预应力门架式盖梁设计浅析  

Elementary Analysis on Design of Pre-stressed Frame Capping Beam

作　　者：杨金虎[1] 魏洪涛[1] 谢宝来[1] 

机构地区：[1]天津市市政工程设计研究院,天津市300051

出　　处：《城市道桥与防洪》2011年第8期166-168,14,共3页Urban Roads Bridges & Flood Control

摘　　要：以宁波市机场路快速干道与杭甬高速互通立交的A线匝道桥A9#墩-A11#墩三个墩位预应力盖梁为例,阐述预应力门架式盖梁的设计过程及计算模型,以及盖梁钢束张拉与上梁的相互穿插顺序、盖梁预应力张拉对墩柱产生的影响。The article describes the prestressed capping beams at three A9# pier ～ A11# pier positions of Line A ramps for the airport express trunk of Ningbo City and Hangyong Expressway Interchange,and sets forth the design process and the calculation model of the prestressed frame capping beam,and the influence of the interweaving sequence of capping beam steel strand tensioning with the upper beam,and the prestressing tensioning of capping beam on the pier columns.

关 键 词：盖梁 墩柱 应力 裂缝 

分 类 号：U443.2[建筑科学—桥梁与隧道工程]