无外支撑立模新技术的研究与应用

Study and Application of Erecting Formworks without Outside Supporting

水电工程的高空现浇T型钢筋混凝土大梁是一项难度很大的施工技术．贵港航运枢纽工程在安装问坝顶跨孔的T4、T5梁施工中，采用了无外支撑立模的施工新技术，实现了快速、高效施工．文中论述了无外支撑立模的原理、结构设计和现场施工方法，对今后类似的钢筋混凝土大粱施工具有参考价值．

High-altitude casting-in-situ reinforced concrete T-shaped girder is a problem in the course ofhydroelectric construction. The new technique of erecting formworks without outside supporting was applied toT4 and T5 girder construction on the top of the assembly-bay of Guigang Navigation Project, and was proved tobe highly effective. The theory, the structure design and the on-the-spot construction methods are presentedhere and will be of referential value to the similar sort of reinforced concrete girder construction.