华东交通大学学报2023，Vol.40Issue(6)：54-61,8.
连续刚构桥边跨现浇段及合龙段一次性施工方法研究
Research on One-Time Construction Method of Cast-in-Place Section and Merging Section of Side Span of Continuous Rigid-Frame Bridge
伍海山 1刘凤帅 2曹国军3
作者信息
- 1. 华东交通大学土木建筑学院,江西 南昌 330013
- 2. 江西省机电设备招标有限公司,江西 南昌 330046
- 3. 中铁二十三局集团第四工程有限公司,四川 成都 610031
- 折叠
摘要
Abstract
With the background of the Fujiang Bridge project,which is a prestressed concrete continuous rigid-frame bridge,a construction method for one-time pouring of edge span linear section and closure section using a hanging basket is proposed for edge span linear section construction under complex terrain.The feasibility of the hanging basket method is analyzed using structural mechanics theory and MIDAS CIVIL finite element software,focusing on the main beam deflection,hanging basket structural safety,and internal forces of girder.The study shows that the one-time pouring of edge span linear section and closure section using a hanging basket has mi-nor inpact on the mid-span side box girder internal forces and deflection after bridge completion,but has a cer-tain influence on the vertical deformation of the edge span girder.Therefore,the pre-camber values of the box girder need to be adjusted timely during construction.Compared with traditional construction scheme,the maxi-mum increase in the compressive stress on the worst section of the main beam after completion is 15%,which is within reasonable and controllable range.Considering the safety of the hanging basket,it can meet the safety re-quirements during construction by using optimization methods such as adding front and rear suspension rods.The results show that the one-time pouring of edge span linear section and closure section using a hanging basket is feasible,and this new construction method has been successfully applied in the construction of the Fujiang Bridge.关键词
连续刚构桥/挂篮浇筑边跨直线段/桥梁施工监控/挂篮法/有限元法Key words
continuous rigid-frame bridge/one-time pouring of edge span linear section with hanging basket/bridge construction monitoring/hanging basket method/finite element method分类
交通工程引用本文复制引用
伍海山,刘凤帅,曹国军..连续刚构桥边跨现浇段及合龙段一次性施工方法研究[J].华东交通大学学报,2023,40(6):54-61,8.
