Foundation pit supporting structure with tunnel on side wall of foundation pit: Fid-Bau Portal

Foundation pit supporting structure with tunnel on side wall of foundation pit

YE GANGNAN / CHEN SHIHAI

The invention provides a foundation pit supporting structure with a tunnel on the side wall of a foundation pit, the top construction ground of the foundation pit is fixedly connected with a fixing plate, the middle part of one end, extending into the foundation pit, of the fixing plate is provided with a traction groove penetrating through the end part, the inner walls of the two sides of the traction groove are both provided with V-shaped limiting blocks, and the middle part of one end, far away from the foundation pit, of the fixing plate is rotatably connected with a threaded rod I; a threaded hole is formed in the middle of the end, close to the first threaded rod, of the traction plate. Compared with the prior art, earthwork over a tunnel on the side wall of the foundation pit can be supported in a targeted mode, the earthwork over the tunnel is better prevented from collapsing, meanwhile, the fixing plate is fixed to the construction ground at the top of the foundation pit, and when workers conduct construction on the tunnel, the safety of the workers is improved. The foundation pit supporting structure with the tunnel on the side wall of the foundation pit cannot affect construction of the tunnel, the soil texture of the construction ground at the top of the foundation pit is usually hard, and the fixing plate is fixed to the construction ground at the top of the foundation pit and is not prone to loosening.

本发明提供了一种基坑侧壁有隧道的基坑支护结构，基坑顶部施工地面固定连接设有固定板，固定板伸入基坑的一端中部开设有贯穿端部的牵引槽，牵引槽的两侧内壁均设有V型限位块，固定板远离基坑的一端中部转动连接设有螺纹杆一，牵引槽的内部滑动连接设有牵引板，牵引板靠近螺纹杆一的一端中部设有螺纹孔；本发明与现有技术相比，可以针对性的对基坑侧壁隧道正上方土方进行支护，更好的防止了隧道正上方的土方垮塌，同时，固定板固定于基坑顶部施工地面上，当工人对隧道进行施工时，使基坑侧壁有隧道的基坑支护结构不会影响到隧道的施工，且基坑顶部施工地面通常土质较硬，固定板固定于基坑顶部施工地面上，更不容易松动。

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