宽箱梁荷载横向分布的探讨

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。

Research on Transverse Load Distribution for Broad Box Girder

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.