一种浅埋暗挖隧道穿越箱涵的施工方法

Construction method for shallow depth bored tunnel to penetrate through box culvert

Abstract

The invention discloses a construction method for a shallow depth bored tunnel to penetrate through a box culvert. The method comprises the following steps of construction preparation, construction of a preparation section, determination of the size of a box culvert section, construction of a sagging transitional section, construction of the box culvert section, construction of an upward-tilting transitional section, construction of an ending section, inspection of the supporting strength, and restoration of normal excavation of the constructed tunnel. The transition sections of the tunnel are short, the bottom of the tunnel is unchanged in excavation depth, only the shape of the section of the tunnel is changed, the influence of the existing box culvert on tunnel construction is ingeniously avoided, and the construction progress is guaranteed on the premise that the construction safety is guaranteed.
本发明公开了一种浅埋暗挖隧道穿越箱涵的施工方法,该方法包括以下步骤:步骤一、施工准备;步骤二、准备段施工;步骤三、确定箱涵段的尺寸;步骤四、下垂过渡段施工;步骤五、箱涵段施工;步骤六、上挑过渡段施工;步骤七、收尾段施工;步骤八、检验支护强度;步骤九、恢复所施工隧道的正常开挖。本发明隧道变化阶段较短,而且隧道底部的开挖深度不变,仅仅改变隧道的截面形状,巧妙的避开了现有箱涵对隧道施工的影响,在保证施工安全的前提下,保证施工进度。

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