CN203835403U - Clearance strengthening system for serious cracking of existing tunnel lining arch - Google Patents
Clearance strengthening system for serious cracking of existing tunnel lining arch Download PDFInfo
- Publication number
- CN203835403U CN203835403U CN201420255811.1U CN201420255811U CN203835403U CN 203835403 U CN203835403 U CN 203835403U CN 201420255811 U CN201420255811 U CN 201420255811U CN 203835403 U CN203835403 U CN 203835403U
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- CN
- China
- Prior art keywords
- arch
- steel frame
- shaped steel
- lining
- existing
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- 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.)
- Expired - Lifetime
Links
- 238000005336 cracking Methods 0.000 title claims abstract description 15
- 238000005728 strengthening Methods 0.000 title abstract 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 42
- 239000010959 steel Substances 0.000 claims abstract description 42
- 230000002787 reinforcement Effects 0.000 claims description 21
- 239000011435 rock Substances 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 5
- 230000003014 reinforcing effect Effects 0.000 abstract 3
- 230000007547 defect Effects 0.000 abstract 1
- 201000010099 disease Diseases 0.000 description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 4
- 238000007596 consolidation process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model relates to a clearance strengthening system for serious cracking of an existing tunnel lining arch. The existing tunnel lining arch is prone to being damaged by defects, and only proper strengthening processing can be carried out on the condition of not removing or rebuilding the existing tunnel lining arch. According to the clearance strengthening system, a reinforcing mesh is laid on the arch of an existing concrete lining, multiple H-type steel frames are arranged in the reinforcing mesh in the longitudinal direction of a tunnel, anchor rods are arranged in a hit mode, and the end of each anchor rod is fixed to the corresponding H-type steel frame through an anchor rod cushion board and a connecting bolt; holes are punched between the anchor rods at the H-type steel frames at intervals, and arch grouting pipes for carrying out pouring on the back of the lining to tamp cavities are embedded in the holes; concrete is sprayed in the existing concrete lining to cover the H-type steel frames. By means of the clearance strengthening system, grouting is carried out on the back of the serious cracking portion of the existing tunnel lining arch, the cavities are tamped, the H-type steel frames are selected and used in cooperation with the reinforcing mesh, the anchor rods and pneumatically placed concrete to form the combined strengthening system, the serious cracking of the arch is strengthened, construction is easy, and investment is reduced.
Description
Technical field
the utility model belongs to tunnel traffic field of engineering technology, and being specifically related to the serious cracking of a kind of existing tunnel Arch lining has headroom reinforcement system.
Background technology
China railways, the traffic engineering such as highway are larger in the tunnel quantity of building, early stage a large amount of tunnels of building in mountain area are also still using, what have reaches projected life at that time, due to construction quality, corrosive environment, concrete durability, the impact of the factors such as strata pressure, much still produce lining cutting cracking in the tunnel using, the diseases such as flake-off piece, especially lining cutting arch more easily occurs, as develop as one pleases, can minor illness form great trouble, traffic safety is caused to significant damage, and tunnel do not dismantle rebuild condition, therefore can only carry out suitable consolidation process according to the disease order of severity, select economical rationality, easy construction, treatment measures are very crucial safely and reliably.
Summary of the invention
The purpose of this utility model is to provide the serious cracking of a kind of existing tunnel Arch lining headroom reinforcement system, can effectively process concrete cracking disease, is applicable to the operating mode that existing tunnel Arch lining seriously ftractures and has headroom.
The technical scheme that the utility model adopts is:
The serious cracking of a kind of existing tunnel Arch lining has headroom reinforcement system, it is characterized in that:
Lay steel mesh reinforcement in existing concrete-lined arch, in steel mesh reinforcement, multiple tracks H shaped steel frame is longitudinally set along tunnel, some anchor poles radially, that squeeze into country rock are set at H shaped steel frame place, anchor pole end is fixed on H shaped steel frame by roof bolt plate and connecting bolt;
Between the anchor pole at per pass H shaped steel frame place, interval punching is embedded with for tamp empty arch Grouting Pipe at lining cutting back-grouting;
In existing concrete lining, sprayed mortar covers H shaped steel frame.
Between H shaped steel frame, be welded with longitudinal connecting reinforcement.
Described existing concrete-lined arch springing place and the end of H shaped steel frame are provided with the steelframe lock pin anchor tube of squeezing into country rock.
The anchor pole at per pass H shaped steel frame place is laterally broken line and distributes, and end is staggered front to back and is fixed on H shaped steel frame edge.
The utlity model has following advantage:
The utility model is to the existing tunnel Arch lining part back-grouting that seriously ftractures, tamp cavity, select the H profile steel frame highly little, rigidity is large to coordinate steel mesh reinforcement, anchor pole to form integrative consolidation system, can carry out the radical cure of putting things right once and for all to the arch disease that seriously ftractures, have construction simple, save investment, the advantage such as safe and reliable.
Brief description of the drawings
Fig. 1 is the utility model cross-sectional drawing.
Fig. 2 is the utility model layout plan.
Fig. 3 is the utility model fragmentary detail view.
In figure, the existing concrete lining of 1-, 2-anchor pole, 3-steel mesh reinforcement, 4-arch Grouting Pipe, 5-H shaped steel frame, the longitudinal connecting reinforcement of 6-, 7-steelframe lock pin anchor tube, 8-roof bolt plate, 9-connecting bolt, 10-sprayed mortar.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the utility model is described in detail.
The serious cracking of a kind of existing tunnel Arch lining that the utility model relates to has headroom reinforcement system, be applicable to the operating mode that tunnel Arch lining seriously ftractureed, had headroom, must process, the compages such as anchor, net, band, slip casting are adopted, or local arrange continuously longitudinal in tunnel as required, little, easy construction takes up room.Concrete structure is: steel mesh reinforcement 3 is laid in the arch in existing concrete lining 1, and the interior multiple tracks H shaped steel frame 5 that longitudinally arranges along tunnel of steel mesh reinforcement 3, is welded with longitudinal connecting reinforcement 6 between H shaped steel frame 5.Some anchor poles 2 radially, that squeeze into country rock are set at H shaped steel frame 5 places, and anchor pole 2 ends are fixed on H shaped steel frame 5 by roof bolt plate 8 and connecting bolt 9.The anchor pole 2 at per pass H shaped steel frame 5 places is laterally broken line and distributes, and end is staggered front to back and is fixed on H shaped steel frame 5 edges.Between the anchor pole 2 at per pass H shaped steel frame 5 places, interval punching is embedded with for tamp empty arch Grouting Pipe 4 at lining cutting back-grouting.Cover H shaped steel frame 5 in the interior sprayed mortar of existing concrete lining 1.The arch springing place of existing concrete lining 1 and the end of H shaped steel frame 5 are provided with the steelframe lock pin anchor tube 7 of squeezing into country rock.
It is cited that content of the present utility model is not limited to embodiment, and the conversion of any equivalence that those of ordinary skill in the art take technical solutions of the utility model by reading the utility model manual, is claim of the present utility model and contains.
Claims (4)
1. the serious cracking of existing tunnel Arch lining has a headroom reinforcement system, it is characterized in that:
Steel mesh reinforcement (3) is laid in arch in existing concrete lining (1), multiple tracks H shaped steel frame (5) is longitudinally set along tunnel in steel mesh reinforcement (3), locate to arrange some anchor poles radially, that squeeze into country rock (2) at H shaped steel frame (5), anchor pole (2) end is fixed on H shaped steel frame (5) by roof bolt plate (8) and connecting bolt (9);
Between the anchor pole (2) that per pass H shaped steel frame (5) is located, interval punching is embedded with for tamp empty arch Grouting Pipe (4) at lining cutting back-grouting;
In existing concrete lining (1), sprayed mortar covers H shaped steel frame (5).
2. the serious cracking of a kind of existing tunnel Arch lining according to claim 1 has headroom reinforcement system, it is characterized in that:
Between H shaped steel frame (5), be welded with longitudinal connecting reinforcement (6).
3. the serious cracking of a kind of existing tunnel Arch lining according to claim 2 has headroom reinforcement system, it is characterized in that:
The arch springing place of described existing concrete lining (1) and the end of H shaped steel frame (5) are provided with the steelframe lock pin anchor tube (7) of squeezing into country rock.
4. the serious cracking of a kind of existing tunnel Arch lining according to claim 3 has headroom reinforcement system, it is characterized in that:
The anchor pole (2) that per pass H shaped steel frame (5) is located is laterally broken line and distributes, and end is staggered front to back and is fixed on H shaped steel frame (5) edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420255811.1U CN203835403U (en) | 2014-05-20 | 2014-05-20 | Clearance strengthening system for serious cracking of existing tunnel lining arch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420255811.1U CN203835403U (en) | 2014-05-20 | 2014-05-20 | Clearance strengthening system for serious cracking of existing tunnel lining arch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203835403U true CN203835403U (en) | 2014-09-17 |
Family
ID=51513259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420255811.1U Expired - Lifetime CN203835403U (en) | 2014-05-20 | 2014-05-20 | Clearance strengthening system for serious cracking of existing tunnel lining arch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203835403U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953361A (en) * | 2014-05-20 | 2014-07-30 | 中铁第一勘察设计院集团有限公司 | Clearance strengthening system for serious cracks of existing tunnel arch lining |
| CN104389321A (en) * | 2014-10-31 | 2015-03-04 | 中国电建集团成都勘测设计研究院有限公司 | Safety structure of underground building |
| CN104790970A (en) * | 2015-03-31 | 2015-07-22 | 同济大学 | Method for utilizing combined structure to conduct shield tunnel strengthening |
| CN107420121A (en) * | 2017-09-20 | 2017-12-01 | 中铁十四局集团有限公司 | A kind of interim steelframe locks pin construction method |
-
2014
- 2014-05-20 CN CN201420255811.1U patent/CN203835403U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953361A (en) * | 2014-05-20 | 2014-07-30 | 中铁第一勘察设计院集团有限公司 | Clearance strengthening system for serious cracks of existing tunnel arch lining |
| CN104389321A (en) * | 2014-10-31 | 2015-03-04 | 中国电建集团成都勘测设计研究院有限公司 | Safety structure of underground building |
| CN104790970A (en) * | 2015-03-31 | 2015-07-22 | 同济大学 | Method for utilizing combined structure to conduct shield tunnel strengthening |
| CN107420121A (en) * | 2017-09-20 | 2017-12-01 | 中铁十四局集团有限公司 | A kind of interim steelframe locks pin construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |