预应力混凝土连续梁桥悬臂浇筑施工参数敏感性研究

Study on the Sensitivity of Construction Parameters of Cantilever Casting Construction of Prestressed Concrete Continuous Beam Bridge

以某悬臂浇筑施工的预应力混凝土连续梁桥为研究对象,通过Midas Civil有限元软件进行建模计算,探讨结构自重、刚度和预应力张拉控制力等敏感性参数对施工控制的影响,为施工监控提供参考依据。结果表明,桥梁结构自重、刚度和预应力张拉控制力均会对桥梁结构产生较大影响,施工时要严格控制混凝土质量和预应力张拉质量。

Taking a prestressed concrete continuous beam bridge of cantilever placement as the research object,Midas Civil finite element software was used to conduct modeling and calculation,and the influence of sensitive parameters such as structural dead weight,stiffness and prestressed tension control force on construction control was discussed,so as to provide reference for construction monitoring.The results show that the weight,stiffness and tension control force of the bridge structure will have a great influence on the bridge structure,and the quality of the concrete and the prestressed tension quality should be strictly controlled during construction.