矩形顶管斜向出洞设计施工要点分析

Analysis on key design and construction points of rectangular pipe jacking oblique cave

矩形顶管通常为垂直出洞(即顶管轴线与工作井出洞侧墙基本成90°,一般不小于85°),而大角度斜向出洞罕有先例,本文通过一个大角度斜向出洞的案例分析此类情况下的设计施工要点。

Rectangular pipe jacking usually drives vertically out of tunnel,i.e.the angle of the pipe axis and side wall of work well to drive holes is 90°,generally not less than 85°.Driving obliquely holes with high angle to get out of the tunnel is rare in engineering.Through a large angle oblique hole case,key points of this kind of design and construction are analyzed.