线形控制是对桥梁施工中的重要环节及过程进行线形监测与控制,保证施工过程中桥梁的安全性和稳定性处于控制之中,并且使成桥后桥梁的线形和内力满足设计要求。通过蒲山特大桥的施工监控实践,详细介绍了变截面钢管混凝土桁架拱桥线形控制的原则、方法和效果。 Linear control is to monitor and control the important links and processes in the construction of the bridge linearly to ensure that the safety and stability of the bridge during construction are under control and that the linear and internal forces of the bridge after bridge construction meet the design requirements. Through the construction monitoring practice of Pu Shan Grand Bridge, the principle, method and effect of linear control of CFST truss bridge with variable section are introduced in detail.