高墩大跨曲线连续刚构桥的概念设计

为研究高墩大跨连续刚构桥的概念设计,基于实际设计项目,综合考虑桥梁的高墩、大跨、曲线桥特点和桥位处的强地震、高风速、严寒区等自然环境因素,从选线、桥型、景观、跨径、尺寸、刚度、稳定、抗震、施工、造价、材料和结构验算等角度出发,分析总结了高墩大跨连续刚构桥的设计思路及注意事项,从而为同类桥梁设计提供参考方法。

Conceptual Design of High-pier Long-span Curved Continuous Rigid-frame Bridge

Taking Hubei E-dong Yangtze River Highway Bridge as the engineering background, the finite element model of five exquisite segments of standard steel box girder is established by ANSYS to analyze the influence of six kinds of diaphragm spacing on the spatial distribution of torsional distortion normal stress of steel box girder subjected to eccentric load. The calculation analysis shows that the setting of transverse diaphragm can effectively restrain the warping and distortion effect of the box girder. The torsion distortion effect can be controlled in a small range when the standard steel box girder segment is set up with 3 transverse diaphragms.