摘要
为研究跨高速组合梁在顶推施工过程中的关键技术,以某单跨60 m的简支钢混组合梁工程为依托,针对顶推施工的主要难点,提出了一套能够保证施工精度和安全性的总体施工方案,具体包括施工工艺、纠偏方案、施工流程及步骤等内容。通过合理优化施工过程中的顶推工艺,详细分析了顶推施工中各个关键工况下结构部件的受力情况,重点探讨了组合梁顶推过程中可能出现的强度、刚度以及变形等问题,并对建成后的组合梁进行了相应的计算与分析。实际应用表明:所提出的总体施工方案能够保证施工安全和质量,组合梁在顶推过程中的性能指标均满足要求。本文结果可为提高跨高速组合梁顶推施工的安全性、效率和质量提供一定的理论指导和实用价值。
In order to study the key technologies in the jacking construction process of composite beams across expressway,a general construction plan that can ensure construction accuracy and safety is proposed based on a single-span 60 m simply supported steel-concrete composite beam project and the main difficulties of jacking construction.The plan specifically includes construction technology,corection plan,construction process and steps,etc.By rationally optimizing the jacking process during the construction process,the stress conditions of the structural components under various key working conditions during the jacking construction are analyzed in detail.The strength,stffness and deformation problems that may occur during the jacking process of the composite beam are discussed in detail,and the corresponding calculations and analyses are carried out on the composite beams after completion.Practical application shows that the proposed overall construction plan can ensure construction safety and quality,and the performance indicators of the composite beam during the jacking process meet the requirements.The results can provide certain theoretical guidance and practical value for improving the safety,efficiency and quality of the jacking construction of composite beams across expressway.
作者
王雄
WANG Xiong(China Railway NO.5 Engineering Group Co.,Ltd.,Changsha 410200,Hunan,China)
出处
《工程建设》
2025年第2期48-55,共8页
Engineering Construction
关键词
顶推施工
跨高速组合梁
总体施工方案
受力分析
技术研究
jacking construction
composite beam across expressway
overall construction plan
force analysis
technical research
