摘要
杭州运河隧道下穿亲水平台结构,须对平台D轴11根立柱进行主动托换。亲水平台主动托换特点在于"柱—梁"、"梁—墙"两次力的转换。本文介绍了二次托换的设计原则、设计要点、施工过程、信息化施工控制。通过设计优化和施工实践验证,二次托换的关键在于荷载有效转换、变形主动控制、新旧混凝土可靠连接和实时信息化施工指导。
The Yunhe tunnel in Hangzhou province runs underneath a hydrophilic platform, therefore for safety concerns, active underpinning approach needs to be applied to the 11 columns of axe D. The approach takes effect by two force transfers in the process, namely column to beam, and beam to wall. The paper outlines the designing principles, key technologies, construction process and the digital construction monitoring of the secondary underpinning approach. It then improves the scheme via in-situ testings and the results indicate that the key technologies lies in the effective transfer of loading, the active control of deformation, reliable link between the old and the new concrete, as well as the real-time digital guidance to the construction process.
出处
《铁道建筑》
北大核心
2014年第4期71-74,共4页
Railway Engineering
关键词
超静定平台
主动托换
信息化施工
Hyper-static platform
Active underpinning
Digital construction
