Stress Test of Precast Concrete Materials for Prefabricated Buildings by Numerical Analysis

Abstract

There are serious environmental pollution problems in traditional construction operations. To improve China's construction industry, precast concrete has become one of the important environmental protection materials. Therefore, the stress of precast concrete is deeply analyzed. Based on the numerical analysis, prefabricated concrete buildings and other theories, numerical analysis and finite element method are taken as the research methods to analyze the mechanical properties of precast concrete materials and of steel bars. Finally, the situation and level of the DW1 specimen and DW2 specimen after the influence of the sliding and rotation of the ground beam on the horizontal displacement of the vertex are expounded from various aspects. The research results show that in terms of the mechanical properties of precast concrete materials, the performance data of prefabricated wallboards are all above 37, which is higher than the average strength. In the analysis of mechanical properties of steel bars, the steel bar with a diameter of 8 has a yield strength of 456.4 Mpa, an ultimate strength of 617.3 Mpa, and an elongation of 25.6%. The steel bar with this diameter has the best properties. In DW1 specimen and DW2 specimen, with the continuous progress of the loading process, the overturning moment caused by horizontal loads is also gradually increasing. In the horizontal level of prefabricated building materials, the increase of the axial compression ratio increases the anti-overturning moment of the specimen, and the peak bearing capacity of the specimen increases significantly, but the ductility decreases significantly. In the bearing capacity, there is little difference between the measured bearing capacity and the calculated bearing capacity of each specimen with vertical force applied. Therefore, the force test of precast concrete materials in prefabricated buildings is deeply studied based on numerical analysis, which has an important guiding significance for the construction industry to improve business performance and market competitiveness.