Abstract:In order to select an appropriate reinforcement design scheme for a frozen damaged folded-plate sedimentation tank, the relevant investigations, detection and finite element analysis on it are conducted. Through the detection, the distribution patterns of cracks and the relevant parameters of steel bars and concrete are obtained. The detection and analysis results indicate that the problems caused by the deficiency of concrete quality may induce the through cracks that harm the structure when the water tank is damaged by freezing. By modeling the water tank using three-dimensional finite element and conducting the coupled analysis of the temperature field and water pressure, the results can better reflect the actual damage of the water tank, but the calculated damage is relatively larger than the actual. The maximum displacement of the tank wall perpendicular to the wall surface at the expansion joint position is significantly greater than that under normal conditions when subjected to frost damage. Based on the principles of fully utilizing the strength of newly poured concrete materials and reducing the tensile stress on the damaged tank walls, a comparative finite element analysis is conducted on single-sided reinforcement and double-sided reinforcement methods. The results show that the double-sided reinforcement method of setting up panel walls on both sides of the damaged wall can achieve a better reinforcement effect.
