新型承重支撑体系在北京大兴国际机场南航机库屋盖施工中的应用

Application of New Load-bearing Support System in Roof Construction of China Southern Airline Hangar at Beijing Daxing International Airport

传统的格构式支撑因外形尺寸固定,存在使用受限、周转率低等不利因素。基于此,将常用于基坑支护的定型土工支撑,通过横向连接、竖向接长后,组成新型的承重支撑。介绍了该新型承重支撑体系的原理及其在大型空间钢结构施工中的应用。实践表明,由土工支撑组成的临时承重支撑可以弥补格构式钢管支撑的不足,适用性强、拆装灵活,为承重支撑体系的应用增加了一个选择。

Due to its fixed external dimensions,the traditional lattice support has several disadvantages,such as limited use,low turnover rate,etc.Base on this,a new type of load-bearing support has been developed through horizontal connection and vertical extension of the customized geotechnical support which is commonly used as foundation pit support.This paper introduces the principle of the new load-bearing support system and its application in the construction of large space steel structure.The practice shows that the temporary load-bearing support composed of geotechnical support can make up for the deficiency of lattice steel pipe support,which becomes an additional application option of load-bearing support system for its strong applicability and flexible disassembly and assembly features.