高速公路箱梁整体式液压外模施工技术探究

Research on the Construction Technology of Integral Hydraulic External Formwork for Expressway Box Girder

随着我国公路行业的飞速发展,预制箱梁在桥梁建设中得到了越来越广泛的应用。应用传统的箱梁预制模板施工工艺,模板难以拆卸,工人的劳动强度大,装配时间长,在倒运过程中极为危险。箱梁整体式液压外模刚性大,变形小,模板节段少,接缝少,一次成型即可重复使用,大大提高了梁板的预制质量,加快了箱体的预制速度,而且具有安全性、经济效益显著等优点。论文结合京藏高速公路改扩建银川过境段第JZ15合同段项目的工艺优化和经验总结,对箱梁整体式液压模板施工技术进行了分析和研究。

With the rapid development of China's highway industry,precast box girder has been more and more widely used in bridge construction.The application of the traditional box girder precast formwork construction technology,the formwork is difficult to dismantle,the labor intensity of workers is great,the assembly time is long,and it is extremely dangerous in the process of transportation.The integral hydraulic external formwork of box girder has high rigidity,small deformation,few formwork segments,few joints,and can be reused after one molding,which greatly improves the prefabrication quality of beams and slabs,accelerates the prefabrication speed of the box body,and has the advantages of safety,remarkable economic benefits and so on.Combined with the process optimization and experience summary of JZ15 contract section project of Yinchuan Transit Section of Beijing-Tibet Expressway reconstruction and expansion,the paper analyzes and studies the construction technology of integral hydraulic formwork for box girder.