Analysis Of Compression And Bending Of EVG-3D Plate And Discussion On Reinforcement Of Structure

Low-rise housing has remained popular in rural and urban-rural in China.With the implementation of the new rural construction policy,low-rise residential buildings will continue to be the most common buildings in the new era.Due to the high cost in labor,material and financing as well as high levels of population for building a traditional residence home,Chinese government has been actively promoting energy and cost efficient residential buildings nationwide.New sustainable stronger building material is projected to gradually increase over time than the current alternative.Evg-3D structure system originated in Austria and consists of a three-dimensional welded wire space frame fitted with an expanded polystyrene insulation core,which perfectly meets the current requirements for building a lowrise residential home.The wall and floor of the structure system are all made of steel grid cement sandwich panel.Using the finite element software ANSYS,we carried out nonlinear mechanical analysis on the mechanical properties of steel grid cement sandwich panel.We then describe the following result from the analysis: the finite element analysis method in detail,the theoretical basis of ANSYS modeling of reinforced concrete structure,and the constitutive relationship of concrete material and steel wire.Combined with the design and calculation formula of corresponding components in relevant specifications,the design and calculation formula of bending bearing capacity and axial compression bearing capacity of steel wire grid cement sandwich plate are given.To analyze the mechanical characteristics of evg-3d slab,five groups of 21 bending bearing capacity models and five groups of 21 axial compression bearing capacity models were established using ANSYS software.The models were then applied in the analysis of the effects of concrete strength grade,slab span(wall height),concrete thick Ness,thick Ness of polystyrene core plate and steel mesh diameter on its mechanical properties were systematically analyzed.Through the analysis,it is concluded that:(1)The bearing capacity of slab increases slightly along with increased concrete grade.The increase of concrete thick Ness will effectively improve the bearing capacity of slab.However,EVG-3D bearing capacity decreased dramatically along with an increase in the 3D slab span suggesting that it is not suitable for large space structure.(2)The axial bearing capacity of 3D slab fully meets the requirements of evg-3d structure.The axial bearing capacity of slab increases along with increased concrete strength grade and concrete thick Ness,but decreases along with increase of slab slenderness ratio.The impact of polystyrene slab thick Ness on EVG-3D bearing capacity is negligible.In summary,using the finite element software ANSYS we applied the single wall model in the analysis of the wall cracks and excessive displacement.The overall stiffness of the structure is increased by applying the pull rod,so as to achieve the purpose of reinforcement.Our reinforcement analysis using ANSYS effectively reduced the horizontal displacement by more than 10% and slowed cracks developing,resulting in a strengthened wall structure in the building.