钢管立柱与贝雷梁组合拱架结构形式比选分析  

Comparison and Analysis of Structure Form of Steel Tubular Columns and Bailey Beam Arch Combination

作　　者：温江凡 钟伟[2] 

机构地区：[1]贵州省水利投资(集团)有限责任公司,贵阳市550002 [2]贵州省交通规划勘察设计研究院股份有限公司,贵阳市550081

出　　处：《公路》2015年第1期80-85,共6页Highway

摘　　要：以钢管立柱与贝雷梁组合拱架结构的某六连拱渡槽施工为工程背景,对于高次超静定组合拱架结构,应用有限元理论计算分析了拱式、简支与连续组合、简支等3种贝雷梁组合拱架结构形式。基于应力、变形、稳定性基本参数的控制,分析贝雷梁组合拱架在3种结构形式中的不同表现,理论上得出钢管立柱上部贝雷梁组合拱架更合理的结构形式。其中,拱式结构在相同工况下比另外两种结构形式最大可以减少约24.7%的最大竖向变形值,对应3种工况,拱结构形式拱架应力相应减小;稳定性增强了约28.6%。Based on the construction of steel-pipe posts and Bailey arch combination of a six continuous arch aqueduct, for the high order statically indeterminate support structure, three types bailey arch structure forms is analyzed by the finite element theory calculation which are arch, simply supported and continuous composite beam, and simply supported beam. On the basis of the basic parameters control to deformation, stress, and stability, different performance of bailey arch combination in the three types of structure forms are analyzed, then it is concluded that the more reasonable structure form of bailey beam combination arch up of the steel tube columns. Among them, compared to the other two kinds of structures, the bailey arch structure can reduce about 20% of the largest deformation in the same condition. Corresponding to the three different conditions, arch stress has a corresponding decrease, and stability is enhanced by about 28. 6%.

关 键 词：钢管立柱 贝雷梁 组合拱架 渡槽 结构形式 

分 类 号：U441.5[建筑科学—桥梁与隧道工程]