CN116498350A - Large-deformation tunnel supporting member and supporting construction method - Google Patents
Large-deformation tunnel supporting member and supporting construction method Download PDFInfo
- Publication number
- CN116498350A CN116498350A CN202310625660.8A CN202310625660A CN116498350A CN 116498350 A CN116498350 A CN 116498350A CN 202310625660 A CN202310625660 A CN 202310625660A CN 116498350 A CN116498350 A CN 116498350A
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- steel frame
- tunnel
- frame structure
- wall plate
- hole
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 59
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 117
- 239000010959 steel Substances 0.000 claims abstract description 117
- 239000004567 concrete Substances 0.000 claims abstract description 44
- 238000005507 spraying Methods 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- 238000005452 bending Methods 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000011378 shotcrete Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
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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
-
- 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- 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)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil 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 relates to a large-deformation tunnel supporting member and a supporting construction method, wherein the supporting member comprises a plurality of steel frame structures, the steel frame structures are bent along the length direction of the steel frame structures, each steel frame structure comprises a plurality of cavities, each cavity is penetrated and arranged along the length direction of the steel frame structure, at least two cavities are arranged in parallel along the length direction of a tunnel, the steel frame structures are sequentially arranged along the profile of the section of the tunnel, one side, which is attached to the tunnel wall, of the steel frame structures is an outer wall plate, the opposite side of the outer wall plate is an inner wall plate, two ends of the inner wall plate are respectively provided with a first through hole, the outer wall plate is provided with a second through hole, each cavity is communicated with one first through hole and one second through hole, the two adjacent steel frame structures are connected through a joint in a welded mode, and concrete is poured into the cavities. The invention has strong anti-torsion capability and higher section stability, the support and the surrounding rock can be closely adhered, the integrity of the tunnel surrounding rock-support system is enhanced, the support effect of the support structure is fully exerted, and the supporting effect of the surrounding rock is further mobilized to bear together.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a large-deformation tunnel supporting member and a supporting construction method.
Background
The tunnel construction practice shows that the tunnel large deformation has the basic common characteristics of reduced section, sinking arch feet, lifting arch crown, splitting arch waist, swelling base and the like, and the tunnel large deformation is compared with the conventional deformation, when the deformation amount of surrounding rock exceeds the normal regulation (20 cm) by more than 1.5 times (namely more than or equal to 30 cm), the surrounding rock deformation can be regarded as the large deformation.
For a soft rock tunnel under a high ground stress environment, the prevention of the occurrence of large deformation of the tunnel is a primary task of tunnel construction. Tunnel support is an important bearing structure for tunnel engineering and plays an important role in restraining tunnel deformation.
The tunnel is usually lined by a composite lining, including a primary support and a secondary lining, wherein the primary support maintains the tunnel stability and controls the deformation of the tunnel during construction, and bears the whole load during construction.
The primary support of the tunnel usually adopts a support mode of primary spraying concrete, anchor rods, grid arches, I-steel arches, re-spraying concrete and the like.
However, when the tunnel is greatly deformed, the phenomena of steel frame and I-steel structure distortion often occur, so that the support is further damaged and fails, tunnel profile is often developed to invade building limits, even the tunnel collapses, the site is usually involved in the repeated repair of measures such as adding temporary sleeve arches, reinforcing system anchor rods, grouting and reinforcing surrounding rocks, removing the steel frame with the limit of invasion, re-constructing a reinforced support system and the like, the safety risk is high, and investment is increased and construction period is prolonged.
To avoid the above situation, the primary support member of the tunnel needs to have high torsional rigidity and stability, and generally, the support capability of the primary support member is improved by adopting a h-steel with wide flanges or a multi-member combined steel frame, which causes problems: firstly, the supporting strength of the I-steel with the wide flange is still difficult to control the large deformation of the tunnel, so that the damage occurs; secondly, the I-steel with the wide flange and the multi-component combined steel frame are adopted, and gaps between the flange plate and the primary sprayed concrete, between the multi-component and the primary sprayed concrete are difficult to fill when the concrete is sprayed again, so that the integrity of the lining is weakened, and the deformation control of a tunnel is not facilitated; thirdly, the process of adopting the multi-component combined steel frame is complex, the occupied time of the process is increased, and the tunnel deformation, the construction period and the cost control are not facilitated.
Disclosure of Invention
The invention aims at: aiming at the problems existing in the prior art, the large-deformation tunnel supporting member and the supporting construction method are provided.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
in a first aspect, the invention provides a large-deformation tunnel supporting member, which comprises a plurality of steel frame structures, wherein the steel frame structures are bent along the length direction of the steel frame structures, each steel frame structure comprises a plurality of cavities, each cavity is penetrated and arranged along the length direction of the steel frame structure, at least two cavities are arranged in parallel along the length direction of the tunnel, the steel frame structures are sequentially arranged along the profile of the section of the tunnel, one side, attached to the tunnel wall, of each steel frame structure is an outer wall plate, the opposite side, opposite to the outer wall plate, of each steel frame structure is an inner wall plate, two ends of each inner wall plate are respectively provided with a first through hole, each outer wall plate is provided with a second through hole, each cavity is communicated with one first through hole and one second through hole, two adjacent steel frame structures are connected through joint welding, and concrete is poured into each cavity.
The large-deformation tunnel supporting member is characterized in that the steel frame structure is bent to be better closely attached to the curved surface of the tunnel hole wall, the steel frame structure is manufactured into a multi-cavity sectional material structure, the multi-cavity sectional material structure has a plurality of closed sections, strong torsion resistance and higher section stability are provided for the supporting structure, the safety of tunnel supporting is improved, the first through holes and the second through holes communicated with the cavity are arranged, the first through holes are filled with concrete to fill the cavity, the torsion, bending rigidity and structural stability of the supporting structure are further improved, and concrete flows out of the gap between the filled steel frame structure and the tunnel primary spraying concrete layer through the second through holes, so that the supporting structure is closely attached to surrounding rocks, the integrity of a supporting system of the surrounding rocks of the tunnel is enhanced, the supporting effect of the supporting structure is fully exerted, and the supporting effect of the surrounding rocks is further mobilized to bear together.
As a preferred technical solution of the present invention, the second through hole is located in the middle of the outer wall plate.
As a preferable technical scheme of the invention, the joint is inserted into the steel frame structure, and the interior of the steel frame structure and the joint are connected through the first through hole in a welding manner.
As a preferable technical scheme of the invention, two sides of the inner wall plate are connected with flange plates, and the flange plates exceed the web plates at the outer side of the steel frame structure.
As a further preferable technical scheme of the invention, two sides of the outer wall plate are connected with flange plates, and the flange plates exceed the web plates at the outer side of the steel frame structure.
As a further preferable technical scheme of the invention, the steel frame structure comprises two cavities, and the steel frame structure is III-type.
As a further preferable technical scheme of the invention, the steel frame structure is formed by welding three I-steel beams with the same curvature in parallel.
As a further preferable technical scheme of the invention, the inner wall plate, the outer wall plate and the flange plates are welded respectively through three webs with the same curvature to form the steel frame structure, the inner wall plate and the flange plates at two sides of the inner wall plate are integrally formed, and the outer wall plate and the flange plates at two sides of the outer wall plate are integrally formed.
In a second aspect, the present invention also provides a construction method of a large deformation tunnel support, using the large deformation tunnel support member as described in any one of the above, the construction method comprising the steps of:
s1, sequentially splicing the steel frame structures along the profile of the section of a tunnel at the primary support position of the tunnel, arranging joints between two adjacent steel frame structures, forming steel frame structure rings at the primary support position, and arranging a plurality of steel frame structure rings in parallel along the longitudinal direction of the tunnel;
s2, inserting the joint into the steel frame structure, and welding and connecting the joint and the web plate through the first through hole;
s3, pouring the concrete into the cavity through the first through hole, vibrating the concrete, and enabling the concrete to flow out through the second through hole to fill the gap between the outer wall plate and the tunnel primary spraying concrete layer;
s4, re-spraying concrete on the surface of the tunnel and the steel frame structure to form an initial support structure.
According to the large-deformation tunnel support construction method, the steel frame structure is bent to be better closely attached to the curved surface of the tunnel hole wall, the steel frame structure is manufactured into the multi-cavity sectional material structure, the multi-cavity sectional material structure is provided with a plurality of closed sections, strong torsion resistance and higher section stability are provided for the support structure, the safety of tunnel support is improved, the first through holes and the second through holes communicated with the cavity are arranged, the first through holes are filled with concrete to fill the cavity, torsion, bending rigidity and structural stability of the support structure are further improved, the first through holes serve as welding channels of the inner part and joints of the steel frame structure at the same time, the web plates of the adjacent steel frame structures are connected to form a whole, and concrete flows out of gaps between the filled steel frame structure and the tunnel primary spraying concrete layer through the second through holes, so that the support is closely attached to surrounding rocks of the tunnel, the integrity of the surrounding rock-support system is enhanced, the supporting function of the support structure is fully exerted, and the supporting function of the surrounding rocks is further mobilized to bear together.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
1. according to the large-deformation tunnel supporting member, the steel frame structure is bent to be better closely attached to the curved surface of the tunnel hole wall, the steel frame structure is manufactured into a multi-cavity sectional material structure, the multi-cavity sectional material structure has a plurality of closed sections, strong anti-torsion capacity and higher section stability are provided for the supporting structure, the safety of tunnel supporting is improved, the first through holes and the second through holes communicated with the cavity are arranged, the first through holes are filled with concrete to fill the cavity, the torsion, bending rigidity and structural stability of the supporting structure are further improved, and concrete flows out of the gap between the filled steel frame structure and the tunnel primary spraying concrete layer through the second through holes, so that the supporting is closely attached to surrounding rocks of the tunnel, the integrity of the surrounding rock-supporting system of the tunnel is enhanced, the supporting effect of the supporting structure is fully exerted, and the supporting effect of the surrounding rocks is further mobilized to bear together;
2. according to the large-deformation tunnel support construction method, the steel frame structure is bent and arranged to be better closely attached to the curved surface of the tunnel hole wall, the steel frame structure is manufactured into the multi-cavity sectional material structure, the multi-cavity sectional material structure has a plurality of closed sections, strong torsion resistance and higher section stability are provided for the support structure, the safety of tunnel support is improved, the first through holes and the second through holes communicated with the cavity are arranged, the first through holes are filled with concrete to fill the cavity, torsion, bending rigidity and structural stability of the support structure are further improved, the first through holes serve as welding channels of the inner part and joints of the steel frame structure at the same time, the web plates of the adjacent steel frame structures are connected to form a whole, and concrete flows out of gaps between the filled steel frame structure and the tunnel primary spraying concrete layer through the second through holes, so that the support is closely attached to surrounding rocks of the tunnel, the whole body of the tunnel surrounding rock-support system is enhanced, the supporting function of the support structure is fully exerted, and the surrounding rock is further mobilized to bear together.
Drawings
FIG. 1 is a schematic cross-sectional view of a tunnel support member;
FIG. 2 is a schematic cross-sectional view of a steel frame structure;
FIG. 3 is a schematic side view of a steel frame structure;
FIG. 4 is a schematic front view of a steel frame structure;
fig. 5 is a schematic back view of a steel frame structure.
The marks in the figure: 1-steel frame structure, 2-concrete, 3-web, 4-cavity, 5-inner wall plate, 6-outer wall plate, 7-flange plate, 8-joint, 9-first through hole and 10-second through hole.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1 to 5, the large-deformation tunnel supporting member of the present invention includes a plurality of steel frame structures 1.
As shown in fig. 3, the steel frame structure 1 is bent along the length direction thereof, and the steel frame structure 1 is manufactured in sections according to the curvature of the profile of the tunnel section when manufactured in a processing plant.
The steel frame structure 1 includes a plurality of cavity 4, every cavity 4 runs through the setting along steel frame structure 1 length direction, along tunnel length direction two at least cavity 4 side by side, in this embodiment, with the case of two cavity 4 juxtaposition setting is exemplified with fig. 2, steel frame structure 1 is the III type, wherein, steel frame structure 1 includes outer wallboard 6 and the interior wallboard 5 of relative setting, outer wallboard 6 with connect through three web 3 between the interior wallboard 5, consequently adjacent web 3 with outer wallboard 6 the interior wallboard 5 between enclose into the cavity 4 of closed cross-section.
In a specific embodiment, as shown in fig. 2 and 3, two sides of the inner wall plate 5 are connected with flange plates 7, the flange plates 7 exceed the web 3 outside the steel frame structure 1, two sides of the outer wall plate 6 are connected with flange plates 7, and the flange plates 7 exceed the web 3 outside the steel frame structure 1.
When the steel frame structure 1 is manufactured, three I-steel with the same curvature can be welded in parallel to form the III-type steel frame structure 1; the inner wall plate 5, the outer wall plate 6 and the flange plates 7 can be welded respectively through three webs 3 with the same curvature to form the steel frame structure 1, the inner wall plate 5 and the flange plates 7 on two sides of the inner wall plate are integrally formed, and the outer wall plate 6 and the flange plates 7 on two sides of the outer wall plate are integrally formed.
As shown in fig. 2, fig. 4 and fig. 5, the steel frame structure 1 is sequentially arranged along the profile of the tunnel section, one side, attached to the tunnel wall, of the steel frame structure 1 is provided with the outer wall plate 6, two ends of the inner wall plate 5 are respectively provided with a first through hole 9, the outer wall plate 6 is provided with a second through hole 10, each cavity 4 is communicated with one first through hole 9 and one second through hole 10, and the second through hole 10 is located in the middle of the outer wall plate 6.
As shown in fig. 3 to 5, two adjacent steel frame structures 1 are welded and connected through a joint 8; specifically, the joint 8 is inserted into the steel frame structure 1, and the interior of the steel frame structure 1 and the joint 8 are welded and connected through the first through hole 9, that is, the web 3 and the joint 8 can be welded through the first through hole 9 as a channel.
As shown in fig. 1, the cavity 4 is filled with concrete 2, the first through hole 9 is used for filling the cavity 4 with the concrete 2, and after the cavity 4 is filled with the concrete 2, the gap between the steel frame structure 1 and the tunnel primary spraying concrete layer is filled through the second through hole 10.
According to the large-deformation tunnel supporting member, the steel frame structure 1 is bent and arranged to be better closely attached to the curved surface of the tunnel hole wall, the steel frame structure 1 is manufactured into the sectional material structure of the multi-cavity body 4, the large-deformation tunnel supporting member has a plurality of closed sections, strong torsion resistance and higher section stability are provided for the supporting structure, the safety of tunnel supporting is improved, the first through holes 9 and the second through holes 10 communicated with the cavity body 4 are arranged, the cavity body 4 is filled with concrete 2 through the first through holes 9, the torsion, bending rigidity and structural stability of the supporting structure are further improved, the concrete 2 flows out of the gap between the filled steel frame structure 1 and the tunnel primary spraying concrete layer through the second through holes 10, so that the supporting structure is closely attached to surrounding rocks, the integrity of a tunnel surrounding rock-supporting system is enhanced, the supporting effect of the supporting structure is fully exerted, and the supporting effect of the surrounding rocks is further mobilized to bear together.
Example 2
As shown in fig. 1 to 5, a large-deformation tunnel supporting construction method according to the present invention, using the large-deformation tunnel supporting member according to embodiment 1, comprises the steps of:
s1, sequentially splicing the steel frame structures 1 along the profile of a tunnel section at the primary support position of a tunnel, arranging joints 8 between two adjacent steel frame structures 1, forming a steel frame structure 1 ring at the primary support position, and arranging a plurality of steel frame structure 1 rings in parallel along the longitudinal direction of the tunnel;
s2, inserting the joint 8 into the steel frame structure 1, and welding and connecting the joint 8 and the web 3 through the first through hole 9;
s3, pouring the concrete 2 into the cavity 4 through the first through hole 9, vibrating the concrete 2, and enabling the concrete 2 to flow out and fill the gap between the outer wall plate 6 and the tunnel primary spraying concrete layer through the second through hole 10;
s4, re-spraying concrete on the tunnel surface and the steel frame structure 1 to form an initial support structure.
According to the large-deformation tunnel supporting construction method, the steel frame structure 1 is bent and arranged to be better closely attached to the curved surface of the tunnel hole wall, the steel frame structure 1 is manufactured into the multi-cavity 4 sectional structure, the large-deformation tunnel supporting construction method is provided with a plurality of closed sections, strong torsion resistance and higher section stability are provided for the supporting structure, the safety of tunnel supporting is improved, the first through holes 9 and the second through holes 10 communicated with the cavity 4 are arranged, the first through holes 9 are filled with concrete 2 to fill the cavity 4, the torsion, bending rigidity and structural stability of the supporting structure are further improved, the first through holes 9 are simultaneously used as welding channels of the inside of the steel frame structure 1 and the joints 8, the web plates 3 of the adjacent steel frame structures 1 are connected to form a whole, the concrete 2 flows out of gaps between the filled steel frame structure 1 and the tunnel primary spraying layer through the second through holes 10, the supporting and surrounding rock sealing concrete are enabled to be attached to the surrounding rock supporting structure, the integrity of the surrounding rock of the tunnel is enhanced, the supporting structure is fully exerted, and the supporting effect of the surrounding rock supporting structure is further mobilized to bear together.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (9)
1. The utility model provides a large deformation tunnel support component, includes a plurality of steel frame construction (1), its characterized in that, steel frame construction (1) is followed self length direction and is crooked to be set up, steel frame construction (1) are including a plurality of cavity (4), every cavity (4) are followed steel frame construction (1) length direction runs through the setting, and is followed tunnel length direction and is juxtaposed two at least cavity (4), arrange in proper order along tunnel section profile steel frame construction (1), one side of steel frame construction (1) laminating tunnel cave wall is outer wall board (6), the opposite side of outer wall board (6) is interior wallboard (5), the both ends of interior wallboard (5) are equipped with first through-hole (9) respectively, be equipped with second through-hole (10) on outer wall board (6), every cavity (4) intercommunication is one first through-hole (9) and one second through-hole (10), adjacent two steel frame construction (1) are through joint (8) welded connection, pour concrete (2) in cavity (4).
2. A large deformation tunnel support according to claim 1, wherein the second through hole (10) is located in the middle of the outer wall plate (6).
3. The large deformation tunnel support member according to claim 1, wherein the joint (8) is inserted into the inside of the steel frame structure (1), and the inside of the steel frame structure (1) and the joint (8) are welded by the first through hole (9).
4. A large deformation tunnel support according to any one of claims 1-3, wherein the inner wall plate (5) is connected on both sides with flange plates (7), the flange plates (7) exceeding the web (3) outside the steel frame structure (1).
5. The large-deformation tunnel supporting component according to claim 4, wherein the two sides of the outer wall plate (6) are connected with flange plates (7), and the flange plates (7) exceed the web (3) outside the steel frame structure (1).
6. The large deformation tunnel support member according to claim 5, wherein the steel frame structure (1) comprises two of the cavities (4), and the steel frame structure (1) is iii-type.
7. The large deformation tunnel support structure according to claim 6, wherein the steel frame structure (1) is formed by welding three i-beams of the same curvature in parallel.
8. The large-deformation tunnel supporting member according to claim 6, wherein the inner wall plate (5), the outer wall plate (6) and the flange plates (7) are welded respectively through three webs (3) with the same curvature to form the steel frame structure (1), the inner wall plate (5) and the flange plates (7) on two sides of the inner wall plate are integrally formed, and the outer wall plate (6) and the flange plates (7) on two sides of the outer wall plate are integrally formed.
9. A method of constructing a large deformation tunnel support, using the large deformation tunnel support member according to any one of claims 1 to 8, the method comprising the steps of:
s1, sequentially splicing the steel frame structures (1) along the profile of a tunnel section at the primary support position of a tunnel, arranging joints (8) between two adjacent steel frame structures (1), forming steel frame structure (1) rings at the primary support position, and arranging a plurality of steel frame structure (1) rings in parallel along the longitudinal direction of the tunnel;
s2, inserting the joint (8) into the steel frame structure (1), and welding and connecting the joint (8) and the web plate (3) through the first through hole (9);
s3, pouring the concrete (2) into the cavity (4) through the first through hole (9), vibrating the concrete (2), and enabling the concrete (2) to flow out and fill the gap between the outer wall plate (6) and the tunnel primary spraying concrete layer through the second through hole (10);
s4, spraying concrete again on the surface of the tunnel and the steel frame structure (1) to form an initial supporting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310625660.8A CN116498350A (en) | 2023-05-30 | 2023-05-30 | Large-deformation tunnel supporting member and supporting construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310625660.8A CN116498350A (en) | 2023-05-30 | 2023-05-30 | Large-deformation tunnel supporting member and supporting construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116498350A true CN116498350A (en) | 2023-07-28 |
Family
ID=87320335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310625660.8A Pending CN116498350A (en) | 2023-05-30 | 2023-05-30 | Large-deformation tunnel supporting member and supporting construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116498350A (en) |
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2023
- 2023-05-30 CN CN202310625660.8A patent/CN116498350A/en active Pending
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