大跨连续刚构桥的高墩弹性稳定分析.PDF

31, 6 Vo.l 31, No. 6 2 0 0 6 1 2 Central South H ighw ay Engineering Dec. , 2 0 0 6 , , 410082) [ ] , , ANSYS, , , 2 ; [] ; ; ; ; [ ] U 441 [] A [] 1002) 1205 (2006) 06) 0046) 05 High PierElastic StabilityAnalysisofLong Span n ContinuousFrame Bridge c . WANG Jiejun, CHEN Quankai (C ollege of C ivil Engineering, H unan Un iversity, Changsha, 410082) g r [Abstract] Based on the classical elastic theories, the firs-t order buck ling m odal of a constant 库 cross-section colum n was d istingu ished, w ith the effect of un iform ly d istributed load and w ind load. 例 o Through the fin ite elem ent m ethod, h igh-p ier elastic stab ilization in the course of the construction of a . continuous fram e bridge w as analyzed, and the buckling m oda,l the eigenvalue and the critical load w ere 案 o E ob tained. C omparing the results of the tw o m ethods m entioned above, recomm endations of the high-p ier A e buckling safety factor of continuous fram e bridge w ere presented. C m [Key words] continuous fram e bridge; high p ier; construction procedure; ela