An Assembled Prefabricated Inverted Arch Structure of a Highway Tunnel

Abstract

The invention relates to the technical field of highway tunnels, in particular to a highway tunnel fabricated prefabricated inverted arch structure. The structure is characterized in that flanges plates are welded at the end parts of connecting members, stiffening rib plates are welded to the connecting members and the flange plates, connecting sleeve pipes connect the end parts of the two connecting members, connecting bolts fix the flange plates at the end parts and the side faces of a prefabricated member A and a prefabricated member B, anti-cracking reinforcing steel bar meshes are arranged on the upper portions and the lower portions of the connecting members and the connecting sleeve pipes, cast-in-situ concrete is arranged on the connecting members, the connecting sleeves and the anti-cracking reinforcing steel bar meshes, pre-embedded connecting steel bars are arranged on the prefabricated member B, hoisting and grouting holes are arranged on the prefabricated member A and theprefabricated member B, and the pre-embedded connecting steel bars connect the prefabricated member B with a secondary lining. According to the highway tunnel fabricated prefabricated inverted arch structure, the prefabricated part A and the prefabricated part B can be quickly connected through the steel pipe concrete connecting members, so that the inverted arch structure can exert the bearing capacity in time, the stability of a tunnel body is facilitated, and the operation efficiency and the safety of workers are improved.

Description

technical field [0001] The invention relates to a prefabricated inverted arch structure, in particular to an assembled prefabricated inverted arch structure of a road tunnel, belonging to the technical field of road tunnels. Background technique [0002] The traditional tunnel inverted arch lining structure construction is carried out by manually binding steel bars and formwork cast-in-place concrete on site. Due to the lack of design and production standards for the inverted arch formwork, the low positioning accuracy of the on-site reinforcement, and the poor construction and maintenance environment, the construction of the tunnel inverted arch often has quality problems such as voids and undense zones, irregular structural shapes, and poor strength and appearance. ; and the traditional inverted arch structure has many construction procedures and high requirements for skilled workers, which often cause problems such as slow construction speed, inability to load the lining ...

AI Technical Summary

Problems solved by technology

Due to the lack of design and production standards for the inverted arch formwork, the low positioning accuracy of the on-site reinforcement, and the poor construction and maintenance environment, the construction of the tunnel inverted arch often has quality problems such as voids and undense zones, irregular structural shapes, and poor strength and appearance. ; and the traditional inverted arch structure has many construction procedures and high requirements for skilled workers, which often cause problems such as slow construction speed, inability to load the lining in time, and high material and labor costs. necessary

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