Connection structure for wide-range adjacent connection of existing transfer stations and construction method

Abstract

The invention discloses a connection structure for wide-range adjacent connection of existing transfer stations and a construction method. Reinforcement longitudinal beams and columns are of a concrete cast-in-place structure and are combined and connected with an existing structure together through the bar embedding technology; then deformation joints are arranged between the reinforcement structure and a newly-built structure to complete communication of the new structure and the old structure; and finally the safety of the existing structure is guaranteed through the reinforcement structure and the measures such as segmented static force removing. By means of cover and cut-top down, wide-range adjacent connection of part of newly-built stations is achieved, the layering connection technology is utilized, lateral supporting is provided in time, existing station deformation can be strictly controlled, and the safety of the existing structure can be guaranteed. Meanwhile, according to the connection structure, bottom plate downward-concave longitudinal beams are additionally arranged, water seepage paths on bottom plate deformation joints are lengthened, and therefore the waterproof performance is greatly improved, control over existing structure deformation and internal force conversion is facilitated greatly, and the connection structure is especially suitable for wide-range adjacent connection projects and projects with complex surroundings.

Description

technical field [0001] The invention belongs to the field of subway engineering, and in particular relates to a connection structure and a construction method for adjoining existing transfer stations in a large range. Background technique [0002] The construction of subway has become one of the effective ways to solve modern transportation problems. With the continuous increase of urban subway construction scale, transfer stations occupy an increasingly important position in urban rail transit network. The transfer of new and old subway lines and the different phases of construction will inevitably involve the connection between the later built subway station and the existing subway station. When designers design subway stations first, they generally reserve transfer interfaces for subsequent station design and construction. [0003] Due to the rapid development of modern cities, the subway line network is constantly in a state of adjustment, and sometimes there will be tr...

AI Technical Summary

Problems solved by technology

In this type of project, if no measures and methods are taken to control the deformation of the existing station and remove the existing structure, it will have an extremely adverse impact on the safety of the existing subway station

Especially in the later construction of stations with large horizontal spans and complex surrounding environments, temporary supports cannot be used to control the deformation of existing structures. If the connection design and construction plan are slightly unreasonable, it will cause irreversible damage to the existing structures, and even cause Engineering accidents endanger the lives and property of subway passengers

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