Mechanical Properties Of Insulation Masonry Composite Structure And Finite Element Analysis

With the proposition of the twelfth five-year-plan, the basic state policy of"saving resource and protecting cultivated land"has to meet higher demand. Combination of thermal insulation masonry structure is of great potential use of new green energy-saving materials, autoclaved aerated concrete block masonry.While it is seldom used as the bearing wall in structure but mainly used in retaining structure. Based on relative research at home and abroad, this thesis conducts mechanical experiment, theoretical analysis and ANSYS finite element simulation on insulated composite masonry, which is combined by autoclaved aerated concrete masonry, self-compacting beam-column concrete of light arrogation and insulated masonry mortar concrete. The specific contents are as follows:Firstly, through basic mechanics experiment on autoclaved aerated concrete masonry which is formed by masonry mortar and of good capability of heat preservation (the slope angleθbetween masonry mortar and horizontal lines is 0°, 22.5°, 45°and 67.5°), some basic mechanical properties of the masonry, such as axial compressive strength, poisson ratio and stress-strain curves have been tested. And then the constitutive relation curves of insulated mortar masonry have been proposed.Secondly, according to basic theory of elastic foundation beam, the calculation formula for bearing capacity of composite masonry under the vertical and even distributed axis load has been deduced. During the process, the following factors are considered: angular displacement of beam, masonry elastic modules, compressive stiffness of structural column, bending stiffness of ring beam and structural column, and coordination of masonry and column.Thirdly, this thesis mainly conducts nonlinear finite element calculation on insulated composite masonry through ANSYS software and simulates composite structure under vertical and even distributed load. It also analyzes composite masonry's relative characteristics, such as bearing capacity, load displacement and failure mode of cracks.