Enclosure structure of close-range underpass low-clearance bridge and construction method thereof

Abstract

The invention discloses an enclosure structure of a close-range underpass low-clearance bridge and a construction method thereof, and belongs to the technical field of tunnel construction. The open-cut tunnel enclosure structure comprises an open-cut tunnel enclosure structure body and a pier foundation isolation protection structure, the open-cut tunnel enclosure structure body comprises a set of enclosure rigid piles, an enclosure waterproof curtain arranged on the outer sides of the enclosure rigid piles, and profile steel arranged on the inner sides of the enclosure rigid piles and used for enhancing the rigidity of the enclosure structure body, and reinforced concrete supports and steel supports are erected between the enclosure rigid piles. The open-cut tunnel enclosure structure and a servo system are adopted, the rigidity of a bridge structure is greatly improved, the overall deformation resistance of the structure is enhanced, the influence of tunnel construction on operation of the elevated bridge is reduced, and micro-disturbance tunnel construction on the bridge is achieved, the problem that the construction space is limited under the low clearance condition is solved through the modes of drill rod lengthening and the like, and the construction efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of tunnel construction, and in particular relates to an enclosure structure and a construction method of a short-distance underpass low-clearance bridge. Background technique [0002] With the acceleration of my country's urbanization process, the number of tunnels and urban viaducts is constantly increasing at a high speed. This will inevitably lead to the situation that the open-cut tunnel passes under the existing urban viaduct at a short distance, and the tunnel construction is carried out in the adjacent viaduct foundation range. Since the viaduct, as the main traffic artery of the city, generally needs continuous operation, how to ensure the safe operation of the viaduct during the tunnel construction process is an urgent problem to be studied and solved. [0003] During the construction of open-cut tunnels, disturbances in the surrounding soil will inevitably be caused, which in turn will cause horiz...

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Problems solved by technology

[0005] In view of the above-mentioned problems existing in the prior art, the object of the present invention is to provide an enclosure structure and a construction method for a short-distance pass-through low-clearance bridge, which can reduce the impact of tunnel construction on the operation of the elevated bridge and solve the problem of low-clearance bridges at the same time. Under restricted conditions, the problem of long pile construction can be improved to improve construction efficiency

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