斜拉悬臂支架在大悬臂盖梁中的施工技术研究

Research on Construction Technology of Cable-stayed Cantilever Bracket in Large Cantilever Cap Beam

在桥梁工程中,随着设计的优化,普通的盖梁结构已经无法满足实际工程的需要,因此大悬臂预应力盖梁的设计及时解决了这一需求。相比于普通盖梁的施工,大悬臂盖梁发展出了一种无基础的斜拉悬臂支架施工方式,这种施工方式解决了因地基差,盖梁高程高,采取从地面搭设支架风险高,不经济等问题。通过这种斜拉悬臂支架大大减少了整个临时结构的支架用量,同时还保证了施工质量。

In bridge engineering,with the optimization of design,ordinary cap beam structures are no longer able to meet the needs of practical engineering.Therefore,the design of large cantilever prestressed cap beams has timely addressed this demand.Compared to the con-struction of ordinary capping beams,large cantilever capping beams have developed a non foundation cable-stayed cantilever support construc-tion method.This construction method solves the problems of high risk and uneconomical installation of supports from the ground due to the difference in ground foundation and high elevation of capping beams.By using this cable-stayed cantilever support,the amount of support used for the entire temporary structure is greatly reduced,while also ensuring construction quality.