CN103953362A - Clearance-free strengthening system for serious cracks of existing tunnel arch lining - Google Patents
Clearance-free strengthening system for serious cracks of existing tunnel arch lining Download PDFInfo
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- CN103953362A CN103953362A CN201410211078.8A CN201410211078A CN103953362A CN 103953362 A CN103953362 A CN 103953362A CN 201410211078 A CN201410211078 A CN 201410211078A CN 103953362 A CN103953362 A CN 103953362A
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Abstract
The invention relates to a clearance-free strengthening system for serious cracks of an existing tunnel arch lining. The existing tunnel lining arch is liable to cause diseases, and under a condition of not removing for rebuilding, only proper reinforcement treatment can be performed. In the strengthening system provided by the invention, a reinforcing mesh is paved at an arch wherein a layer of the existing reinforced concrete lining is chiseled in advance, a plurality of existing lining chisel grooves are formed in the reinforcing mesh in the longitudinal direction of a tunnel, H-shaped steel frames are embedded into the reinforcing mesh, anchor rods are arranged, and the end parts of the anchor rods are fixed on the H-shaped steel frames through anchor rod base plates and connecting bolts; punching is performed between the anchor rods at intervals so as to allow arch grouting pipes used for grouting on the back of the lining and filling up holes to be embedded; W-type steel belts are fixedly arranged between the H-shaped steel frames. According to the clearance-free strengthening system provided by the invention, grouting treatment is performed on the back of the serious cracks of the existing tunnel arch lining, so as to fill up the holes, the H-shaped steel frames and the W-type steel belts are selected to be matched with the reinforcing mesh, the anchor rods and sprayed concrete to form a comprehensive strengthening system, not only can strengthening to the serious cracks of the arch be performed, but also the construction is simple, and the investment is saved.
Description
Technical field
the invention belongs to tunnel traffic field of engineering technology, be specifically related to a kind of existing tunnel Arch lining and seriously ftracture 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 being used, 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 in the tunnel using, produced lining cutting cracking, 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 the condition of not dismantling and rebuild in tunnel, 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 object of this invention is to provide a kind of existing tunnel Arch lining and seriously ftracture without headroom reinforcement system, can effectively process concrete cracking disease, be applicable to the serious cracking of existing tunnel Arch lining and without the operating mode of headroom.
The technical solution adopted in the present invention is:
Existing tunnel Arch lining seriously ftractures without headroom reinforcement system, it is characterized in that:
In in advance, cut the existing concrete-lined arch laying steel mesh reinforcement of 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 present invention has the following advantages:
The present invention 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.
Accompanying drawing explanation
Fig. 1 is cross-sectional drawing of the present invention.
Fig. 2 is layout plan of the present invention.
Fig. 3 is fragmentary detail view of the present invention.
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-.
The specific embodiment
Below in conjunction with the specific embodiment, the present invention will be described in detail.
A kind of existing tunnel Arch lining involved in the present invention 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 have been adopted, or local setting continuously longitudinal in tunnel as required, little, easy construction takes up room.Concrete structure is: in advance, cut the arch laying steel mesh reinforcement 3 of the existing concrete lining 1 of 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.In the interior sprayed mortar of existing concrete lining 1, cover H shaped steel frame 5.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 invention is not limited to embodiment, and the conversion of any equivalence that those of ordinary skills take technical solution of the present invention by reading manual of the present invention, is claim of the present invention and contains.
Claims (5)
1. existing tunnel Arch lining seriously ftractures without headroom reinforcement system, it is characterized in that:
In in advance, cut the arch laying steel mesh reinforcement (3) of the existing concrete lining (1) of 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), at H shaped steel frame (5), locate to arrange some anchor poles radially, that squeeze into country rock (2), 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. 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. 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. 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. 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 |
|---|---|---|---|
| CN201410211078.8A CN103953362A (en) | 2014-05-20 | 2014-05-20 | Clearance-free strengthening system for serious cracks of existing tunnel arch lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410211078.8A CN103953362A (en) | 2014-05-20 | 2014-05-20 | Clearance-free strengthening system for serious cracks of existing tunnel arch lining |
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| CN103953362A true CN103953362A (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410211078.8A Pending CN103953362A (en) | 2014-05-20 | 2014-05-20 | Clearance-free strengthening system for serious cracks of existing tunnel arch lining |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895581A (en) * | 2015-05-25 | 2015-09-09 | 山西省交通科学研究院 | Tunnel lining rapid repair structure based on carbon fiber woven mesh and repair method thereof |
| CN109322680A (en) * | 2018-11-08 | 2019-02-12 | 杭州图强工程材料有限公司 | Support lining and control method |
| CN110107319A (en) * | 2019-06-26 | 2019-08-09 | 洛阳理工学院 | A method of utilizing embedding arch shotcrete composite structure Strengthening Tunnel lining cutting |
| CN111894630A (en) * | 2020-06-16 | 2020-11-06 | 神华包神铁路集团有限责任公司 | Clearing structure and treatment method for tunnel brake tip defect |
| CN112096422A (en) * | 2020-10-25 | 2020-12-18 | 山西省交通科技研发有限公司 | Structure and method for repairing primary support invasion limit of large-section weak surrounding rock tunnel |
| CN113338995A (en) * | 2021-05-31 | 2021-09-03 | 北京鸿锐嘉科技发展有限公司 | Anchor rod grouting construction method for existing tunnel |
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| CN102996142A (en) * | 2012-12-25 | 2013-03-27 | 中鼎国际工程有限责任公司 | Mine tunnel supporting structure with fixed hanging rings and construction method thereof |
| CN203835404U (en) * | 2014-05-20 | 2014-09-17 | 中铁第一勘察设计院集团有限公司 | Non-clearance strengthening system for serious cracking of existing tunnel lining arch |
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| JP2008075393A (en) * | 2006-09-22 | 2008-04-03 | Jfe Engineering Kk | Steel panel, assembly thereof, and tunnel reinforcing structure and reinforcing method using the same |
| CN101230784A (en) * | 2008-01-31 | 2008-07-30 | 长安大学 | Tunnel steel arch frame lock foot anchoring stock net-spraying composite structure |
| CN202690082U (en) * | 2012-05-28 | 2013-01-23 | 中交第一公路勘察设计研究院有限公司 | Combined steel frame structure for preventing deformation and subsidence of tunnel |
| CN102996142A (en) * | 2012-12-25 | 2013-03-27 | 中鼎国际工程有限责任公司 | Mine tunnel supporting structure with fixed hanging rings and construction method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895581A (en) * | 2015-05-25 | 2015-09-09 | 山西省交通科学研究院 | Tunnel lining rapid repair structure based on carbon fiber woven mesh and repair method thereof |
| CN104895581B (en) * | 2015-05-25 | 2017-03-08 | 山西省交通科学研究院 | Structure and its restorative procedure are quickly repaired in a kind of tunnel-liner based on Carbon Fibre Textile |
| CN109322680A (en) * | 2018-11-08 | 2019-02-12 | 杭州图强工程材料有限公司 | Support lining and control method |
| CN110107319A (en) * | 2019-06-26 | 2019-08-09 | 洛阳理工学院 | A method of utilizing embedding arch shotcrete composite structure Strengthening Tunnel lining cutting |
| CN111894630A (en) * | 2020-06-16 | 2020-11-06 | 神华包神铁路集团有限责任公司 | Clearing structure and treatment method for tunnel brake tip defect |
| CN112096422A (en) * | 2020-10-25 | 2020-12-18 | 山西省交通科技研发有限公司 | Structure and method for repairing primary support invasion limit of large-section weak surrounding rock tunnel |
| CN113338995A (en) * | 2021-05-31 | 2021-09-03 | 北京鸿锐嘉科技发展有限公司 | Anchor rod grouting construction method for existing tunnel |
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Application publication date: 20140730 |