摘要
某大跨度预应力混凝土系杆拱桥在施工过程中,由于运梁车需从桥面通过,故上部钢管拱桥需滞后施工。此时,系梁荷载达到4 480t,而上部通过的运梁车自重达1 200t。因此,有必要参考实际施工过程对本项目中满堂支架的强度、刚度、稳定性进行验算并给出施工参考性建议,以保证结构施工的安全性。
The construction of the steel arch rib in a long-span pre-stressed concrete arch bridge has to be delayed due to the girder transporting vehicles pas sing through. This leads to the prestressed concrete girder carrying a load of 1200 tons in addition to its self-weight o f4480 tons. Thus, it＇s necessary to check the strength, stiffness as well as the stability of the scaffoldings used to support the girders, for the purpose to provide a construction suggestion and to ensure the safety during construction.
出处
《工程建设与设计》
2014年第6期117-119,共3页
Construction & Design for Engineering
关键词
满堂支架
运梁车
刚度
强度
scaffoldings
girder transporting vehicles
stiffiaess
slrength
