上海闵浦二桥引桥桥墩设计与思考

Design and Thinking on the Approach Pier of Shanghai Minpu Second Bridge

闵浦二桥主桥为独塔双索面连续钢桁架斜拉桥,引桥上部结构为40m跨径简支小箱梁,下部结构为独柱桥墩。主要介绍:引桥独柱桥墩立柱截面尺寸的拟定与立柱水平线刚度计算;引桥桥墩在同等地震力作用下,纵、横向地震力对不同高度立柱的影响及桩基础布置规律。

The main bridge of Minpu Second Bridge in Shanghai is a steel truss cable-stayed bridge with single tower and double cable surface, with 40 m span simply box girder of the upper and single pier of lower structure. An initial draft of stud section size and rigidity calculation of stud horizontal line have been introduced in this paper. The author has also discussed the influence of vertical and horizontal earthquake stress to different height studs and the principle of pier foundation when the approach pier under the same earthquake stress.