公路隧道上跨水工隧洞节点设计关键技术研究

Research on Key Technology of Joint Design of Cross-hydraulic Tunnel on Highway Tunnel

以某分离式高速公路隧道上跨既有水工隧洞工程为例,结合类似项目设计经验,对大断面公路隧道上跨水工隧洞节点各关键环节进行设计,主要包括基底注浆设计、上跨节点防排水设计、上跨节点监测设计、施工组织设计等,对上跨水工隧洞节点设计要点及关键技术进行总结,给出上跨水工隧洞节点设计建议,为类似项目提供借鉴。

Based on the background of the upper span hydraulic tunnel project of a separated highway tunnel,through combining with the design experience of similar projects,the design and research of the key links of the upper span hydraulic tunnel joint in the large section highway tunnel are carried out.The design content mainly covers the base grouting design,the upper span node anti-drainage design,the upper span node monitoring design,and the construction organization design,etc.The design points and key technologies of the upper span hydraulic tunnel node are summarized,and the design suggestions of the upper span hydraulic tunnel node are given to provide reference for similar projects.