CN212690052U - Primary support steel frame for large-section weak surrounding rock tunnel - Google Patents
Primary support steel frame for large-section weak surrounding rock tunnel Download PDFInfo
- Publication number
- CN212690052U CN212690052U CN202021364140.4U CN202021364140U CN212690052U CN 212690052 U CN212690052 U CN 212690052U CN 202021364140 U CN202021364140 U CN 202021364140U CN 212690052 U CN212690052 U CN 212690052U
- Authority
- CN
- China
- Prior art keywords
- steel frame
- steelframe
- supporting steel
- mounting hole
- support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses a big weak country rock tunnel preliminary bracing steelframe of section, both sides the top of lower part support post all is equipped with the lateral part and supports the steelframe, both sides the lateral part supports and is equipped with the top between the steelframe and supports the steelframe, the both ends that the steelframe was supported at the top all are equipped with the hasp bead, first mounting hole and second mounting hole have fixed stop through screwed connection, the lower part and the lateral part that the steelframe was supported at the top support are equipped with supplementary fixed subassembly, both sides between the steelframe is supported through bolt fixed mounting between third mounting hole and the fourth mounting hole, the lower extreme of lower part support post is equipped with the bottom plate. The utility model discloses guaranteed the stability when top support steelframe and lateral part support steelframe installation, made things convenient for the installation of top support steelframe, supplementary fixed subassembly supports the steelframe with the top and forms the triangle-shaped structure between the steelframe with the lateral part, has improved the stability between top support steelframe and the lateral part support steelframe.
Description
Technical Field
The utility model relates to a tunnel preliminary bracing technical field, specific field is a big weak country rock tunnel preliminary bracing steelframe of section.
Background
The composite lining tunnel generally adopts primary support consisting of grid steel frames or section steel frames, anchor rods and sprayed concrete to resist the deformation of weak surrounding rocks after tunnel excavation. At present, most of the commonly used grid steel frames are formed by combining 4 main steel bars and a certain amount of stirrups. Compared with the section steel frame, the grid steel frame has the advantages of good economical efficiency, good adherence with sprayed concrete, portability, flexibility, convenience for construction and erection and the like, but also has the problems of inconvenience in installation, insufficient strength and the like. Therefore, a primary support steel frame for a weak surrounding rock tunnel is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a big weak country rock tunnel preliminary bracing steelframe of section to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a large-section weak surrounding rock tunnel primary support steel frame comprises a top support steel frame, side support steel frames and lower support columns, wherein the number of the lower support columns is 2, the top of each of two sides of the lower support columns is provided with a side support steel frame, a top support steel frame is arranged between the two side support steel frames, the two ends of each top support steel frame are provided with lock buckle ribs, the two sides of each lock buckle rib are provided with first mounting holes, one end of each side support steel frame, close to the top support steel frame, is provided with a lock buckle groove, the lock buckle groove is provided with a second mounting hole, the first mounting hole and the second mounting hole are connected with a fixing baffle through screws, an auxiliary fixing component is arranged between the lower part of the top support and the side support steel frame, the lower end of each side support steel frame is provided with a first connecting part, and the top of each lower support column is provided with a second, the upper end of second connecting portion is inserted to first connecting portion, the position that the both sides of first connecting portion and second connecting portion correspond is equipped with third mounting hole and fourth mounting hole respectively, both sides pass through bolt fixed mounting between third mounting hole and the fourth mounting hole, the lower extreme of lower part support post is equipped with the bottom plate, all be equipped with the stiffening rib between the both sides of lower part support post and the bottom plate.
Preferably, supplementary fixed subassembly includes first installation foot, the lower part fixed connection of first installation foot and top support steelframe, first installation foot articulates there is the one end of supplementary dead lever, the other end of supplementary dead lever is equipped with the second installation foot, the lateral wall fixed connection of second installation foot and lateral part support steelframe, in this embodiment, when the supplementary fixed subassembly of installation, accessible bolt or welded mode and top support steelframe and lateral part support steelframe carry out fixed mounting, supplementary fixed subassembly forms the triangle-shaped structure with between top support steelframe and the lateral part support steelframe simultaneously, has improved the stability between top support steelframe and the lateral part support steelframe.
Preferably, the top support steel frame, the side support steel frame and the lower support upright post all comprise main body frames, a plurality of construction ribs are arranged between the main body frames, and the strength of the top support steel frame, the side support steel frame and the lower support upright post is improved through the construction ribs.
Preferably, the structure muscle adopts 8 style of calligraphy strengthening rib and X type strengthening rib interval to set up, by the structure muscle that 8 style of calligraphy strengthening rib and X type strengthening rib interval set up, not only can realize the subsides with shotcrete, can provide stronger intensity and rigidity for big weak country rock tunnel preliminary bracing moreover.
Preferably, the corrosion-resistant coatings are arranged on the surfaces of the top supporting steel frame, the side supporting steel frame and the lower supporting upright post, so that the corrosion speed of the top supporting steel frame, the side supporting steel frame and the lower supporting upright post can be reduced through the corrosion-resistant coatings, and the safety of the tunnel is ensured.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a big weak surrounding rock tunnel preliminary bracing steelframe of section, insert the setting of second connecting portion through first connecting portion, can prevent that the top from supporting the steelframe and the lateral part from supporting to take place the skew between the steelframe, stability when having guaranteed top support steelframe and lateral part support steelframe installation, it supports the steelframe to install the top between the hasp recess through both sides lateral part support steelframe, carry out the joint through hasp bead and hasp recess, the installation of top support steelframe has been made things convenient for, supplementary fixed subassembly supports the steelframe and the lateral part with the top and supports and form the triangle-shaped structure between the steelframe, the stability between top support stee.
Drawings
Fig. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic side view of the lower support pillar of the present invention;
fig. 3 is an enlarged schematic view of a portion a in fig. 1.
In the figure: the novel steel frame structure comprises a top supporting steel frame 1, a side supporting steel frame 2, a lower supporting upright post 3, a locking rib 4, a first mounting hole 5, a locking groove 6, a second mounting hole 7, a fixing baffle 8, an auxiliary fixing component 9, a first mounting foot 901, an auxiliary fixing rod 902, a second mounting foot 903, a first connecting part 10, a second connecting part 11, a third mounting hole 12, a fourth mounting hole 13, a bottom plate 14, a reinforcing rib 15, a reinforcing rib 16-8, a reinforcing rib 17-X and a main body frame 18.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a large-section weak surrounding rock tunnel primary support steel frame comprises a top support steel frame 1, lateral support steel frames 2 and lower support columns, wherein the number of the lower support columns is 2, the lower support columns are installed inside a tunnel through the lower support columns, the top of the lower support columns is provided with the lateral support steel frames 2, the top support steel frame 1 is arranged between the lateral support steel frames 2 on two sides, lock buckle ribs 4 are arranged at two ends of the top support steel frame 1, first installation holes 5 are arranged on two sides of each lock buckle rib 4, a lock buckle groove 6 is arranged at one end, close to the top support steel frame 1, of each lateral support steel frame 2, a second installation hole 7 is arranged on each lock buckle groove 6, the first installation holes 5 and the second installation holes 7 are connected with fixing baffles 8 through screws, and the top support steel frame 1 is installed between the lock buckle grooves 6 of the lateral support steel frames 2 on two sides, the top supporting steel frame 1 and the side supporting steel frame 2 are fixed by installing a fixing baffle 8 between a first installing hole 5 and a second installing hole 7, an auxiliary fixing component 9 is arranged between the lower part of the top supporting steel frame 1 and the side supporting steel frame 2, the auxiliary fixing component 9 can be fixedly installed with the top supporting steel frame 1 and the side supporting steel frame 2 in a bolt or welding mode when the auxiliary fixing component 9 is installed, a triangular structure is formed between the top supporting steel frame 1 and the side supporting steel frame 2 by the auxiliary fixing component 9, the stability between the top supporting steel frame 1 and the side supporting steel frame 2 is improved, a first connecting part 10 is arranged at the lower end of each side supporting steel frame 2, a second connecting part 11 is arranged at the top of the lower supporting upright column, the first connecting part 10 is inserted into the upper end of the second connecting part 11, the corresponding positions of the two sides of the first connecting part 10 and the second connecting part 11 are respectively provided with a third mounting hole 12 and a fourth mounting hole 13, the third mounting hole 12 and the fourth mounting hole 13 are fixedly mounted on the two sides through bolts, the first connecting part 10 at the lower end of the lateral support steel frame 2 is inserted into the upper end of the second connecting part 11, the third mounting hole 12 and the fourth mounting hole 13 are fixedly mounted through bolts, the first connecting part 10 is inserted into the second connecting part 11, the offset between the top support steel frame 1 and the lateral support steel frame 2 can be prevented, the stability of the top support steel frame 1 and the lateral support steel frame 2 during mounting is ensured, the lower end of the lower support upright is provided with a bottom plate 14, reinforcing ribs 15 are arranged between the two sides of the lower support upright and the bottom plate 14, the stability between the sides of the lower support uprights and the bottom plate 14 is improved by means of reinforcing ribs 15.
Specifically, the auxiliary fixing component 9 includes a first mounting foot 901, the first mounting foot 901 is fixedly connected to the lower portion of the top support steel frame 1, the first mounting foot 901 is hinged to one end of an auxiliary fixing rod 902, the other end of the auxiliary fixing rod 902 is provided with a second mounting foot 903, the second mounting foot 903 is fixedly connected to the side wall of the side support steel frame 2, in this embodiment, when the auxiliary fixing component 9 is mounted, the auxiliary fixing component can be fixedly mounted to the top support steel frame 1 and the side support steel frame 2 by bolts or welding, and meanwhile, the auxiliary fixing component 9 forms a triangular structure between the top support steel frame 1 and the side support steel frame 2, so that the stability between the top support steel frame 1 and the side support steel frame 2 is improved.
Particularly, top support steelframe 1, lateral part support steelframe 2 and lower part support post all include main body frame 18, be equipped with a plurality of structure muscle between main body frame 18, improve the intensity that top support steelframe 1, lateral part support steelframe 2 and lower part support post through the structure muscle.
Particularly, the structure muscle adopts 8 style of calligraphy strengthening rib 16 and X type strengthening rib 17 interval to set up, by the structure muscle of 8 style of calligraphy strengthening rib 16 and X type strengthening rib 17 interval setting, not only can realize the close subsides with shotcrete, can provide stronger intensity and rigidity for the weak surrounding rock tunnel preliminary bracing of big section moreover.
Specifically, the corrosion-resistant coatings are arranged on the surfaces of the top supporting steel frame 1, the side supporting steel frame 2 and the lower supporting upright post, so that the corrosion speed of the top supporting steel frame 1, the side supporting steel frame 2 and the lower supporting upright post can be reduced through the corrosion-resistant coatings, and the safety of the tunnel is ensured.
The working principle is as follows: when the utility model is used, the lower support column is arranged in the tunnel, the first connecting part 10 at the lower end of the lateral support steel frame 2 is inserted into the upper end of the second connecting part 11, and the third mounting hole 12 and the fourth mounting hole 13 are fixedly arranged by bolts, the first connecting part 10 is inserted into the second connecting part 11, the offset between the top support steel frame 1 and the lateral support steel frame 2 can be prevented, the stability of the top support steel frame 1 and the lateral support steel frame 2 is ensured during the installation, the top support steel frame 1 is arranged between the lock catch grooves 6 of the lateral support steel frames 2 at two sides, the lock catch convex edges 4 and the lock catch grooves 6 are clamped, the installation of the top support steel frame 1 is convenient, and the fixed baffle 8 is arranged between the first mounting hole 5 and the second mounting hole 7, the top support steel frame 1 and the lateral support steel frame 2 are fixed, when the supplementary fixed subassembly 9 of installation, accessible bolt or welded mode support steelframe 1 and lateral part with the top and support steelframe 2 and carry out fixed mounting, and supplementary fixed subassembly 9 forms the triangle-shaped structure with between top support steelframe 1 and the lateral part support steelframe 2 simultaneously, has improved the stability between top support steelframe 1 and the lateral part support steelframe 2.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a weak surrounding rock tunnel preliminary bracing steelframe of big section, includes that the top supports steelframe (1), lateral part support steelframe (2) and lower part support post (3), its characterized in that: the number of the lower supporting columns (3) is 2, the top of the lower supporting columns (3) on two sides is provided with a lateral supporting steel frame (2), a top supporting steel frame (1) is arranged between the lateral supporting steel frames (2) on two sides, the two ends of the top supporting steel frame (1) are provided with lock catch convex edges (4), the two sides of each lock catch convex edge (4) are provided with first mounting holes (5), one end, close to the top supporting steel frame (1), of each lateral supporting steel frame (2) is provided with a lock catch groove (6), the lock catch groove (6) is provided with a second mounting hole (7), the first mounting hole (5) and the second mounting hole (7) are connected with a fixed baffle (8) through screws, an auxiliary fixing component (9) is arranged between the lower part of the top supporting steel frame (1) and the lateral supporting steel frame (2), and the lower end of the lateral supporting steel frame (2) is provided with a first connecting part (10, the top of lower part support post (3) is equipped with second connecting portion (11), the upper end that second connecting portion (11) were inserted in first connecting portion (10), the position that the both sides of first connecting portion (10) and second connecting portion (11) correspond is equipped with third mounting hole (12) and fourth mounting hole (13), both sides respectively through bolt fixed mounting between third mounting hole (12) and fourth mounting hole (13), the lower extreme of lower part support post (3) is equipped with bottom plate (14), all be equipped with stiffening rib (15) between the both sides of lower part support post (3) and bottom plate (14).
2. The primary support steel frame for the large-section weak surrounding rock tunnel according to claim 1, characterized in that: the auxiliary fixing assembly (9) comprises a first mounting foot (901), the first mounting foot (901) is fixedly connected with the lower portion of the top supporting steel frame (1), the first mounting foot (901) is hinged with one end of an auxiliary fixing rod (902), the other end of the auxiliary fixing rod (902) is provided with a second mounting foot (903), and the second mounting foot (903) is fixedly connected with the side wall of the side supporting steel frame (2).
3. The primary support steel frame for the large-section weak surrounding rock tunnel according to claim 1, characterized in that: the top supporting steel frame (1), the side supporting steel frame (2) and the lower supporting upright post (3) comprise main body frames (18), and a plurality of structural ribs are arranged between the main body frames (18).
4. The primary support steel frame for the large-section weak surrounding rock tunnel according to claim 3, characterized in that: the structural ribs are arranged at intervals by adopting 8-shaped reinforcing ribs (16) and X-shaped reinforcing ribs (17).
5. The primary support steel frame for the large-section weak surrounding rock tunnel according to claim 1, characterized in that: the surfaces of the top supporting steel frame (1), the side supporting steel frame (2) and the lower supporting upright post (3) are all provided with corrosion-resistant coatings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021364140.4U CN212690052U (en) | 2020-07-13 | 2020-07-13 | Primary support steel frame for large-section weak surrounding rock tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021364140.4U CN212690052U (en) | 2020-07-13 | 2020-07-13 | Primary support steel frame for large-section weak surrounding rock tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212690052U true CN212690052U (en) | 2021-03-12 |
Family
ID=74897012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021364140.4U Active CN212690052U (en) | 2020-07-13 | 2020-07-13 | Primary support steel frame for large-section weak surrounding rock tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212690052U (en) |
-
2020
- 2020-07-13 CN CN202021364140.4U patent/CN212690052U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204825914U (en) | A reinforced concrete roof beam and fish belly sill combined supporting structure for complicated plane foundation ditch | |
| CN212690052U (en) | Primary support steel frame for large-section weak surrounding rock tunnel | |
| CN210621440U (en) | Assembled rigidity arched bridge | |
| CN217105561U (en) | Temporary fixing structure for steel beam and profile steel concrete column | |
| CN109505225A (en) | A kind of safe and stable type suspension bridge and its construction technology | |
| CN212358793U (en) | Roofing steel construction support node | |
| CN221422271U (en) | Reinforced steel structure of energy-saving steel structure joint | |
| CN213741898U (en) | Spandrel girder structure is built in room | |
| CN217299289U (en) | Large-span section steel prestressed concrete composite beam | |
| CN217976266U (en) | Connecting device for tunnel primary support steel arch frame and reinforced large-diameter locking anchor rod | |
| CN216689916U (en) | Side flat welded assembled perforated steel plate shear wall structure | |
| CN216809914U (en) | Foundation pit crown beam structure | |
| CN219033676U (en) | Novel prefabricated shaped steel composite shear wall structure | |
| CN217782579U (en) | Novel square steel tube concrete column | |
| CN218323149U (en) | Light steel structure building structure for house | |
| CN216810653U (en) | Novel parapet bearing structure | |
| CN221219621U (en) | Section steel overhanging scaffold support structure | |
| CN216839842U (en) | Cross-like steel reinforced concrete column structure beam column node device | |
| CN217128195U (en) | PHC pile support construction structure for installing photovoltaic panel | |
| CN215442425U (en) | Prefabricated beam column node and prefabricated post connection structure | |
| CN213390539U (en) | Deformed steel structure of combined node | |
| CN209384374U (en) | The steel construction of assembled architecture | |
| CN220353161U (en) | Corrugated steel plate composite shear wall with frames in staggered arrangement | |
| CN217870973U (en) | Assembled steel and concrete beam connected node structure | |
| CN213867295U (en) | Assembled bridge truss structure with additional strengthening |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |