某斜拉桥主梁施工预拱度的设置及主梁线形控制

Construction Camber Setting and Girder's Linear Control of a Cable Stayed Bridge

以新密市溱水路斜拉桥为工程实例,通过建立有限元模型,进行主梁支架施工预拱度的数值模拟和理论分析。结果表明:预拱度计算值与实测值的误差较小,且按此预拱度施工,主梁线形合理,工程效果良好,对类似桥梁预拱度的设计以及施工监测具有一定的指导意义。

The construction camber setting and the girder＇s liner control of a cable stayed bridge have been studied. Based on the cable stayed bridge on Zhenshui Road in Xinmi City, the numerical simulation and theoretical analysis of the girder bracket construction camber have been carried out through setting up finite element model. Results show that error between the calculated values and the measured ones of camber is small, and construction based on this camber will have reasonable linear girder so as to obtain desirable engineering effects, which will offer some guidance to the design and construction monitoring of bridge camber of similar kind.