Experimental Study And Analysis On The Mechanical Properties Of The New-typed Wood-plastic Thermal Insulation Wall

The research of the wood-plastic thermal insulation wall has been made by waste materials including plastics and wood flowers and a series advantages including uncomplicated manufacture process, environmental protection and low cost. It satisfies the increasing wall material requirements in building market. Few preliminary techniques of mix design, specification and the manufacture processing are understandable at present. However there is still much work to do when it is put into practice.Based on the experimental results, this paper has completed the analyses for the mechanical properties of the wood-plastic thermal insulation wall by means of finite element program ANSYS. The experimental data verifies the accuracy of the finite element model, and the finite element simulation may in turn make up the insufficiency of the experimental data. Finally, this paper obtains more comprehensive conclusions and provides useful theoretical reference for the popularization and application of the wood-plastic thermal insulation wall.The main researches of this thesis are as follows:(1) According to the Code, the mechanical properties of the wood-plastic thermal insulation wall material are investigated by tests. By experimental data analyzing, the compression strength, the bending strength and the load-displacement curves of the wood-plastic material are obtained. The results show that the strength and deformation ability satisfy the engineering requirements.(2) According to the Code, the mechanical properties of the wood-plastic thermal insulation wall are investigated by tests. By experimental data analyzing, the load carrying capacity under lateral load, the load carrying capacity under axial load and impact energy under impact load are obtained; the load-displacement curves and the stress-strain curves under lateral load, the load-displacement curves and the stress-strain curves under axial load and the resist impact resistance properties are analyzed. The results show that the wood-plastic thermal insulation wall has better mechanical properties than other comparable wall materials.(3) The analyses for the mechanical properties of the wood-plastic thermal insulation wall are completed by means of the finite element software ANSYS. Compared with the test results, the paper has additionally analyzed the influences by dimensional change and material property change on the load carrying capacity under lateral load. The results indicate that the dimensional change and material property change significantly affects load carrying capacity of plate.(4) In order to reduce the volume of the wood-plastic thermal insulation wall, this paper adopts both the complex method and the finite element optimal module in ANSYS programs respectively to optimize the dimensions design. The results of both methods are compared and the optimum design result is given which satisfies the design requirements. The materials and cost are reduced by using the optimal methods.(5) The analyses for the wood-plastic thermal insulation infilled wall steel frame system are carried on by means of the finite element software ANSYS. The paper simulates a one-span two-storey steel frame with the infilled wall. In comparison with the pure steel frame, the strength, rigidity, load-displacement curve, stiffness degeneration curve and ductility of the steel frame with the infilled wall are analyzed. The results show that the coordinated working performance between the wood-plastic thermal insulation infilled wall and the steel frame is excellent.