CN218509508U - Tunnel reinforcing steel frame structure - Google Patents
Tunnel reinforcing steel frame structure Download PDFInfo
- Publication number
- CN218509508U CN218509508U CN202222890797.XU CN202222890797U CN218509508U CN 218509508 U CN218509508 U CN 218509508U CN 202222890797 U CN202222890797 U CN 202222890797U CN 218509508 U CN218509508 U CN 218509508U
- Authority
- CN
- China
- Prior art keywords
- steel
- ribs
- ring main
- rib
- reinforcing
- 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
Classifications
-
- 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
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The application discloses steel frame construction is consolidated in tunnel, this steel frame construction is consolidated in tunnel includes: a plurality of steel arch frames and longitudinal connecting ribs; the two ends of each longitudinal connecting rib are respectively fixedly connected with the adjacent steel arches, a plurality of longitudinal connecting ribs are distributed between every two steel arches along the circumferential direction of the steel arches, and the longitudinal connecting ribs distributed along the axial direction of the tunnel are arranged in a staggered mode. This application is effectual makes the steel bow member connect into whole, makes the whole atress of steel bow member, greatly increased the steel bow member support intensity and rigidity, when well step and lower step are excavated simultaneously, the upper ledge bow member connects into whole, has effectively avoided the technological effect of the sunken risk of steel bow member, and then has solved the unable resultant force that forms of steel bow member among the correlation technique, has the problem of potential safety hazard.
Description
Technical Field
The application relates to the technical field of tunnel construction, in particular to a tunnel reinforcing steel frame structure.
Background
In the installation process of the steel arch centering of the tunnel, because the construction is carried out in a cycle-cycle manner, 2-3 arch centering installations are carried out in each cycle, the steel arch centering is independent in the installation process, after surrounding rock is deformed, the stress of a single arch centering is stressed, potential safety hazards exist, resultant force cannot be formed, how to ensure that the steel arch centering forms integral stress, and the stress of the surrounding rock is worth exploring.
SUMMERY OF THE UTILITY MODEL
The main purpose of this application is to provide a steel frame construction is consolidated in tunnel to solve the unable resultant force that forms of steel bow member among the correlation technique, there is the problem of potential safety hazard.
In order to achieve the above object, the present application provides a tunnel reinforcing steel frame structure, including: a plurality of steel arch frames and longitudinal connecting ribs; wherein the content of the first and second substances,
the two ends of the longitudinal connecting ribs are respectively fixedly connected with the adjacent steel arch frames, a plurality of longitudinal connecting ribs are distributed between every two steel arch frames along the circumferential direction of the steel arch frames, and the longitudinal connecting ribs are distributed along the axial direction of the tunnel in a staggered mode.
Furthermore, the steel arch frame is made of I-shaped steel, the longitudinal connecting ribs are U-shaped, the openings of the longitudinal connecting ribs face downwards, and the two ends of the longitudinal connecting ribs are fixedly welded with the inner end face of the steel arch frame.
Furthermore, the steel arch frame is made of I-shaped steel, the longitudinal connecting rib is Z-shaped, and two ends of the longitudinal connecting rib are welded and fixed with the inner side face of the steel arch frame.
Further, vertical splice bar includes in the same direction as straight portion and is located the connecting portion at straight portion both ends, connecting portion with 120 contained angles have between the straight portion, connecting portion with the medial surface welded fastening of steel bow member.
Furthermore, longitudinal connecting ribs distributed along the circumferential direction of each two steel arch frames form a splayed structure.
Furthermore, the steel arch comprises a plurality of steel frame units which are connected end to form an arc-shaped steel arch structure;
the reinforcing steel bar unit comprises an inner ring main reinforcing steel bar, an outer ring main reinforcing steel bar, a first reinforcing steel bar and a second reinforcing steel bar; wherein the content of the first and second substances,
the inner ring main reinforcements and the outer ring main reinforcements are arranged in two numbers, the two inner ring main reinforcements are axially distributed along the surrounding rock, and the two outer ring main reinforcements are axially distributed along the surrounding rock;
the first reinforcing ribs are arranged in a plurality of numbers and are respectively connected between the two inner ring main ribs, between the two outer ring main ribs and between the adjacent inner ring main ribs and the outer ring main ribs;
the second reinforcing ribs are arranged in a plurality of numbers and are respectively connected between the two inner ring main ribs, between the two outer ring main ribs and between the adjacent inner ring main ribs and the outer ring main ribs;
the first reinforcing ribs and the second reinforcing ribs are distributed in a staggered mode along the circumferential direction of the surrounding rock;
and two ends of the longitudinal connecting rib are respectively and fixedly connected with the inner ring main rib of the adjacent steel arch frame.
Furthermore, the steel frame unit further comprises a first connecting plate and a second connecting plate, the first connecting plate is fixed at two ends of the two outer ring main ribs, and the second connecting plate is fixed at two ends of the two inner ring main ribs;
and the first connecting plates between the adjacent steel frame units are fixedly connected through bolts, and the second connecting plates between the adjacent steel frame units are fixedly connected through bolts.
Furthermore, the first connecting plate is set to be L-shaped, the second connecting plate is set to be L-shaped, one side wall of the first connecting plate is welded and fixed with the outer ring main rib, and one side wall of the second connecting plate is welded and fixed with the inner ring main rib.
Further, the first reinforcing rib is provided in an "∞" type.
Furthermore, the second reinforcing rib comprises an inner rib and an outer rib which are symmetrical, and opposite sides of the inner rib and the outer rib are welded to form a K-shaped structure.
In the embodiment of the application, a plurality of steel arch frames and longitudinal connecting ribs are arranged; the two ends of the longitudinal connecting ribs are fixedly connected with the adjacent steel arches respectively, a plurality of longitudinal connecting ribs are distributed between every two steel arches along the circumferential direction of the longitudinal connecting ribs, the longitudinal connecting ribs distributed along the axial direction of the tunnel are arranged in a staggered mode, the steel arches are effectively connected into a whole, the whole stress of the steel arches is enabled, the supporting strength and the rigidity of the steel arches are greatly increased, meanwhile, when the middle step and the lower step are excavated, the upper step arches are connected into a whole, the technical effect of the sinking risk of the steel arches is effectively avoided, and the problems that the steel arches cannot form resultant force and potential safety hazards exist in the related technology are solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a schematic structural diagram according to an embodiment of the present application;
FIG. 2 is a schematic view of a connection structure of a longitudinal tie bar according to an embodiment of the present application;
FIG. 3 is a schematic view of a longitudinal tie bar according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram according to another embodiment of the present application;
FIG. 5 is a schematic view of a connection structure of longitudinal beads according to another embodiment of the present application;
FIG. 6 is a schematic view of the connection structure of the longitudinal bead according to another embodiment of the present application
FIG. 7 is a schematic structural view of a steel arch structure according to an embodiment of the present application;
FIG. 8 is a schematic partial structural view of a steel arch structure according to an embodiment of the present application;
FIG. 9 is a schematic structural diagram of a steel frame unit joint according to the embodiment of the application;
FIG. 10 is a schematic cross-sectional structure diagram of a steel frame unit joint according to the embodiment of the application;
FIG. 11 is a schematic view of an explosive structure at the joint of a steel frame unit according to the embodiment of the application;
wherein, 1 steelframe unit, 2 outer lane owner muscle, 3 inner circle owner muscle, 4 second strengthening ribs, 5 first strengthening ribs, 6 first connecting plates, 7 the concrete layer of just spouting, 8 mould concrete layer, 9 waterproof layers, 10 protective layers, 11 longitudinal connecting reinforcing bars, 12 second connecting plates, 20 steel bow member, 21 longitudinal connecting rib, 211 is in the same direction as straight portion, 212 connecting portion.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used.
In this application, the terms "upper", "lower", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "disposed," "provided," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
In the installation process of the steel arch centering of the tunnel, because the construction is carried out in a cycle-cycle manner, 2-3 arch centering installations are carried out in each cycle, the steel arch centering is independent in the installation process, after surrounding rock is deformed, the stress of a single arch centering is stressed, potential safety hazards exist, resultant force cannot be formed, how to ensure that the steel arch centering forms integral stress, and the stress of the surrounding rock is worth exploring.
In order to solve the above technical problem, as shown in fig. 1 to 6, an embodiment of the present application provides a steel frame structure for tunnel reinforcement, including: a plurality of steel arches 20 and longitudinal connecting ribs 21; wherein, the both ends of longitudinal tie bar 21 respectively with adjacent steel bow member 20 fixed connection, distribute a plurality of longitudinal tie bars 21 along its circumference between per two steel bow members 20, along the crisscross arrangement of the longitudinal tie bar 21 that the tunnel axial distributes.
In the present embodiment, the steel arch 20 is provided in a plurality and uniformly distributed along the axial direction of the tunnel, and a certain distance is maintained between the adjacent steel arches 20, and the distance is matched with the length of the longitudinal connecting rib 21. When the longitudinal connecting ribs 21 are arranged, steel bars are processed according to the distance between the steel arch frames 20, and the length of the longitudinal connecting ribs welded with the steel arch frames 20 is reserved and is generally not less than 10cm; installing the designed steel arch 20 on site, and fixing after installation; constructing a steel bar mesh, an anchor rod and a lock pin anchor pipe, and constructing according to the design; welding longitudinal connecting ribs 21, and connecting the circumferential longitudinal connecting ribs 21 with the circumferential distance of 1m or 1.2m by using a Z shape or a U shape to connect the steel frames into a whole; and the steel arch frames 20 are connected and then subjected to spray anchor support. The steel frame structure that forms in this embodiment has effectively avoided the sunken risk of steel bow member 20, has improved the whole atress of steel bow member 20 greatly, has improved the intensity and the rigidity of steelframe, should change the outstanding effect that the constructional device has the security height, economic nature is strong, the construction progress is fast.
Moreover, the structure is easy to process, produce and install and can be uniformly distributed according to the arch frame. The structure effectively enables the steel arch centering 20 to be connected into a whole, enables the steel arch centering 20 to be stressed integrally, and greatly increases the supporting strength and rigidity of the steel arch centering 20; when the middle step and the lower step are excavated, the upper step arch is connected into a whole, so that the risk of sinking of the steel arch 20 is effectively avoided.
The steel arch 20 may be configured into different structures according to different construction environments, as shown in fig. 1 to 3, in one embodiment, the steel arch 20 is configured as an i-beam, the longitudinal connecting rib 21 is configured as a "U" shape, an opening of the longitudinal connecting rib 21 faces downward, and two ends of the longitudinal connecting rib 21 are welded and fixed to an inner end surface of the steel arch 20.
Meanwhile, the longitudinal connecting rib 21 may also be provided in different forms, for example, as shown in fig. 4 to 6, the steel arch 20 is provided as an i-beam, the longitudinal connecting rib 21 is provided as a "Z" shape, and both ends of the longitudinal connecting rib 21 are welded and fixed to the inner side surface of the steel arch 20.
When the longitudinal connecting rib 21 is set to be "Z" shaped, in order to adapt to the non-horizontal structure of the two ends of the arc-shaped steel arch 20 structure, specifically, the longitudinal connecting rib 21 includes a straight portion 211 and connecting portions 212 located at the two ends of the straight portion 211, an included angle of 120 degrees is formed between the connecting portions 212 and the straight portion 211, and the connecting portions 212 are welded and fixed with the inner side surface of the steel arch 20. In order to further improve the strength of the whole structure, longitudinal connecting ribs 21 distributed along the circumferential direction of every two steel arch frames 20 form an inverted V-shaped structure.
As shown in fig. 7 to 11, the steel arch 20 comprises a plurality of steel frame units 1, and the plurality of steel frame units 1 are connected end to form an arc-shaped steel arch 20 structure;
the reinforcing steel bar unit comprises an inner ring main reinforcing steel bar 3, an outer ring main reinforcing steel bar 2, a first reinforcing steel bar 5 and a second reinforcing steel bar 4; wherein the content of the first and second substances,
the inner ring main reinforcements 3 and the outer ring main reinforcements 2 are arranged in two numbers, the two inner ring main reinforcements 3 are axially distributed along the surrounding rock, and the two outer ring main reinforcements 2 are axially distributed along the surrounding rock;
the first reinforcing ribs 5 are arranged in a plurality of numbers and are respectively connected between the two inner ring main ribs 3, between the two outer ring main ribs 2 and between the adjacent inner ring main ribs 3 and the outer ring main ribs 2;
the second reinforcing ribs 4 are arranged in a plurality and are respectively connected between the two inner ring main ribs 3, between the two outer ring main ribs 2 and between the adjacent inner ring main ribs 3 and the outer ring main ribs 2;
the first reinforcing ribs 5 and the second reinforcing ribs 4 are distributed in a staggered mode along the circumferential direction of the surrounding rock;
two ends of the longitudinal connecting rib 21 are respectively fixedly connected with the inner ring main rib 3 of the adjacent steel arch frame 20.
In this embodiment, this strengthen steel arch structure comprises a plurality of steelframe units 1 that can splice, and each steelframe unit 1's structure is the same, and every steelframe unit 1 is whole to be certain radian, and a plurality of steelframe unit 1 can form curved steel arch structure after splicing according to the order of setting for. Two inner ring main ribs 3 and two outer ring main ribs 2 in each steel frame unit 1 are respectively positioned in four directions, and connecting lines between the main ribs can form a rectangular structure. Taking the front of the steel frame unit 1 as an example, the left side is an outer ring main rib 2, the inner side is an inner ring main rib 3, the inner ring main rib 3 and the outer ring main rib 2 are connected through a first reinforcing rib 5 and a second reinforcing rib 4, and the first reinforcing rib 5 and the second reinforcing rib 4 are distributed along the circumferential direction of the main ribs in a staggered manner. In the same way, the side and the back of the steel frame unit 1 are also of the same structure, and finally, an arc-shaped steel arch structure consisting of a plurality of steel bars with different structures is formed. And an outer ring main rib 2. The arrangement of the inner ring main ribs 3, the first reinforcing ribs 5 and the second reinforcing ribs 4 enables the whole steel arch structure to have strong structural strength, and meanwhile, as all structures are reinforcing steel bars, the construction cost is also remarkably reduced, and the steel arch structure can be well applied to supporting of III-level surrounding rocks.
More specifically, in the present embodiment, the inner ring main rib 3 and the outer ring main rib 2 have similar structures, and are different only in radius, and both of them can be adopted
And (5) forming the steel bars.
Because a plurality of steel frame units 1 need to be connected end to form a final steel arch structure, in this embodiment, in order to facilitate connection of the steel frame units 1, as shown in fig. 7 to 11, the steel frame units 1 further include first connection plates 6 and second connection plates 12, the first connection plates 6 are fixed at two ends of the two outer-ring main ribs 2, and the second connection plates 12 are fixed at two ends of the two inner-ring main ribs 3; the first connecting plate 6 between the adjacent steel frame units 1 is fixedly connected through bolts, and the second connecting plate 12 between the adjacent steel frame units 1 is fixedly connected through bolts.
Specifically, both ends of each steel frame unit 1 are provided with a first connecting plate 6 and a second connecting plate 12, and the first connecting plate 6 and the second connecting plate 12 are arranged oppositely. After the adjacent steel frame units 1 are butted, the left sides of the steel frame units 1 are fixed through the adjacent first connecting plates 6, and the right sides of the steel frame units are fixed through the adjacent second connecting plates 12.
In order to facilitate the connection between the adjacent first connecting plates 6 and the connection between the adjacent second connecting plates 12, as shown in fig. 11, in this embodiment, the first connecting plates 6 are L-shaped, the second connecting plates 12 are L-shaped, a side wall of the first connecting plate 6 is welded to the outer ring main rib 2, and a side wall of the second connecting plate 12 is welded to the inner ring main rib 3.
Since the first reinforcing rib 5 and the second reinforcing rib 4 play a more critical role in maintaining the stability of the steel arch structure, in order to make the steel arch structure still have sufficient structural strength on the premise of low cost, the first reinforcing rib 5 is set to the "∞" type in this embodiment. And the second reinforcing ribs 4 comprise symmetrical inner ribs and outer ribs, and opposite sides of the inner ribs and the outer ribs are welded to form a K-shaped structure.
In order to facilitate the connection between the first reinforcing rib 5 and the corresponding main rib and the connection between the second reinforcing rib 4 and the corresponding main rib, in this embodiment, at least one first connecting section welded and fixed to the corresponding outer ring main rib 2 and the inner ring main rib 3 is disposed on each of the two sides of the first reinforcing rib 5, and the length of the first connecting section is 50-60mm. And two sides of the second reinforcing rib 4 are respectively provided with at least one second connecting section which is welded and fixed with the corresponding outer ring main rib 2 and the inner ring main rib 3, and the length of the second connecting section is 50-60mm.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A steel frame construction is consolidated in tunnel which characterized in that includes: a plurality of steel arch frames and longitudinal connecting ribs; wherein the content of the first and second substances,
the two ends of the longitudinal connecting ribs are respectively fixedly connected with the adjacent steel arch frames, a plurality of longitudinal connecting ribs are distributed between every two steel arch frames along the circumferential direction of the steel arch frames, and the longitudinal connecting ribs are distributed along the axial direction of the tunnel in a staggered mode.
2. The tunnel reinforcing steel frame structure according to claim 1, wherein: the steel arch frame is made of I-shaped steel, the longitudinal connecting ribs are U-shaped, the openings of the longitudinal connecting ribs face downwards, and the two ends of the longitudinal connecting ribs are fixedly welded with the inner end face of the steel arch frame.
3. The tunnel reinforcing steel frame structure according to claim 1, wherein: the steel arch is arranged to be I-shaped steel, the longitudinal connecting rib is arranged to be Z-shaped, and two ends of the longitudinal connecting rib are fixedly welded with the inner side face of the steel arch.
4. The tunnel reinforcing steel frame structure according to claim 2 or 3, wherein: the longitudinal connecting rib comprises a straight portion and connecting portions located at two ends of the straight portion, an included angle of 120 degrees is formed between the connecting portions and the straight portion, and the connecting portions are fixedly welded to the inner side face of the steel arch frame.
5. The tunnel reinforcing steel frame structure according to claim 4, wherein: and longitudinal connecting ribs distributed along the circumferential direction of each two steel arches form an inverted V-shaped structure.
6. The tunnel reinforcing steel frame structure according to claim 5, wherein: the steel arch comprises a plurality of steel frame units which are connected end to form an arc-shaped steel arch structure;
the steel frame unit comprises an inner ring main rib, an outer ring main rib, a first reinforcing rib and a second reinforcing rib; wherein, the first and the second end of the pipe are connected with each other,
the inner ring main reinforcements and the outer ring main reinforcements are arranged in two numbers, the two inner ring main reinforcements are axially distributed along the surrounding rock, and the two outer ring main reinforcements are axially distributed along the surrounding rock;
the first reinforcing ribs are arranged in a plurality of numbers and are respectively connected between the two inner ring main ribs, between the two outer ring main ribs and between the adjacent inner ring main ribs and the outer ring main ribs;
the second reinforcing ribs are arranged in a plurality of numbers and are respectively connected between the two inner ring main ribs, between the two outer ring main ribs and between the adjacent inner ring main ribs and the outer ring main ribs;
the first reinforcing ribs and the second reinforcing ribs are distributed in a staggered mode along the circumferential direction of the surrounding rock;
and two ends of the longitudinal connecting rib are respectively and fixedly connected with the inner ring main rib of the adjacent steel arch frame.
7. The tunnel reinforcing steel frame structure according to claim 6, wherein: the steel frame unit further comprises a first connecting plate and a second connecting plate, the first connecting plate is fixed at two ends of the two outer ring main ribs, and the second connecting plate is fixed at two ends of the two inner ring main ribs;
and the first connecting plates between the adjacent steel frame units are fixedly connected through bolts, and the second connecting plates between the adjacent steel frame units are fixedly connected through bolts.
8. The tunnel reinforcing steel frame structure according to claim 7, wherein: the first connecting plate is set to be L-shaped, the second connecting plate is set to be L-shaped, one side wall of the first connecting plate is welded and fixed with the outer ring main rib, and one side wall of the second connecting plate is welded and fixed with the inner ring main rib.
9. The tunnel reinforcing steel frame structure according to claim 8, wherein: the first reinforcing rib is arranged to be of an '∞' type.
10. The tunnel reinforcing steel frame structure according to claim 9, wherein: the second reinforcing rib comprises an inner rib and an outer rib which are symmetrical, and the opposite sides of the inner rib and the outer rib are welded to form a K-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222890797.XU CN218509508U (en) | 2022-10-31 | 2022-10-31 | Tunnel reinforcing steel frame structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222890797.XU CN218509508U (en) | 2022-10-31 | 2022-10-31 | Tunnel reinforcing steel frame structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218509508U true CN218509508U (en) | 2023-02-21 |
Family
ID=85218676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222890797.XU Active CN218509508U (en) | 2022-10-31 | 2022-10-31 | Tunnel reinforcing steel frame structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218509508U (en) |
-
2022
- 2022-10-31 CN CN202222890797.XU patent/CN218509508U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| LU102302B1 (en) | Steel reinforcement cage for use in ventilation shaft diaphragm wall, and usage method | |
| CN106090450B (en) | The box pipeline connected with circumferential obtuse angle | |
| CN104088397B (en) | A kind of prefabricated post and precast construction method thereof | |
| CN103850363A (en) | Prefabricated through hole assembly type reinforced concrete shear wall and construction method of prefabricated through hole assembly type reinforced concrete shear wall | |
| CN109184740A (en) | Assembled tube coupling and preparation method thereof | |
| JP4625796B2 (en) | Multiple arc tunnel connection structure and construction method | |
| CN114412509A (en) | Support method suitable for large deformation of mudstone tunnel | |
| CN218509508U (en) | Tunnel reinforcing steel frame structure | |
| CN210530874U (en) | Plate type grid steel frame for tunnel preliminary bracing | |
| CN208845183U (en) | Assembled tube coupling | |
| CN212296365U (en) | Corrugated plate shaft supporting structure and subway shaft | |
| CN110359488A (en) | A kind of fender member of assembled underground structure and its connecting structure with arch sheet | |
| CN215629294U (en) | Bent cap structure and pier | |
| CN209457159U (en) | A kind of connection structure of underthrust steel column and beams of concrete | |
| CN212202079U (en) | Lock foot system based on vertical displacement of effective control primary support steelframe | |
| CN212358269U (en) | Ground is wall steel reinforcement cage even | |
| CN205399827U (en) | Concrete column, roof beam, board handing -over department are with prefabricated unit -installment reinforced frame | |
| CN209523123U (en) | A kind of working job platform | |
| CN206072554U (en) | Box pipeline with the connection of circumferential obtuse angle | |
| CN218668677U (en) | Newly-increased enhancement sloping beam connected node under floor | |
| CN218509507U (en) | Reinforced steel arch frame structure for surrounding rock | |
| CN211116041U (en) | Utilize double-deck preliminary bracing structure of undercut tunnel that joist conversion control subsides | |
| CN212508305U (en) | Corrugated plate well wall supporting structure and subway vertical shaft | |
| CN216381408U (en) | Major diameter shield constructs working well construction reinforcing apparatus | |
| CN214459549U (en) | Steel-concrete combined bridge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |