某酒店宴会大厅大跨度超高预应力梁施工技术

多功能大型酒店工程的宴会大厅、大堂等部位为达到空间美感的要求,采用了大跨度超高预应力框架结构设计,综合施工难度大。超高大跨模板支撑体系采用碗扣式钢管脚手架满堂布置,采用后张有粘结预应力梁,预应力筋采用人工穿束和两端张拉法,选用合理的张拉设备,采取了具有针对性的预应力张拉措施,保证了工程质量。

CONSTRUCTION TECHNIQUE FOR LARGE-SPAN SUPERHIGH PRESTRESSED BEAM OF A BANQUET HALL

In order to satisfy spatial aesthetic requirements, important parts of a large muhifunctional hotel, such as banquet hall and lobby, etc., adopt large-span superhigh prestressed frame structure, which has great difficulty in general construction. Large-span superhigh formwork supporting system adopts full hall cuplok steel pipe scaffold and post-tensioning prestressed beam with bond. Manual binding and bidirectional tensioning method are adopted for construction of the prestressed steel bar. Appropriate tensioning equipments are used and special prestressing and tensioning measures are established to ensure the engineering quality.