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Stretchable quick stress compensation type steel frame connection structure

A steel frame and fast technology, applied in shaft lining, tunnel lining, underground chamber, etc., can solve problems such as difficult operation and achieve good overall stability

Inactive Publication Date: 2014-08-06
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method does not require welding, but it is not easy to operate when fixing the flanges on both sides

Method used

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  • Stretchable quick stress compensation type steel frame connection structure
  • Stretchable quick stress compensation type steel frame connection structure
  • Stretchable quick stress compensation type steel frame connection structure

Examples

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with drawings and embodiments.

[0018] The embodiment of the present invention is shown in the figure, the stretchable stress quick compensation type steel frame connection structure of the present invention has two flange end plates 4 arranged opposite to each other, and four connections and two opposite flange end plates are arranged between the two flange end plates. Internally threaded coupling piece 3 of the screw, the internally threaded coupling piece connects two screws with opposite thread directions.

[0019] In this embodiment, it includes four internally threaded connectors, 16 common hex nuts, 8 bolts, and 2 flanges. The shape of the flange end plate is the same as the flange plate corresponding to the initial support steel frame of the tunnel that needs to be connected. Internally threaded connectors as attached image 3 As shown, there is no internal thread in the middle section, and ...

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Abstract

The invention discloses a stretchable quick stress compensation type steel frame connection structure used for connecting steel frames in tunnel primary support. The structure is provided with two opposite flange end plates, at least three inner thread connection elements connected with two opposite screws are arranged between the two flange end plates, and the inner thread connection elements are connected with the two screws with opposite thread directions. The structure has the advantages of being convenient to install, good in stability and little in stress loss, and can be used for connecting structural steel frames and grating steel frames in tunnel primary support steel frame stiffening.

Description

technical field [0001] The invention relates to construction equipment, in particular to the field of manufacturing tunnel primary support steel frame reinforcement devices. Background technique [0002] At present, our country is vigorously developing the transportation industry. Due to the numerous mountains and undulating hills, it is often necessary to consider building tunnels in the process of building roads and railways. Tunnels usually adopt a composite lining structure, and the primary support is generally composed of one or more combinations of steel frames, steel mesh, shotcrete, and anchor rods. When it is necessary to use a steel frame for initial support, it often takes a lot of time to erect the steel frame due to manual operations. During tunnel excavation, there will generally be over-excavation or under-excavation. When the steel frames of each section are connected, if the under-excavation is under-excavated, the steel frames cannot be docked, and the und...

Claims

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Application Information

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IPC IPC(8): E21D11/14
Inventor 仇文革冷彪黄黆
Owner SOUTHWEST JIAOTONG UNIV
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