摘要
连续刚构桥采用墩梁固结体系,无需设置大吨位支座,避免了运营期间支座的维护和更换,大大降低了桥梁后期的管养成本,具有广阔的应用前景。四川怀德沱江大桥采用主跨130 m变高度预应力混凝土连续刚构桥,介绍了该大跨刚构桥的设计参数、施工方案、计算方法等,检算结果表明该桥设计合理、各项指标满足规范要求,可为以后同类型桥梁设计提供参考。
A continuous rigid-frame bridge adopts the pier-beam consolidation system without large-tonnage supports,which can avoid the maintenance and replacement of supports during operation and greatly reduce the later management and maintenance costs of bridge.Its application prospect is wide.Tuojiang River Bridge in Huade of Sichuan is a variable-height pre-stressed concrete continuous rigid-frame bridge with a 130-m main span.The design parameters,construction scheme and calculation method of this long-span rigid-frame bridge are introduced.The check and calculation results shows that the design of this bridge is reasonable and various indexes meet the standard requirements,which can be referred for the design of the similar bridges later.
出处
《城市道桥与防洪》
2020年第3期62-66,M0009,共6页
Urban Roads Bridges & Flood Control
关键词
连续刚构
三向预应力
体外预应力
双肢薄壁
内力调整
屈曲稳定
continuous rigid frame
three-dimension prestressing
external prestressing
double-shaft thin wall
adjustment of internal force
buckling stability
