CN114562297A - Rectangular steel arch frame tunnel supporting structure with honeycomb sandwich structure and profile steel combined - Google Patents
Rectangular steel arch frame tunnel supporting structure with honeycomb sandwich structure and profile steel combined Download PDFInfo
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- CN114562297A CN114562297A CN202210338069.XA CN202210338069A CN114562297A CN 114562297 A CN114562297 A CN 114562297A CN 202210338069 A CN202210338069 A CN 202210338069A CN 114562297 A CN114562297 A CN 114562297A
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- steel arch
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 155
- 239000010959 steel Substances 0.000 title claims abstract description 155
- 239000011435 rock Substances 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims description 35
- 210000002421 cell wall Anatomy 0.000 claims description 14
- 230000001413 cellular effect Effects 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 5
- 239000004567 concrete Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims 2
- 239000007924 injection Substances 0.000 claims 2
- 239000011378 shotcrete Substances 0.000 abstract description 7
- 230000006378 damage Effects 0.000 abstract description 3
- 210000004027 cell Anatomy 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/20—Special cross- sections, e.g. corrugated
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a honeycomb sandwich structure and section steel combined rectangular steel arch frame tunnel supporting structure which comprises a secondary lining layer, a waterproof layer, a primary sprayed concrete layer, an upper multi-section honeycomb sandwich structure and section steel combined rectangular steel arch frame, a bottom multi-section traditional strip steel arch frame, and a connecting device between a locking anchor rod and the steel arch frame. The rectangular steel arch frame surface combined by the upper multi-section honeycomb sandwich structure and the section steel is rectangular, the contact area of the steel arch frame and the surrounding rock is increased, the surface is provided with a layer of honeycomb sandwich structure, the honeycomb sandwich structure deforms through the stress of surrounding rock masses, the energy of the surrounding rock is released, the deformation amount of the steel arch frame under different tunnel conditions can be met by adjusting the layer number of the honeycomb in the honeycomb sandwich structure, and therefore the supporting structure has the capability of coordinating with the surrounding rock to deform, has the rigidity for preventing the surrounding rock from deforming too much, and can effectively solve the problem that primary support of a tunnel with high ground stress and large deformation is easy to deform and damage.
Description
Technical Field
The invention belongs to the technical field of tunnel engineering, and particularly relates to a rectangular steel arch frame tunnel supporting structure combining a honeycomb sandwich structure and section steel.
Background
With the continuous development of the traffic construction industry in China, the problem of high ground stress in a weak stratum deeply buried tunnel becomes a leading factor endangering the engineering safety of the tunnel. Rock mass around the tunnel often has great rapid deformation, and what comes with it is the troublesome problem such as support distortion, destruction and invasion net empty, if high ground stress is not properly released, secondary lining fracture deformation is easily caused in the later stage, makes its safety and normal use that seriously influence tunnel structure.
The steel arch frames used in the primary support at present are formed by connecting single strip-shaped I-shaped steel, and the steel arch frames are connected into a ring and then are sprayed with concrete for covering to form a first-layer primary support. For the treatment of high ground stress surrounding rock 'large deformation', particularly in the aspect of supporting system design, a supporting scheme of strong support and reservation of larger deformation is a scheme which is applied more at present, but the effect is not ideal. When the surrounding rock is deformed greatly, the load borne by the steel arch frame is large, and instability and damage are easy to occur, so that engineering safety accidents are caused.
Therefore, the reasonable supporting structure of the high ground stress soft rock tunnel needs to have the capability of coordinating with the surrounding rock to deform and the rigidity for preventing the surrounding rock from deforming too much, and a good effect can be achieved only by adopting a supporting scheme of combining rigidity and flexibility.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects and defects mentioned in the background technology, and provide a honeycomb sandwich structure and a rectangular steel arch frame tunnel supporting structure combined by section steel, which has the advantages of large supporting contact area, good stability, strong deformation bearing capacity, simple structure and good economic effect, and is particularly used for solving the control problems of high ground stress, weak ground stress and large deformation of a broken stratum. In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a rectangular steel arch frame tunnel supporting structure combining a honeycomb sandwich structure and section steel comprises a secondary lining layer, a waterproof layer, a primary sprayed concrete layer, a rectangular steel arch frame combining an upper multi-section honeycomb sandwich structure and the section steel, a bottom multi-section traditional strip steel arch frame and a locking anchor rod, wherein the upper multi-section honeycomb sandwich structure and the section steel are connected with the rectangular steel arch frame combining the upper multi-section honeycomb sandwich structure and the section steel and the bottom multi-section traditional strip steel arch frame are connected through a connecting device and erected in the primary sprayed concrete layer.
The rectangular steel arch frame combined by the honeycomb structure and the section steel consists of I-shaped steel, angle steel, a honeycomb sandwich structure and connecting bolts, wherein the I-shaped steel is connected with the angle steel through welding, and the angle steel is connected with the honeycomb sandwich structure through the connecting bolts.
The honeycomb sandwich structure is composed of an upper metal plate and a lower metal plate, and a crushable single-cell-wall perforated metal multi-stage honeycomb layer or double-cell-wall perforated metal multi-stage honeycomb layer is sandwiched between the upper metal plate and the lower metal plate.
The single-cell-wall perforated metal multilevel honeycomb layer and the double-cell-wall perforated metal multilevel honeycomb layer comprise a plurality of honeycomb cells, the honeycomb cells are of hollow structures, and the cross sections of the honeycomb cells are regular hexagons. The oblique cell walls of the single-cell-wall perforated metal multi-stage honeycomb-like structure layer are provided with a plurality of round holes, and the vertical cell walls of the double-cell-wall perforated metal multi-stage honeycomb-like structure layer are provided with a plurality of round holes.
In the honeycomb sandwich structure, the number of layers of the single-cell-wall perforated metal multi-level honeycomb layers or the double-cell-wall perforated metal multi-level honeycomb layers is increased, so that the rigidity of the honeycomb sandwich structure is greatly increased, and the angle steel is additionally arranged below the honeycomb sandwich structure to serve as a support, so that the stability of the structure is improved.
In the rectangular steel arch centering combined by the honeycomb sandwich structure and the section steel, the I-shaped steel and the angle steel are welded on the same plane at one side of the tunnel surrounding rock, and the honeycomb sandwich structure is laid on the angle steel, so that the angle steel can bear the stress of the surrounding rock while lifting up and fixing the steel arch centering.
The rectangular steel arch frame formed by combining the honeycomb sandwich structure and the section steel can meet the deformation amount required by the steel arch frame under different tunnel surrounding rock conditions by adjusting the number of the single-cell-wall open-pore metal multilevel honeycomb layers or the double-cell-wall open-pore metal multilevel honeycomb layers in the honeycomb sandwich structure, and can adjust the strength of the honeycomb sandwich structure by adjusting the thickness of the honeycomb cell walls in the honeycomb sandwich structure.
Compared with the prior art, the invention has the advantages that:
1. the rectangular steel arch centering of the honeycomb sandwich structure and the section steel combination breaks through the traditional strip steel arch centering concept, the steel arch centering is designed to be rectangular, the contact area of the steel arch centering and the surrounding rock is increased, and the deformation of the surrounding rock can be restrained earlier and in a larger area in high ground stress soft rock and broken strata.
2. According to the invention, the honeycomb sandwich structure layer is laid on the surface of the rectangular steel arch frame combined by the honeycomb sandwich structure and the section steel, and the honeycomb sandwich structure deforms through the stress of surrounding rock mass, so that the energy of surrounding rock is released, and the problem that the primary support of the high-ground-stress soft rock large-deformation tunnel is easy to deform and break can be effectively solved.
3. In the rectangular steel arch centering with the honeycomb sandwich structure and the section steel combined, the I-shaped steel and the angle steel are welded on the same plane at one side of the tunnel surrounding rock, and the honeycomb sandwich structure layer is laid on the connecting angle steel, so that the angle steel can bear the stress of the surrounding rock while fixing the adjacent steel arch centering.
4. According to the rectangular steel arch frame combined by the honeycomb sandwich structure and the section steel, the rigidity of the honeycomb sandwich structure can be greatly increased by increasing the number of layers of the honeycomb, and the weight is minimally increased compared with other strong-support hard-top supporting structures. And angle steel is additionally arranged below the honeycomb sandwich structure to serve as a support, so that the stability of the structure is improved.
5. According to the rectangular steel arch centering with the honeycomb sandwich structure and the section steel combined, the upper honeycomb sandwich structure and the rectangular steel arch centering with the section steel combined are used for increasing the inertia moment of a weak axis plane of the steel arch centering in another form (the honeycomb sandwich structure is laid on the section steel, the thickness and the width of a flange on one side of the section steel are increased) under the condition that the type of the I-shaped steel is not changed, the out-of-plane instability of the steel arch centering is prevented, and the stability of the steel arch centering is improved.
6. The rectangular steel arch centering with the honeycomb sandwich structure and the section steel combined can meet the deformation amount required by the steel arch centering under different tunnel surrounding rock conditions by adjusting the number of layers of the honeycomb in the honeycomb sandwich structure, and can adjust the strength of the honeycomb sandwich structure by adjusting the thickness of the cell walls of the honeycomb in the honeycomb sandwich structure.
7. The tunnel supporting structure is formed by combining an upper multi-section honeycomb sandwich structure, a rectangular steel arch frame combined by section steel and a bottom multi-section strip-shaped steel arch frame, and is more suitable for the characteristics of large upper deformation and small lower deformation of the tunnel structure, so that the material is saved, and the economical efficiency is improved.
8. The rectangular steel arch frame combined by the honeycomb sandwich structure and the section steel is a prefabricated component, so that the honeycomb sandwich structure is simple in structure and easy to manufacture.
9. According to the invention, the surrounding rock pressure is released through the compression deformation of the honeycomb sandwich structure, the pressure applied to the tunnel structure is reduced after the tunnel surrounding rock energy is released, the support parameters do not need to be greatly enhanced, and the economical efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a rectangular steel arch tunnel supporting structure combined by a honeycomb sandwich structure and section steel.
FIG. 2 is a schematic view of the honeycomb sandwich structure and the rectangular steel arch structure combined by the section steel of the invention.
FIG. 3 is a schematic view of a multi-stage honeycomb structure with open cell walls in the honeycomb sandwich structure of the present invention.
Fig. 4 is a schematic view of a multi-stage honeycomb structure with dual cell walls and open pores in the honeycomb sandwich structure of the invention.
FIG. 5 is a schematic view showing the arrangement of the connecting bolts of the honeycomb sandwich structure and the angle steel of the present invention.
Fig. 6 is a schematic view of the connection between the honeycomb sandwich structure and the angle steel of the present invention.
Illustration of the drawings:
1. secondary lining layer; 2. a waterproof layer; 3. primary shotcrete layer; 4. a rectangular steel arch frame combining the honeycomb sandwich structure and the section steel; 41. i-shaped steel; 42. angle steel; 43. a honeycomb sandwich structure; 44. a connecting bolt; 45. a metal splint; 46. the unit cell wall is provided with a metal multilevel honeycomb-like layer; 47. double-wall-wrapping perforated metal multilevel honeycomb-like layer; 5. traditional bar steel arches; 6. locking the anchor rod; 7. and (4) a connecting device.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the inventive concept. All falling within the scope of the present invention.
As shown in fig. 1 to 6, an embodiment of the present invention provides a honeycomb sandwich structure and section steel combined rectangular steel arch tunnel supporting structure, which includes a secondary lining layer 1, a waterproof layer 2, a primary sprayed concrete layer 3, an upper multi-section honeycomb sandwich structure and section steel combined rectangular steel arch 4, a bottom multi-section conventional strip steel arch 5 and a locking anchor 6, wherein the upper multi-section honeycomb sandwich structure and section steel combined rectangular steel arch 4 and the bottom multi-section conventional strip steel arch 5 are connected by a connecting device 7 and erected in the primary sprayed concrete layer 3.
In this embodiment, the rectangular steel arch frame 4 formed by combining the honeycomb sandwich structure and the section steel is composed of i-shaped steel 41, angle steel 42, a honeycomb sandwich structure 43 and a connecting bolt 44, wherein the i-shaped steel 41 and the angle steel 42 are connected by welding, and the angle steel 42 and the honeycomb sandwich structure 43 are connected by the connecting bolt 44.
In this embodiment, the cellular sandwich structure 43 is composed of an upper sheet metal plate 45 and a lower sheet metal plate 45 sandwiching a crushable single-cell-wall perforated metal multi-level honeycomb layer 46 or a double-cell-wall perforated metal multi-level honeycomb layer 47.
In this embodiment, the single-cell-wall perforated metal multi-level honeycomb layer 46 and the double-cell-wall perforated metal multi-level honeycomb layer 47 include a plurality of honeycomb cells, and the honeycomb cells are hollow structures and have regular hexagonal cross sections. The inclined cell wall of the unit cell wall perforated metal multi-stage honeycomb structure layer 46 is provided with a plurality of round holes, and the vertical cell wall of the double-wall perforated metal multi-stage honeycomb structure layer 47 is provided with a plurality of round holes.
In this embodiment, increasing the number of layers of the single-cell-wall perforated metal multi-level honeycomb layer 46 or the double-cell-wall perforated metal multi-level honeycomb layer 47 greatly increases the rigidity of the honeycomb sandwich structure 43, and the angle steel 42 is additionally arranged below the honeycomb sandwich structure 43 to serve as a support.
In this embodiment, the i-shaped steel 41 and the angle steel 42 are welded on the same plane on one side of the tunnel surrounding rock, and the honeycomb sandwich structure 43 is also laid on the angle steel 42.
In the embodiment, the rectangular steel arch 4 formed by combining the honeycomb sandwich structure and the section steel has the width of L/2 and the length of 2L. The adjacent distance between the honeycomb sandwich structure and the rectangular steel arch 4 combined by the section steel is L, the distance between the two angle steels 42 is L/2, the angle steels 42 are connected at intervals, and the adjacent distance is L.
In this embodiment, the rectangular steel arch 4 formed by combining the honeycomb sandwich structure and the section steel can meet the deformation amount required by the steel arch under different tunnel surrounding rock conditions by adjusting the number of the single-cell-wall perforated metal multi-level honeycomb layers 46 or the double-cell-wall perforated metal multi-level honeycomb layers 47 in the honeycomb sandwich structure 43.
In this embodiment, the strength of the honeycomb sandwich structure 43 can be adjusted by adjusting the thickness of the cell walls of the honeycomb sandwich structure 43.
In this embodiment, the waterproof layer 2 is located at the bottom of the primary sprayed concrete layer 3, and the anchor rod 6 for locking feet is connected with the rectangular steel arch frame 4 and the traditional strip steel arch frame 5 which are combined by the honeycomb sandwich structure and the section steel.
While the embodiments of the present invention have been described in detail, the present invention is not limited to the specific embodiments described above. Even if various changes are made to the present invention, the essence of the present invention is not affected.
Claims (5)
1. The utility model provides a rectangle steel bow member tunnel supporting construction that honeycomb sandwich structure and shaped steel combine, a serial communication port, including secondary lining layer (1), waterproof layer (2), just prop up injection concrete layer (3), rectangle steel bow member (4) that upper portion multistage honeycomb sandwich structure and shaped steel combine, bottom multistage tradition bar steel bow member (5) and lock foot stock (6), rectangle steel bow member (4) that upper portion multistage honeycomb sandwich structure and shaped steel combine and bottom multistage tradition bar steel bow member (5) are connected by connecting device (7), and erect and prop up in injection concrete layer (3) just.
2. The cellular sandwich structure and section steel combined rectangular steel arch tunnel supporting structure is characterized in that the cellular sandwich structure and section steel combined rectangular steel arch (4) is composed of I-shaped steel (41), angle steel (42), a cellular sandwich structure (43) and connecting bolts (44), wherein the I-shaped steel (41) and the angle steel (42) are connected through welding, and the angle steel (42) and the cellular sandwich structure (43) are connected through the connecting bolts (44).
3. The honeycomb sandwich structure (43) according to claim 2, wherein the honeycomb sandwich structure (43) is composed of an upper sheet metal plate (45) and a lower sheet metal plate (45) sandwiching a crushable single-cell-wall open-pore metal multi-level honeycomb-like layer (46) or a double-cell-wall open-pore metal multi-level honeycomb-like layer (47).
4. The rectangular steel arch (4) with the combined honeycomb sandwich structure and section steel according to claim 2, characterized in that the I-shaped steel (41) and the angle steel (42) are welded on the same plane on one side of the tunnel wall rock, and the honeycomb sandwich structure (43) is laid on the angle steel (42) to make the angle steel (42) bear the stress of the wall rock while fixing the steel arch.
5. The rectangular steel arch (4) of the honeycomb sandwich structure and the section steel combination according to claim 2, wherein the rectangular steel arch (4) of the honeycomb sandwich structure and the section steel combination can meet the deformation amount of the steel arch under different tunnel wall rock conditions by adjusting the number of the cell wall open-cell metal multilevel type honeycomb layers (46) or the cell wall open-cell metal multilevel type honeycomb layers (47) in the honeycomb sandwich structure (43), and the strength of the honeycomb sandwich structure (43) can be adjusted by adjusting the thickness of the cell walls in the honeycomb sandwich structure (43).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210338069.XA CN114562297B (en) | 2022-04-01 | 2022-04-01 | Rectangular steel arch tunnel supporting structure with honeycomb sandwich structure and profile steel combined |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210338069.XA CN114562297B (en) | 2022-04-01 | 2022-04-01 | Rectangular steel arch tunnel supporting structure with honeycomb sandwich structure and profile steel combined |
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| Publication Number | Publication Date |
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| CN114562297A true CN114562297A (en) | 2022-05-31 |
| CN114562297B CN114562297B (en) | 2024-06-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060135588A (en) * | 2006-12-11 | 2006-12-29 | 계림하이텍(주) | Grout injection apparatus and a method of construction type reinforcement steel pipe |
| CN110486041A (en) * | 2019-05-24 | 2019-11-22 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of tunnel high-performance supporting construction |
| CN210768831U (en) * | 2019-04-03 | 2020-06-16 | 兰州铁道设计院有限公司 | Rigid-flexible combined supporting structure applied to weak surrounding rock tunnel |
| CN111764930A (en) * | 2020-06-05 | 2020-10-13 | 中南大学 | Tunnel supporting structure with honeycomb energy absorption device and construction method thereof |
| CN215369883U (en) * | 2021-07-26 | 2021-12-31 | 安徽省公路桥梁工程有限公司 | Step method construction of large-span tunnel is with country rock supporting construction |
| CN215761716U (en) * | 2021-08-15 | 2022-02-08 | 徐亚 | Tunnel steel bow member supporting mechanism |
| CN216008534U (en) * | 2021-11-10 | 2022-03-11 | 中铁三局集团有限公司 | Truss type connection structure for primary support steel frame of soft rock large-deformation tunnel |
-
2022
- 2022-04-01 CN CN202210338069.XA patent/CN114562297B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060135588A (en) * | 2006-12-11 | 2006-12-29 | 계림하이텍(주) | Grout injection apparatus and a method of construction type reinforcement steel pipe |
| CN210768831U (en) * | 2019-04-03 | 2020-06-16 | 兰州铁道设计院有限公司 | Rigid-flexible combined supporting structure applied to weak surrounding rock tunnel |
| CN110486041A (en) * | 2019-05-24 | 2019-11-22 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of tunnel high-performance supporting construction |
| CN111764930A (en) * | 2020-06-05 | 2020-10-13 | 中南大学 | Tunnel supporting structure with honeycomb energy absorption device and construction method thereof |
| CN215369883U (en) * | 2021-07-26 | 2021-12-31 | 安徽省公路桥梁工程有限公司 | Step method construction of large-span tunnel is with country rock supporting construction |
| CN215761716U (en) * | 2021-08-15 | 2022-02-08 | 徐亚 | Tunnel steel bow member supporting mechanism |
| CN216008534U (en) * | 2021-11-10 | 2022-03-11 | 中铁三局集团有限公司 | Truss type connection structure for primary support steel frame of soft rock large-deformation tunnel |
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| CN114562297B (en) | 2024-06-25 |
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