颗珠山大桥主塔施工抗风控制与关键技术

外海环境施工条件复杂,气象条件恶劣,尤其是须经历夏季台风和冬季季风的影响。如何在施工过程中保证模板系统在风力作用下的稳定性,保证裸塔施工期间施工正常进行,都是外海大跨度桥梁面临的问题。该文针对颗珠山大桥的主塔施工过程中抗风控制及其关键技术研究进行了详细介绍。颗珠山大桥主塔施工的成功实践为我国在外海环境下建桥及海上斜拉桥的施工提供了经验积累。

Anti-wind Control and Key Technique in Construction of Main Pylon for Kezhushan Bridge

The construction conditions of the outer-sea environment is complicated, the meteorology condition is bad, especially, must be withstand by the influence of the summer typhoon and the winter monsoon. How to guarantee the stabilization of the formwork system under the action of the wind force and to guarantee the normal operation of the exposed pylon in the course of construction are the problems to be met in the outer-sea large-span bridge. In view of the anti-wind control and the key technical study in the course of the construction of the main pylon, the article carries out the detail introduction. The successful practice in the construction of the main pylon for Kezhushan Bridge provides the experience accumulation for building a bridge in the outer-sea environment and for constructing a cable-stayed bridge on sea in China.