In order to grasp the statics characteristics of the vertical energy storage tank structure,based on a 30 000 m3 vertical hot water energy storage tank project,relying on remote monitoring technology to collect the tank wall stress and temperature data under operating conditions,the rationality of the finite element simulation method was verified by comparing the collected results with the analysis results of the finite element model established by considering the friction contact constraint of the tank bottom.Based on the measured temperature data,the displacement and stress distribution law of the tank wall under the thermal-mechanical coupling of the vertical energy storage tank wall were studied.The results show that the bottom and top of the tank wall are the sensitive areas of temperature influence,and the temperature increases,which causes compressive stress.For the circumferential stress,the influence of temperature load at the bottom is more significant than that at the top.For the vertical stress,the influence is mainly on the bottom of the tank wall;the temperature has a great influence on the deformation of the tank wall.When the tank is empty,the maximum displacement position appears at the top of the tank wall.When the tank is full,the maximum deformation position appears in the middle and upper part,and the temperature effect is greater than the effect of hydrostatic pressure on the deformation of the tank wall.
vertical energy storage tankhealth monitoringfinite element analysisthermal-mechanical coupling
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