测试技术学报2024，Vol.38Issue(3)：230-239,10.DOI:10.3969/j.issn.1671-7449.2024044
大跨度复杂竖曲线钢梁顶推控制关键技术
Key Technology of Jacking Control for Large-Span Complex Vertical Curve Steel Beam
王海南 1楚民红 2阙水杰2
作者信息
- 1. 中铁开发投资集团有限公司,云南 昆明 650599
- 2. 中铁桥隧技术有限公司,江苏 南京 210061
- 折叠
摘要
Abstract
Taking the Fenghuangling Bridge in Liuzhou as the background,with the characteristics of large top pushing span and complex steel beam curves,this paper introduces the key technologies in the steel beam top pushing process of Fenghuangling Bridge,including top pushing control,preassembly of steel beams and bridge position assembly,adjustment of anchor cables during top pushing process,and overall drop of beams in place during top pushing.During the process of pushing the steel beam,the rela-tive elevation of each support point and the tension of the anchor cable are adjusted to control the param-eters such as the reaction force of each support pier and the structural stress of the steel beam guide beam.The method of"alternating dropping the beam from the pier to the top support line"is adopted to smoothly lower the steel beam from the height of the pushing support line to the design elevation.The Fenghuangling Bridge in Liuzhou has achieved good control of steel beam launching,which has great refer-ence significance for the construction of similar bridges.关键词
钢梁顶推/导梁上墩/支撑反力/索力调整/整体落梁Key words
steel beam pushing/upper pier of guide beam/bearing reaction/tension adjustment/overall fall beam分类
交通工程引用本文复制引用
王海南,楚民红,阙水杰..大跨度复杂竖曲线钢梁顶推控制关键技术[J].测试技术学报,2024,38(3):230-239,10.
