Subway open-cut fabricated tunnel structure and assembly method thereof: Fid-Bau Portal

Subway open-cut fabricated tunnel structure and assembly method thereof

ZHANG HUAJUN / CHEN GANG / YANG FAN / YUAN TONGYI

The invention discloses a subway open-cut fabricated tunnel structure. The head end and the tail end of each tunnel structure are both arranged in a beveling shape, the tunnel structures are arrangedon foundation structures, and limiting walls are poured at the joints between the tunnel structures; preformed holes communicating with the upper end and the lower end of each tunnel mechanism are dugin the wall body at the beveling plane of the head end and the tail end of each tunnel structure; and a fixed steel structure is installed at the joint between the tunnel structures. The invention further discloses an assembly method of the subway open-cut assembly type tunnel, the method comprises the following steps that (1), pretreatment engineering is carried out, wherein the foundation structures, the tunnel structures and the fixed steel structures are poured and produced; (2), the tunnel structures are assembled, specifically the head ends and the tail ends of the tunnel structures arein butt joint in sequence; and (3), the fixed steel structures are assembled, specifically the fixed steel structures are fixed at the joints of the tunnel structures. The subway open-cut fabricatedtunnel structure has the beneficial effects that high assembling and splicing stability of the tunnel structures is guaranteed, and underground water infiltration or subsequent complete treatment after infiltration is prevented.

本发明公开了一种地铁明挖装配式隧道结构，各组隧道结构的首端、尾端均呈斜切状设置，隧道结构布置于地基结构之上且连接处浇注有限位墙体；隧道结构的首端、尾端的斜切面处的墙体上挖设有连通隧道机构上下两端的预留孔；对接后的隧道结构接口处安装固定钢结构；还公开了一种地铁明挖装配式隧道装配方法，具有如下步骤：(1)预处理工程，对地基结构、隧道结构、固定钢结构进行浇注和生产；(2)隧道结构的装配，将各组隧道结构的首端、尾端顺序对接；(3)固定钢结构的装配，将固定钢结构固定在各组隧道结构的接口处。本发明具有保证隧道结构装配拼接稳定性强、防止地下水内渗或内渗后的后续处理完备的有益效果。

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