Box culvert construction method

Abstract

The invention discloses a box culvert construction method. The box culvert construction method comprises the following steps that a supporting frame is arranged on one side of a roadbed, and a steel shield is arranged in front of the supporting frame; a thrust beam is arranged on the side face of the roadbed, a winding drum is arranged on the thrust beam, a steel belt is wound on the winding drum, and the movable end of the steel belt is connected to the top face of the steel shield; the steel shield is pushed by the supporting frame to be embedded into the roadbed; soil is dug from the interior of the steel shield and the interior of the supporting frame until the steel shield penetrates through the roadbed; and grouting is conducted on the inner wall of a dug cavity. In the excavation process, when the steel shield is embedded into a soil body, the steel belt can be driven to enter the soil body, so that the steel shield is prevented from driving a soil layer above the steel shield to move in the advancing process, the change of a soil body structure in the tunneling process is prevented, road surface collapse or settlement in the tunneling process is avoided, and after the roadbed is dug through, grouting is conducted on the wall of the dug channel. The method is suitable for the field of road construction.

Description

technical field [0001] The invention is used in the field of road construction, and in particular relates to a construction method of a box culvert. Background technique [0002] At present, the construction of box culverts usually adopts the pipe shed support method, that is, the steel pipes are pierced from one side of the roadbed to the other side of the roadbed by a drilling machine, so that multiple dense holes are formed on both sides of the roadbed, and then excavation is carried out. , this construction method will not only consume a lot of manpower and material resources, but also will drive the soil layer of the roadbed to move when the steel pipe passes through the matrix, resulting in changes in the soil layer structure of the roadbed, which will easily lead to road surface collapse or settlement. Contents of the invention [0003] The purpose of the present invention is to solve at least one of the technical problems in the prior art, and provide a constructio...

AI Technical Summary

Problems solved by technology

[0002] At present, the construction of box culverts usually adopts the pipe shed support method, that is, the steel pipes are pierced from one side of the roadbed to the other side of the roadbed by a drilling machine, so that multiple dense holes are formed on both sides of the roadbed, and then excavation is carried out. , this construction method will not only consume a lot of manpower and material resources, but also will drive the soil layer of the roadbed to move when the steel pipe passes through the matrix, resulting in changes in the soil layer structure of the roadbed, which will easily lead to road surface collapse or settlement

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