Numerical Analysis of Wall Stability of Underground Prefabricated Group Tank
ZHANG Hao
ZHAI Yujia
CHEN Lei
Abstract：To investigate the stability of the wall of the prefabricated combined underground group tank(PCCUGT),finite element analysis was employed to analyze the critical buckling load of the PCCUGT wall under different parameters.The results show that the first-order buckling mode of the PCCUGT presents a global buckling in the form of a"sinusoidal waveform".According to the parameter sensitivity analysis,the regression coefficients of the concrete strength,the thickness of the internal waterproof steel plate,the thickness of the inner lining steel plate,the radius and the thickness of the concrete to the critical buckling load are 0.135,0.009,0.244,-0.658 and 0.68 respectively.It is demonstrated that increasing the concrete thickness and reducing the radius can enhance the critical buckling load of the combined tank wall.A formula for the critical buckling load of the PCCUGT wall was derived,providing a reference for the stability check of the PCCUGT wall.
Keywords：composite cylindrical shellstability analysisunderground group tankprefabricated composite structure
Publication Date：2025-03-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 100-105 )