三峡库区建峰乌江大桥设计与施工

建峰乌江大桥位于三峡库区，桥址所在河谷呈不对称“U”型。桥型设计为混凝土连续刚构桥，由两个单T构组成，且每个单T构的墩为对称布置。桥箱梁采用纵、横、竖三向预应力结构设计，其中纵向预应力束按全预应力理论设计，张拉时的张拉力与伸长量为控制标准，并以张拉力控制为主。箱梁施工分为悬浇和现浇两部分，悬浇采用挂篮悬臂浇筑。主要介绍了该桥的设计、施工细节以及设计跟踪控制措施，可为相关桥梁设计施工提供参考。

Design and construction of Jianfeng Bridge on Wujiang River in Three Gorges Reservoir area

Jianfeng Bridge on Wujiang River is located at Three Gorges Reservoir area,where the valley shows an asymmetry U type.The bridge is designed as continuous concrete rigid frame bridge consisted of two T-components,while the piles of the two T-components are symmetric.The box girder adopted 3-direction pre-stress design,in which the longitudinal pre-stress was designed by principle of full pre-stress,and controlled by tension force and longitudinal deformation,in which the tension force is dominated.The const...