Multi-truss prefabricated folding lagging jack and erection method thereof

An arch and pedestal technology, which is applied to the field of multiple prefabricated folding arches, can solve the problems of inconvenient installation process and large workload of installation personnel.

Pending Publication Date: 2022-07-08
CR10BG NO 3 CONSTR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, during tunnel construction, the excavated tunnel needs to be reinforced in time. The tunnel is supported by installing an arch frame in the tunnel, and concrete is poured to reinforce the tunnel. During the tunnel reinforcement operation, due to the erection of the arch frame Usually, the multi-section arches are spliced ​​sequentially, and the arches are connected by bolt connection, which makes the installation process of the arches more inconvenient and brings a greater workload to the installers.

Method used

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  • Multi-truss prefabricated folding lagging jack and erection method thereof
  • Multi-truss prefabricated folding lagging jack and erection method thereof
  • Multi-truss prefabricated folding lagging jack and erection method thereof

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Embodiment 1

[0027] like figure 1 , 2 , 5, the present embodiment provides a multiple prefabricated folding arch, which includes an arch body 110, and the arch body 110 includes a top arch 120 and a base arch 130 disposed at both ends of the top arch 120, Both the top arch 120 and the base arch 130 include arc-shaped strip plates 510 . The inner and outer ends of the strip plates 510 are provided with annular sheets 520 arranged perpendicular to the strip plates 510 . Both ends of the top arch 120 and the end of the base arch 130 close to the top arch 120 are provided with hinges 210 , and bolts between the top arch 120 and the hinges 210 on the base arch 130 connect. The top arch 120 is hinged with the base arches 130 at both ends, and the two ends of the top arch 120 and the base arches 130 at both ends are provided with a connection for connecting the top arch 120 and the base arch 130 . connector.

[0028] When the multiple prefabricated folding arches in this embodiment are stored...

Embodiment 2

[0037] The present embodiment provides a method for erecting the multiple prefabricated folding arches in the embodiment, which includes the following steps:

[0038] Step 1. Make multiple prefabricated folding arches and assemble them outside the tunnel;

[0039] Step 2: Fix the top arch frame 120 of the multi-pronged prefabricated folding arch frame assembled in step 1 on the crawler-type three-arm three-basket arch frame installation trolley. The crawler-type three-arm three-basket arch frame installation platform in this embodiment is The truck adopts the LGP340A arch-spray integrated trolley produced by Lanhai Zhizhuang; after that, the multiple prefabricated folding arches are transported to the installation site in the tunnel;

[0040] Step 3, start the crawler-type three-arm three-basket arch installation trolley to unfold the multiple prefabricated folding arches until the L-shaped plate 470 on the base arch 130 is inserted into the L-shaped groove 460;

[0041] Step...

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PUM

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Abstract

The invention relates to the field of lagging jacks for tunnel construction, in particular to a multi-truss prefabricated folding lagging jack and an erecting method thereof.The multi-truss prefabricated folding lagging jack comprises a lagging jack body, the lagging jack body comprises a top lagging jack and base lagging jacks arranged at the two ends of the top lagging jack, and the top lagging jack is hinged to the base lagging jacks at the two ends of the top lagging jack; connecting pieces used for connecting the top arch frame and the base arch frames are arranged between the two ends of the top arch frame and the base arch frames at the two ends of the top arch frame. Compared with an existing multi-section type arch frame, when the arch frame is installed, time can be better saved, and the installation efficiency of the arch frame in a tunnel is improved.

Description

technical field [0001] The invention relates to the field of arches used for tunnel construction, in particular to a multi-column prefabricated folding arch. Background technique [0002] At present, during tunnel construction, it is necessary to reinforce the excavated tunnel in time. The tunnel is supported by installing arch frames in the tunnel, and concrete is poured to reinforce the tunnel. During the tunnel reinforcement operation, due to the erection of the arch frame Usually, the multi-section arches are spliced ​​in sequence, and the arches are connected by bolts, which makes the installation process of the arches inconvenient and brings a large workload to the installers. SUMMARY OF THE INVENTION [0003] In order to solve the above-mentioned technical problems, the present invention is solved by the following technical solutions: [0004] A multiple prefabricated folding arch frame comprises an arch frame body, the arch frame body comprises a top arch frame an...

Claims

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Application Information

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IPC IPC(8): E21D11/20E21D11/24E21D11/40
CPCE21D11/20E21D11/24E21D11/40Y02A40/25
Inventor 陈永进乔志兵杨帆高虎李栋
Owner CR10BG NO 3 CONSTR
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