摘要
箱型断面大跨PC梁是应用最广、最为常见的中大跨度梁桥方案。在长期的运营过程中,也发现了梁体开裂、跨中下挠等具有代表性的病害。其中,底板开裂是较为常见的病害类型。现针对底板受力进行分析,通过对不同影响因素的定量计算,揭示了恒载、活载对底板受力的影响,并在此基础上,提出了结构优化设计方案。
The large-span PC beam with box section is the most widely used and most common scheme of medium and large span girder bridge.In the long-term operation process,typical representative diseases such as beam cracking and mid-span deflection have also been found.Bottom plate cracking is a more common type of disease.In this paper,the influence of constant load and live load on the force of the base plate is revealed through the quantitative calculation of different influencing factors,and a structural optimization design scheme is proposed on this basis.
出处
《上海公路》
2023年第3期52-55,59,M0005,共6页
Shanghai Highways
关键词
大跨PC梁
箱型断面
底板开裂
横向框架计算
底板束外崩力
large span PC beam
box-type section
bottom plate cracking
transverse frame calculation
bottom plate bundle collapse force
