多支点平衡梁在吊装工程中的应用

Usage of Multi-support Balance Beam in Engineering

在检修大庆石化分公司炼油厂的2台5000m3原料水罐时,发现需更换原料水罐的上5圈壁板及罐顶,针对该罐体直径大、罐壁薄且刚度较小的情况,结合现场施工条件及工期要求,决定采用罐顶和5圈壁板按常规方法整体预制,然后整体吊装的施工方法。为保证罐体起吊受力的均衡性,特设计了多支点平衡梁,通过受力分析和实际应用,在吊装中采用多支点平衡梁,可使构件保持平衡,有效地解决了由于径向力带来的吊装罐体的尺寸变形超差,保证了施工质量,缩短了工期。

There are two 5 000 m3 water tanks needed to replace top five annuluses of wall and a roof in the refinery of Daqing Petrochemical Company. Aimed at the large tank diameter, thin tank wall and smaller stiffness, and associated with the site construction conditions and time limit of the project, the construction technique with integrated lifting was used after the conventional integrated prefabrication of the tank roof and top five annuluses of wall. In order to ensure the force balance during tank lifting, a special multi-support balance beam was designed. It has been proven through the force analysis and practical application that the multi-support balance beam enables structural components to keep balance and non-deformation, thus ensures construction quality and shortens time period of the project.