矮塔斜拉桥施工关键项目的控制分析研究

该文在阐述斜拉桥施工控制理论及方法的基础上,依托南屏矮塔斜拉桥的施工过程,制定了施工监控方案并实施了施工监控,同时建立了有限元模型对整个施工过程进行分析,最终实现了应力和线形双控目标。针对南屏大桥的高程、应力、索力以及线形进行了监测,确保施工过程中结构处于最优状态,保证施工安全,确保成桥阶段的内力状态和线形状态达到设计要求。

Study on Construction Control over Critical Item of Extradosed Cable-stayed Bridge

On the basis of the control theory and method of cable-stayed bridge construction, and combined with the construction process of Nanping ex- tradosed cable-stayed bridge, the construction control method and construction monitoring are established and the finite element simulation is also estab- lished to analyze the whole construction process. The stress and linear control targets are obtained ultimately. The elevation, stress, cable force and linear of Nanping bridge are monitored to ensure the structure in best condition during construction and the safety as well as the internal force and linear state in good condition.