CN203835404U - Non-clearance strengthening system for serious cracking of existing tunnel lining arch - Google Patents
Non-clearance strengthening system for serious cracking of existing tunnel lining arch Download PDFInfo
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- CN203835404U CN203835404U CN201420255843.1U CN201420255843U CN203835404U CN 203835404 U CN203835404 U CN 203835404U CN 201420255843 U CN201420255843 U CN 201420255843U CN 203835404 U CN203835404 U CN 203835404U
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Abstract
The utility model relates to a non-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 non-clearance strengthening system, a reinforcing mesh is laid on the arch of an existing concrete lining of which one layer is chiseled in advance, multiple existing lining chisel grooves are chiseled in the reinforcing mesh in the longitudinal direction of a tunnel, an H-type steel frame is embedded in each groove, 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 intervals, and arch grouting pipes for carrying out pouring on the back of the lining to tamp cavities are embedded in the holes; W-type steel strips are fixed between the H-type steel frames. By means of the non-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 and the W-type steel strips 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, is specifically related to a kind of existing tunnel Arch lining and seriously ftractures without 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 a kind of existing tunnel Arch lining and seriously ftractures without headroom reinforcement system, can effectively process concrete cracking disease, is applicable to the serious cracking of existing tunnel Arch lining and the operating mode without headroom.
The technical scheme that the utility model adopts is:
A kind of existing tunnel Arch lining seriously ftractures without headroom reinforcement system, it is characterized in that:
Lay steel mesh reinforcement in the existing concrete-lined arch that cuts in advance one deck, in steel mesh reinforcement, along tunnel, longitudinally cutter is established the existing lining cutting raggle of multiple tracks, in existing lining cutting raggle, be embedded with H shaped steel frame, some anchor poles radially, that squeeze into country rock are set at H shaped steel frame place, and 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.
Between described sprayed mortar surface, H shaped steel frame, be fixed with W steel band of model.
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 to existing tunnel Arch lining seriously ftracture part behind carry out slip casting processing, tamp cavity, select the H profile steel frame highly little, rigidity is large and W steel band of model to coordinate steel mesh reinforcement, anchor pole, pneumatically placed concrete 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-cuts sprayed mortar after existing lining cutting, 11-W steel band of model, the existing lining cutting raggle of 12-.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the utility model is described in detail.
The related a kind of existing tunnel Arch lining of the utility model seriously ftractures without headroom reinforcement system, be applicable to tunnel Arch lining seriously ftracture, without headroom, the operating mode that 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 the existing concrete lining 1 that cuts in advance one deck, steel mesh reinforcement 3 is interior longitudinally to be cut a hole and establishes the existing lining cutting raggle 12 of multiple tracks along tunnel, in existing lining cutting raggle 12, be embedded with H shaped steel frame 5, between H shaped steel frame 5, be welded with longitudinal connecting reinforcement 6.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.Between sprayed mortar surface, H shaped steel frame 5, be fixed with W steel band of model 11.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 (5)
1. existing tunnel Arch lining seriously ftractures without a headroom reinforcement system, it is characterized in that:
Steel mesh reinforcement (3) is laid in arch in the existing concrete lining (1) that cuts in advance one deck, in steel mesh reinforcement (3), along tunnel, longitudinally cutter is established the existing lining cutting raggle of multiple tracks (12), in existing lining cutting raggle (12), be embedded with H shaped steel frame (5), 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. a kind of existing tunnel Arch lining according to claim 1 seriously ftractures without headroom reinforcement system, it is characterized in that:
Between H shaped steel frame (5), be welded with longitudinal connecting reinforcement (6).
3. a kind of existing tunnel Arch lining according to claim 2 seriously ftractures without headroom reinforcement system, it is characterized in that:
Between described sprayed mortar surface, H shaped steel frame (5), be fixed with W steel band of model (11).
4. a kind of existing tunnel Arch lining according to claim 3 seriously ftractures without 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.
5. a kind of existing tunnel Arch lining according to claim 4 seriously ftractures without 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 |
|---|---|---|---|
| CN201420255843.1U CN203835404U (en) | 2014-05-20 | 2014-05-20 | Non-clearance strengthening system for serious cracking of existing tunnel lining arch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420255843.1U CN203835404U (en) | 2014-05-20 | 2014-05-20 | Non-clearance strengthening system for serious cracking of existing tunnel lining arch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203835404U true CN203835404U (en) | 2014-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420255843.1U Active CN203835404U (en) | 2014-05-20 | 2014-05-20 | Non-clearance strengthening system for serious cracking of existing tunnel lining arch |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953362A (en) * | 2014-05-20 | 2014-07-30 | 中铁第一勘察设计院集团有限公司 | Clearance-free 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 |
| CN106285724A (en) * | 2016-10-14 | 2017-01-04 | 成都理工大学 | A kind of tunnel is by pressure type support system |
| CN112096419A (en) * | 2020-10-25 | 2020-12-18 | 山西省交通科技研发有限公司 | Supporting structure and method for repairing tunnel secondary lining damage |
-
2014
- 2014-05-20 CN CN201420255843.1U patent/CN203835404U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953362A (en) * | 2014-05-20 | 2014-07-30 | 中铁第一勘察设计院集团有限公司 | Clearance-free 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 |
| CN106285724A (en) * | 2016-10-14 | 2017-01-04 | 成都理工大学 | A kind of tunnel is by pressure type support system |
| CN106285724B (en) * | 2016-10-14 | 2018-05-08 | 成都理工大学 | A kind of tunnel is by pressure type support system |
| CN112096419A (en) * | 2020-10-25 | 2020-12-18 | 山西省交通科技研发有限公司 | Supporting structure and method for repairing tunnel secondary lining damage |
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