宁波招宝山大桥主桥24号墩主梁横梁加固设计  

Design for the Strengthening of the Cross-beam of the Girder over the 24# Pier of the Main Bridge of Zhaobaoshan Bridge in Ningbo

作　　者：孟庆标[1] 张燕飞[1] 朱华民[1] 

机构地区：[1]中铁大桥勘测设计院,湖北武汉430050

出　　处：《桥梁建设》2001年第3期27-30,共4页Bridge Construction

摘　　要：介绍了宁波招宝山大桥 2 4号墩附近横梁开裂及墩顶支座脱空的原因及其加固处理方案。开裂横梁通过加厚横隔梁厚度及增加体外预应力筋进行加固 。The cause of cracking of the cross beam and the grapping apart of the bearings on the 24# pier as well as the method of their strengthening and restoration are introduced. The cross beam was strengthened by the increase of its thickness and the application of prestress with external tendons. The gap at the bearing was closed through the addition of counter weight concrete and the adjustment of cable forces to make sure the bearings were effectively in action.

关 键 词：宁波市 招宝山大桥 预应力混凝土梁 横梁 支座 桥梁加固 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]