宽箱梁荷载横向分布的探讨  

Research on Transverse Load Distribution for Broad Box Girder

作　　者：曹海顺[1] 洪国治[1] 

机构地区：[1]同济大学,上海200092

出　　处：《结构工程师》2005年第2期39-42,共4页Structural Engineers

摘　　要：变截面连续箱梁桥、连续刚架桥的设计,一般均将桥跨结构视作弹性梁元,采用平面杆系程序计算。荷载偏心用增大系数法考虑,增大系数的取值对于宽跨比很大的城市桥梁具有很大的任意性。本文以某实桥为背景,采用ANSYS结构分析通用程序计算了多个特征断面各腹板的横向分布系数。据此,对照了按荷载横向分布简化算法的计算结果,所得出的结论,可为同类工程设计提供参考。During the design of continuous girder bridges and rigid frame bridges with variable cross-sections, bridge structures are generally analyzed as elastic beams with programs of 2-D bars. Load off-centering is considered by enhancement coefficient. For City bridges with large width-span ratio, enhancement coefficient is adopted arbitrarily. Transverse distribution coefficient of sternums is calculated by ANSYS in several typical sections of a real bridge project and is compared with results calculated by the simplified method. Results can be used as references.

关 键 词：荷载横向分布 宽箱梁 横向分布系数 程序计算 连续箱梁桥 连续刚架桥 ANSYS 桥跨结构 平面杆系 城市桥梁 增大系数 结构分析 计算结果 简化算法 工程设计 变截面 系数法 任意性 宽跨比 通用 

分 类 号：U441.5[建筑科学—桥梁与隧道工程]