既有空心板梁桥横向预应力加固试验研究  

Experimental research on transverse prestressing strengthening of existing hollow slab girder bridge

作　　者：崔洪年 张永宾 邓鸣 Cui Hongnian;Zhang Yongbin;Deng Ming(Urban Road and Bridge Management Center of Tianjin,Tianjin 300171,China;Tianjin Transportation Research Institute,Tianjin 300074,China;College of Civil Engineering,Changsha University,Changsha 410003,China)

机构地区：[1]天津市城市道路桥梁管理事务中心,天津300171 [2]天津市交通科学研究院,天津300074 [3]长沙学院土木工程学院,湖南长沙410003

出　　处：《山西建筑》2020年第18期140-141,148,共3页Shanxi Architecture

摘　　要：针对装配式空心板梁桥铰缝开裂、破损的问题,采用碳纤维预应力板对桥梁横向进行加固。以某立交桥为工程背景进行了加固设计及实施,并在加固过程中进行了实桥试验。结果表明,采用横向预应力加固后,桥梁的整体性得到加强,最大受力梁体的挠度降低9.5%~10.2%,横向分布系数降低5.5%~8.5%。In order to solve the problem of crack and damage of hinge joint of fabricated hollow slab beam bridge,the external transverse prestress is used to reinforce the bridge.In this paper,the strengthening design and implementation of an overpass are carried out,and the bridge test is carried out in the course of strengthening.The results show that the integrity of the bridge is strengthened and the deflection of the beam decreases by 9.5%~10.2%,and the transverse distribution coefficient decreased by 5.5%~8.5%.

关 键 词：装配式空心板桥 铰缝 加固 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]