斜拉桥PK断面主梁的空间应力分析与简化计算方法

Study on 3D stress analysis and simplified calculating methods for PK section girder of cable stayed bridges

针对混凝土斜拉桥PK断面主梁,进行了空间应力分析,并与平面应力进行对比;对主梁翼缘有效宽度、活载横向分布、横梁、横梁翼缘有效宽度的现有实用简化计算方法进行了分析与评价,并给出合理的简化计算方法和参数取值。

The 3D stress analysis for concrete cable stayed bridges Pasco-Kennewick （PK） section girder is given, and is contrasted with its plane stress. The existing simplified calculating methods for girder effective flange width, eccentric load effect, cross beam and cross beam effective flange width are analyzed and evaluated. The reasonable simplified calculating methods and values of parameters are put forward.