Fabricated inverted arch and manufacturing method thereof

A manufacturing method and assembly-type technology, which is applied in shaft equipment, earthwork drilling, wellbore lining, etc., can solve problems such as unsuitable tunnels, and achieve the effects of being conducive to structural stress, reducing costs, and facilitating production

Pending Publication Date: 2017-12-15
GUIZHOU HIGHWAY ENG GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the prefabrication method and construction of inverted arches, many scholars have done a lot of research, but they mainly focus on TBM shield tunnels, but these methods are not suitable for tunnels constructed by mining methods

Method used

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  • Fabricated inverted arch and manufacturing method thereof
  • Fabricated inverted arch and manufacturing method thereof
  • Fabricated inverted arch and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0049] A prefabricated inverted arch, see Figure 1-Figure 5 , including two sections of detachably connected inverted arch monomer 1, the inverted arch monomer includes a first section 1.1, a second section 1.2 and a first section 1.1 detachably connected by a detachable connecting piece 2 along its width direction. Three sections 1.3, the detachable connector 2 includes bolts 2.1, between the first section 1.1 and the second section 1.2, between the second section 1.2 and the third section 1.3 and adjacent Both groups of inverted arch monomers 1 are connected through the detachable connecting piece 2 .

[0050] The first section 1.1 and the third section 1.3 have the same structure and can be combined into one category for batch production.

[0051] The position where the bending moment at the junction of the first section 1.1 and the second section 1.2 and the junction of the second section 1.2 and the third section 1.3 is zero, where the unit of the bending moment is kN· ...

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PUM

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Abstract

The invention provides a fabricated inverted arch which comprises at least one inverted arch single body. Each inverted arch single body comprises a first section, a second section and a third section, wherein the first section, the second section and the third section are sequentially and detachably connected through detachable connecting parts in the width direction of the inverted arch single body, and the joint of the first section and the second section and the joint of the second section and the third section are arranged at the positions where the tunnel section bending moment is 0-0.05 times of the largest tunnel section bending moment. Through application of the technical scheme, the fabricated inverted arch has the effects that a, structure stress is better facilitated, and the stability and service life of the inverted arch are ensured; b, a tunnel structure can be closed to form a ring as early as possible in the tunnel construction process, so that the tunnel structure and construction safety are guaranteed; c, standard construction is facilitated, and engineering quality is improved; d, tunnel construction efficiency can be improved, the construction period is shortened, and engineering cost is greatly lowered; and e, cost is lowered by 10-15% compared with on-site pouring of concrete. The invention further discloses a manufacturing method of the fabricated inverted arch, after the inverted arch is prefabricated in a sectional mode, assembling is conducted, relevant provisions by laws and regulations can be met, and construction is convenient.

Description

technical field [0001] The invention relates to the technical field of road tunnels, in particular to an assembled inverted arch and a manufacturing method thereof. Background technique [0002] The large interference of inverted arch construction on excavation has always been a major problem that has not been well resolved in domestic tunnel mining method construction. In order to improve the durability of the tunnel structure, improve the stress state of the structure, and solve the tunnel water leakage and other diseases, the "Railway Tunnel Construction Specifications" (TB10204-2002) stipulates: "Inverted arches should be formed at one time to avoid step-by-step pouring. ". The advanced and one-time full-width construction of the inverted arch has become the basic requirement for tunnel construction, and the traditional half-width inverted arch construction method is gradually banned, especially for areas where the floor is soft rock with large deformation or other geol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10
CPCE21D11/10E21D11/107
Inventor 胡涛张学民皮启洋吴哨兵袁立杨旭翁学新袁胜勇肖叶棋
Owner GUIZHOU HIGHWAY ENG GRP
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