高原严寒薄壁高墩混凝土施工技术

Concrete Construction Technology for Feather-walled High Pier in Cold Plateau Region

结合工程实际,论述了高原地带薄壁高墩混凝土的施工技术。在严寒、多风的恶劣气候环境下,采用了正交设计方法进行混凝土配合比设计;采用预热骨料、水及加热蓄热综合养护技术及低温混凝土施工温度控制技术,确保了空心薄壁高墩混凝土施工质量。

Sanchahe large bridge in Qinghai-Tibet railway is located at an altitude of 3700m, with pier as high as 54.1m. Under the bad conditions of a chilly and windy climate, temperature controlling technologies in concrete construction and synthetic curing technologies such as steam heating and greenhouse heat preservation are adopted in order to insure the quality of hollow feather-walled high pier.