CN116927811A - Tunnel segment lining reinforcing structure and reinforcing method thereof - Google Patents
Tunnel segment lining reinforcing structure and reinforcing method thereof Download PDFInfo
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- CN116927811A CN116927811A CN202310846145.2A CN202310846145A CN116927811A CN 116927811 A CN116927811 A CN 116927811A CN 202310846145 A CN202310846145 A CN 202310846145A CN 116927811 A CN116927811 A CN 116927811A
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 125
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000002787 reinforcement Effects 0.000 claims abstract description 33
- 238000009434 installation Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 25
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 238000012544 monitoring process Methods 0.000 claims description 14
- 238000005520 cutting process Methods 0.000 claims description 11
- 230000008707 rearrangement Effects 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 238000005498 polishing Methods 0.000 claims description 10
- 239000012790 adhesive layer Substances 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 4
- 229920006333 epoxy cement Polymers 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 239000011440 grout Substances 0.000 abstract description 12
- 239000000945 filler Substances 0.000 abstract description 7
- 238000007569 slipcasting Methods 0.000 abstract description 4
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 239000012779 reinforcing material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- 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
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
- E21D11/083—Methods or devices for joining adjacent concrete segments
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- 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention provides a tunnel segment lining reinforcing structure and a reinforcing method thereof. Through hollow design's arc reinforcement piece to reduce its quality, be convenient for transport and installation, through setting up a plurality of grout chamber, can carry out the slip casting in batches, the filler that solidifies in every grout chamber passageway can independently constitute and support, avoid whole bearing structure wholeness inefficacy, simultaneously when producing secondary deformation, can be through grouting in the cavity to other grout, effectively promote reinforcement strength, avoid the filler of pouring in the past to be destroyed by further, the tunnel lining that the reinforcing ring was sheltered from is observed and maintained after the cavity wall of accessible abolished non-pouring filler in addition, and need not to demolish the whole of reinforcing ring.
Description
Technical Field
The invention relates to the field of tunnel segment lining reinforcement, in particular to a tunnel segment lining reinforcement structure and a reinforcement method thereof.
Background
In recent years, each large city in China has raised the climax of rail transit construction, and the mileage of subway tunnels is continuously delivered
And (5) increasing. However, few cities have no awareness of protection of the subway tunnel, and after or before the subway tunnel is constructed and penetrated, tunnel axis deviation and tunnel structure damage are caused due to external reasons of excavation of deep foundation pits around the subway and heavy loading of piles above the subway axis. In order to ensure the safety of the subway tunnel structure, before the operation of the subway tunnel, tunnel segment steel ring reinforcement construction technology is adopted in some cities so as to eliminate the potential safety hazard of the tunnel structure.
At present, a subway tunnel lining reinforcing structure in the industry generally adopts steel plates made of Q235/Q345B steel, and reinforcing materials with the thickness of 20-30mm are used for reinforcing construction; the whole ring reinforcement mode is adopted, the ring width is 1200mm, each ring is divided into 5-7 blocks to be manufactured, and the steel ring is required to be subjected to site lofting in advance to be determined so as to ensure the fit between the steel ring and the inner wall of the duct piece. After the steel ring is installed, fixing the steel plates by adopting concrete cracking type M16/8.8 special inverted hammer-shaped chemical anchor bolts (each steel plate is temporarily fixed by adopting an expansion bolt during installation, and then the chemical anchor bolts are permanently fixed by utilizing manual point time), and properly adjusting the positions of the chemical anchor bolts meeting hand holes and segment bolts; groove welding is adopted for splicing all steel plates in the steel ring, the height of a welding line is the same as the thickness of the steel plate, and effective measures are adopted during welding to avoid overlarge deformation of the steel plate; sealing the edge of the steel plate by using epoxy cement, and filling rigid epoxy slurry between the steel ring and the concrete segment; the position of the track bed at the bottom of the steel plate ring is slotted in advance before construction, the steel bars are cleaned after the slotting, the steel plates are installed, and gaps between the steel plates and the track bed are filled with rigid epoxy slurry compactly. The grooves between the stiffening plates should be backfilled with epoxy mortar to be level with the ballast bed surface and ensure complete coverage of the stiffening plates. The stiffening plate and the steel brace should avoid the contact rail fixing support.
In the prior art, when a tunnel is reinforced, a metal section is generally divided into a plurality of blocks according to the size of the section of the tunnel, then the metal section is assembled block by block in a manual carrying or mechanical equipment assembling mode, the whole stress of the metal section is realized, the bearing limit of a metal structure is the limit of reinforcement, however, after the reinforcement is finished in the mode, the supporting force formed by a reinforcing material is fixed, when the tunnel is secondarily deformed, a new supporting force cannot be quickly formed, and meanwhile, the weight of the metal section is large, and the installation and carrying and the inconvenience are brought forward, so that the tunnel segment lining reinforcing structure and the reinforcing method thereof are provided.
Disclosure of Invention
The invention mainly aims to provide a tunnel segment lining reinforcing structure and a reinforcing method thereof, which solve the problems that the supporting force formed by reinforcing materials is fixed after the reinforcement is completed in the prior art, when the tunnel is secondarily deformed, new supporting force cannot be formed quickly, and meanwhile, the metal section is large in weight, and the installation and the transportation are inconvenient.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a tunnel segment lining cutting reinforced structure, includes the arc reinforcement piece, and the inside of arc reinforcement piece is provided with a plurality of along the grout chamber of circumference, and the circumference both ends in grout chamber are the opening form, is provided with the slip casting mouth corresponding with every grout chamber on the intrados of arc reinforcement piece.
In a preferred scheme, ribs are arranged between two adjacent grouting cavities and used for separating each grouting cavity;
the ribs are provided with a plurality of anchor bolt holes in a penetrating mode along the circumferential direction and are used for fixing the arc-shaped reinforcing plates and the duct piece lining.
In the preferred scheme, an adhesive layer for fixing is arranged between the outer cambered surface of the arc-shaped reinforcing sheet and the wall surface of the segment lining.
In a preferred scheme, a sealing assembly is arranged in the grouting port.
In a preferred scheme, the sealing component is a sealing sheet fixedly arranged in the grouting port.
In a preferred scheme, the sealing component is a sealing cover which is installed in the grouting port in a threaded mode.
In a preferred scheme, the grouting cavity is one of cylindrical or rectangular.
The method comprises the following steps:
s1, manufacturing an arc-shaped reinforcing sheet according to tunnel segment lining lofting data and an arc-shaped reinforcing sheet reinforcing drawing;
s2, installing arc-shaped reinforcing plates in a ring shape in a tunnel, enabling a plurality of arc-shaped reinforcing plates to be in circumferential fastening connection to form a reinforcing ring, and enabling grouting cavities in the arc-shaped reinforcing plates to be communicated, wherein the fixing mode of the arc-shaped reinforcing plates can select one of anchor bolt planting or adhesive layer filling according to the structure and the material of the arc-shaped reinforcing plates;
s3, grouting a part of grouting cavities according to deformation convergence data of the tunnel lining structure or the requirement of reinforcing strength to form a primary support;
s4, judging the supporting force of the reinforcing ring to be enhanced according to the pressure-bearing monitoring data and the secondary deformation monitoring data of the reinforcing ring after installation;
s5, grouting the grouting cavity which is not subjected to grouting to form a secondary support.
In a preferred embodiment, between step S1 and step S2, further includes:
s1, pipeline rearrangement in a tunnel reinforcement range, wherein the clear distance between each pipeline and a tunnel segment after rearrangement is not less than 15cm, the pipeline separation layer height is not more than 70cm, pipeline rearrangement is strictly performed according to a limit, and related obstacles need to be cleaned;
s2, cutting and chiseling a ballast bed, wherein the cutting width of the ballast bed can be adjusted according to the bracket positions of the arc-shaped reinforcing plates, the bracket position installation is met, the bracket reinforcing rib plates are lower than the surface of the ballast bed, chiseling is carried out after cutting is finished, and then accurate lofting is carried out;
s3, plugging a pipe piece lining bolt hole and a reserved grouting hole, if the original plugging hand hole is cracked and loose in the installation range of the arc-shaped reinforcing piece, firstly knocking out the cracked part, then repairing the cracked part by using quick-drying cement, and not being higher than the original concrete pipe piece, wherein in order to ensure operation safety, the controlled plugging material falling-off event does not occur, and the hand hole plugging at the top position is completed on the same day as the installation of the top block steel plate;
s4, polishing the segment lining basal plane, polishing the interface to be sealed by adopting an angle grinder, polishing and cleaning surface floating dust, and guaranteeing the bonding sealing performance of the elastic epoxy cement; in addition, the dirt, slurry, mortar and other dirt and screws on the surface of the segment are cleaned up and properly polished.
In the preferred scheme, the method also comprises the steps of observing and maintaining the reinforcing ring to shield the segment lining and the grouted arc reinforcing piece, and specifically comprises the following steps: after the step S7 is carried out for one time, the grouting cavity which is not subjected to grouting can be broken, so that the segment lining covered by the reinforcing ring can be observed and maintained, or the health condition of the grouted arc-shaped reinforcing plate can be observed, the whole reinforcing ring is not required to be dismantled, and after the observation and maintenance work is finished, the broken grouting cavity can be repaired, so that the follow-up grouting is facilitated;
the detection method of the pressure-bearing monitoring data comprises the following steps: a pressure sensor is arranged between the segment lining and the arc reinforcing rings of the reinforcing plates;
the detection method of the secondary deformation monitoring data comprises the following steps: and monitoring the deformation of the reinforcement ring of the arc-shaped reinforcement sheet through grating detection or a distance sensor.
The invention provides a tunnel segment lining reinforcing structure and a reinforcing method thereof, wherein the quality of the tunnel segment lining reinforcing structure is reduced by virtue of an arc-shaped reinforcing sheet which is hollow, the tunnel segment lining reinforcing structure is convenient to carry and mount, grouting can be carried out in batches by virtue of a plurality of grouting cavities, a solidified filler in each grouting cavity channel can independently form a support, the integral failure of the whole supporting structure is avoided, meanwhile, when secondary deformation is generated, the reinforcing strength can be effectively improved by grouting into other grouting cavities, the filler which is filled in the previous time is prevented from being further damaged, and in addition, the tunnel lining covered by a reinforcing ring can be observed and maintained after the cavity wall of the non-filled filler is broken, so that the whole reinforcing ring is not required to be dismantled.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a block diagram of a rectangular grouting cavity with an arc reinforcing sheet according to the present invention;
FIG. 2 is a block diagram of a cylindrical grouting cavity of an arc reinforcing sheet according to the present invention;
FIG. 3 is a cross-sectional view of the grouting chamber of the present invention;
FIG. 4 is a side view of the grouting chamber structure of the present invention;
FIG. 5 is a top view of the arcuate reinforcing sheet structure of the present invention;
FIG. 6 is a block diagram of an anchor eye of the present invention;
FIG. 7 is a cross-sectional view of the anchor eye and rib connection of the present invention;
FIG. 8 is a block diagram of a first embodiment of a seal assembly of the present invention;
FIG. 9 is a block diagram of a second embodiment of a seal assembly of the present invention;
FIG. 10 is a view of the installation structure of the arc reinforcing sheet of the present invention;
in the figure: an arc-shaped reinforcing sheet 1; a rib 2; a grouting cavity 3; a grouting port 4; anchor bolt holes 5; a sealing assembly 6; a ballast bed 8; and a bracket 9.
Detailed Description
Example 1
As shown in fig. 1-9, a tunnel segment lining reinforced structure, including arc reinforcement piece 1, arc reinforcement piece 1 can be metal material or plastic material etc. and the inside of arc reinforcement piece 1 is provided with a plurality of along the grout chamber 3 of circumference, the circumference both ends of grout chamber 3 are the opening form, when being convenient for a plurality of arc reinforcement piece 1 to make up, grout chamber 3 are linked together, thereby form the reinforcing ring, wherein, the inside of arc reinforcement piece 1 is the cavity, and the both ends of arc reinforcement piece 1 circumference all are the opening form, equidistant in the cavity is provided with a plurality of rib 2, keep apart into a plurality of grout chamber 3 with the cavity, in this embodiment, the quantity of rib 2 is two, two rib 2 keep apart into three grout chamber 3 with the cavity.
Wherein, the grouting cavity 3 is one of a cylinder or a rectangle.
The inner cambered surface of the arc-shaped reinforcing sheet 1 is provided with a grouting opening 4 corresponding to each grouting cavity 3, so that the corresponding grouting cavities 3 can be conveniently grouted through the grouting openings 4, and the solidified filling agent in each grouting cavity 3 can independently form a support.
When the grouting device is used, grouting can be carried out on part of the grouting cavities 3 according to the required supporting force to form primary support, then after the pressure bearing of the reinforcing ring formed by the arc-shaped reinforcing sheets 1 is overlarge or secondary deformation is generated, grouting can be carried out on the rest grouting cavities 3 to form secondary support, and the grouting cavities 3 which are not grouted can be broken, so that tunnel lining covered by the reinforcing ring and the grouted arc-shaped reinforcing sheets 1 can be observed and maintained, and the whole reinforcing ring does not need to be dismantled.
The grouting material is epoxy resin or concrete material.
Wherein, the fixed first embodiment of arc reinforcement piece 1 and section of jurisdiction lining is: the rib 2 is provided with a plurality of anchor bolt holes 5 along the circumferential direction in a penetrating manner, and is used for fixing the arc-shaped reinforcing sheet 1 and the duct piece lining, bolts penetrate through the anchor bolt holes 5 to fix the arc-shaped reinforcing sheet 1 and the duct piece lining structure conveniently, and then an adhesive layer is filled between the arc-shaped reinforcing sheet 1 and the wall surface of the duct piece lining, so that the arc-shaped reinforcing sheet 1 made of metal materials with large weight is fixed conveniently.
The second embodiment of fixing the arc reinforcing sheet 1 with the segment lining is: an adhesive layer for fixing is directly arranged between the outer cambered surface of the arc-shaped reinforcing sheet 1 and the wall surface of the segment lining, so that the arc-shaped reinforcing sheet 1 made of plastic materials with lighter weight can be conveniently fixed.
The adhesive layer is epoxy resin or the like,
in the preferred scheme, be provided with seal assembly 6 in the slip casting mouth 4, be convenient for seal through seal assembly 6 to the slip casting mouth 4 that does not use, avoid dust and impurity to get into in the grout chamber 3.
The first embodiment of the sealing assembly 6 is: the sealing component 6 is a sealing sheet, and the sealing sheet is a plastic sheet and is fixedly arranged in the grouting opening 4.
Before grouting, grouting is carried out on the grouting cavity 3 after the plastic sheet is broken down by a drilling tool.
The second embodiment of the seal assembly 6 is: the sealing component 6 is a sealing cover which is arranged in the grouting opening 4 in a threaded manner, and a thread which is in threaded connection with the sealing cover is arranged on the inner wall of the grouting opening 4.
When the grouting device is used, the sealing cover is detached in a rotating mode, so that grouting is performed on the grouting cavity 3.
Example 2
Further described in connection with example 1, as shown in the structure of fig. 10, the method includes:
s1, manufacturing an arc-shaped reinforcing sheet 1 according to tunnel segment lining lofting data and an arc-shaped reinforcing sheet 1 reinforcing drawing;
s2, pipeline rearrangement in a tunnel reinforcement range, wherein the clear distance between the pipeline rearrangement and a tunnel segment is not less than 15cm, the clear distance can be properly adjusted according to the scene requirement of a reinforcement section bar, the pipeline division height is not more than 70cm, the pipeline rearrangement is strictly carried out according to the limit, related obstacles are required to be cleaned, the pipeline rearrangement comprises a leakage cable, a weak cable bracket, a fire tube, an illumination circuit, an illumination lamp, a 35K cable, a piezoelectric cable, a manual alarm power supply box, a contralateral weak current marking label, a mileage label, a communication box, an emergency channel handrail, an emergency channel, a grounding flat iron, an optical cable connector, a fire alarm, a measurement small mirror, anti-vage flow and the like, and the pipeline rearrangement is required to be confirmed through professional test of each pipeline;
s3, cutting and chiseling a ballast bed 8, wherein the cutting width of the ballast bed 8 is 350mm, the cutting width of the ballast bed 8 can be adjusted according to the bracket part 9 of the arc-shaped reinforcing sheet 1, the bracket part 9 is installed, the bracket reinforcing rib plate is lower than the surface of the ballast bed, chiseling is performed after cutting is completed, and then accurate lofting is performed;
s4, plugging a pipe piece lining bolt hole and a reserved grouting hole, if the original plugging hand hole is cracked and loose in the installation range of the arc-shaped reinforcing sheet 1, firstly knocking out the cracked part, then repairing the cracked part by using quick-setting cement, and not being higher than the original concrete pipe piece, wherein the hand hole plugging at the top position is implemented on the same day of installing a top block steel plate in order to ensure operation safety and prevent controlled plugging material from falling off;
s5, polishing the segment lining basal plane, polishing the interface to be sealed by adopting an angle grinder, polishing and cleaning surface floating dust, and guaranteeing the bonding sealing performance of the elastic epoxy cement; in addition, cleaning dirt, slurry, mortar and other dirt and screws on the surface of the segment, and polishing properly;
s6, installing arc-shaped reinforcing plates 1 in the tunnel in a ring-shaped manner, enabling a plurality of arc-shaped reinforcing plates 1 to be connected in a circumferential fastening manner to form a reinforcing ring, and enabling grouting cavities 3 in the arc-shaped reinforcing plates 1 to be communicated, wherein the fixing mode of the arc-shaped reinforcing plates 1 can select one of anchor bolt planting or adhesive layer filling according to the structure and the material of the arc-shaped reinforcing plates 1;
s7, grouting a part of grouting cavities 3 according to deformation convergence data of the tunnel lining structure or the requirement of reinforcing strength to form a primary support;
s8, judging the supporting force of the reinforcing ring to be enhanced according to the pressure-bearing monitoring data and the secondary deformation monitoring data of the reinforcing ring after installation;
s9, grouting the grouting cavity 3 which is not subjected to grouting to form a secondary support.
In a preferred scheme, the specific method for planting the anchor bolts comprises the following steps: the electric hammer is used for perforating the lining of the pipe piece opposite to the anchor bolt holes 5 on the ribs 2, the perforation depth is larger than 165mm, the hole is cleaned by a blower and a brush after the perforation, the anchor bolts are implanted into the holes, the planting quantity is not lower than 60% of the aperture ratio, if the anchor bolts collide with steel bars in the pipe piece, the positions of the anchor bolts can be properly adjusted, and the adjustment distance is not more than 50mm; the arc-shaped reinforcing sheet 1 is subjected to edge sealing, anchor bolt holes are not planted in the sealing, grouting is conducted between the arc-shaped reinforcing sheet 1 and the inner wall of the segment lining, so that gaps are avoided between the reinforcing section bar and the tunnel lining, and displacement is avoided;
the concrete method for filling the adhesive layer comprises the following steps: the arc-shaped reinforcing sheet 1 is attached to the inner wall of the segment lining, and then grouting of epoxy resin or concrete is directly carried out between the arc-shaped reinforcing sheet 1 and the segment lining;
the detection method of the pressure-bearing monitoring data comprises the following steps: a pressure sensor is arranged between the segment lining and the reinforcement ring of the arc-shaped reinforcement sheet 1;
the detection method of the secondary deformation monitoring data comprises the following steps: deformation of the reinforcing ring of the arc-shaped reinforcing sheet 1 is monitored through grating detection or a distance sensor.
In the preferred scheme, the method also comprises the steps of observing and maintaining the reinforcing ring to shield the segment lining and the grouted arc-shaped reinforcing sheet 1, and specifically comprises the following steps: after the support is formed in the step S7, the grouting cavity 3 which is not subjected to grouting can be broken, so that the segment lining covered by the reinforcing ring can be observed and maintained, or the health condition of the grouted arc-shaped reinforcing sheet 1 can be observed, the whole reinforcing ring is not required to be dismantled, and after the observation and maintenance work is finished, the broken grouting cavity 3 can be repaired, so that the follow-up grouting is facilitated.
The above embodiments are only preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this invention are also within the scope of the invention.
Claims (10)
1. The utility model provides a tunnel segment lining reinforced structure, includes arc reinforcement piece (1), characterized by: the inside of arc reinforcement piece (1) is provided with a plurality of grouting cavity (3) along circumference, and the circumference both ends of grouting cavity (3) are the opening form, are provided with grouting mouthful (4) corresponding with every grouting cavity (3) on the intrados of arc reinforcement piece (1).
2. The tunnel segment lining reinforcing structure according to claim 1, wherein: a rib (2) is arranged between two adjacent grouting cavities (3) and used for separating each grouting cavity (3);
the ribs (2) are provided with a plurality of anchor bolt holes (5) in a penetrating mode along the circumferential direction and are used for fixing the arc-shaped reinforcing plates (1) and the segment lining.
3. A tunnel segment lining reinforcing structure according to claim 1 or 2, characterized in that: an adhesive layer for fixing is arranged between the outer cambered surface of the arc-shaped reinforcing sheet (1) and the wall surface of the segment lining.
4. The tunnel segment lining reinforcing structure according to claim 1, wherein: a sealing assembly (6) is arranged in the grouting opening (4).
5. The tunnel segment lining reinforcing structure according to claim 4, wherein: the sealing component (6) is a sealing sheet fixedly arranged in the grouting opening (4).
6. The tunnel segment lining reinforcing structure according to claim 4, wherein: the sealing component (6) is a sealing cover which is arranged in the grouting opening (4) in a threaded manner.
7. The tunnel segment lining reinforcing structure according to claim 1, wherein: the grouting cavity (3) is one of cylindrical or rectangular.
8. A tunnel segment lining reinforcing method according to any one of claims 1 to 7, wherein: the method comprises the following steps:
s1, manufacturing an arc-shaped reinforcing sheet (1) according to tunnel segment lining lofting data and an arc-shaped reinforcing sheet (1) reinforcing drawing;
s2, installing arc-shaped reinforcing plates (1) in a ring shape in a tunnel, enabling the arc-shaped reinforcing plates (1) to be in circumferential fastening connection to form a reinforcing ring, and enabling grouting cavities (3) in the arc-shaped reinforcing plates (1) to be communicated, wherein the fixing mode of the arc-shaped reinforcing plates (1) can select one of anchor bolt planting or adhesive layer filling according to the structure and the material of the arc-shaped reinforcing plates (1);
s3, grouting a part of grouting cavities (3) according to deformation convergence data of the tunnel lining structure or reinforcing strength requirements to form a primary support;
s4, judging the supporting force of the reinforcing ring to be enhanced according to the pressure-bearing monitoring data and the secondary deformation monitoring data of the reinforcing ring after installation;
s5, grouting the grouting cavity (3) which is not subjected to grouting to form a secondary support.
9. The tunnel segment lining reinforcing method according to claim 8, wherein: the steps S1 and S2 further include:
s1, pipeline rearrangement in a tunnel reinforcement range, wherein the clear distance between each pipeline and a tunnel segment after rearrangement is not less than 15cm, the pipeline separation layer height is not more than 70cm, pipeline rearrangement is strictly performed according to a limit, and related obstacles need to be cleaned;
s2, cutting and chiseling a ballast bed (8), wherein the cutting width of the ballast bed can be adjusted according to the corbel positions (9) of the arc-shaped reinforcing plates (1), the installation of the corbel positions (9) is met, a corbel reinforcing rib plate is lower than the surface of the ballast bed, chiseling is carried out after cutting is finished, and then accurate lofting is carried out;
s3, plugging a pipe piece lining bolt hole and a reserved grouting hole, if the original plugging hand hole is cracked and loose in the installation range of the arc-shaped reinforcing piece (1), firstly knocking out the cracked part, then repairing the cracked part by quick-drying cement, and not being higher than the original concrete pipe piece, wherein the hand hole plugging at the top position is implemented on the same day of installing a top block steel plate in order to ensure operation safety and prevent controlled plugging material from falling off;
s4, polishing the segment lining basal plane, polishing the interface to be sealed by adopting an angle grinder, polishing and cleaning surface floating dust, and guaranteeing the bonding sealing performance of the elastic epoxy cement; in addition, the dirt, slurry, mortar and other dirt and screws on the surface of the segment are cleaned up and properly polished.
10. The tunnel segment lining reinforcing method according to claim 8, wherein: the method also comprises the steps of observing and maintaining the reinforcing ring to shield the segment lining and the grouted arc-shaped reinforcing sheet (1), and specifically comprises the following steps: after the support is formed in the step S7, the grouting cavity (3) which is not subjected to grouting can be broken, so that the segment lining covered by the reinforcing ring can be observed and maintained, or the health condition of the grouted arc-shaped reinforcing plate (1) can be observed, the whole reinforcing ring is not required to be dismantled, and after the observation and maintenance work is finished, the broken grouting cavity (3) can be repaired, so that the follow-up grouting is facilitated;
the detection method of the pressure-bearing monitoring data comprises the following steps: a pressure sensor is arranged between the segment lining and the reinforcement ring of the arc-shaped reinforcement sheet (1);
the detection method of the secondary deformation monitoring data comprises the following steps: and monitoring the deformation of the reinforcing ring of the arc-shaped reinforcing sheet (1) through grating detection or a distance sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310846145.2A CN116927811A (en) | 2023-07-11 | 2023-07-11 | Tunnel segment lining reinforcing structure and reinforcing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310846145.2A CN116927811A (en) | 2023-07-11 | 2023-07-11 | Tunnel segment lining reinforcing structure and reinforcing method thereof |
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