扇形布置法变宽组合箱梁桥纵向受力分析

对互通内常见的变宽桥梁在变宽幅度不大的情况下提出了采用装配式预制结构的设计思路，并从理论角度对变宽桥与等宽桥的受力特性进行对比，结合多种程序计算结果，提出一般性的设计原则和简化思路．可供互通主线长大桥中的局部变宽设计参考。

Longitudinal Mechanics Analysis for Fan-shaped Composite Box Girder Bridge with Variable Width

The design thought of using fabricated structure for bridge with variable width in interchange is put forward in this paper;the mechanics properties of bridge with variable and constant width are compared from theoretical point;general design principles and simplified thinking are proposed according to calculation results. The research could be taken as reference for the design in interchange bridge with variable width.