连续刚构大桥主墩钢围堰施工技术研究

Study on Steel Cofferdam Construction Technique of Main Pier for Continuous Rigid-frame Bridge

摘要:

以某主桥为连续刚构大桥为研究对象，介绍了大桥主墩在现状河道内围堰施工的设计情况，并采用有限元分析软件MIDAS对围堰的各构件在不利工况下的受力进行了验算[1-3]，围堰的安全施工保证了后续承台施工的安全。该案例的设计及分析可为同类工程的设计提供参考。

Abstract:

Taking a main bridge of continuous rigid-frame bridge as a study object, the design of the cofferdam construction of the main pier of the bridge within the current river is introduced. The finite element analysis software MIDAS is used to check and calculate the stress of each component of cofferdam under the unfavorable working condition. The safe construction of cofferdam guarantees the safety of follow-up construction of base slab. The design and analysis of this case can provide the reference for the design of the similar projects.