Capping structure above open section of existing tunnel and construction method

Abstract

The invention discloses a capping structure above an open section of an existing tunnel and a construction method. The capping structure is arranged above the open section of the existing tunnel and comprises side walls arranged on the ground on the two sides of the open section of the existing tunnel and concrete laminated slab beam structures arranged at the upper ends of the side walls on the two sides to bear the upper load of the structure; the concrete composite slab beam structure comprises a plurality of precast beams and concrete cast-in-place slabs laid on the precast beams; the outer sides of the side walls on the two sides and the upper faces of the concrete cast-in-place slabs are filled with needed terrains through filling materials; and during construction, a frame structureformed by simply supporting the precast beams and the side walls is firstly used, then the concrete cast-in-place slabs are poured on the precast beam, finally, the filling material is filled. According to the capping structure, under the condition that traffic in the open section is not affected, the space of the land parcel on the upper portion of the open section can be fully utilized to enable the land parcel to exert larger value, and traveling of surrounding residents is facilitated.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a capping structure and a construction method above an open section of an existing tunnel. Background technique [0002] A common tunnel is composed of a buried section and an open section; the buried section is buried below the ground and has no effect on ground traffic and the use of the plot, while the open section has a certain division of the plot and cuts off the traffic on both sides of the open section. Communication and connection are not conducive to the development and utilization of the plot, and cause inconvenience to the travel of surrounding residents. [0003] In the prior art, the roof of the cast-in-place reinforced concrete passage needs to be erected on-site for pouring, and the traffic in the tunnel is closed. [0004] Therefore, how to form a unified organism from the divided plots on both sides of the open section without affecting the traffic ...

AI Technical Summary

Problems solved by technology

[0002] A common tunnel is composed of a buried section and an open section; the buried section is buried below the ground and has no effect on ground traffic and the use of the plot, while the open section has a certain division of the plot and cuts off the traffic on both sides of the open section. Communication and connection are not conducive to the development and utilization of the plot, and cause inconvenience to the travel of surrounding residents

[0003] In the prior art, the roof of the cast-in-place reinforced concrete channel needs to be erected and poured on site to close the traffic in the tunnel.

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