Novel high-molecular plug plate for tunnel secondary lining

Abstract

The invention discloses a novel polymer plug plate for a tunnel secondary lining, and relates to the technical field of tunnel construction. Comprising an upper mold plate, a lower mold plate and a supporting mechanism, the upper mold plate is hinged to the lower mold plate, the lower mold plate is hinged to the supporting mechanism, and the supporting mechanism is detachably connected with the upper mold plate; the supporting mechanism comprises a supporting seat, a supporting rod and a connecting hanging plate, one end of the supporting seat is fixedly connected with the trolley, the other end of the supporting seat is hinged to the supporting rod, the other end of the supporting rod is in threaded connection with the upper die plate, one end of the connecting hanging plate is fixedly arranged on the supporting seat, and the other end of the connecting hanging plate is fixedly connected with the supporting rod through a fixing pin. The plug plate, the upper template and the lower template are made of high-molecular transparent materials, the concrete pouring condition can be clearly seen during construction, it is guaranteed that the position of the tunnel water stop belt is accurately installed, the upper template and the lower template are hinged, the upper template can turn over along the lower template, the lower template and the supporting base are hinged, and the supporting base is convenient to use. And the lower template can be overturned along the trolley, so that the construction efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a novel polymer plug plate for the second lining of the tunnel. Background technique [0002] In the construction of tunnels, after the excavation of the cave body is completed, a layer of concrete cave body protective layer must be poured, and the trolley is just a kind of equipment used for pouring concrete in tunnel construction. It mainly includes gantry frames, curved steel plates mold, hydraulic support device and trolley driving mechanism; during construction, the trolley drives into the specific construction site along the track laid in the tunnel, and then the hydraulic support device supports the arc-shaped steel plate formwork to the designated position, and then uses the plug to close the arc-shaped steel plate formwork. After one end is plugged, concrete can be directly poured into the space formed by the tunnel wall, the curved steel formwork and the plu...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, most of the plugs of the second lining trolley are processed and assembled with wooden boards, and a plug plate is installed on one side of the formwork trolley. Due to the limitation of the tunnel environment, traditionally, temporary assembly is often used to fix the ring direction, length Different narrow wooden strips are used as the plug board, which is troublesome to disassemble and difficult to reuse. Secondly, in practical applications, because the traditional plug board has too many joints, it directly leads to the installation of the buried waterstop It is extremely inconvenient, and therefore prone to local grout leakage during the construction process, resulting in a rough base surface, which in turn reduces the waterproof effect of the waterstop

The waterstop is fixed by steel bar bends. It is difficult to ensure the installation quality of the buried waterstop during construction. First, it is difficult to guarantee the installation position; second, it is difficult to guarantee the reserved length

However, the installation steps of traditional wooden plug boards are complicated, it is difficult to determine the concrete pouring situation, and it is impossible to ensure the accurate installation of the tunnel water stop, which makes it difficult for workers to construct and wastes a lot of manpower and material resources.

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