CN203452799U - Corrugated steel tunnel supporting structure - Google Patents

Corrugated steel tunnel supporting structure Download PDF

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Publication number
CN203452799U
CN203452799U CN201320390316.7U CN201320390316U CN203452799U CN 203452799 U CN203452799 U CN 203452799U CN 201320390316 U CN201320390316 U CN 201320390316U CN 203452799 U CN203452799 U CN 203452799U
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CN
China
Prior art keywords
tunnel
corrugated steel
concrete
supporting
steel plate
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Application number
CN201320390316.7U
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Chinese (zh)
Inventor
战福军
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南京联众建设工程技术有限公司
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Priority to CN201320390316.7U priority Critical patent/CN203452799U/en
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Publication of CN203452799U publication Critical patent/CN203452799U/en

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Abstract

The utility model discloses a corrugated steel tunnel supporting structure. A layer of corrugated steel plate is fixed on the surface of the inner wall of a tunnel, and concrete is filled between the inner wall of the tunnel and the corrugated steel plate. The corrugated steel tunnel supporting structure provided by the utility model is advantageous by being high in strength, resistant to corrosion, capable of being assembled as required, simple and convenient to construct, and the like; the corrugated steel plate interacts with the concrete and tunnel surrounding rocks, so as to form a tunnel safe structure system; and the corrugated steel plate has a flexible structure and can deform synchronously with the surrounding rocks, thereby releasing a high ground stress in the surrounding rocks, preventing the high ground stress of the surrounding rocks from causing concrete spalling or deformation of a preliminary bracing or causing a secondary lining space to be invaded, and ensuring smooth conduction of tunnel construction.

Description

A kind of corrugated steel tunnel support structure

Technical field

The utility model relates to a kind of tunnel support structure, relates in particular to a kind of corrugated steel to be applied in to supporting and protection structure in construction of tunnel.

Background technology

Geostatic stress refers to the inherent strain of rock mass under native state, when tunnel longitudinally passes geostatic stress weak surrounding rock stratum, if the uniaxial compressive strength of country rock (Rb) and major principal stress (σ h, max) ratio is in 4~7 scope time, for high-ground stress, ratio is less than at 4 o'clock, is stress highly.Constructing tunnel is section construction, is about to whole piece tunnel and is divided into multistage tunnel and excavates successively construction.Particularly, first according to the actual conditions of rock mass, determine longitudinal tap length in first paragraph tunnel, excavate this section of tunnel, and in tunnel, implement supporting, after completing, from the end in first paragraph tunnel, continue longitudinally to excavate second segment tunnel, in second segment tunnel, implement supporting, so circulation, until complete the supporting in final stage tunnel, has just completed a complete tunnel support.The effect of tunnel support is to form a tunnel structure system that has safe enough degree with country rock, can bear the various loads that may occur, the use headroom that keeps tunnel cross-section, prevent the country rock deterioration of further caving in, the smooth surface of circulation of air is provided, thus after having excavated every section of tunnel, must carry out in time supporting, and only have the concrete geological conditions of support process and this rock stratum, place to adapt, just can play good resistance to deformation, anti-effect of caving in.

Tunnel support is divided into advance support, preliminary bracing and secondary lining supporting.The general composite support being formed by preliminary bracing and secondary lining supporting that adopts of soft surrounding rock tunnel.Preliminary bracing in existing support process is that direct closely connected tunnel surface is set up rigidity preliminary bracing mostly, specifically adopt sprayed mortar, anchor pole, steel arch frame etc. fits tightly with country rock, constraint surrouding rock deformation, but at this kind of supporting and protection structure high stress in casing outside tunnel passage, often cause concrete cracking, peel off and arch form steelframe torsional deformation, so that the space of secondary lining has been occupied in the distortion of initial support, cause secondary lining to implement, therefore have to remove preliminary bracing supporting again, engineering cost and risk are significantly increased.

Utility model content

Utility model object: the purpose of this utility model is to provide a kind of concrete spalling that can avoid preliminary bracing and corrugated steel tunnel support structure distortion, that possess plasticity, can flexible assembling.

Technical scheme: a kind of corrugated steel tunnel support structure described in the utility model, fixing one deck corrugated steel on the surface of tunnel inner wall, and between tunnel inner wall and corrugated steel fill concrete.

Wherein, described corrugated steel is assembled connection, between adjacent steel plate, is bolted.Described bolt is high-strength bolt.The waveform of described corrugated steel is continuous sine bellows.Described concrete is slightly expanded concrete.

Beneficial effect: the utility model compared with prior art, its advantage be this supporting and protection structure high strength, corrosion-resistant, can assemble on request, easy construction etc.; Corrugated steel and concrete and tunnel surrounding interact, and form tunnel safety structural system; Corrugated steel itself is a kind of flexible structure simultaneously, deform in same pace when surrouding rock deformation, makes the high-ground stress in country rock obtain release, avoids the high-ground stress of country rock to cause concrete spalling, the distortion of preliminary bracing, cause secondary lining space to be occupied, guarantee carrying out smoothly of constructing tunnel; Because preliminary bracing can be not destroyed, can in tunnel, assemble corrugated steel and supporting and protection structure is installed, and corrugated steel is lightweight, be easy to transportation, be conducive to improve safety for tunnel engineering and the efficiency in area, high-ground stress rock stratum, reduce construction cost and construction risk.

Accompanying drawing explanation

Fig. 1 is tunnel cross-section schematic diagram;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the schematic cross-section of corrugated steel;

Fig. 4 is the B-B sectional view of Fig. 3.

The specific embodiment

Before tunnel construction engineering construction, the key step of clear and definite engineering construction in schematic design, comprising determining the division of tunnel passage, shape and the size of excavation contour line.When constructing tunnel, first dig out one section of both measured length and meet the passage of design section size, in the assembled corrugated steel supporting of channel interior, as shown in Figure 3,4 according to construction drawing requirement, in factory, process in advance the burst of the corrugated steel 2 that meets tunnel cross-section size, then be transported in passage and assemble, adjacent steel plate connects with high-strength bolt 4.Gap air placed concrete 3 between corrugated steel supporting and tunneling inwall 1, fits tightly at tunnel excavation face, as shown in Figure 1, 2 the outside of corrugated steel.And then based on this section of tunnel, carry out excavation and the supporting in next section of tunnel, also can excavation and supporting synchronously be carried out during to certain length at tunnel excavation, to improve safety index in efficiency of construction and tunnel.Corrugated steel 2 can be done at different length place according to different geostatic stress and cut off process, and makes supporting and protection structure produce minimum distortion under the condition of stress differently.Corrugated steel supporting and protection structure is a kind of flexible structure, and it allows corrugated steel section to produce certain distortion, and does not affect the function of corrugated steel supporting and protection structure.Also can, first at tunnel surface sprayed mortar, corrugated steel supporting and protection structure be installed after concrete coagulation.

Claims (5)

1. a corrugated steel tunnel support structure, is characterized in that: fixing one deck corrugated steel (2) on the surface of tunnel inner wall (1), and between tunnel inner wall (1) and corrugated steel (2) fill concrete (3).
2. a kind of corrugated steel tunnel support structure according to claim 1, is characterized in that: described corrugated steel (2) is assembled connection, between adjacent steel plate, by bolt (4), connects.
3. a kind of corrugated steel tunnel support structure according to claim 2, is characterized in that: described bolt (4) is high-strength bolt.
4. a kind of corrugated steel tunnel support structure according to claim 1 and 2, is characterized in that: the waveform of described corrugated steel (2) is continuous sine bellows.
5. a kind of corrugated steel tunnel support structure according to claim 1, is characterized in that: described concrete (3) is slightly expanded concrete.
CN201320390316.7U 2013-07-02 2013-07-02 Corrugated steel tunnel supporting structure CN203452799U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320390316.7U CN203452799U (en) 2013-07-02 2013-07-02 Corrugated steel tunnel supporting structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320390316.7U CN203452799U (en) 2013-07-02 2013-07-02 Corrugated steel tunnel supporting structure

Publications (1)

Publication Number Publication Date
CN203452799U true CN203452799U (en) 2014-02-26

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CN201320390316.7U CN203452799U (en) 2013-07-02 2013-07-02 Corrugated steel tunnel supporting structure

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103908893A (en) * 2014-04-18 2014-07-09 王驷壮 Method for purifying air inside tunnel
CN104389612A (en) * 2014-11-21 2015-03-04 中南大学 Treatment method for tunnel local collapse
CN104775832A (en) * 2015-04-21 2015-07-15 云南公投建设集团有限公司 Primary support structure of corrugated steel tunnel
CN104863614A (en) * 2015-05-15 2015-08-26 河北腾是达金属结构有限公司 Method for primary support with corrugated steel plate and concrete combined structure taking place of steel grating
CN106593466A (en) * 2017-01-19 2017-04-26 兰州交通大学 Method for reinforcing fractured lining of existing railway tunnel
CN106894830A (en) * 2017-03-21 2017-06-27 西南交通大学 A kind of double curvature arch supporting construction and construction method for underground engineering
CN108397215A (en) * 2018-04-11 2018-08-14 云南公建科技有限公司 A kind of tunnel assembled corrugated steel preliminary bracing structure and its installation method
CN110593890A (en) * 2019-08-16 2019-12-20 同济大学 Tunnel corrugated steel double-layer primary lining supporting method and structure

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103908893A (en) * 2014-04-18 2014-07-09 王驷壮 Method for purifying air inside tunnel
CN104389612A (en) * 2014-11-21 2015-03-04 中南大学 Treatment method for tunnel local collapse
CN104775832A (en) * 2015-04-21 2015-07-15 云南公投建设集团有限公司 Primary support structure of corrugated steel tunnel
CN104863614A (en) * 2015-05-15 2015-08-26 河北腾是达金属结构有限公司 Method for primary support with corrugated steel plate and concrete combined structure taking place of steel grating
CN104863614B (en) * 2015-05-15 2017-02-01 河北腾是达金属结构有限公司 Method for primary support with corrugated steel plate and concrete combined structure taking place of steel grating
CN106593466A (en) * 2017-01-19 2017-04-26 兰州交通大学 Method for reinforcing fractured lining of existing railway tunnel
CN106593466B (en) * 2017-01-19 2019-11-19 兰州交通大学 A method of reinforcing the rhegma lining cutting of Existing Railway Line tunnel
CN106894830A (en) * 2017-03-21 2017-06-27 西南交通大学 A kind of double curvature arch supporting construction and construction method for underground engineering
CN106894830B (en) * 2017-03-21 2019-10-18 西南交通大学 A kind of double curvature arch supporting construction and construction method for underground engineering
CN108397215A (en) * 2018-04-11 2018-08-14 云南公建科技有限公司 A kind of tunnel assembled corrugated steel preliminary bracing structure and its installation method
CN110593890A (en) * 2019-08-16 2019-12-20 同济大学 Tunnel corrugated steel double-layer primary lining supporting method and structure

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