摘要
结合襄樊汉江三桥主墩大体积承台施工,分析了大体积承台施工技术,包括:钢板桩围堰施工,水下混凝土封底。为防止大体积混凝土在水化过程中结构内部产生过高的水化热温度,致使结构产生有害裂缝,从混凝土原材料到混凝土浇筑施工采取了一系列有效的技术控制措施,包括低水化热混凝土配合比设计、混凝土温控计算、大体积混凝土温度现场控制措施,以及施工过程中的温度监测,从而使得承台施工得以顺利完成。
Based on the large volume pile cap construction of Hanjiang the Third Bridge main pier in Xiangfan,the construction technology of the large volume pile cap is analyzed.,including cofferdam construction of steel sheet pile,bottom sealing of underwater concrete.A series of measures from concrete raw material to concrete pouring are taked to prevent exorbitant hydration temperature in mass concrete causing concrete crack,including mix design of low hydration heat concrete,temperature control calculation of concrete,field temperature control measures of mass concrete,temperature monitoring during construction.Thus,pile cap construction is completed successfully.
出处
《施工技术》
CAS
北大核心
2011年第9期29-32,共4页
Construction Technology
关键词
桥墩
围堰
混凝土施工
温度控制
piers
cofferdams
concrete construction
temperature control
