宁波招宝山大桥主桥49.5m跨主梁加固设计  

Design for the Strengthening of the Main Girder with a Span Length of 49.5m of the Main Bridge of Zhaobaoshan Bridge in Ningbo

作　　者：朱华民[1] 孟庆标[1] 秦顺全[2] 

机构地区：[1]中铁大桥勘测设计院,湖北武汉430050 [2]中铁大桥局集团有限公司,湖北武汉430050

出　　处：《桥梁建设》2001年第3期22-26,共5页Bridge Construction

摘　　要：宁波招宝山大桥主桥 4 9.5m跨主梁施工阶段发现了许多有规律的裂缝 ,介绍了裂缝产生的原因及其结构加固方案。Many regular cracks were found during the construction of 49.5 m span main girder of the main bridge of Zhaobaoshan birdge. The cause of the crack formation and the method of strengthening are introduced. The cracked girder was strengthened with longitudinal stringers and cross beams built in it and external prestressed tendons to insure its bearing capacity.

关 键 词：宁波市 招宝山大桥 预应力混凝土梁 桥梁加固 处理方法 桥梁设计 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]