预应力钢支撑新型活络端结构特点与施工技术

Study on Construction Technology and Structural Characteristics of Prestressed Steel Bracing with New Movable End

针对深基坑开挖时钢支撑预应力损失较大,围护结构变形较大的问题,介绍了一种预应力钢支撑新型保载活络头结构,总结预应力钢支撑施工关键技术和质量控制措施。工程应用结果表明,新型保载活络头结构可有效降低预应力损失,较好地保护了周边复杂的环境。

Aiming at the problems of large prestress loss of steel support and large deformation of retaining structure during deep foundation pit excavation,this paper introduces a new load retaining flexible head structure of prestressed steel support,and summarizes the key technology and quality control measures of prestressed steel support construction.The engineering application results show that the new load retaining flexible head structure can effectively reduce the prestress loss and better protect the surrounding complex environment,so as to provide reference for similar projects.