BIM技术在异形钢结构桥梁施工中的应用方法研究——以白马湖大桥为例

本文以淮安白马湖大桥为载体，开展了BIM技术在复杂异形钢结构桥梁施工中的应用探索，将BIM技术与钢结构桥梁深化设计、加工制造及现场施工各阶段进行了深度融合。深化设计阶段，采用三维坐标法结合Tekla软件实现空间异形钢拱结构快速精准建模，同时基于CATIA软件进行曲板加工图的高效绘制。加工制造阶段，采用数字化加工技术进行零件的切割，有效减少现场环口数量约57%；研发具有项目特色的“一板一胎”技术，将曲板制造精度控制在2mm内。现场施工阶段，优化原定“先拱后梁”施工方案，提出“先拱后梁”方案；建立白马湖工程项目建设管理系统，以BIM技术指导项目精细化管理实现项目管理实时、动态及全面管控，达到精细化管理的目标。

BIM Technology in Special Steel Bridge-Take Baima Lake Bridge

Taking Huaian Baima Lake Bridge as the object, this paper carries out the implementation of BIM technology in the construction of complex heterogeneous steel structure bridge. Meanwhile, BIM technology is deeply integrated with the deepening design, processing and manufacturing, and site construction of steel structure bridge in this paper. In the deepening design stage, 3D coordinate method and Tekla software are adopted to realize the rapid and accurate modeling of space special-shaped steel arch structure, and its efficient drawing is made based on CATIA software. In the processing and manufacturing stage, digital processing technology is used to cut parts, effectively reducing the number of field openings by about 57%; "one plate, one tire" technology with project characteristics is developed for controlling the manufacturing accuracy of curved plate within 2mm. In the site construction stage, this paper proposes optimizing the original construction scheme of "arch before beam", which saves 6.081 million CNY in installation and demolition costs. Constructing management system of Baima Lake project is established at this stage to achieve the real-time, dynamic and comprehensive control of project management and achieve the goal of fine management.