BIM技术辅助高压线下预制箱梁桥架设技术研究

Study on Technology of Precast Box Girder Erection Under High Voltage Line Based on BIM Technology

城市道路桥梁施工,有时候不可避免地要下穿高压输电线路架设箱梁。高压线是工农业生活的重要保障,迁移、升塔等往往手续多、周期长,对施工工期有较大影响。针对在高压线下的受限空间内架设预制箱梁的施工场景,应用三维激光扫描技术获取高压线环境信息,基于BIM模型进行数据量测、方案设计、模拟验证和可视化交底,比传统的施工方式更准确,可视化的表达效果更清晰,提高了整体施工决策的安全和效率,保障了下穿高压线架设预制箱梁工期。

During the construction of urban roads and bridges,sometimes it is inevitable to erect box girders through high-voltage transmission lines.High-voltage lines are important guarantee for industrial and agricultural life.That many procedures and long periods of relocation and tower lifting have great impact on the construction period.When prefabricated box girder is erected in the confined space under high-voltage line,3D laser scanning technology will assist to obtain information.The data measurement,scheme design,simulation verification and visual disclosure are carried out based on BIM model.It is more accurate than the traditional construction method and the visual expression is clearer,which improve the safety and efficiency of the overall construction decision and ensure the construction period.