轻型模板在铁路隧道斜切式洞门中的应用

Light Template Applied in Brim Chamfered Type Portal Part of Railway Tunnel

随着铁路时速的提升,为降低及缓解列车在隧道内运行时产生的空气动力学效应,越来越多的隧道均需要设置帽檐斜切式缓冲结构作为洞门。但帽檐斜切式洞门施工技术复杂,立模定位困难,施工难度大。本文结合工程实例,详细阐述了帽檐斜切式洞门的施工技术,并提出采用竹胶板等轻型材料施工斜切式洞门的可行性。

With the upgrading of the railway speed,more and more tunnels are needed to set brim chamfered type portal part as buffer structure in order to reduce and mitigate the aerodynamic effect generated by trains running in a tunnel. But the construction technique is complex. It＇s difficult to locate formwork and construct. This paper,combined with the engineering example,described in detail the construction technique of brim chamfered type portal part,and put forward the feasibility that light materials such as bamboo plywood used in the construction of chamfered type portal part.