中外公路2026，Vol.46Issue(3)：184-193,10.DOI:10.14048/j.issn.1671-2579.2026.03.020
基于非线性分析的顶推计算方法研究
Study on Calculation Method for Incremental Launching Based on Nonlinear Analysis
摘要
Abstract
In view of the shortcomings of traditional incremental launching calculation methods and the assembly construction control of incremental launching beams,an incremental launching calculation method based on nonlinear analysis was proposed in this paper.This method could truly simulate the running state where the incremental launching pier remains stationary,and the beam moves forward.The assembly alignment of all segments of the beam and the real alignment of the beam under specified working conditions could be directly output.The prefabricated alignment of the main beam(i.e.,unstressed alignment)did not need to be consistent with the slide alignment.When the two were inconsistent,the main beam could automatically adapt to the slide alignment without manual intervention.The whole-process finite element modeling and calculation were carried out for the background project.The calculation results indicate that the method can directly output the accurate theoretical assembly alignment of the beam.The reaction force state of the incremental launching pier is associated with the stress state of the main beam,and the elevation adjustment of the top surface of each pier only affects the reaction forces of the current pier and adjacent piers.The slide alignment can be preliminarily formulated as the bridge design alignment,and optimizing the slide alignment according to the reaction forces of piers and the stress variation curves of the beam can meet the requirements of incremental launching control.关键词
顶推施工/非线性计算/无应力线形/拼装线形/滑道线形优化Key words
incremental launching construction/nonlinear calculation/unstressed alignment/assembly alignment/slide alignment optimization分类
交通工程引用本文复制引用
莫山峰,黄才良,覃晖..基于非线性分析的顶推计算方法研究[J].中外公路,2026,46(3):184-193,10.基金项目
辽宁省中央引导地方科技发展资金资助项目(编号:2023JH6/100100054) （编号:2023JH6/100100054）
