Finite Element Analysis of Temperature Effects on Underground Large-Diameter Concrete Cylinders Using ABAQUS

Abstract

With the increasing demand for storage capacity, the diameter of silos has also been continuously increased. For this kind of large-diameter concrete cylinder, the temperature load has a great influence, especially the cylinder structure located underground, and the stress characteristics are more complicated under the influence of earth pressure and gradient temperature. This study investigates the stress distribution and deformation in underground large-diameter concrete cylinders under temperature loads using finite element analysis with ABAQUS. By simulating temperature changes through boundary conditions, the research identifies critical stress patterns, particularly the significant hoop tensile stress observed during temperature decreases, which peaks at 2.75 MPa. These findings emphasize the need for enhanced tensile capacity in specific regions of the structure. The results provide valuable insights for optimizing the design and ensuring the structural integrity of underground concrete cylinders under varying thermal conditions.