秦淮河大桥异形系杆拱桥梁拱分离式拖拉施工技术及监控分析  

Construction Technology of Beam and Arch Separated Dragging and Monitoring Analysis for Qinhuai River Special-shaped Tied-arch Bridge

作　　者：梁桥 胡志涵 王静峰[2,3] 王翰斓 LIANG Qiao;HU Zhihan;WANG Jingfeng;WANG Hanlan(The Second Construction Co.,Ltd.of CTCE Group,Suzhou,Jiangsu 215131,China;College of Civil Engineering,Hefei University of Technology,Hefei,Anhui 230009,China;Anhui Advanced Steel Structure Technology and Industrialization Center,Hefei,Anhui 230009,China)

机构地区：[1]中铁四局集团第二工程有限公司,江苏苏州215131 [2]合肥工业大学土木与水利工程学院,安徽合肥230009 [3]安徽省先进钢结构技术与产业化协同创新中心,安徽合肥230009

出　　处：《施工技术（中英文）》2021年第24期132-138,共7页Construction Technology

基　　金：教育部新世纪优秀人才支持计划(NCET-12-0838)。

摘　　要：跨外秦淮河大桥全长157m、宽45m,桥梁主体采用多索面异形系杆拱桥结构。根据秦淮河大桥工程特点,分析主梁在施工中的重难点,提出梁拱分离式拖拉施工技术,并采用Midas Civil软件对桥梁拖拉施工全过程进行仿真模拟。根据数值结果,合理确定监测点布置方案,分析拖拉过程中的桥体轴偏、支架变形,滑道梁、临时墩及主梁受力情况。研究表明监测结果与模拟结果吻合良好,可有效保证施工安全,梁拱分离式拖拉施工技术适用于跨外秦淮河大桥主梁施工。The Qinhuai River Bridge has a length of 157 m and a width of 45 m. The bridge adopts the structure of under-bearing special-shaped arch bridge of spatial multi cable plan. According to the engineering characteristics of the bridge, this paper analyzed the heavy and difficult points in the construction of the main beam and put forward a new construction technology named separated dragging of beam and arch. Midas Civil was used to simulate the whole process of bridge dragging construction. According to the simulation results, the positions of the monitoring points were reasonably determined, and the axle deviation, support deformation, the stress conditions of slide beam, temporary piers and main beam were recorded during the dragging process. The monitoring results were compared with the simulation results. The research shows that the monitoring results are in good agreement with the simulation results, which can effectively ensure the construction safety. The construction technology of separated dragging of beam and arch is suitable for the main beam construction.

关 键 词：桥梁工程 异形系杆拱桥 梁拱分离式拖拉 监测 模拟 施工技术 

分 类 号：TU391[建筑科学—结构工程]