Calculation and Analysis of Bending Bearing Capacity of UHPC Circular Components
Based on the verification of flexural test on ultra-high performance concrete(UHPC)circular component,three-dimensional finite element analysis of the flexural performance of UHPC circular components was conducted using the finite element analysis software ABAQUS.The analysis model considered the plastic damage characteristics of UHPC material,and investigated the influence of parameters such as diameter,wall thickness,longitudinal reinforcement ratio,and stirrup spacing on the flexural capacity of circular components.The results show that the load-deflection curve and failure mode obtained through finite element simulation are in good agreement with the experimental results.The variable parameter analysis results from finite element analysis indicate that the diameter,wall thickness,and reinforcement ratio significantly enhance the load-carrying capacity of UHPC circular component,with the vertical reinforcement ratio having the greatest impact on the flexural capacity of circular components,showing a linear increase with the increase in reinforcement ratio.The stirrup spacing has little effect on the flexural capacity of the component.Furthermore,based on the existing flexural capacity calculation formula for ordinary concrete circular component,the flexural capacity calculation method for UHPC circular component has been modified.The final results are highly accurate and can provide reference for practical engineering applications.
UHPC circular componentfinite element simulationparametric analysisbearing capacityflexural performance
万方数据
维普
