Research On Construction Technology Of New Composite Wall System On Its Performance

In recent years,China has been continuously optimizing its energy structure.The total consumption of coal resources in traditional energy sources has been greatly reduced,and the adjustment of energy structure is imperative.Building energy conservation is a global trend,and wall energy conservation is the most important part of building energy conservation.Based on the above background,combined with the existing conditions of Hunan,the development status of China's building energy-saving composite exterior wall system is compared and referenced.A new thermal insulation and decorative integrated composite wall system was proposed.The new thermal insulation and decorative composite wall system of a primary school in Changsha City was selected as the research object.The finite element model of ABAQUS finite element software was used to define the parameters of concrete damage model.The wall was made by ABAQUS/Explicit display analysis module.The numerical simulation of impact performance is used to study the mechanical behavior and failure performance of composite walls and internal components under impact loading.At the same time,different variable factors are set,including different impact speeds,different impact locations,different dry density grades of foam concrete,and different vertical keel spacing on the impact resistance of the wall.By extracting stress-strain diagrams and displacement time history Curves,relative displacement differences,calculation of foam concrete damage rate,analysis of simulation results,and comparison,put forward some practical suggestions or references for practical engineering.Combining the climatic characteristics of the hot summer and cold winter regions and combining the climate of Changsha,the two working conditions in accordance with the Changsha area are established.The temperature and water vapor pressure distribution inside the wall are studied,and the dew point inside the thermal insulation wall is analyzed.ID-DiaGram HVAC Auxiliary Software calculates the dew point temperature under Working Condition 1 and Working Condition 2,analyzes the surface condensation and internal condensation of the composite wall system in detail,and proposes the prevention and control measures for condensation according to the actual situationThrough the analysis of the structural composition of the composite wall,the statistical energy method(SEA method)is introduced to establish a new sound insulation composite wall SEA sound insulation prediction model,namely "space-wall-space",and analyze the modal energy between the three systems.Poor,the loss of sound in the process of transmission,the coupling loss of the system itself,the curve of the sound insulation of the wall is analyzed.At the same time,different thicknesses and comparisons of XPS plates were set,and the variation curve of the sound insulation of the composite wall was analyzed by SEA method.