CN210164483U - Repair structure of damaged section of jurisdiction in tunnel - Google Patents
Repair structure of damaged section of jurisdiction in tunnel Download PDFInfo
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- CN210164483U CN210164483U CN201920809271.XU CN201920809271U CN210164483U CN 210164483 U CN210164483 U CN 210164483U CN 201920809271 U CN201920809271 U CN 201920809271U CN 210164483 U CN210164483 U CN 210164483U
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Abstract
The utility model discloses a repair structure of a damaged tunnel segment, which comprises an inner repair structure and an outer repair structure; the inner repairing structure comprises a reinforcing component and a permanent plugging plate; the reinforcing component is fixed on the inner side of the duct piece around the damage point, a first waterproof filling layer is arranged between the reinforcing component and the duct piece, and grouting holes are formed in the reinforcing component corresponding to the first waterproof filling layer; the permanent plugging plate is arranged corresponding to the damaged point to plug the damaged point; the outer side repairing structure comprises a pouring cage and a plurality of dowel bars, wherein the pouring cage is fixed on the outer side of the damaged point and used for plugging the damaged point; one end of the inserted bar is inserted into the damaged point, the other end of the inserted bar is inserted into the pouring cage, and the pouring cage, the inserted bar and the damaged point are poured and fixed to form a pouring body; the outer surface of the pouring body is also provided with a waterproof component. The utility model discloses a repair structural strength height, waterproof performance is good, and the security is high.
Description
Technical Field
The utility model belongs to the technical field of the tunnel segment is restoreed, concretely relates to repair structure of damaged section of jurisdiction in tunnel.
Background
Along with the new round of construction of urban rail transit engineering, the subway transportation network of four-way eight reaches has been constructed for the city, when bringing more convenient trip for the citizen, has increased the scale and the degree of difficulty of operation, and the tunnel section of jurisdiction suffers external environment operation infringement and is difficult to avoid.
For example, some engineering operations on the ground surface cause underground tunnel segments to be damaged, the tunnel segments are damaged by drilling rods of drilling machines or impact hammers to be penetrated, the damaged surfaces are distributed at any position of 180-degree range above the horizontal center line of the tunnel, the damaged areas of the structures are located on the soil-facing surface on the outer side of the segments in the most serious areas, and the damaged areas of the soil-facing surface on the inner side of the segments are only 1/3-1/2 on the outer side.
The current processing method is basically performed in a tunnel, and the processing sequence is as follows: chiseling concrete fragments which do not fall or crack at the damaged part; removing the residue and dust at the cracked surface by using pressure clean water; measuring the damage range of the duct piece, and manufacturing a reinforcing mesh; drilling a pipe piece, planting bars, and binding a reinforcing mesh piece; adopting cement mortar for leveling and pasting; and (5) installing a reinforced steel plate.
However, the tunnel is buried underground deeply and is affected by external factors such as fields, existing pipelines, traffic and the like, the soil-facing surface of the outer side of the segment cannot be treated, but the tunnel does not have the treatment condition of the outer surface of the segment, so that the damage range of the outer side of the segment is exposed in the soil range and is affected by the erosion of sulfate ions and chloride ions in the soil and underground water, and the durability and stress of the segment structure exist potential safety hazards in a long time.
The tunnel segment is a bending stress component, and the reinforcing steel bars and the concrete are cooperatively subjected to bending moment and shearing force. Because after the original structural concrete of damaged department peels off, though adopt reinforcing bar net piece and cement mortar to fill and smooth the back as the reinforcement measure, cement mortar intensity, closely knit degree, adhesion, durability etc. often can't reach original section of jurisdiction mould construction concrete intensity (intensity level C50), and consider the operation influence, the dynamic load is great, very easily takes place to fall the piece once more among the long-term operation process, causes great risk to the train safety of opening the operation.
Therefore, a new technology is needed to solve the problem of the prior art that the damage repair of the segment in the tunnel has a large risk.
SUMMERY OF THE UTILITY MODEL
For solving the above-mentioned problem among the prior art, the utility model provides a repair structure of damaged section of jurisdiction in tunnel, its repair back structural strength is high, and waterproof performance is good, and the security is high.
The utility model adopts the following technical scheme:
a repairing structure of a damaged tunnel segment comprises an inner repairing structure and an outer repairing structure, wherein the inner repairing structure and the outer repairing structure are respectively fixed on the inner side and the outer side of a damaged point of the segment;
the inboard repair structure includes a reinforcement assembly and a permanent closure plate; the reinforcing component is fixed on the inner side of the duct piece around the damage point, a first waterproof filling layer is further arranged between the reinforcing component and the duct piece, and grouting holes are formed in the reinforcing component corresponding to the first waterproof filling layer; the permanent plugging plate is arc-shaped and is adaptive to the duct piece of the tunnel, the permanent plugging plate is arranged corresponding to the damage point to plug the damage point, and the permanent plugging plate is fixedly connected with the reinforcing component;
the outer side repairing structure comprises a pouring cage and a plurality of dowel bars, and the pouring cage is fixed on the outer side of the damaged point and used for plugging the damaged point; one end of the inserted bar is inserted into the damaged point, the other end of the inserted bar is inserted into the pouring cage, and the pouring cage, the inserted bar and the damaged point are poured and fixed to form a pouring body; the outer surface of the pouring body is also provided with a waterproof component.
Further as an improvement of the technical scheme of the utility model, the reinforcing component comprises a circumferential reinforcing part and an axial reinforcing part;
the circumferential reinforcing piece is arranged along the circumferential direction of the tunnel, the circumferential reinforcing piece is fixedly attached to the duct piece, the circumferential reinforcing piece is provided with a first notch matched with the permanent plugging plate, and the circumferential reinforcing piece is fixedly connected with the permanent plugging plate at the first notch;
the axial reinforcement is followed the tunnel axial sets up, the axial reinforcement is fixed on the pipe sheet and with the inner wall suits, the axial reinforcement be equipped with permanent shutoff board suit's second breach, the axial reinforcement with permanent shutoff board is in second breach department fixed connection.
Further conduct the utility model discloses technical scheme's improvement, the hoop reinforcement be the major arc type, the both ends of hoop reinforcement respectively through the steel corbel with the ballast bed both sides fixed connection in tunnel.
Further conduct the utility model discloses technical scheme's improvement, the steel bracket is equipped with the recess, be equipped with a plurality of crisscross floors each other in the recess, still be equipped with on the steel bracket with the wash port of recess intercommunication.
Further conduct the utility model discloses technical scheme's improvement, the hoop reinforcement includes a plurality of enhancement pieces, and is a plurality of the enhancement piece is followed in proper order the tunnel hoop sets up, welds fixed connection or passes through bolt fixed connection through the groove between two adjacent enhancement pieces.
Further conduct the utility model discloses technical scheme's improvement, waterproof component is including setting up waterproof coating on the pouring body surface, encircle the pouring body with the sealing rod that section of jurisdiction linking department set up and waterproof coating surface pours fashioned concrete protection layer.
Further as the utility model discloses technical scheme's improvement, waterproof coating is polyurethane waterproof coating.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a repair structure of damaged section of jurisdiction of tunnel, seal the inboard of damaged point through the permanent closure plate, and use the connection of strengthening the permanent closure plate and tunnel section of jurisdiction of the subassembly enhancement, form wholly, cooperate the atress; the plugging is poured outside the damaged point through the pouring cage and the joint bars, the inner side and the outer side of the pipe piece are respectively waterproof through the first waterproof layer and the waterproof assembly, the waterproof performance is guaranteed on the basis of the structural strength, and the whole impermeability of the inner side and the outer side of the pipe piece at the damaged point is improved.
Drawings
The technology of the present invention will be further described in detail with reference to the accompanying drawings and detailed description:
FIG. 1 is a schematic view of the overall structure;
FIG. 2 is a schematic view of an inboard repair construction and an outboard repair construction;
FIG. 3 is a schematic plan view of the installed inner repair structure in a tunnel;
FIG. 4 is a schematic cross-sectional view of the hoop reinforcement, the first waterproof filler layer, and the segment;
FIG. 5 is a schematic plan view of a steel corbel;
FIG. 6 is a schematic cross-sectional view taken along line A-A of FIG. 5;
FIG. 7 is a schematic view of two adjacent reinforcing plates connected by groove welding;
FIG. 8 is a schematic view of two adjacent reinforcing sheets being connected by bolts;
fig. 9 is a schematic view of the temporary plugging assembly installed at a point of failure.
Reference numerals:
1-inboard repair of structures; 11-a reinforcement assembly; 111-hoop reinforcement; 1111-a reinforcing sheet; 1112-a first notch; 112-axial reinforcement, 1121-second notch; 113-steel corbel; 1131-grooves; 1132-rib plate; 1133, a drain hole;
12-permanent closure plate; 13-a first waterproof filling layer;
2-repairing the structure at the outer side; 21-casting a cage; 22-a dowel bar; 23-a waterproof assembly; 231-water stop strips; 232-concrete protective layer; 233-waterproof coating;
3-a pipe piece; 31-point of failure;
4-a ballast bed;
5-temporary plugging components; 51-temporary plugging plate; 52-third water-proof filling layer; 53-channel steel.
Detailed Description
The conception, specific structure and technical effects of the present invention will be described clearly and completely with reference to the accompanying drawings and embodiments, so as to fully understand the objects, aspects and effects of the present invention. 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 same reference numbers will be used throughout the drawings to refer to the same or like parts.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Furthermore, the description of the upper, lower, left, right, etc. used in the present invention is only relative to the mutual positional relationship of the components of the present invention in the drawings.
Referring to fig. 1 to 8, a repairing structure of a damaged segment of a tunnel includes an inner repairing structure 1 and an outer repairing structure 2, wherein the inner repairing structure 1 and the outer repairing structure 2 are respectively fixed at the inner side and the outer side of a damaged point 31 of a segment 3.
As shown in fig. 1 and 3, the inner repair structure 1 includes a reinforcement member 11 and a permanent plugging plate 12.
The reinforcing component 11 is fixed on the inner side of the duct piece 3 by a plurality of bolts around the damage point 31, so that the connection stability of the reinforcing component 11 and the duct piece 3 is ensured.
As shown in fig. 4, a first waterproof filling layer 13 is further disposed between the reinforcing component 11 and the duct piece 3, and grouting holes are formed in the reinforcing component 11 corresponding to the first waterproof filling layer 13. Wherein, the first waterproof filling layer 13 is formed by injecting epoxy resin through the injection hole.
Specifically, as shown in fig. 3, the reinforcing component 11 includes a hoop reinforcement 111 and an axial reinforcement 112, and in this embodiment, the hoop reinforcement 111 is provided in two sets, which are arranged side by side in front of and behind each other.
After the annular reinforcing member 111 is connected with the permanent plugging plate 12, an arch shape corresponding to the tunnel is formed and fixed with the tunnel segment 3 to form an integral stress structure.
As shown in fig. 1 and 3, the circumferential reinforcement 111 is in a major arc shape, for convenience of installation, the circumferential reinforcement 111 is divided into a plurality of reinforcement pieces 1111, the plurality of reinforcement pieces 1111 are sequentially arranged along the circumferential direction of the tunnel, and two adjacent reinforcement pieces 1111 are fixedly connected by groove welding, as shown in fig. 7; or two adjacent reinforcing pieces 1111 are bent and fixed by bolts, as shown in fig. 8. The two ends of the annular reinforcing piece 111 are respectively fixedly connected with the two sides of the track bed 4 of the tunnel through steel brackets 113.
As shown in fig. 1, 5 and 6, the steel bracket 113 is provided with a groove 1131, a plurality of ribs 1132 are arranged in the groove 1131, and the steel bracket 113 is further provided with a drainage hole 1133 communicated with the groove 1131.
As shown in fig. 3, the axial reinforcement 112 is arranged along the tunnel axial direction, perpendicular to the circumferential reinforcement 111. The axial reinforcement 112 is fixed to the segment 3 by a plurality of bolts, and the shape of the axial reinforcement 112 is adapted to the inner wall. The axial reinforcement 112 is provided with a second notch 1121 corresponding to the permanent plugging plate 12, and the axial reinforcement 112 and the permanent plugging plate 12 are also fixedly connected by groove welding or fixedly connected by bolts after being bent at the second notch 1121. The axial reinforcement member 112 is connected to the permanent plugging plate 12 to form an elongated reinforcement structure along the axial direction of the tunnel. The purpose of installing the reinforcing component 11 on the inner side of the duct piece 3 is to improve the stress state at the damage point 31, enhance the structural rigidity, enable the duct piece 3 and the reinforcing component 11 to be stressed in a cooperative manner, and improve the bending resistance and the shearing resistance of the structure.
The circumferential reinforcement 111, the axial reinforcement 112, and the steel bracket 113 are made of a Q345B galvanized steel material, and the permanent blocking plate 12 is a galvanized steel plate. The bolts for connection adopt galvanized bolts.
The outer repair structure 2 comprises a casting cage 21 and a plurality of steel dowels 22.
As shown in fig. 1 and 2, the casting cage 21 is provided with two layers of stressed steel bars, and the length of the casting cage 21 needs to be longer than the edge of the damaged point 31 of the tunnel segment 3, so as to completely block the damaged point 31. The casting cage 21 is fixed on the outer side of the damaged point 31 and seals the damaged point 31; one end of the dowel bar 22 is inserted into the damaged point 31, the other end of the dowel bar is inserted into the pouring cage 21, and the pouring cage 21 is positioned through the dowel bar 22. The pouring cage 21, the dowel bars 22 and the damaged points 31 are poured and fixed to form a pouring body; the outer surface of the casting body is also provided with a waterproof assembly 23.
Specifically, the waterproof assembly 23 includes a waterproof coating 233 disposed on the surface of the casting body, a water stop 231 disposed around the joint of the casting body and the duct piece 3, and a concrete protective layer 232 cast on the outer surface of the waterproof coating 233. The water stop strip 231 is a water-swelling strip water stop strip, and the waterproof coating 233 is a polyurethane waterproof coating.
Based on the inner repairing structure 1 and the outer repairing structure 2, the permanent plugging plate 12 is fixedly connected to the inner side of the segment 3 of the tunnel damage point 31 through the annular reinforcing piece 111 and the axial reinforcing piece 112, so that the integral stress of the tunnel segment 3 is ensured, and the first waterproof filling layer 13 is used for preventing water and enhancing the anti-permeability capability; the filling, the outer side plugging and the water proofing of the damaged point 31 are realized through the outer side repairing structure 2; the overall repair and reinforcement of the inside and outside of the damaged spot 31 is achieved.
The utility model also provides a construction method of the repair structure of the damaged section of jurisdiction in tunnel, including following step:
s10, constructing a temporary plugging component 5 to prevent water leakage after damage from affecting installation of a repaired structure, wherein the temporary plugging component 5 comprises a temporary plugging plate 51 and a third water-proof filling layer 52; the temporary plugging plate 51 is fixed on the inner side of the damaged point 31 to plug the damaged point 31, and the third water-proof filling layer 52 is filled between the segment 3 and the gap of the temporary plugging plate 51.
Wherein, interim shutoff board 51 is fixed with tunnel segment 3 through channel-section steel 53, and the outside and the channel-section steel 53 welded fastening of interim shutoff board 51, and channel-section steel 53 then axial setting and pass through bolt fixed connection with segment 3. The temporary plugging plate 51 is arc-shaped to fit the segment 3, is made of Q345B galvanized steel, and has a size larger than that of the damaged point 31 to completely plug the damaged point 31. The installation of shutoff subassembly is in order to prevent to arouse tunnel hoop and radial deformation, unstability etc. because of section of jurisdiction 3 structure damage, bolt inefficacy, prevents simultaneously that the outside soil body of tunnel and groundwater from pouring in the tunnel.
After the temporary plugging component 5 is installed, plugging caulking seams of the duct piece 3 around the damaged point 31 by using a second waterproof filling layer to prevent leakage when a first waterproof filling layer 13 is formed by subsequent grouting, installing the reinforcing component 11, and fixedly connecting the reinforcing component 11 with the duct piece 3; when in installation, the fixed annular reinforcing piece 111 is installed firstly, and then the axial reinforcing piece 112 is installed; when the circumferential reinforcement 111 and the axial reinforcement 112 are connected by groove welding, the welding seam needs to be coated with epoxy zinc-rich antirust paint, so that the welding seam is prevented from being oxidized and rusted in the subsequent use process. The second waterproof filling layer and the third waterproof filling layer 52 are made of cement-based epoxy resin.
S20, grouting waterproof materials between the reinforcing component 11 and the pipe piece 3 through the grouting hole of the reinforcing component 11 to form a first waterproof filling layer 13 serving as an inner waterproof layer to enhance impermeability, and installing the first waterproof filling layer as shown in figure 9.
S30, performing field shielding, leveling, compacting and laying of a bearing steel plate on the upper part of a damaged point 31 of a duct piece 3, manually positioning a central point, excavating from the ground by using a full-steel-casing-pipe full-circle drilling machine, removing earthwork in a steel casing pipe by using a mechanical grab bucket after the steel casing pipe is rotated and sunk, when the steel casing pipe is perpendicular to the outer wall of the duct piece 3 at a clear distance of 1-2 m, manually excavating until the damaged point 31 is completely exposed to ensure that the whole deformation of the tunnel duct piece 3 is controlled, gradually sinking the steel casing pipe until the steel casing pipe stops at 0.3m of the top of the duct piece 3, excavating to the top of the duct piece 3 by using manual spray anchors in a small range without the protection of the steel casing pipe, and grouting and stopping water; preferably, when the steel sleeve is 1.5m away from the outer wall of the pipe piece 3, the artificial excavation is switched.
S31, removing the temporary plugging component 5, cleaning and drying the inner side and the outer side of the damaged point 31, namely removing all the temporary plugging plate 51, the channel steel 53 and the third water-proof filling layer 52, and facilitating subsequent installation of the permanent plugging plate 12 and pouring.
S40, installing a permanent plugging plate 12 on the inner side of the damaged point 31 to plug the damaged point 31, connecting and fixing the permanent plugging plate 12 and the reinforcing component 11, and painting epoxy zinc-rich antirust paint on a welding seam if groove welding is adopted for connection.
S50, smearing an interface agent on the surface of the damaged point 31, then installing the pouring cage 21 and the inserting ribs 22, and pouring the pouring cage 21, the inserting ribs 22 and the damaged point 31 to form the pouring body;
s60, after the pouring body reaches the designed strength, constructing the waterproof assembly 23 on the outer surface of the pouring body, namely coating a polyurethane waterproof coating 233 on the surface of the pouring body, closely adhering a water-swelling water stop strip 231 along the joint of the pouring body and the duct piece 3, laying geotextile on the outer surface of the pouring body, fixing the geotextile by using a rivet, and pouring a C20 fine stone concrete protective layer 232 with the thickness of 100mm to form a complete waterproof system.
Through foretell construction method, will the utility model discloses a repair structure construction of damaged section of jurisdiction in tunnel is repaired damaged point 31 of tunnel section of jurisdiction 3, and construction method safety, simple, the structure atress effect after the construction is better, and waterproof performance is good.
Other contents of the repair structure of the damaged section of jurisdiction in tunnel and construction method thereof refer to prior art, and are not repeated here.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.
Claims (7)
1. The utility model provides a repair structure of damaged section of jurisdiction of tunnel which characterized in that: the repair structure comprises an inner repair structure and an outer repair structure, wherein the inner repair structure and the outer repair structure are respectively fixed on the inner side and the outer side of a damaged point of the duct piece;
the inboard repair structure includes a reinforcement assembly and a permanent closure plate; the reinforcing component is fixed on the inner side of the duct piece around the damage point, a first waterproof filling layer is further arranged between the reinforcing component and the duct piece, and grouting holes are formed in the reinforcing component corresponding to the first waterproof filling layer; the permanent plugging plate is arc-shaped and is adaptive to the duct piece of the tunnel, the permanent plugging plate is arranged corresponding to the damage point to plug the damage point, and the permanent plugging plate is fixedly connected with the reinforcing component;
the outer side repairing structure comprises a pouring cage and a plurality of dowel bars, and the pouring cage is fixed on the outer side of the damaged point and used for plugging the damaged point; one end of the inserted bar is inserted into the damaged point, the other end of the inserted bar is inserted into the pouring cage, and the pouring cage, the inserted bar and the damaged point are poured and fixed to form a pouring body; the outer surface of the pouring body is also provided with a waterproof component.
2. The repair structure of a damaged tunnel segment as set forth in claim 1, wherein: the reinforcement assembly comprises a hoop reinforcement and an axial reinforcement;
the circumferential reinforcing piece is arranged along the circumferential direction of the tunnel, the circumferential reinforcing piece is fixedly attached to the duct piece, the circumferential reinforcing piece is provided with a first notch matched with the permanent plugging plate, and the circumferential reinforcing piece is fixedly connected with the permanent plugging plate at the first notch;
the axial reinforcement is followed the tunnel axial sets up, the axial reinforcement is fixed on the pipe sheet and with the inner wall suits, the axial reinforcement be equipped with permanent shutoff board suit's second breach, the axial reinforcement with permanent shutoff board is in second breach department fixed connection.
3. The repair structure of a damaged tunnel segment as set forth in claim 2, wherein: the hoop reinforcement be the major arc type, the both ends of hoop reinforcement respectively through the steel corbel with the ballast bed both sides fixed connection in tunnel.
4. The repair structure of a damaged tunnel segment as set forth in claim 3, wherein: the steel bracket is provided with a groove, a plurality of mutually staggered rib plates are arranged in the groove, and the steel bracket is also provided with a drain hole communicated with the groove.
5. The repair structure of a damaged tunnel segment as set forth in claim 2, wherein: the hoop reinforcement comprises a plurality of reinforcing pieces, the reinforcing pieces are sequentially arranged along the hoop direction of the tunnel, and two adjacent reinforcing pieces are fixedly connected through groove welding or through bolt fixing.
6. The repair structure of a damaged tunnel segment as set forth in claim 1, wherein: the waterproof assembly comprises a waterproof coating arranged on the surface of the pouring body, a water stop strip arranged around the joint of the pouring body and the duct piece and a concrete protective layer formed by pouring on the outer surface of the waterproof coating.
7. The repair structure of a damaged tunnel segment as set forth in claim 6, wherein: the waterproof coating is a polyurethane waterproof coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920809271.XU CN210164483U (en) | 2019-05-30 | 2019-05-30 | Repair structure of damaged section of jurisdiction in tunnel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920809271.XU CN210164483U (en) | 2019-05-30 | 2019-05-30 | Repair structure of damaged section of jurisdiction in tunnel |
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| CN210164483U true CN210164483U (en) | 2020-03-20 |
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| CN201920809271.XU Active CN210164483U (en) | 2019-05-30 | 2019-05-30 | Repair structure of damaged section of jurisdiction in tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080801A (en) * | 2019-05-30 | 2019-08-02 | 广州地铁设计研究院股份有限公司 | The repairing structure and its construction method of a kind of tunnel breakage section of jurisdiction |
-
2019
- 2019-05-30 CN CN201920809271.XU patent/CN210164483U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080801A (en) * | 2019-05-30 | 2019-08-02 | 广州地铁设计研究院股份有限公司 | The repairing structure and its construction method of a kind of tunnel breakage section of jurisdiction |
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