大跨宽箱连续刚构桥空间受力分析  

Space Forced Analysis on Large-Span Continuous Rigid Frame Bridge with Wide Box Girder

作　　者：何畅[1] 梁利辉[2] 

机构地区：[1]四川省交通厅规划勘察设计研究院,四川成都610041 [2]中交公路规划设计院,北京100010

出　　处：《重庆交通大学学报（自然科学版）》2009年第5期813-817,898,共6页Journal of Chongqing Jiaotong University(Natural Science)

摘　　要：大跨径宽箱连续刚构桥由于自身的力学特点,普遍存在箱梁开裂和跨中下挠过大等不良现象。以南河底特大桥的工程实际,利用空间有限元法对其进行整体及局部分析。通过分析比较,得到如何有效避免宽箱梁开裂和跨中下挠过大,对此类桥型具有普遍意义和工程实用价值。Because of the mechanic feature of large span continuous rigid frame bridge with wide box girder itself,the phenomena of cracks of the box girder and excessive deflection in the middle of the span widely exist. Taking Nanhedi Bridge as an example, both global and partial analysis on this bridge is carried out, using 3 D finite element method. The problem how to avoid the cracks in the box girder and excessive deflection in the middle of the span is resolved through the analysis and comparison which is worthy to apply into the engineering practice.

关 键 词：宽箱 连续刚构 有限元 受力分析 

分 类 号：U448.23[建筑科学—桥梁与隧道工程]