高墩大跨曲线刚构桥曲线箱梁剪力滞效应研究

The research on the shear lag effect of curved box girders of long span curved rigid frame bridge with high piers

以芦家沟大桥为工程背景,建立了实桥三维板壳有限元模型,对其进行了空间有限元分析,并用参数变换法对影响曲线箱梁剪力滞效应的主要因素进行了分析,总结出了连续曲线刚构桥曲线箱梁剪力滞效应随各种影响因素变化的规律,从而为此类桥梁的设计和建造提供借鉴与参考。

Based on Lujiagou Bridge, the 3D finite element model of Lujiagou Bridge is established, then, the primary factors which affect the shear lag effect of curved box girders are analyzed with the method of parameter transformation by analyzing the bridge model. The changing rules of the shear lag effect of curved box girders with the change of all kinds of factors are summarized, which provide some reference to the design and construction of this kind of bridge.