ON INFLUENCE OF PRESTRESS LOSS ON SAFETY PERFORMANCE OF CHEMICAL CON-TAINMENT VESSEL
In view of the fact that the influence of pres-sure loss on the safety of chemical containment vessel under internal pressure environment cannot be ignored,this project intends to study the safety of chemical con-tainment structures from the perspective of structural mechanics under the pressures of 4 and 6 years of the design reference cycle.ABAQUS numerical simulation technology is adopted to simulate the three-dimensional fine numerical simulation of large vessels,and the me-chanical behavior of lining yield,prestressed steel yield and concrete crack propagation are simulated.After considering the prestress,the internal pressure load that the container can bear is reduced in the case of crack and liner failure.Under the critical pressure,the defor-mation of the vessel shows the external expansion of the vault and the internal expansion of the vault.
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