摘要
朔黄铁路某(8+16+8)桥钢筋混凝土梁的状态较差,钢筋锈蚀和混凝土剥落严重,耐久性问题突出,不能保证桥梁处于正常运营状态。本文结合朔黄铁路开行大轴重重载列车的需求,对该桥梁的加固改造方案进行研究,并建议采用增大截面或梁体置换法对跨度8 m钢筋混凝土T梁进行加固改造,采用辅助钢梁法对跨度16 m超低高度预应力混凝土T梁进行加固。
A 3-span （ 8 ＋16 ＋8） m defected reinforced concrete bridge in Shuozhou-Huanghuagang railway,with severe steel rusting and concrete spalling,was studied in this paper. Its existed damage and weakened durability threatened the normal operation. On the other hand,heavy haul railway was planned for the line in the future. Given the actual state of the bridge with damage and the pending heavy axle loads,the strengthening program was studied. The 8 m reinforced concrete Tgirder was suggested to be strengthened through larger profile or girder replacement while the 16 m extremely shallow prestressed concrete Tgirder was strengthened with auxiliary steel girder.
出处
《铁道建筑》
北大核心
2016年第4期22-25,34,共5页
Railway Engineering
关键词
钢筋锈蚀
疲劳
加固
换梁
Steel rusting
Fatigue
Strengthening
Girder replacem ent
作者简介
李保龙（1979-），男，工程师，硕士。
