Study of The Section Width To Thickness Ratio of Cross Section Thin-walled Hollow Pier 

Chengjun YAN 

College of Civil Engineering, Chongqing Jiaotong University, Chongqing, 400074, CHINA 

Abstract: The formula of the constant section of buckling ｌｏａｄ was derived via A.H.KopoóoB’s method, which consider. The influence of gravity. The expression of the formula was simplified by unified. Thin-wall hollow pier was composed by thin plate. According to the destructional forms that thin-wall hollow pier occurs preferentially overall buckling, the stress of overall stability is less than the local critical stress as a control condition, deduced the critical thickness ratio (thickness) formula of compression wall, which the pier should meet. Verified the formula by using finite element model. The results show that it is feasible to calculate the ultimate thickness under known plate width by using the formula in this paper. 

Keywords: Thin-wall hollow pier; Local stability; Limit width-to-thickness ratio; Critical stress