Micro-interference post-filling underground excavation connector connecting component and construction method thereof

Abstract

The invention discloses a micro-interference post-filling underground excavation connector connecting component and a construction method thereof. The micro-interference post-filling underground excavation connector connecting component comprises end cross beams, end columns, connecting component longitudinal beams, connecting component floor slabs and connecting component side walls, wherein reinforcing steel bars of the connecting component floor slabs are connected with longitudinal reinforcing steel bars of an existing underground structure and are disconnected at a deformation joint; reinforcing steel bars of the connecting component longitudinal beams are connected with longitudinal reinforcing steel bars of the existing underground structure; newly-built columns are arranged at thejoints of the connecting component side walls and the existing underground structure; and when fender posts at the connecting parts of the existing underground structure and the connecting component are chiseled away, corresponding fender post longitudinal steel bars are reserved, and the fender post longitudinal steel bars are anchored into the corresponding connecting component floor slabs; andduring construction, the existing underground structure is firstly modified in a targeted mode, and then the connecting component longitudinal beams, the connecting component floor slabs and the connecting component side walls are connected with the existing underground structure. According to the micro-interference post-filling underground excavation connector connecting component and the construction method thereof, arrangement of the post-filling underground excavation connector connecting component is completed more economically, reasonably, safely and efficiently.

Description

technical field [0001] The invention relates to the technical field of construction of underground structures, in particular to a micro-interference back-dug interface connection component and a construction method thereof. Background technique [0002] In the field of underground engineering, when the project is implemented in stages, there are interface connection components between the first implementation part and the second implementation part. The function of the interface connection components is to transmit the structural force and seal the interface waterproof. Better interface connection components can ensure the safety of the structure at the interface and meet the requirements for deformation and waterproofing of underground components. When the structure implemented later is constructed by the open cut method, due to the large working surface during construction, the structural components can be processed flexibly, such as reconstruction, expansion or adjustment...

AI Technical Summary

Problems solved by technology

If the above-mentioned conventional transformation is adopted, there will be a lot of interference. First, it will interfere with the use of the already built structures. For example, whether it is to strengthen or remove the existing structures, it will affect the normal use of the existing structures; second, it will interfere with the new construction. For the construction of the original interface components, the removal and new construction of the original interface components need to be reinforced in advance, which are divided into internal force reinforcement and external foundation reinforcement. The external foundation reinforcement is in conflict with the new excavation structure, and it is impossible to carry out concealed excavation during the reconstruction stage. dig construction

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