大跨度斜腿刚构桥现浇技术临时支撑体系分析

Analysis of Scaffolding System for Large-span Rigid Frame Bridge

如何更好地利用钢管桩支架,来有效的控制在施工过程中的稳定,保证成桥后的受力状态与设计状态高度耦合,是刚构桥斜腿施工控制的重要内容.湖北省援建四川地震灾区的汉源县龙潭沟2#大桥主桥边跨斜腿箱梁施工采用钢管桩支架体系,通过Abaqus建立有限元模型,对刚构桥斜腿支架系统构件的强度、刚度和稳定性进行了计算和分析.

How to make better use of the scaffolding supported by steel pipe piles in order to effectively control its stability during construction process and to ensure a highly coupling between the construction and the design is of great significance;and that is an important part in construction control.The scaffolding system supported by steel pipe piles was used in the side span of main bridge #2 at Longtan Channel in Hanyuan County of Sichuan Province;the bridge was aided by Hubei province for the disaster area.By the FEM software ABAQUS,the intensity,stiffness and stability of this scaffolding system components were calculated and analyzed.