The Research On The Mechanics Properties Of Plybamboo Material And Structure

With the large-scale economic developments in our country, the timber resources gradually feels to be not enough to apply, many locality construction engineering section adopts the material of bamboo, being used as the one of the main substitutes in timber. And bamboo becomes mature quickly. The application of the material of bamboo and bamboo composite is gradually valued. Begin the research of bamboo has become an increasingly important lesson. Based on the bend experiment of the ply-bamboo rectangular beams, part mechanics properties of the plybamboo material and structure are researched in this dissertation.The mechanics properties research on the bamboo material is one of the foundation research works of bamboo and bamboo composite, the following contents are analyzed — the design theory, principle and process of the plybamboo bend experiment. The elasticity modulus and bend strength are calculating according to the testing data. Then these results are compared to the calculating result based on the theories formula. In addition, the destroyed model of the plybamboo samples during the experiment is observed, and then some corresponding measures are suggested.Aim at the overall flexural-torsional buckling phenomenon during experiment, critical moment formula and theory of steel structure is availed to calculating and analyzed the plybamboo structure. Then the test results are analyzed and compared with the theory result, in order to validate the feasibility of this method. Therefore, the factors effects to the overall flexural-torsional buckling are analyzed, and then some measures are advised. According to some practice engineering project, the plybamboo structure is tentatively researched including the constructing of foundation, floor, roof, wall structure and the transfer of the load. Finally, according to "Code and unify standard for design of building structure" and "Code for design of timber structure", the design strength values and bend strength and deforming are analyzed. Two connecting methods of the plybamboo structure are introduced, and then the mechanics properties of the concentration of node are researched.