Construction method of structural system of river under no-cutoff working condition

Abstract

The invention relates to a construction method of a structural system of a river under a no-cutoff working condition, comprising the specific steps as follows: 1, constructing cofferdams and shortcuts; 2, removing river channel bridges and pile foundation; 3, constructing a base pit of the river channel segment; 4, constructing the parts at both sides of a new river bridge; and 5, removing the cofferdams and recovering water transportation of the river. The invention has the advantages that: 1, the road or underground pipeline is ensured to be uninterrupted in the construction period; 2, the pile foundation is arranged or fillers are filled below a drainage pipe in the paving process of the drainage pipe to ensure that the drainage pipe maintains the water-on state at the preset height after the cofferdam is gathered; 3, the drainage pipe is cut in the connection-after-disconnection manner when the underground passage ground wall is constructed to cut separately for alternative construction so as to ensure that the river is not cutoff in the construction process of an enclosing structure; and 4, the drainage pipe is supported by a lattice column support system during construction of the underground structures and bridges so as to ensure the stability of the drainage pipe and no cutoff of the river in the construction process of the underground structure.

Description

technical field [0001] The invention relates to a construction method of an underground structure and a bridge structure, in particular to a construction method of an underground structure and a bridge structure which must not only ensure uninterrupted flow of the river but also uninterrupted road traffic when the bridge is erected on a river. technical background [0002] When underground projects are being constructed, more and more projects will encounter river obstructions. [0003] At present, there are many methods for crossing river courses in underground open cut projects: 1) adopting the construction method of diverting river courses. This method is only suitable for projects with good site conditions and low construction period requirements. If the construction period is tight and the site conditions are not suitable for diverting the river, it is difficult to implement; 2) Disconnect the river course and restore it after completing the underground passage. This m...

AI Technical Summary

Problems solved by technology

This method also requires site coordination, which has a great impact on the surrounding environment, and there are problems with the connection and water sealing of the structure for continuous underground structures

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