Sliding film, box culvert pushing system and construction method for reducing box culvert pushing disturbance

Abstract

The invention belongs to the technical field of existing line culvert pushing construction, and discloses a sliding film, a box culvert pushing system and a construction method for reducing box culvert pushing disturbance. The sliding film for reducing the box culvert pushing disturbance comprises a bendable sliding film body with a rough face and a smooth face. The box culvert pushing system comprises the sliding film, a groove body perpendicular to the box culvert forward moving direction is arranged behind a blade corner at the front end of the outer wall of a box culvert, a roller is installed in the groove body, one end of the sliding film is fixed to a back wall, the other end of the sliding film is laid on the outer wall of the box culvert in the pushing forward moving direction ofthe box culvert and bypasses the roller, the sliding film portion not bypassing the roller is a laid sliding film portion, the rough face of the laid sliding film portion makes contact with a soil body outside the box culvert and cannot relatively slide, the smooth face of the laid sliding film portion makes contact with the outer wall of the box culvert and can relatively slide, and the sliding film portion bypassing the roller is an unlaid sliding film portion which is arranged inside the box culvert. The construction method adopts the box culvert pushing system for construction. By means ofthe technical scheme, disturbance to an existing road is little.

Description

technical field [0001] The invention belongs to the technical field of jacking culvert construction on existing lines, and in particular relates to a sliding film for reducing box culvert jacking disturbance, a box culvert jacking system and a construction method. Background technique [0002] When the jacking method is used for the construction of the box culvert passing through the existing line, the jacking construction process is as follows: ① Excavate the work pit, pour the slide plate → ② Prefabricate the box culvert body on the slide plate → ③ Build the back wall and reinforce the existing line → ④Install the jacking equipment and jack the box culvert→⑤After completing a jacking process, place the jacking column in the neutral position→⑥Cycle until the jacking is in place. [0003] At present, the channel passes through the existing road or railway line, and the construction method of direct jacking is mostly adopted. The direct jacking method has a relatively large d...

AI Technical Summary

Problems solved by technology

[0003] At present, the channel passes through the existing road or railway line, and the construction method of direct jacking is mostly adopted. The direct jacking method has a relatively large disturbance to the original road, and the original road is prone to damage and settlement. When pushing the box culvert, In order to reduce the disturbance to the upper line soil, pipe shed, grouting, mud lubrication and other methods are usually adopted, but the effect is limited, and the construction period is long and the cost is high

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