悬臂现浇预应力混凝土连续梁桥合拢段施工技术与工艺计算

Construction Technology and Process Calculation of Closure Section in Cantilever Cast-in-Place Prestressed Concrete Continuous Girder Bridge

摘要: 随着大跨径桥梁的不断增加，施工难度也在不断增大，施工技术也在不断发展。其中桥梁合拢施工技术是成桥的关键所在。本文结合杭州湾北接线嘉善高架桥工程施工实例，对桥梁主桥合拢段的施工数据监测和施工技术进行探讨，通过对施工方案的计算及影响施工的相关因素分析，提出了悬臂浇筑预应力混凝土连续梁桥的桥梁合拢段施工注意要点，为类似桥梁合拢段施工提供有益参考。

Abstract: With the increase of long-span bridges, the difficulty of construction is also increasing and the construction technology is constantly evolving. Construction techniques of closure segment are the key to the successful completion. This paper studies data monitoring and construction technology for construction of main bridge closure segment in combination with the instance of Jiashan viaduct which belongs to Hangzhou Bay North Connection Project. Based on the calculation of the construction scheme and the analysis of relevant factors influencing the construction, the con-struction attention of the long-span PC continuous beam bridge closure segment by Cantilever Casting is put forward, which can provide a useful reference for the construction of similar bridge closure segment.