分节段现浇PC连续梁支架内力重分布及受力监测研究  

Research on the Internal Force Redistribution and Force Monitoring of Segmental Cast-in-place PC Continuous Beam Supports

作　　者：张文元 Zhang Wenyuan(China Railway 12th Bureau Group 3rd Engineering Co.,Ltd.,Taiyuan 030024,China)

机构地区：[1]中铁十二局集团第三工程有限公司,太原市030024

出　　处：《北方交通》2025年第2期21-24,共4页Northern Communications

摘　　要：预应力混凝土连续梁常采用支架法现浇施工。以某公路(55+85+55)m连续梁为研究对象,采用Midas Civil有限元软件建立计算模型,分析各施工阶段钢束张拉对支架受力的影响,并在支架上安装压力传感器进行支架受力监测,现场监测数据与理论计算值较为吻合。结果表明,该连续梁施工过程中支架内力重分布现象较为明显,施工中应引起重视。Prestressed concrete continuous beams are often used in the cast-in-place construction with the support method.Taking the(55+85+55)m continuous beam of a highway as the research object,the calculation model is established by using the Midas Civil finite element software,the influence of steel bundle tension on the support force in various construction stages is analyzed,and the pressure sensor is installed on the support to monitor the support force,and the on-site monitoring data is in good agreement with the theoretical calculating value.The result shows that,the redistribution of the internal force of the support during the construction of the continuous beam is obvious,and attention should be paid to during the construction.

关 键 词：支架现浇 节段施工 连续梁 内力重分布 

分 类 号：U448.215[建筑科学—桥梁与隧道工程]