基于BIM模拟128 m铁路钢桁梁原位拼装技术研究

Research on In-Situ Assembly Technology of 128 m Railway Steel Truss Girder Based on BIM Simulation

以蒙华铁路湖南段京广铁路特大桥跨通海路128 m简支钢桁梁拼装为研究对象,阐述利用BIM技术模拟钢桁梁支架原位拼装施工方法。建立钢桁梁桥整体BIM模型,进行各部件间碰撞检查,提高加工制作效率,降低返工风险;建立钢桁梁桥原位拼装支架体系和起重龙门吊BIM模型,利用BIM技术进行场地优化布置,并对施工方案进行优化,确保施工安全;模拟钢桁梁拼装BIM技术的应用,实现了钢桁梁杆件精确加工和精准安装目标,保证了拼装质量和工期、提升了企业核心竞争力、取得了良好的经济和社会效益。

The research object is the assembly of 128 m simply-supported steel truss girder across Tonghai Road of Beijing-Guangzhou railway bridge in Hunan section of Menghua Railway.In this paper,the method of in-situ assembling construction of steel truss girder by BIM technology is described.The whole BIM model of steel truss girder bridge is established to carry out collision inspection between parts,improve the working efficiency of processing and reduce the risk of rework.The in-situ assembly support system of steel truss girder bridge and the BIM model of lifting gantry crane are established to optimize the site layout by using BIM technology,and the construction scheme is optimized to ensure the construction safety.The application of BIM technology to simulate assembled steel truss girder achieves the goal of accurate processing and installation of steel truss girder members,ensures the assembled quality and construction period,improves the core competitiveness of enterprises,and achieves good economic and social benefits.