预制斜转正桥梁受力特征与设计分析

Analysis on Force Characteristics and Design of the Precast in Transferring Skew into Orthogonality

受桥下使用功能影响,斜转正桥梁越来越多的出现在工程实例中,其中预制结构斜转正桥梁通过调整梁长的方式可方便实现桥梁上部角度变化需要,具有技术成熟、施工周期短、不影响交通等优势,但其受力上具有明显不利弯扭效应。采用梁格法建立一典型斜转正桥梁有限元模型,分析其受力特征及产生因素,并结合工程经验阐述了斜转正桥梁相关设计注意事项,可供同行参考。

With the function effect of bridge,transferring skew into orthogonality has become more and more often used in engineering projects.The prefabricated structure by adjusting the length of beam can be convenient to realize angle change of bridge,with the advantages of mature technology,short construction period,and no affecting the traffic.But it has adverse flexural-torsional effect.The paper uses the beam grillage method to establish a finite element model,analyzes the mechanics characteristics and factors,elaborates design considerations related to transferring skew into Orthogonality.For reference to the same occupation.