用于隧道洞口的桩式复合管棚套拱结构及其施工方法技术

本发明专利技术公开了一种用于隧道洞口的桩式复合管棚套拱结构及其施工方法，该桩式复合管棚套拱结构包括位于隧道洞口顶部的管棚套拱和位于隧道洞口两侧的预加固桩，管棚套拱的两端分别与两侧的预加固桩相连接，且该管棚套拱由预加固桩支承。本发明专利技术的施工方法为：先在隧道洞口两侧开挖、浇注预加固桩，并在桩内预埋连接套管；然后开挖管棚套拱断面，并保留开挖断面的核心土；再在预加固桩的连接套管中插入连接钢筋；最后浇注管棚套拱，使管棚套拱与预加固桩固接成一整体，同时在该管棚套拱内预留管棚套管，在管棚套管内设置长管棚，施工完成。本发明专利技术的桩式复合管棚套拱结构更加稳定，力学性能较好，能有效防止隧道洞口坍塌和边、仰坡滑移。?

Pile type composite pipe shed arch structure for tunnel opening and construction method thereof

The invention discloses a method for tunnel pile composite pipe roof arch structure and its construction method, including pipe shed is located in both sides of the tunnel entrance is located in the pre arch and tunnel entrance at the top of the pile reinforcement pile composite pipe roof arch structure, pipe roof arch and ends on both sides of the pre reinforced pile connected, and the pipe roof arch pre reinforced pile supported by. The construction method of the invention is as follows: first, on both sides of the tunnel entrance excavation pouring pre reinforcement pile, and the pile embedded in the connecting sleeve; and the excavation of pipe roof arch section, and retain the core soil excavation section; reinforcement pile connection sleeve is inserted into the connecting bar in pre; finally pouring pipe roof arch. The pipe roof arch and pre reinforced pile is fixedly connected into a whole, while the pipe roof arch reserved pipe roof casing, long pipe shed is arranged in the casing pipe shed, the completion of construction. The pile type composite pipe canopy arch structure of the invention is more stable and has better mechanical performance, and can effectively prevent the collapse of the tunnel entrance and the slip of the side and the slope. ?

【技术实现步骤摘要】

【技术保护点】
一种用于隧道洞口的桩式复合管棚套拱结构，其特征在于：所述桩式复合管棚套拱结构包括位于隧道洞口顶部的管棚套拱和位于隧道洞口两侧的预加固桩，所述管棚套拱的两端分别与两侧的预加固桩相连接，且该管棚套拱由预加固桩支承。

【技术特征摘要】

【专利技术属性】
技术研发人员：蒋正华，易震宇，傅立新，刘正刚，张进华，刘永胜，李箐，王明明，施成华，李林林，侯兴杰，
申请(专利权)人：湖南省交通规划勘察设计院，
类型：发明
国别省市：43