| In recent years, light wood structure house gradually rise in China, but the correlative research is just beginning, to grasp the new technologies related to the new building structure, it is urgent to learn from the advanced country. In this paper, the solid model of light wood structure house served as the core of study, the author researched the impact of lateral loads on light wood structure house by the methods of testing and simulation analysis from the friction between wood and other structural artificial wood panel, the friction between wood structure components with or without nailing connection, the friction between shear walls and basis of house. Main research contents, methods and conclusions are as follows:To carry out experiment of friction between solid timber specimens and a variety of artificial wood panel using architecture structures, the friction coefficient of the timber as structure wood through the test was calculated (coefficient is about 0.7-0.9), impact of timber gravity on the friction coefficient and their correlation was found, the result showed a negative correlation, which the friction coefficient is gradually decreasing with increasing of the wood gravity. The ratio of dynamic-static friction coefficient is about 0.6-0.9.There exists a negative correlation when we carried out the intersection friction experiments (the dynamic-static friction experiment of solid timber specimen and others) during solid woods, but using other materials, the results of experiments isn't significant. The negative correlation became evident, when the specimen gravity was processed by average proportion.The average friction coefficient of the bottom beam using SPF commercial timber and plywood using conifers is 0.285 (range of 0.2-0.35), the value of friction coefficient can be 0.25 in project design. Friction damping is about half of the total damping. During the design we should consider that the friction between components brought the damping decay, precisely ascertain scope of component reliability.When the friction between the bottom beam of shear wall and the basic panel attained a stable equilibrium, the friction was little effect before and after using the connectors (negligible). One-way and repeated loading tests about nailing connection showed that the load-displacement curves taken on the characteristics of highly nonlinear, the pinching and shrinking as well as intension reduction and stiffness reduction.We developed a model for the contact friction coefficient between structure woods based on the friction theory. A novel method was proposed to evaluate the friction coefficient by using the finite element method.In this thesis, we used model software and finite element analysis software to construct a 3D model of light wood structure house. The model combine finite element theory and friction theory, it can simulate the results of real experiment. We set the real experiment data as the boundary condition for the model system; the prediction is consistent with the real experiment data, so we believe that this model is proper for the mechanical analyze of light wood structure house. We also found that the precision of material character parameters is very important for a good prediction, so how to measure the parameters is a challenge in this research.This experiment is part of collaborative research in Japan, despite the current popular main construction materials in Japan as the research object, but the test method can provide reference for similar studies in China, the conclusions in the paper has a high reference value for timber utilization in our country, especially in northeast district.In this paper, except the experiment, the thesis analyzed construction and utilization of the light wooden house in our country and abroad, and to re-launched use of wood, the author put forward views and suggestions. |
PDF Full Text Request