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Assembling integral type underground structure allowing vulnerable portions of prefabricated columns to be replaced

A technology for underground structures and prefabricated columns, which is applied in underwater structures, infrastructure engineering, water conservancy projects, etc. It can solve the problems that the ends of inner columns are easily damaged, reduce the degree of damage, maintain continuous use, and reduce lateral movement Effect

Inactive Publication Date: 2018-06-01
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Changing the connection mode of the inner column to the shear pin (9) can effectively release the bending moment constraint at the column end and improve the deformation capacity of the inner column. However, under the action of earthquake load, the inner column of the prefabricated component When the bolt swings, stress concentration will occur at the corners of the upper and lower ends of the inner column, which will cause the end of the inner column to be easily damaged

Method used

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  • Assembling integral type underground structure allowing vulnerable portions of prefabricated columns to be replaced
  • Assembling integral type underground structure allowing vulnerable portions of prefabricated columns to be replaced
  • Assembling integral type underground structure allowing vulnerable portions of prefabricated columns to be replaced

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Embodiment Construction

[0015] Below in conjunction with the accompanying drawings, the station roof of the present invention, bottom beam (5) and inner column (4) are connected by shear pin (9), and the inner column end adopts the replacement mode. The specific implementation method is described:

[0016] according to Figure 1-3 , the present invention proposes an assembled monolithic underground structure that can replace the easily damaged parts (6) of prefabricated columns, including: prefabricated roof (1), prefabricated floor (3), prefabricated columns (4), prefabricated beams (5), Shear pin (9).

[0017] Specifically, the prefabricated side walls (2), the prefabricated floor (3), and the prefabricated roof (1) are rationally optimized, and the connection positions are connected by grouting sleeves (7) to ensure rigid connection at the connection positions. The prefabricated top and bottom beams (5) and the prefabricated columns are provided with pin holes (8), and replaceable parts are prov...

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Abstract

The invention provides an assembling integral type underground structure allowing vulnerable portions of prefabricated columns to be replaced, belongs to the technical field of civil engineering application and particularly relates to the technical field of connection of assembling type underground structure prefabricated parts. Prefabricated top beams and prefabricated bottom beams of a metro station are connected with prefabricated inner columns through shearing force bolt pins, fixed connection of structure connecting joints can be converted into swinging connection, and bending moment restraining of column ends is released. Meanwhile, the vulnerable portions of column corners of the upper end and the lower end of the prefabricated columns can be substituted by the adoption of high-elasticity and high-toughness materials and can also be replaced, and the function of reducing stress concentration on column feet is achieved. According to the assembling integral type underground structure, the method for connecting the bottom beams and the top beams with the inner columns can be used for solving the connection problem of the assembling type parts, thus, on the same stress condition, the stress pattern of the prefabricated columns is improved, meanwhile, the vulnerable parts can be replaced locally, and the function of repairing the prefabricated parts fast is achieved.

Description

technical field [0001] The invention relates to the technical field of prefabricated underground structure connection, in particular to a structural form in which vulnerable parts of inner columns of a prefabricated subway station can be set as replaceable parts, and belongs to the technical field of civil engineering applications. Background technique [0002] For the underground structure, the inner column of the station is a key component affecting the seismic performance of the subway station. Under the action of vertical ground motion, the axial compression ratio of the inner column increases significantly, resulting in the obvious insufficient deformation capacity of the inner column. For the cast-in-place subway station structure, the inner column is "consolidated" connected to the roof and floor of the station structure. This method makes the inner column bear the joint action of bending moment, shear force and axial force. Changing the connection mode of the inner ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/045
CPCE02D29/04
Inventor 杜修力刘洪涛阴孟莎许成顺
Owner BEIJING UNIV OF TECH
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