摘要
京沪高速公路某特大桥为三联预应力混凝土连续刚构箱梁桥。经过多年的运营,该桥箱梁底部出现了较多横向裂缝。通过桥梁检测,确定横向裂缝产生的原因,采取以有粘结体外预应力为主的加固方案对该桥进行加固,社会经济效益显著。
A super bridge on Jing-Hu Expressway is a prestressed concrete continuous rigid-frame box girder bridge. After years of operation, some transverse cracks appear at the bottom of box girder. By testing the bridge, the causes of transverse cracks are determined, the reinforcement project which mainly rely on external prestress with bond is used to reinforce the bridge, which has prominent social and economic benefit.
出处
《交通标准化》
2010年第3期224-227,共4页
Communications Standardization
关键词
病害检测
加固
有粘结体外预应力
承载能力
耐久性
disease test
reinforcement
external prestress with bond
bearing capacity
durability
