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茅安前大桥 30× 3+ 6 0 + 30× 3(m) ,主跨为 6 0m预应力混凝土系杆拱 ,采用分批吊装预制构件、分批施加预应力的安装方案施工。介绍了本桥在安装施工中的预制分段、分批加载安装过程和施工要点。
The main span of the Qian’an Qian Bridge is 30 × 3 + 60 × 30 × 3 (m). The main span is 60m of prestressed concrete tied arch. Construction is carried out by prefabricated batches of prefabricated batches and prestressed installations in batches. The prefabricated section of this bridge in the installation and construction, batch loading and installation process and construction essentials are introduced.