Deviation error control method for main tower of suspension bridge

• Main Authors: CHEN BIN, HU XINYIN, LIU HAIMING, XIONG SHAOHUI, CHENG JUNWEI, WANG YAN, QIAN FENG, GAO CHAOJUN
• Format: Patent
• Language: Chinese; English
• Published: 19.10.2021
• Subjects: ASSEMBLY OF BRIDGES; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; FIXED CONSTRUCTIONS; OR VIADUCTS

The invention discloses a deviation error control method for a main tower of a suspension bridge, which belongs to the technical field of bridge construction. The method comprises the following steps of: after a catwalk is changed and a cable crane is mounted, applying a counterweight load on a catwalk construction platform to ensure that under the combined action of catwalk load, cable crane load and counterweight load, the unbalanced horizontal force F of the tower top is equal to 0 and the deviation error delta L of the main tower is equal to 0, and dismantling the counter weight, the cable crane and the catwalk are after the bridge is formed. By the adoption of the control method, the deviation error of the main tower in the finished bridge state can be controlled, and the construction quality of the bridge is guaranteed. 本发明公开了一种悬索桥主塔偏位误差控制方法，属于桥梁建设技术领域，在猫道改挂、缆载吊机安装完成后，通过在猫道施工平台上施加配重载荷，确保在猫道荷载、缆载吊机荷载和配重荷载共同作用下塔顶不平衡水平力F＝0，主塔偏位误差ΔL＝0，成桥后再对配重物、缆载吊机和猫道进行拆除。采用本发明控制方法，可以控制主塔在成桥状态下的偏位误差，保证桥梁的施工质量。