大跨度连体钢桁架安装施工技术分析

Analysis on Installation and Construction Technology of Large-span Connected Steel Truss

介绍了利用塔吊安装大跨度钢桁架的施工方法,根据结构刚度形成原理优化吊装顺序,优先形成桁架中的“三角形”稳定结构单元,使大跨度钢桁架的受力更加合理,大幅提高施工过程中吊装的安全性,钢桁架自身可以作为安全的施工操作平台,避免发生垮塌等安全事故。

This paper introduces the construction method of installing large-span steel truss with tower crane,optimizes the hoisting sequence according to the formation principle of structural stiffness,and preferentially forms the“triangle”stable structural element in the truss,which makes the force of large-span steel truss more reasonable and greatly improves the safety of hoisting during construction.The steel truss itself can be used as a safe construction operation platform to avoid collapse and other safety accidents.