element analysis of wood shear walls and then verified the feasibility of building house using domestic raw material. At this basis, through a real light wood-framed house that was designed and built by ourselves, the paper carried on engineering practice. The main researchs are listed as following:(1) Refered with mature tooth metal plate products abroad and combined the actual processing capacity and materials, the paper designed a tooth metal plate connector and detected the connector mechanical performance by referencing wooden structure standard. The results showed the ultimate bearing and the ultimate shear capacity were influenced by the load and wood grain angle, shaft angle and plate load and other factors, and the ultimate bearing capacity of the self-designed tooth metal plate was less than that of the foreign product-SK-20; and there were many research works need to be improved to enhance performance.(2) The load-slip curves of nail connection in monotonic tests showed the character of high nonlinear, and the results showed the load performance of the spike is better than that of the wood screw in the panel nail connection testing, but the tensile and shear performance of screw is superior to that of spike. And through comparing the performance of domestic nail with aboard nail, the results indicated the performance of domestic nail connection is no less than abroad products, but the rigidity of the nail should be improved, which could improve the stiffness of the whole structure.(3) At base of the idea of simulation analysis, the paper, by using the software-SAP2000, simulated the maximum carrying capacity and stiffness of the wood shear walls under lateral loads. At this basis, the study, through set a series influence factors, which include different cover panel layout, types of nails and nail spacing, discussed the influence of different factors on the performance of wood shear wall under lateral load in the simulation analysis. The result indicated that for the 2.44m×2.44m wall, the vertical layout of the panel and cross brace can enhance the lateral performance; nail node, should be used the spikes referred in this experiment; In addition, the nail distance in the edge in the panel, which will effectively affect the lateral performance of the wall, should be small; the shear wall with opening performance will reduce the lateral wall.(4) The lateral performance of the wood shear wall, made form these domestic materials involved in the testing, is not inferior to the wood shear wall with foreign materials, but need to improve on the stiffness.(5) At base of these experimental and simulation analysis results, this study, through constructed a real house indicated that these domestic materials that can be used in practical projects, but in the field of engineering materials and analysis research, there, were many woks need to do, and then accelerated the localization of the technology of light wood-framed structure.