嘉绍大桥地处钱塘江河口尖山河段,属世界三大强涌潮水域之一,且水域含有大量氯盐,墩柱用混凝土需具有优良的抗冲磨及抗氯离子渗透性能。在系统研究胶凝材料类型及纤维对混凝土的力学性能、抗冲磨性能及氯离子扩散系数影响的基础上,优选出嘉绍大桥墩身混凝土的配制方案,同时对施工质量进行控制,以保证墩柱结构在挟砂水流冲磨及海洋氯盐环境下的耐久性。 Jiashao Bridge is located in the Jianshan reach of the Qiantang River estuary. It belongs to one of the three major gully surges in the world. Its water area contains a large amount of chloride salts. Concrete for piers and pillars is required to have excellent anti-abrasion and anti-chloride ion permeability. On the basis of systematically studying the types of cementitious materials and the influence of fibers on the mechanical properties, abrasion resistance and chloride diffusion coefficient of concrete, the preparation scheme of pier concrete in Jia Shao Bridge was optimized and the construction quality was controlled at the same time Durability of pier structure in sand-scouring and marine chlor-salt environment.