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Tunnel engineering multi-steel-arch connecting device

A technology for connecting devices and tunnel engineering, applied in tunnels, tunnel linings, shaft equipment, etc., can solve the problems of slow positioning speed, increased tunnel risk, long working time, etc., to save positioning, increase overall stability, and improve efficiency. Effect

Inactive Publication Date: 2016-08-24
江苏瑞沃建设集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a support method mainly has problems such as slow positioning speed and poor integrity, repetitive work and large errors, long working hours, and greatly increased risks in tunnel construction
Since the principle of NATM tunnel construction is short footage, early closure, frequent measurement, but the existing construction method is obviously too long and inefficient

Method used

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  • Tunnel engineering multi-steel-arch connecting device
  • Tunnel engineering multi-steel-arch connecting device
  • Tunnel engineering multi-steel-arch connecting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Such as Figure 1-3 The shown multi-prong connection device for a tunnel engineering steel arch includes a connection brace 1 and a chute 2 located on the steel arch 4, one end of the connection brace 1 is fixedly connected to the steel arch 4, and the other end of the connection brace 1 One end is connected with the chute 2, and the connecting end can slide up and down in the chute 2; the connecting brace 1 includes two cross-connected connecting pieces 3, and the two connecting pieces 3 can move relative to each other at the connection point as an axis. The arch frame has 4 arcs corresponding to the arc.

Embodiment 2

[0021] The use process of the tunnel engineering steel arch multi-joint connection device of the present invention is as follows:

[0022] ①. Carry out the processing and manufacturing of the steel arch 4 in the processing area to ensure the accuracy of the steel arch 4;

[0023] ②. Select the connecting device according to the design requirements, and ensure that the arc of the connecting piece 3 is compatible with the arc of the steel arch 4, so as to ensure the smooth opening of the device;

[0024] ③. Determine the number of steel arch frames that need to be connected according to the actual footage, such as image 3 Said, in the present embodiment adopts three joints. Select a suitable connecting device according to the spacing of the steel arch 4, and fix the lower hole of the connecting piece 3 of the connecting device on the steel arch 4 by punching holes on the steel arch 4 and connecting with bolts. The chute 2 on the frame 4 is connected to ensure that it moves up...

Embodiment 3

[0030] The structure and connection relationship of each part of a tunnel engineering steel arch frame multiple connection device described in this embodiment are the same as those in Embodiment 1, and the different technical parameters are:

[0031] 1) The chute 2 is arranged on the backing plate 5;

[0032] 2) The four ends of the connecting piece 3 are connected with the backing plate 5 through bolts;

[0033] 3) The backing plate 5 and the steel arch 4 are connected by bolts;

[0034] 4) Use two blocks and one joint during construction.

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Abstract

The invention relates to the technical field of tunnel construction, in particular to a tunnel engineering multi-steel-arch connecting device. The connecting device comprises connecting supports and sliding grooves. One ends of the connecting supports are fixedly connected to steel arches. The other ends of the connecting supports are connected with the sliding grooves, and the connecting ends can slide up and down in the sliding grooves. Each connecting support comprises two connecting pieces which are connected in a crossed mode, wherein the two connecting pieces can relatively move with the joint as an axis. The change within a certain radian range can be achieved through changes and fine adjustment of the connecting device, and the requirement for various distances of the steel arches is met; the overall stability of the steel arches can be improved, the effect of a diagonal bridging is achieved, the overall stability among the steel arches is improved, positioning and adjusting time are greatly saved, one set of steel arches can be positioned only by opening the device after first-time positioning in the actual operation, and efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a multi-prong connection device for steel arch frames in tunnel engineering. Background technique [0002] In the construction process of tunnel engineering, steel arches are used for the initial support. Steel arches generally use L, U, I-shaped steel, steel rails, steel pipes and other steels, which are processed into the required shape and installed by the whole frame or assembled by rods. Support measures for strengthening underground works. It can be combined with anchor rods, shotcrete, and steel mesh to form a composite support. Generally, it is made of a single frame and installed in pieces. Such a support method mainly has problems such as slow positioning speed and poor integrity, repeated work and large errors, long working hours, and greatly increased risks in tunnel construction. Since the principle of NATM tunnel construction is short footage, early cl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/24
CPCE21D11/24
Inventor 孙小峰余付林濮天星刘远林刘洪佳
Owner 江苏瑞沃建设集团有限公司
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