装配式张弦梁钢支撑在某深基坑工程中的应用

Application of Assembled Prestressed Beam String Steel Bracing System in a Deep Excavation Project

装配式张弦梁钢支撑是一种新型的组合钢结构内支撑系统,该系统在江西、江苏、福建等地已有较多成功应用案例。深圳某科技大厦基坑工程项目是该系统在深圳地区的首次应用。装配式张弦梁钢支撑系统,颠覆了传统的钢支撑体系,采用桁架结构结合张弦梁结构,主要具有以下特点:刚度大、形变小、安全性高、施工空间大。结合项目应用,提出了相应的施工要点,并在节点构造上提出了改进措施。

Assembled prestressed beam string steel bracing system is a new type of composite steel bracing system.There are many suc‐cessful applications of this system in Jiangxi,Jiangsu,Fujian and other places.The foundation pit project is the first application of this sys‐tem in Shenzhen.The system subverts the traditional steel support system and adopts truss structure combined with beam string structure.It mainly has the following characteristics:large stiffness,small deformation,high safety and large construction space.Combined with the proj‐ect application,the corresponding construction points are put forward,and the improvement measures on the node structure are put forward.