摘要:复杂异形拱桥拱肋的空间姿态控制是保证工程质量的关键问题之一，对其设计图纸参数、实际施工中的各点位坐标的校核是保障施工质量的前提。本文针对以上问题，引入BIM技术与数学建模，提出了一种复杂空间异形钢拱桥拱肋的校核方法。文章首先完成了对钢拱肋设计图纸拱轴线节点坐标的数学建模校核，在此基础上以Tekla软件建模辅助校核拱段尺寸，然后对施工中拱段监测点坐标进行了数学建模校核，最后在Tekla中模拟施工，建立实际工程模型，拟合实际拱轴线分析整体误差。同时本文将该方法应用于武汉某大桥，证实了该校核方法的实际可行性。

Abstract: The spatial attitude control of the arch ribs of the complex shaped arch bridge is one of the key issues to ensure the quality of the project. The verification of the design drawing parameters and the coordinates of each point in the actual construction is the prerequisite to ensure the construction quality. Aiming at the above problems, this paper introduces BIM technology and mathematical modeling and proposes a method for checking the arch ribs of a complex space special-shaped steel arch bridge. The paper firstly completes the mathematical modeling and verification of the arch axis node coordinates of the steel arch rib design drawings and uses Tekla modeling to assist in the verification of the arch size. Then the coordinates of the monitoring points of the arch section during the construction were checked by mathematical modeling, and finally simulates the construction in Tekla, establishes the actual engineering model, and analyzes the overall error by fitting the actual arch axis. At the same time, this method was applied to a bridge in Wuhan, which proves the practical feasibility of the verification method.