CN112081596B - Shield launch shaft reaction frame structure - Google Patents
Shield launch shaft reaction frame structureInfo
- Publication number
- CN112081596B CN112081596B CN202010888171.8A CN202010888171A CN112081596B CN 112081596 B CN112081596 B CN 112081596B CN 202010888171 A CN202010888171 A CN 202010888171A CN 112081596 B CN112081596 B CN 112081596B
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- CN
- China
- Prior art keywords
- reaction frame
- well
- reinforcing
- anchor rods
- shield
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
-
- 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
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention provides a shield starting well reaction frame structure, which belongs to the technical field of shield reaction frames and comprises a plurality of anchor rods, two connecting columns and a supporting seat. The anchor rods are used for anchoring into the stratum at one side of the originating well, and the anchoring direction of the anchor rods is the same as the jacking direction of the jacking pipe. The two connecting columns are used for being installed on two sides of the bottom of the originating well, and reinforcing steel bar meshes are arranged in the connecting columns. Concrete for fixing the reinforcing mesh and the anchor rods is poured into the connecting column. The supporting seat is located between two spliced poles, and the both sides of reaction frame are connected fixedly with two spliced poles respectively, and the reaction frame is used for providing the counter-force to the jacking of push pipe with the help of a plurality of stock. The anchoring anchor rods in the reaction frame structure of the shield starting well can not only strengthen the stratum at one side of the starting well, but also provide the reaction force for the shield machine, so that the space volume occupied by the reaction frame is reduced, the construction safety is ensured, and the cost input is reduced.
Description
Technical Field
The invention belongs to the technical field of shield reaction frames, and particularly relates to a shield starting well reaction frame structure.
Background
In the construction of the shield method, the reaction frame is an indispensable device for providing reaction force for the tunneling of the shield machine during the shield starting period, and the strength and the rigidity of the reaction frame are directly related to the smooth starting of the shield machine and the like. However, the existing reaction frame structure is generally provided with a plurality of supporting ribs at the rear, so that the required excavation amount of the originating well is large, and meanwhile, the volume of the originating well is increased to be reinforced to avoid collapse and other problems, so that the engineering amount of the existing reaction frame building method is large, and the construction cost is high.
Disclosure of Invention
The invention aims to provide a reaction frame structure of a shield starting well, and aims to solve the problems of large engineering quantity and high construction cost in construction of the reaction frame in the starting well.
In order to achieve the purpose, the invention adopts the technical scheme that the reaction frame structure of the shield starting well comprises:
the anchoring direction of the anchor rods is the same as the jacking direction of the jacking pipe;
The two connecting columns are used for being arranged on two sides of the bottom of the starting well, and steel bar meshes are arranged in the connecting columns and are used for being welded and fixed with a plurality of anchor rods on the same side;
the support seat is located two between the spliced pole, the reaction frame has been placed on the support seat, the both sides of reaction frame respectively with two the spliced pole is connected fixedly, the reaction frame is used for providing the counter-force to the jacking of push pipe with the help of a plurality of the stock.
As another embodiment of the application, a plurality of anchor rods are mutually parallel and are transversely arranged at intervals from top to bottom.
As another embodiment of the application, a connecting plate is fixed at the bottom of the reinforcing mesh, and the connecting plate is used for being installed on an originating well.
In another embodiment of the present application, a reinforcing rib is connected between the tops of the two connecting columns, the reinforcing rib is i-steel, and two ends of the i-steel are welded and fixed with the two reinforcing mesh respectively.
As another embodiment of the application, the ends of the anchor rods positioned at one side of the originating well are fixed with tension discs which are vertically arranged inside the connecting column.
In another embodiment of the application, a plurality of avoidance grooves for avoiding a plurality of anchor rods are formed on two side edges of the reaction frame, and a yielding groove for yielding the I-steel is formed on the top of the reaction frame.
As another embodiment of the application, the side of the connection column is provided with a plurality of reinforcing blocks for abutment against the side walls of the originating well.
As another embodiment of the present application, the two reinforcing blocks extend toward each other, and the connecting post and the reinforcing block are matched to be used for clamping the reaction frame.
As another embodiment of the present application, a fastening rod is connected between the connection post and the reaction frame, and the fastening rod penetrates through and penetrates through the connection post and the reaction frame in sequence.
As another embodiment of the application, the anchor rod is positioned on the outer peripheral surface of the originating well and is sleeved with a reinforcing sleeve, one end of the reinforcing sleeve is used for being fixed on the side wall of the originating well, and the other end of the reinforcing sleeve is used for being welded and fixed with the reinforcing mesh.
Compared with the prior art, the reaction frame structure of the shield starting well has the beneficial effects that a plurality of anchor rods are anchored at one side of the starting well in the reaction frame structure of the shield starting well, and the anchor rods are anchored in the ground. Two connecting columns are arranged on two sides of the bottom of the starting well, and the reinforcing mesh in the connecting columns is welded and fixed with a plurality of anchor rods, and the reliability of the connection of the reinforcing mesh and the anchor rods is ensured by casting concrete. A supporting seat is arranged between the two connecting columns, a reaction frame is placed on the supporting seat, and the reaction frame is respectively connected and fixed with the two connecting columns.
When the device is used, the plurality of anchor rods are anchored into the stratum at one side of the originating well, in the pipe jacking construction process, the shield can generate acting force on the reaction frame, the acting force of the reaction frame can act on the two connecting columns, and the anchoring directions of the plurality of anchor rods are the same as the jacking direction of the pipe jacking, so that the connecting columns can be kept stable relative to the originating well under the action of the plurality of anchor rods. The supporting seat is used for supporting the reaction frame, so that the anchor rod is prevented from bearing deviating acting force, and the anchor rod is ensured to be stable in the ground. According to the application, the anchored anchor rods not only can strengthen the stratum at one side of the starting well, but also can provide counter force for jacking of the jacking pipe, so that compared with the method that a plurality of supporting ribs are arranged at one side of the counter force frame, the space volume occupied by the counter force frame is reduced, the construction safety is ensured, and the cost investment is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of a reaction frame structure of a shield initiation well according to an embodiment of the present invention;
Fig. 2 is a schematic connection diagram of a reaction frame and a connection column according to a second embodiment of the present invention;
fig. 3 is a schematic connection diagram of a i-steel and a connecting column according to a second embodiment of the present invention;
fig. 4 is a schematic connection diagram of a support base and a reaction frame according to a third embodiment of the present invention;
fig. 5 is a schematic diagram of connection between a bolt and a reinforcing sleeve according to a fourth embodiment of the present invention.
In the figure, 1, an originating well, 2, a connecting column, 3, an anchor rod, 4, a tension disc, 5, a reaction frame, 6, a reinforcing block, 7, I-steel, 8, a yielding groove, 9, a yielding groove, 10, a connecting plate, 11, a supporting seat, 12, a connecting rib, 13, a fixing plate, 14, a reinforcing mesh, 15, a connecting seat and 16, and a reinforcing sleeve.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. 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.
Referring to fig. 1, 3 and 4, a description will now be given of a reaction frame structure of a shield originating well provided by the present invention. The reaction frame structure of the shield starting well comprises a plurality of anchor rods 3, two connecting columns 2 and a supporting seat 11. The anchor rods 3 are used for anchoring into the stratum at one side of the originating well 1, and the anchoring direction of the anchor rods 3 is the same as the jacking direction of the jacking pipe. Two connecting columns 2 are used for being installed on two sides of the bottom of the starting well 1, a reinforcing mesh 14 is arranged in each connecting column 2, the reinforcing mesh 14 is used for being welded and fixed with a plurality of anchor rods 3 on the same side, and concrete used for fixing the reinforcing mesh 14 and the anchor rods 3 is poured in each connecting column 2. The supporting seat 11 is located between two spliced poles 2, and reaction frame 5 has been placed on the supporting seat 11, and the both sides of reaction frame 5 are connected fixedly with two spliced poles 2 respectively, and reaction frame 5 is used for providing the counter-force to the jacking of push pipe with the help of a plurality of stock 3.
Compared with the prior art, the reaction frame structure of the shield starting well has the beneficial effects that a plurality of anchor rods 3 are anchored at one side of the starting well 1 in the reaction frame structure of the shield starting well, and the anchor rods 3 are anchored in the ground. Two connecting columns 2 are arranged on two sides of the bottom of the starting well 1, the reinforcing mesh 14 in the connecting columns 2 is welded and fixed with a plurality of anchor rods 3, and the reliability of the connection of the reinforcing mesh 14 and the anchor rods 3 is ensured by casting concrete. A supporting seat 11 is arranged between the two connecting columns 2, a reaction frame 5 is arranged on the supporting seat 11, and the reaction frame 5 is respectively connected and fixed with the two connecting columns 2.
When the device is used, the plurality of anchor rods 3 are anchored into the stratum on one side of the originating well 1, in the pipe jacking construction process, the shield can generate acting force on the reaction frame 5, the acting force of the reaction frame 5 can act on the two connecting columns 2, and the connecting columns 2 can be kept stable relative to the originating well 1 under the action of the plurality of anchor rods 3 because the anchoring direction of the plurality of anchor rods 3 is the same as the jacking direction of the pipe jacking. The supporting seat 11 is used for supporting the reaction frame 5, so that the anchor rod 3 is prevented from bearing deviating acting force, and the stability of the anchor rod in the ground is ensured. In the application, the anchored anchor rods 3 not only can strengthen the stratum at one side of the originating well 1, but also can provide counter force for jacking of the jacking pipe, compared with the method that a plurality of supporting ribs are arranged at one side of the counter force frame 5, the space volume occupied by the counter force frame 5 is reduced, the construction safety is ensured, and the cost input is reduced.
As a specific embodiment of the reaction frame structure of the shield originating well provided by the invention, referring to fig. 2, a plurality of anchor rods 3 are parallel to each other and are transversely arranged at intervals from top to bottom. Firstly, the two sides of the originating well 1 are respectively a completed section of jacking construction and an unfinished section of jacking construction. To facilitate installation of the apparatus, the length and width of the initiation well 1 are typically both greater than the inner diameter of the completed section of the jacking construction. Because the unknown factors of the stratum of the unfinished section are more, the stratum at the unfinished section needs to be reinforced during jacking construction, and particularly, the unfinished section is suitable for areas such as sand and gravel which are easy to collapse. To avoid collapse due to damage to the side walls of the originating well 1, a plurality of anchors 3 are anchored in the non-construction section for this purpose, and the plurality of anchors 3 are arranged laterally and at intervals from top to bottom. The anchor rods 3 are distributed on two sides of the central axis of the originating well 1, and the anchor rods 3 are arranged in parallel, so that the safety of the originating well 1 is improved, the arranged anchor rods 3 can reduce cost input required for reinforcing surrounding stratum on the original basis, and the construction efficiency is improved.
In order to avoid that the anchor rods 3 are subjected to forces deviating from their own axis, it is ensured that the anchor rods 3 are arranged in parallel along the axis of the jacking pipe. Meanwhile, the anchor rod 3 is a body-expanding anchor rod 3, the flaring end of the anchor rod 3 is positioned in the ground, and the top end of the anchor rod 3 is positioned in the originating well 1. And the direction from the flaring end to the top end of the anchor rod 3 is parallel and opposite to the jacking direction of the jacking pipe, so that the reaction frame 5 can be kept in a relatively stable state under the action of a plurality of anchor rods 3.
As a specific embodiment of the reaction frame structure of the shield originating well provided by the invention, referring to fig. 2,3 and 4, a connecting plate 10 is fixed at the bottom of the reinforcing mesh 14, and the connecting plate 10 is used for being installed on the originating well 1. The number of the connecting columns 2 is two, and the two connecting columns 2 are arranged in parallel. The connecting column 2 is a concrete work including a reinforcing mesh 14 inside. The reinforcing mesh 14 is placed in the formwork, then concrete is poured into the formwork, and the connecting column 2 is formed after the concrete is solidified and molded. In order to improve the connection strength between the connecting column 2 and the anchor rod 3 and ensure the connection stability of the connecting column 2 and the anchor rod 3, the end part of the anchor rod 3 and the reinforcing mesh 14 can be welded and fixed before concrete is poured, and then the connecting column and the anchor rod are poured together, so that an integrated structure is formed.
Both connecting columns 2 are installed at the bottom of the originating well 1, and in order to facilitate connection, the connection force of the connecting columns 2 with the originating well 1 is increased. The connecting plate 10 can be welded and fixed at the bottom of the reinforcing mesh 14. After being welded and fixed with the reinforcing mesh 14 and cast, the connecting plate 10 can form a unified whole, so that the connection strength of the whole connecting column 2 and the originating well 1 is improved. In the actual installation process, a plurality of bolts may be pre-buried in the originating well 1 or a plurality of expansion bolts may be fixed. The connecting plate 10 is fixedly connected with a plurality of embedded bolts or a plurality of expansion bolts.
In order to improve the joint strength of connecting plate 10 and spliced pole 2, connecting plate 10 is located the bottom of spliced pole 2 at first, and be fixed with a plurality of splice bars 12 on connecting plate 10, a plurality of splice bars 12 set up along the length direction of spliced pole 2, be provided with fixed plate 13 at the top of spliced pole 2, fixed plate 13 is connected fixedly with a plurality of splice bars 12, form stable connection structure through connecting plate 10, a plurality of splice bars 12 and fixed plate 13, the effort that bears when spliced pole 2 is great and take place to deviate from vertical problem, lead to connecting plate 10 and spliced pole 2 to connect the inefficacy problem, and splice bar 12 and welded mesh welded fastening have improved the intensity of whole spliced pole 2.
As a specific embodiment of the reaction frame structure of the shield originating well provided by the invention, please refer to fig. 1 to 5, a reinforcing rib is connected between the tops of the two connecting columns 2, the reinforcing rib is i-steel 7, and two ends of the i-steel 7 are welded and fixed with two reinforcing steel meshes 14 respectively. The two connecting columns 2 are parallel to each other and are arranged at intervals, so that the connection strength between the two connecting columns 2 is improved, the stability of the position of the connecting columns relative to the originating well 1 is guaranteed, I-steel 7 is fixedly connected to the top ends of the two connecting columns 2, the connection strength of the I-steel 7 is high, meanwhile, the I-steel 7 is convenient to obtain and process, and the connection strength of the I-steel 7 and the two connecting columns 2 is improved. The I-steel 7 is welded and fixed with the reinforcing steel bar net 14 in the connecting column 2, and the I-steel 7 is cast together with the reinforcing steel bar net 14 when the reinforcing steel bar net 14 is cast.
Because the effective area of the connection between the reinforcing mesh 14 and the I-steel 7 is low, even if the reinforcing mesh 14 and the I-steel 7 are cast together, the problem of unreliable connection still exists due to the low strength of concrete, therefore, a plurality of positioning rods can be fixed on the bottom surface of the I-steel 7 and abutted to the outer side of the reinforcing mesh 14, after casting, the positioning rods and the reinforcing mesh 14 are buried in the concrete, and the positioning rods are fixed on the I-steel 7, so that the overall connection strength is finally improved.
As a specific embodiment of the reaction frame structure of the shield launching well provided by the invention, referring to fig. 1, tension discs 4 are fixed at the ends of a plurality of anchor rods 3 positioned at one side of the launching well 1, and the tension discs 4 are vertically arranged in the connecting column 2. In order to further improve the connection stability of the anchor rods 3 and the connecting columns 2, the slipping of the anchor rods 3 and the reinforcing steel bar meshes 14 on the connecting columns 2 is avoided. The ends of the anchor rods 3 positioned at one side of the initiation well 1 are connected with tension discs 4, the tension discs 4 are cast in the connecting column 2 along with the reinforcing mesh 14, and after the concrete is solidified and formed, the tension discs 4 can be stably fixed in the connecting column 2. Simultaneously, due to the fact that the tension disc 4 is arranged, the anchor rods 3 can act on the connecting column 2 at the same time, the fact that acting forces of the anchor rods 3 on the connecting column 2 are kept relatively equal is guaranteed, and normal operation is guaranteed.
As a specific embodiment of the shield starting well reaction frame structure provided by the invention, referring to fig. 2 and 4, a plurality of avoiding grooves 9 for avoiding a plurality of anchor rods 3 are formed on two side edges of a reaction frame 5, and a yielding groove 8 for yielding an i-steel 7 is formed on the top of the reaction frame 5. Dodge the groove 9 and offer in the both sides of reaction frame 5 for install reaction frame 5 after connecting stock 3, the groove 8 of stepping down is offered at reaction frame 5 top, is used for improving the integrated level of device.
As a specific embodiment of the reaction frame structure of the shield originating well provided by the present invention, referring to fig. 1 and 5, a plurality of reinforcing blocks 6 are disposed on the side surface of the connection column 2, and the plurality of reinforcing blocks 6 are used to abut against the side wall of the originating well 1. In order to avoid the problem that the connecting column 2 cannot be stably supported only through the plurality of anchor rods 3, a plurality of reinforcing blocks 6 are arranged on one side surface, far away from the plurality of anchor rods 3, of the connecting column 2, and the reinforcing blocks 6 can be prefabricated members, rigid metal blocks or prefabricated concrete blocks. The reinforcing block 6 can be fixed and cast together with the connecting column 2. One side of the reinforcing block 6 is abutted against the inner wall of the originating well 1, and the other side of the reinforcing block is fixed on the side of the connecting column 2, and the plurality of reinforcing blocks 6 are arranged, so that the acting force of the connecting column 2 along the jacking direction of the jacking pipe is improved, and the service life of the connecting column 2 is ensured.
As a specific embodiment of the shield starting well reaction frame structure provided by the invention, referring to fig. 1 and 5, two reinforcing blocks 6 extend in opposite directions, and the connecting column 2 and the reinforcing blocks 6 are matched for clamping the reaction frame 5. In order to stabilize the clamping reaction frame 5, the reaction frame 5 can stably bear the acting force of the shield machine in the operation process, first, the reinforcing blocks 6 are arranged between the connecting column 2 and the side wall of the originating well 1, and the two opposite reinforcing blocks 6 extend in opposite directions. The reinforcing block 6 extends to the outer side of the connecting column 2, so that a clamping groove is formed between the side surface of the reinforcing block 6, which is close to the anchor rod 3, and the side surface of the connecting column 2, which is close to the reinforcing block 6, and the reaction frame 5 is matched with the clamping groove in a clamping way. Through setting up the boss 6 for reaction frame 5 not only bears the effort of spliced pole 2, can bear the effort of boss 6 simultaneously, and also boss 6 and spliced pole 2 are used for supporting stable reaction frame 5 jointly promptly, have guaranteed the reliability of connection, have avoided stock 3 to be destroyed.
As a specific embodiment of the reaction frame structure of the shield launching well provided by the application, referring to fig. 4, a fastening rod is connected between the connection column 2 and the reaction frame 5, and the fastening rod penetrates through the connection column 2 and the reaction frame 5 in sequence. In the application, in order to avoid the failure of the connection between the reaction frame 5 and the connecting column 2 and between the reaction frame 5 and the reinforcing block 6, through holes are formed in the reaction frame 5 and the connecting column 2, and fastening rods are arranged in the two through holes in a penetrating manner, so that the separation of the reaction frame 5 and the connecting column 2 is avoided, and the safety is ensured.
As a specific embodiment of the reaction frame structure of the shield originating well provided by the application, referring to fig. 5, a reinforcing sleeve 16 is sleeved on the outer peripheral surface of the anchor rod 3 located in the originating well 1, one end of the reinforcing sleeve 16 is used for being fixed on the side wall of the originating well 1, and the other end is used for being welded and fixed with the reinforcing mesh 14. Because the diameter of the anchor rods 3 is smaller, although the number of the anchor rods 3 is a plurality of in the application, the increase of the diameter of the anchor rods 3 can greatly increase the difficulty of anchoring the anchor rods 3 and simultaneously put higher requirements on a drilling machine and the like because the anchor rods 3 are standard components. For this purpose, a reinforcing sleeve 16 can be fitted over the anchor rod 3 located at the starting well. One end of the reinforcing sleeve 16 can be fixedly connected with the connecting column 2, and the other end can be fixedly connected with the side wall of the starting well opposite to the connecting column 2. The end of the reinforcing sleeve 16 far away from the connecting column 2 is connected with a connecting seat 15, and the connecting seat 15 is welded and fixed at the end of the reinforcing sleeve 16 and is respectively connected with the side wall of the originating well 1 through bolts. Due to the reinforcing sleeve 16, the acting force of the connecting column 2 on the anchor rod 3 can be shared, so that the connecting column 2 is supported and stabilized together through the reinforcing sleeve 16 and the anchor rod 3. In the application, when the reinforcing sleeve 16 is arranged, the stability of the connecting column 2 can be greatly improved, the size of excavation required by the originating well 1 is reduced, the engineering cost is reduced, and the construction efficiency is improved.
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 (7)
1. Shield constructs well reaction frame structure that originates from, its characterized in that includes:
the anchoring direction of the anchor rods is the same as the jacking direction of the jacking pipe;
The two connecting columns are used for being arranged on two sides of the bottom of the starting well, and steel bar meshes are arranged in the connecting columns and are used for being welded and fixed with a plurality of anchor rods on the same side;
The support seat is positioned between the two connecting columns, a reaction frame is placed on the support seat, two sides of the reaction frame are respectively connected and fixed with the two connecting columns, and the reaction frame is used for providing reaction force for jacking the jacking pipe by virtue of a plurality of anchor rods;
the side surface of the connecting column is provided with a plurality of reinforcing blocks, and the reinforcing blocks are used for propping against the side wall of the originating well;
the two reinforcing blocks extend in opposite directions, and the connecting columns and the reinforcing blocks are matched for clamping the reaction frame;
And a fastening rod is connected between the connecting column and the reaction frame, and penetrates through the connecting column and the reaction frame in sequence.
2. The shield-driven initiation well reaction frame structure of claim 1, wherein a plurality of the anchor rods are parallel to each other and are arranged at a lateral interval from top to bottom.
3. The shield-driven initiation well reaction frame structure of claim 1, wherein a connecting plate is fixed at the bottom of the reinforcing mesh and is used for being installed on an initiation well.
4. The shield starting well reaction frame structure according to claim 1, wherein a reinforcing rib is connected between the tops of the two connecting columns, the reinforcing rib is i-steel, and two ends of the i-steel are welded and fixed with the two reinforcing steel meshes respectively.
5. The shield initiation well reaction frame structure of claim 1, wherein the ends of a plurality of anchor rods positioned at one side of the initiation well are fixed with tension discs, and the tension discs are vertically arranged inside the connecting column.
6. The shield starting well reaction frame structure according to claim 4, wherein a plurality of avoiding grooves for avoiding a plurality of anchor rods are formed in two side edges of the reaction frame, and a yielding groove for yielding the I-steel is formed in the top of the reaction frame.
7. The shield starting well reaction frame structure according to claim 1, wherein the anchor rod is positioned on the outer circumferential surface of the starting well and sleeved with a reinforcing sleeve, one end of the reinforcing sleeve is used for being fixed on the side wall of the starting well, and the other end of the reinforcing sleeve is used for being welded and fixed with the reinforcing mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010888171.8A CN112081596B (en) | 2020-08-28 | 2020-08-28 | Shield launch shaft reaction frame structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010888171.8A CN112081596B (en) | 2020-08-28 | 2020-08-28 | Shield launch shaft reaction frame structure |
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| Publication Number | Publication Date |
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| CN112081596A CN112081596A (en) | 2020-12-15 |
| CN112081596B true CN112081596B (en) | 2025-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010888171.8A Active CN112081596B (en) | 2020-08-28 | 2020-08-28 | Shield launch shaft reaction frame structure |
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| CN (1) | CN112081596B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112081599A (en) * | 2020-08-28 | 2020-12-15 | 中电建生态环境集团有限公司 | Construction method of pipe jacking in sand and gravel formation |
| CN114396283B (en) * | 2022-02-15 | 2022-10-25 | 海南大学 | Construction method of assembled pipe-jacking working well |
| CN116892400A (en) * | 2023-08-10 | 2023-10-17 | 中铁十八局集团有限公司 | A micro-TBM initiation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155236A (en) * | 2011-02-16 | 2011-08-17 | 长江水利委员会长江勘测规划设计研究院 | Shield starting counter-force base |
| CN105114089A (en) * | 2015-07-26 | 2015-12-02 | 中铁十八局集团隧道工程有限公司 | Split type reaction frame realizing shield launching from working shaft and applied to shield type TBM (tunnel boring machine) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3088980B2 (en) * | 1997-09-15 | 2000-09-18 | 川崎重工業株式会社 | Branch shield excavation method and shield excavator capable of branch excavation |
| CN110374611B (en) * | 2019-07-26 | 2021-12-21 | 河南隧通机械有限公司 | Adjustable reaction frame for shield starting well |
-
2020
- 2020-08-28 CN CN202010888171.8A patent/CN112081596B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155236A (en) * | 2011-02-16 | 2011-08-17 | 长江水利委员会长江勘测规划设计研究院 | Shield starting counter-force base |
| CN105114089A (en) * | 2015-07-26 | 2015-12-02 | 中铁十八局集团隧道工程有限公司 | Split type reaction frame realizing shield launching from working shaft and applied to shield type TBM (tunnel boring machine) |
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|---|---|
| CN112081596A (en) | 2020-12-15 |
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