CN106640123A - Tunnel reinforcing device based on fiberglass pipe segments and construction method thereof - Google Patents
Tunnel reinforcing device based on fiberglass pipe segments and construction method thereof Download PDFInfo
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- CN106640123A CN106640123A CN201610933647.9A CN201610933647A CN106640123A CN 106640123 A CN106640123 A CN 106640123A CN 201610933647 A CN201610933647 A CN 201610933647A CN 106640123 A CN106640123 A CN 106640123A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
- D04H1/4218—Glass fibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4282—Addition polymers
- D04H1/4291—Olefin series
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/48—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
- D04H1/485—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation in combination with weld-bonding
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention belongs to the technical field of tunnel reinforcing protection and discloses a tunnel reinforcing device based on fiberglass pipe segments and a construction method thereof, and the tunnel reinforcing device is suitable for an existing operating subway tunnel. The tunnel reinforcing device comprises fiberglass pipe rings and a longitudinal connecting plate, wherein the fiberglass pipe rings are used for reinforcing the tunnel in the ring direction, and the longitudinal connecting plate is used for longitudinal fixing; each fiberglass pipe ring comprises a supporting frame and two supporting frame fixing seats, wherein the supporting frame is formed by assembling a plurality of arc-shaped supporting fiberglass plates in the circumferential direction, and the bottoms of the left side and the right side of the supporting frame are supported by the supporting frame fixing seats correspondingly; the multiple arc-shaped supporting fiberglass plates and the two supporting frame fixing seats are evenly distributed on the same cross section of the tunnel, so that the reinforcing fiberglass pipe rings are connected into a whole; and according to the construction method of the tunnel reinforcing device based on the fiberglass pipe segments, through the fiberglass pipe rings, the existing operating subway tunnel pipe segments are reinforced in the ring direction, and the fiberglass pipe rings are combined into a whole through the longitudinal connecting plate to longitudinally reinforce the tunnel pipe segments. According to the tunnel reinforcing device based on the fiberglass pipe segments and the construction method thereof, the anti-deformation capacity of the tunnel is improved, occurrence of lining diseases in the tunnel is reduced, and driving safety and the service life of the tunnel are guaranteed.
Description
Technical field
The invention belongs to tunnel reinforcement resist technology field, more particularly, to a kind of suitable for existing operation tactics
Tunnel reinforcement device and its construction method based on glass fibre section of jurisdiction.
Background technology
In recent years, with the development of China's urbanization, construction of subway engineering is carried out in high gear in each big city.Mesh
Before, the existing 19 city underground engineerings of China are being built, and about 13 city underground engineerings are planned.However, due to structure master
There is the reasons such as space, differential settlement in stress and secondary stress, deformation, lining cutting back and the soil body, significant proportion was both
Deform excessive problem with the presence of operation shield tunnel liner.Way station-Huai-Hai area of way station is revived with No. 8 lines of Shanghai rail transit
Between tunneling shield driving to the impact of established tunnel as a example by, because two tunnels are closely constructed, shield driving makes built tunnel
Road deforms, and established tunnel section interface also generates different degrees of deformation.Established tunnel in shield driving coverage
Flexible interface substantially occurred it is different degrees of open, open width it is maximum up to 3mm.Built tunnel in the range of shield driving
Road rigid interface totally 190 road, wherein 16 roads there occurs local opening, becomes at the close active well position in tunnel two ends and maximum vertical
Respectively there is the tube coupling concrete fragmentation near one rigid interface damaged at shape.
Because lining cutting deformed the attractive in appearance of conference destruction structure, cause to bind block and adjacent block is disengaged, joint opens
Measure the not enough diseases of various durability such as excessive, circumferential weld faulting of slab ends, duct piece connector damage, lining cutting steel bar corrosion and structural concrete corrosion
Evil occurs, and then destroys the integrality of structure and reduce their durability, so as to the situation of percolating water in tunnel increases, affects
The safety and service life of shield tunnel.If processed lining damages not in time, can further add havoc, or even
Tunnel cave, life threatening and property safety can be caused.
Therefore, in order to control the development that subway tunnel deforms, at present mostly using steel pipe sheet reinforcing, grouting and reinforcing in engineering
With aramid fabric plus the method for solid phase binding.But steel pipe sheet is reinforced transport and is constructed and expends a large amount of human resources, long construction period, plus
Gu high cost, it has not been convenient to construct, affects larger to this body structure of tunnel and shape, and steel pipe sheet anti-corrosive properties are poor, fragile.And
Because the characteristics of soft clay area adds soil layer low-intensity, high-compressibility, high sensitivity and rheological characteristic, grouting and reinforcing construction is not easily-controllable
, usually there is running pulp, spillage and situation about starching partially in system, and additional harmful effect is caused to tunnel structure, and lining cutting disease is exacerbated on the contrary
Harmful generation.In order to control the development of tunnel deformation, aramid fabric has been introduced into tunnel reinforcement engineering field, good so as to serve
Restriction tunnel deformation development, the maintenance tunnel water proofing impact of performance.
Now, appearing on the market with various good fiber quality materials, glass fiber material is used as a kind of the inorganic non-of excellent performance
Metal material, is gradually praised highly in concrete strengthening engineering.Glass fiber material is a kind of excellent performance without metal material
Material, species is various, and advantage is good insulating, heat resistance is strong, corrosion resistance is strong, high mechanical strength, sound absorption properties good, and it is with glass
Ball or discarded glass are raw material Jing high temperature meltings, wire drawing, doff, and the technique such as weave cotton cloth is made, per bundle fiber precursor all by
Hundreds of even thousand monofilament compositions, there is extensive development prospect.
The content of the invention
The technical problem to be solved is to be directed to the deficiencies in the prior art, there is provided a kind of glass fibre section of jurisdiction adds
Gu the construction method of existing operation tactics, its method and step is simple, reasonable in design and easy construction, construction effect are good, energy
Lining damages are control effectively, cycle is short and low cost.
For reinforcing the bracing means of existing operation tactics, including the fiberglass pipe for reinforcing to tunnel ring
Ring and for longitudinally fixed longitudinally connected plate；The glass fibre pipe ring includes supporting glass mat along circle by multiple arcs
The assembled bracing frame of circumferential direction and 2 bracing frame fixed seats for being respectively supported at support frame as described above left and right sides bottom；It is many
Individual curved support glass mat and two bracing frame fixed seats are laid on the same cross section in tunnel, make reinforcing glass
Fiber pipe ring is connected as one.
The glass fibre pipe ring and/or longitudinally connected plate are made up of glass fibre, and the composition of glass fibre is by titanium dioxide
Silicon, aluminum oxide, calcium oxide, boron oxide, magnesia and sodium oxide molybdena composition, wherein sodium oxide molybdena 0%～2%.
Preferably, the filament diameter of the glass fibre is between 10-20um.
Glass fibre selected by the present invention is that (sodium oxide molybdena 0%～2% belongs to aluminoborosilicate glass to alkali-free glass fibre
Glass), with quartz sand, aluminum oxide and pyrophyllite, lime stone, dolomite, boric acid, soda ash, saltcake, fluorite etc. as raw material Jing high temperature meltings
System, wire drawing, doff, the technique such as weave cotton cloth are manufactured into.Glass fibre section of jurisdiction is made first by direct melting process just by pyrophillite etc.
Raw material is melting into glass solution in kiln, excludes Jing paths after bubble and is transported to porous bushing, high speed pulling into glass precursor,
For proof strength, control filament diameter is between 10-20um.Because fiberglass pipe piece section is big in the present invention, toughness and extension
Property have high demands, from stretching property by force is good, the polypropylene fibre with corrosion resistance is combined making fiberglass sheet material with glass fibre.Through glass
Glass fiber and polypropylene fibre mixed cotton 1:1.5 shreddings, carding machine carries out combing, and lapping machine lapping, acupuncture unit acupuncture, semi-finished product felt is received
Volume, flat-bed press is compressing, cuts into corresponding size.Corresponding arc is rolled into using numerical control plate bending roll, and adds asphalt mixtures modified by epoxy resin
Fat is molded each piece of fiberglass sheet material bonding assembly, as glass fibre section of jurisdiction.
Preferably, curved support glass mat is made up of the curved panel and arc gusset that are fixedly connected, two neighboring
It is fastenedly connected by multiple connecting bolts on arc gusset between curved support glass mat, is provided with curved panel
Multiple crab-bolt installing holes installed for the crab-bolt, and the section of jurisdiction ring being fixed in tunnel by crab-bolt (section of jurisdiction refers to mix
Solidifying soil prefabricated pipe section, for operation tunnel has been present) on.
Preferably, support frame as described above fixed seat is made up of horizontal panel and arc gusset, and horizontal panel and arc gusset are all
Be using epoxy resin by the assembled shaping of each fiberglass sheet material bonding, curved support glass mat and bracing frame fixed seat it
Between be fastenedly connected by multiple connecting bolts on arc gusset, 2 bracing frame fixed seats on horizontal panel by anchoring
Bolt is respectively supported at tunnel inverted arch left and right sides top.
Preferably, the longitudinally connected plate is made up of curved panel and longitudinal arc gusset, for two neighboring glass fibers
It is fastenedly connected by multiple connecting bolts on the arc gusset of multiple tracks longitudinal direction between vascrlar girdle.
Preferably, each glass fibre pipe ring includes 1 little curved support glass mat, 4 big curved support glass
Fiberboard and 2 bracing frame fixed seats；Each curved support glass mat includes 1 piece of curved panel and 4 pieces of arc gussets；Often
One bracing frame includes 1 piece of horizontal panel and 3 pieces of arc gussets；Each longitudinally connected plate includes 1 piece of curved panel and 2 pieces of arched ribs
Plate.
In addition, a kind of present invention also offers construction method.
Tunnel reinforcement device reinforces the construction method of existing operation tactics, using glass fibre pipe ring to existing operation
Subway tunnel section of jurisdiction carries out ring reinforcing, and carries out longitudinal reinforcing to tunnel duct piece by the way that longitudinally connected hardened synthesis is overall.
Comprise the steps：
Step one, prefabricated components
Using the prefabricated curved panel of glass fiber material, horizontal panel and arc gusset, and open in each arc gusset
There are multiple bolt mounting holes installed for connecting bolt respectively, be provided with each arc or horizontal panel multiple for the crab-bolt
The crab-bolt installing hole of installation；
Step 2, section of jurisdiction ring are reinforced
According to the form of tunnel duct piece straight joint or the fissure of displacement carry out that curved support glass is installed using different reinforcing positions
Fiberboard and bracing frame fixed seat, installed in section of jurisdiction intrados；Little curved support glass mat binds block position installed in lining cutting
Place is put, remaining big curved support glass mat pushes the wrong the mode of open loop seam and installs, with lining cutting adjacent block and calibrated bolck position one
Cause；Arc gusset assembly with bolts between curved support glass mat ring, on curved panel with setscrew with
Section of jurisdiction is fixed；
Be also adopted by bolt connection between two bracing frame fixed seats and curved support glass mat, but using crab-bolt by its
It is fixed on tunnel bottom railway roadbed, connects as one reinforcing ring；
Step 3, section of jurisdiction longitudinal reinforcement
According to the installation situation of tunnel gut line, using 5 roads of 5 pieces of curved support glass mat middle positions of correspondence
The longitudinally connected plate drawknot of glass fibre, the longitudinally connected plate ring of multiple tracks is using multiple connecting bolts on arc gusset and curved support glass
Glass fiberboard is fastenedly connected, and is glued using brushing epoxy resin before installing between longitudinally connected plate curved panel and lining cutting
Knot, reinforces ring and forms entirety with longitudinal reinforcement.
Preferably, the domain of glass fibre pipe ring described in step one is by curved panel, arc gusset, bracing frame fixed seat structure
Into, between be attached assembly with bolt, anchor connection is carried out by expansion bolt with section of jurisdiction；The glass fibre pipe ring is each
Ring circumferentially arranges that each curved support glass mat is corresponding with lining cutting relative position to be divided into 1 little curved support glass
Glass fiberboard and 4 big curved support glass mats, avoid Lining Ring and sew cloth to put；The little curved support glass mat is long
Degree will be longer than the block that binds, the structure and size all same of remaining multiple big curved support glass mat.
Preferably, each glass fibre pipe ring described in rapid reinforce by 1 little curved support glass mat, 4 it is big
Curved support glass mat and 2 bracing frame fixed seat compositions, curved support glass mat is in the vault and a left side for reinforcing section
On right two side walls, two support frame as described above fixed seats are respectively supported on the inverted arch left and right sides of existing operation tactics
Side, multiple curved support glass mats and two support frame as described above fixed seats are laid in existing operation tactics
On same tunnel cross section.
Preferably, according to the form of tunnel duct piece straight joint or the fissure of displacement carry out that arc is installed using different reinforcing positions
Support glass mat and bracing frame fixed seat, installed in section of jurisdiction intrados, avoid circumferential weld.
Below the present invention is described further：
The invention discloses a kind of glass fibre material section of jurisdiction, its main component is silica, aluminum oxide, calcium oxide, oxygen
Change boron, magnesia, sodium oxide molybdena etc..Glass fibre selected by the present invention is that (sodium oxide molybdena 0%～2% belongs to aluminium to alkali-free glass fibre
Borosilicate glass), with quartz sand, aluminum oxide and pyrophyllite, lime stone, dolomite, boric acid, soda ash, saltcake, fluorite etc. as former
Material Jing high temperature meltings, wire drawing, doff, the technique such as weave cotton cloth are manufactured into.Glass fibre section of jurisdiction is made first by direct melting process just
The raw materials such as pyrophillite are melting into into glass solution in kiln, Jing paths after bubble are excluded and is transported to porous bushing, high speed pulling
It is proof strength into glass precursor, control filament diameter is between 10-20um.Because fiberglass pipe piece section is big in the present invention,
Toughness and ductility have high demands, from stretching property by force is good, the polypropylene fibre with corrosion resistance is combined making glass fibre with glass fibre
Sheet material.Through glass fibre and polypropylene fibre mixed cotton 1:1.5 shreddings, carding machine carries out combing, lapping machine lapping, acupuncture unit acupuncture,
Semi-finished product felt winds, and flat-bed press is compressing, cuts into corresponding size.Corresponding arc is rolled into using numerical control plate bending roll, and
Addition epoxy resin is molded each piece of fiberglass sheet material bonding assembly, as glass fibre section of jurisdiction.Such glass fibre section of jurisdiction
With good insulating, heat resistance be strong, corrosion resistance is good, high mechanical strength, simple production process is convenient, the high spy of production efficiency
Point.
Existing operation tactics are reinforced and fixed using the curved panel, arc gusset and bracing frame that are made by glass fibre
The glass fibre pipe ring that seat is assemblied to form, ring reinforcing is carried out to existing operation tunnel section of jurisdiction, and by longitudinally connected hardened conjunction
It is integral that longitudinal reinforcing is carried out to section of jurisdiction.
The glass fibre pipe ring is along the circumferential direction spelled including multiple different size of curved support glass mats
The bracing frame and 2 bracing frame fixed seats for being respectively supported at support frame as described above left and right sides bottom of dress.Prop up described in two
Support fixed seat is respectively supported at the inverted arch left and right sides top of existing operation tactics, multiple curved support glass fibers
Dimension plate and two support frame as described above fixed seats are laid on the same tunnel cross section of existing operation tactics, make reinforcing
Glass fibre pipe ring is connected as one, to reach ring entirety stress.
The concrete platform mated formation for rail is provided with the inverted arch of the existing operation tactics, the concrete is put down
The top left and right sides of platform is respectively arranged with a gutter.
Support frame as described above fixed seat is made up of horizontal panel and arc gusset, and two support frame as described above fixed seats pass through level
Anchor bolt is respectively supported on two tunnel bottom railway roadbeds (in gutter) on panel, multiple curved support glass
The width of glass fiberboard is 500mm.
The curved support glass mat is made up of the curved panel and the arc gusset, the two neighboring arc
Shape supports between glass mat and passes through between the curved support glass mat and bracing frame fixed seat arched ribs
Multiple connecting bolts are fastenedly connected on plate, and each described curved support glass mat is by multiple anchors on curved panel
Bolt is fixed on the section of jurisdiction ring in existing operation tactics, on the curved panel of each curved support glass mat
It is provided with multiple crab-bolt installing holes installed for the crab-bolt.
The left and right sides arc gusset of each curved support glass mat is provided with multiple respectively for the connection
The longitudinal bolt installing hole that bolt is installed, ring both sides are provided with multiple ring bolt peaces installed for the connecting bolt respectively
Dress hole；The outer arcuate gusset of support frame as described above fixed seat is provided with multiple ring bolt installations installed for the connecting bolt
Hole.
The longitudinally connected plate is made up of the curved panel and the arc gusset, the two neighboring fiberglass pipe
It is fastenedly connected by multiple connecting bolts on the longitudinally connected plate arc gusset of multiple tracks between ring, the longitudinally connected plate is only arranged
Longitudinal arc gusset, the arc gusset is provided with multiple longitudinal bolt installing holes installed for the connecting bolt respectively, institute
The width for stating longitudinally connected plate is 500mm.
The present invention technology design be：
Step one, using glass fiber material it is prefabricated reinforced needed for component.Each glass fibre pipe ring includes 1 little arc
Support glass mat, 4 big curved support glass mats and 2 bracing frame fixed seats；Each curved support glass fibre
Plate includes 1 piece of curved panel and 4 pieces of arc gussets；Each bracing frame includes 1 piece of horizontal panel and 3 pieces of arc gussets.It is each vertical
Include 1 piece of curved panel and 2 pieces of arc gussets to connecting plate.Each described arc gusset is provided with multiple respectively for the connection
The bolt mounting holes that bolt is installed, are provided with multiple crab-bolt peaces installed for the crab-bolt on each described arc or horizontal panel
Dress hole.
Step 2, section of jurisdiction ring are reinforced.Different reinforcing positions is adopted according to the form of tunnel duct piece straight joint or the fissure of displacement
Carry out that curved support glass mat and bracing frame fixed seat are installed, installed in section of jurisdiction intrados (avoiding circumferential weld), prevent section of jurisdiction
Differential settlement breaks segment bolt.Little curved support glass mat binds at block position installed in lining cutting, and remaining 4 big
Curved support glass mat pushes the wrong the mode of open loop seam and installs, with lining cutting adjacent block and calibrated bolck position consistency.5 arcs
Arc gusset between support glass mat ring is assembled using the connection of galvanizing M18x8.8 grade bolts, from straight on curved panel
The setscrew of footpath 18mm is fixed with section of jurisdiction.
3 M18x8.8 grade bolts connections are also adopted by between two bracing frame fixed seats and curved support glass mat, and
It is fixed on tunnel bottom railway roadbed (in ditch) using 4 crab-bolts, connects as one reinforcing ring.
Step 3, section of jurisdiction longitudinal reinforcement：According to the installation situation of tunnel gut line, using 5 blocks of curved support glass of correspondence
The longitudinally connected plate drawknot of the 5 road glass fibres (avoiding tunnel gut line) of fiberboard middle position, the longitudinally connected plate ring of multiple tracks
It is fastenedly connected using multiple connecting bolts on arc gusset and curved support glass mat, longitudinally connected plate curved panel
Bondd using brushing epoxy resin before installing between lining cutting, reinforce ring and form entirety with longitudinal reinforcement, can be caused
Occur the larger position of sedimentation section of jurisdiction be deposited under the drawknot of adjacent section of jurisdiction can uniform settlement, to reduce tunnel duct piece appearance
Deform larger and destruction risk.
Beneficial effects of the present invention are mainly manifested in：(1), method and step is simple, reasonable in design and transport of constructing is simple square
Just, input cost is relatively low, and Practical Project operation implementation is strong；(2), practice of construction process is mainly existing operation tactics glass
Glass fiber pipe ring is reinforced, and by the method the non-deformability in tunnel can be improved, and reduces the generation of tunnel internal lining damages,
So as to reduce the possibility that tunnel occurs accident, it is ensured that traffic safety and tunnel service life；(3), practical value is high and makes
It is good with effect, existing existing operation tactics steel loop reinforcing and the construction method of stratum slip casting pre-reinforcement are compared, shorten and apply
It is the work duration, larger to reduce construction cost, can both reinforce staggered joint erection section of jurisdiction, or through seam assembling section of jurisdiction can have been reinforced；(4), glass
Glass fiber has good good chemical stability, high intensity, high-modulus, lightweight, good stability of the dimension, polarization, fire prevention, insulation etc.
Advantage, the pipe ring reinforcement block being fabricated to is few, and transport easy construction, safety coefficient are high, effectiveness is good, life of product length and will not
Operation to subway train is impacted；(5) it is, widely applicable, all existing operation tactics can be effectively applicable to and be particularly
Easily there is the protection and reinforcing of tunnel-liner in lining damages danger stratum in rich water soft stratum etc., ensured the peace of tunnel structure
Quan Xing.
Description of the drawings
Fig. 1 is method of the present invention FB(flow block).
Fig. 2 is that ring glass fibre pipe ring reinforces state diagram.
Longitudinal glass fibre connecting plate reinforces state diagram when Fig. 3 is straight joint.
Longitudinal glass fibre connecting plate reinforces state diagram when Fig. 4 is the fissure of displacement.
Fig. 5 is little curved support glass fibre plate structure schematic diagram.
Fig. 6 is big curved support glass fibre plate structure schematic diagram.
Fig. 7 is bracing frame fixed seat structure schematic diagram.
Fig. 8 is the longitudinally connected plate structure schematic diagram of glass fibre.
1-existing operation tactics；2-section of jurisdiction；3-rail；4-concrete platform；5-gutter；6-1 --- arc
Shape panel；6-2-ring arc gusset；6-3-longitudinal direction arc gusset；7-1-bracing frame fixed seat；7-2-horizontal panel；
8-longitudinally connected plate；9-1-ring bolt mounting holes；9-2-longitudinal bolt installing hole；9-3-crab-bolt installing hole；
Specific embodiment
Below in conjunction with the accompanying drawings the invention will be further described.
A kind of glass fibre section of jurisdiction as shown in Figure 1 reinforces the construction method technological process of existing operation tactics.Institute
State glass fibre pipe ring to prop up including multiple different size of curved support glass mats are along the circumferential direction assembled
Support and 2 bracing frame fixed seats 7 for being respectively supported at support frame as described above left and right sides bottom.Two support frame as described above fixed seats
The 7 inverted arch left and right sides tops for being respectively supported at existing operation tactics 1, multiple curved support glass mats and two
Individual support frame as described above fixed seat 7 is laid on the same tunnel cross section of existing operation tactics 1, makes reinforcing glass fibers
Vascrlar girdle is connected as one, to reach ring entirety stress (to avoid existing operation tactics inside lining circumferential weld as original
Then carry out), refer to Fig. 2.
The concrete platform 4 mated formation for rail 3, the coagulation are provided with the inverted arch of the existing operation tactics 1
The top left and right sides of native platform 4 is respectively arranged with a gutter 5, and two support frame as described above fixed seats 7 are respectively supported at two
In the individual gutter 5.
Multiple glass fibre pipe rings are fastenedly connected by longitudinally connected plate 8 described in multiple tracks and are integrated, and the longitudinal direction connects
Fishplate bar 8 is laid along the longitudinal length of tunnel reinforcement section and its length is not less than the length of the reinforcing section, indulges described in multiple tracks
Along the circumferential direction lay from left to right to connecting plate 8, carried out as principle with avoiding existing operation tactics gut line.
During actual reinforcing, can be according to the concrete engineering fissure of displacement or the needs of straight joint, to the glass fibre pipe ring and longitudinal direction
The quantity and installation position of connecting plate 8 is adjusted accordingly, and refers to Fig. 3 and Fig. 4.
Detailed process is as follows：
1) Construction in Preparatory Stage
Glass fibre pipe ring reinforces required structure manufacture：With reference to Fig. 5, Fig. 6, Fig. 7 and Fig. 8, the glass fibre pipe ring bag
Include 1 little curved support glass mat, 4 big curved support glass mats and 2 bracing frame fixed seats 8.It is multiple described
The width of curved support glass mat and bracing frame fixed seat is 500mm, and little curved support glass mat length will be grown
In the block that binds, the structure and size all same of remaining multiple big curved support glass mat, length is equal as shown in Figure 2
Point.During reality processing, the size of the fiberglass pipe ring element can be adjusted accordingly according to specific needs.
1 curved support glass mat is by by 1 piece of curved panel 6-1,2 pieces of ring arc gusset 6-
2 and 2 pieces of longitudinal arc gusset 6-3 compositions, the setscrew from diameter 18mm and section of jurisdiction 2 on the curved panel 6-1
It is fixed, wherein the little curved support glass mat has 5 crab-bolt installing hole 9-3, the big curved support glass fibers
Dimension plate has 11 crab-bolt installing hole 9-3；Spelled using the connection of galvanizing M18x8.8 grade bolts between the ring arc gusset 6-2
Dress, side is respectively provided with 3 bolt hole 9-1,3 bolt hole 9- of longitudinal little curved support glass mat settings of arc gusset 6-3
2, big curved support glass mat arranges 5 bolt hole 9-2.
The thickness of multiple curved panel 6-1 and arc gusset 6-2,6-3 is 20mm, and arc gusset 6-2,6-3 are high
Degree is 60mm.Support frame as described above is fixed 7 and is made up of horizontal panel 7-2 and ring arc gusset 6-2, and two support frames as described above are consolidated
Reservation 7 is respectively supported at (gutter on two tunnel bottom railway roadbeds by the upper 4 anchor bolt 9-3 of horizontal panel 7-2
In 5), side ring arc gusset 6-2 sets 3 18mm bolts hole 9-1 and connects with the adjacent curved support glass mat fastening
Connect.
The longitudinally connected plate 8 is made up of the curved panel 6-1 and longitudinal arc gusset 6-3, two neighboring institute
State and be fastenedly connected by multiple connecting bolts on the longitudinal arc gusset 6-3 of the longitudinally connected plate 8 of multiple tracks between glass fibre pipe ring,
The longitudinally connected plate 8 arranges longitudinal arc gusset 6-3, and longitudinal arc gusset 6-3 is provided with 3 and supplies the company respectively
The longitudinal bolt installing hole 9-2 that connecting bolt is installed, the width of the longitudinally connected plate 8 is 500mm, and its length is not less than described
The length of section is reinforced, is typically circumferentially the longitudinally connected plate 8 in 5 roads.The size and installation position of the longitudinally connected plate is referring to figure
3rd, 4 two kinds of lining cutting situations, are adjusted also dependent on Practical Project.
The glass fibre pipe ring reinforces the external diameter of required component and the Tunnel internal diameter one of existing operation tactics 1
Cause.After component forming, polished, degreasing, ensure surface it is clean.Reinforcement material need to be according to drawing requirement machine-shaping, just
In in-site installation.
Because daily consolidation time is short, strengthening construction is more difficult in tunnel, while need to be before daily reinforcing by stage+module
Complete, platform removal carried out after the completion of construction, during reinforcing operation platform need to be fabricated to simply, distachable platform, according to
Toward construction experience, tunnel inner platform making, dismounting, install convenient and safety are carried out using door-type scaffold for building.
2) the transport of materials stage in tunnel
Start component installment work, first truck iron wedge is positioned on track and is used after it can enter running tunnel
Son fixes four wheels, prevents slippery；Then porter is by little curved support glass mat, big curved support glass fibers
Dimension plate, bracing frame fixed seat, longitudinally connected plate, expansion bolt, epoxy resin and construction tool, door-type scaffold for building are carried
To on truck and fix；Truck is manually pushed again, and material etc. is transported to into work zone.
3) scaffold erection stage
After reaching construction area, door-type scaffold is unloaded first, and start scaffold assembly, after the completion of assembly, fix
Four casters have reinforced diagonal brace simultaneously.
4) construction lofting positioning stage
Referring to Fig. 2, according to construction lofting position before, anchor hole 9-3 is bored on concrete section of jurisdiction 2 according to setting-out.Meanwhile, enter
The installation of row ring bracing frame fixed seat 7.Ring bracing frame fixed seat 7 is fixed in tunnel bottom railway roadbed using 4 crab-bolts
On (in ditch 5).
5) erection stage is reinforced
After Positioning arc plate is installed, successively the order according to circumferencial direction from left to right carries out first ring reinforcing, installs
Intrados (the avoiding circumferential weld as far as possible) in section of jurisdiction, big curved support glass mat is carried out tightly according to hole above and concrete section of jurisdiction 2
Gu confining bolt 9-1 between expansion anchor 9-3, with ring bracing frame fixed seat 7, little curved support glass fibre is then attached to
Plate, then to the big curved support glass mat of opposite side.The first fastening duct piece of all glass mats of the installation process is multiple
Crab-bolt 9-3, then fasten the multiple bolt 9-1 between adjacent curved support glass mat.Finally make section of jurisdiction and fiberglass pipe
Annular cyclization is to entirety.Section of jurisdiction ring is reinforced referring to Fig. 2.
According to the installation situation of tunnel gut line, tunnel inner tube (is avoided using the longitudinally connected drawknot of plate 8 of 5 road glass fibres
Line), the longitudinally connected plate ring in 5 roads is using on multiple connecting bolt 9-2 and curved support glass mat on longitudinal arc gusset 6-3
Longitudinal arc gusset 6-3 is fastenedly connected, using brush before installing between longitudinally connected plate curved panel 6-1 and lining segment 2
Apply epoxy resin to be bondd.Section of jurisdiction longitudinal reinforcement is referring to Fig. 3, Fig. 4
6) scaffold teardown phase
Install per ring after completion and close power supply, pack up power line, dismounting scaffold is positioned at service channel, truck
Exit and be positioned over ventilating shaft stair side, check construction tool, site clearing prepares to withdraw from the arena.
7) site clearing and examination is withdrawn from the arena the stage
After the completion of reinforcing, recover all facilities, check site clearing situation, truck and door-type scaffold are withdrawn from the arena and tested
Receive.
Claims (10)
1. it is used to reinforce the bracing means of existing operation tactics, it is characterised in that：Including for reinforcing to tunnel ring
Glass fibre pipe ring and for longitudinally fixed longitudinally connected plate；The glass fibre pipe ring includes supporting glass by multiple arcs
The along the circumferential direction assembled bracing frame of fiberboard and 2 bracing frames for being respectively supported at support frame as described above left and right sides bottom
Fixed seat；Multiple arcs support glass mat and two bracing frame fixed seats to be laid on the same cross section in tunnel,
Connect as one reinforcing glass fibre pipe ring.
2. tunnel reinforcement device according to claim 1, it is characterised in that：The glass fibre pipe ring and/or longitudinal direction connect
Fishplate bar is made up of glass fibre, and the composition of glass fibre is by silica, aluminum oxide, calcium oxide, boron oxide, magnesia and oxidation
Sodium is constituted, wherein sodium oxide molybdena 0%～2%；The filament diameter of glass fibre is between 10-20um.
3. tunnel reinforcement device according to claim 1, it is characterised in that：Curved support glass mat is by being fixedly connected
Curved panel and arc gusset composition, by multiple connections on arc gusset between two neighboring curved support glass mat
Bolt is fastenedly connected, and multiple crab-bolt installing holes installed for the crab-bolt are provided with curved panel, and solid by crab-bolt
It is scheduled on the section of jurisdiction ring in tunnel.
4. tunnel reinforcement device according to claim 2, it is characterised in that：Support frame as described above fixed seat by horizontal panel and
Arc gusset is constituted, and horizontal panel and arc gusset are molded the bonding assembly of each fiberglass sheet material by epoxy resin, arc
It is fastenedly connected by multiple connecting bolts on arc gusset between support glass mat and bracing frame fixed seat, 2
Support fixed seat is respectively supported at tunnel inverted arch left and right sides top by anchor bolt on horizontal panel；The longitudinally connected plate
Be made up of curved panel and longitudinal arc gusset, in order between two neighboring glass fibre pipe ring by the arc gusset of multiple tracks longitudinal direction
Multiple connecting bolts are fastenedly connected.
5. tunnel reinforcement device according to claim 1, it is characterised in that：Each glass fibre pipe ring includes 1 little arc
Shape supports glass mat, 4 big curved support glass mats and 2 bracing frame fixed seats；Each curved support glass fibers
Dimension plate includes 1 piece of curved panel and 4 pieces of arc gussets；Each bracing frame includes 1 piece of horizontal panel and 3 pieces of arc gussets；It is each
Longitudinally connected plate includes 1 piece of curved panel and 2 pieces of arc gussets.
6. usage right requires that the arbitrary tunnel reinforcement devices of 1-4 reinforce the construction method of existing operation tactics, and it is special
Levy and be：Ring reinforcing is carried out to existing operation tactics section of jurisdiction using glass fibre pipe ring, and by longitudinally connected hardened
Synthesis is overall to carry out longitudinal reinforcing to tunnel duct piece.
7. construction method according to claim 5, it is characterised in that：Comprise the steps：
Step one, prefabricated components
Using the prefabricated curved panel of glass fiber material, horizontal panel and arc gusset, and it is provided with each arc gusset many
The individual bolt mounting holes installed for connecting bolt respectively, are provided with multiple for crab-bolt installation on each arc or horizontal panel
Crab-bolt installing hole；
Step 2, section of jurisdiction ring are reinforced
According to the form of tunnel duct piece straight joint or the fissure of displacement carry out that curved support glass fibre is installed using different reinforcing positions
Plate and bracing frame fixed seat, installed in section of jurisdiction intrados；Little curved support glass mat binds at block position installed in lining cutting,
Remaining big curved support glass mat pushes the wrong the mode of open loop seam and installs, with lining cutting adjacent block and calibrated bolck position consistency；Arc
Shape supports the arc gusset assembly with bolts between glass mat ring, is entered with section of jurisdiction with setscrew on curved panel
Row is fixed；
Bolt connection is also adopted by between two bracing frame fixed seats and curved support glass mat, and is fixed using crab-bolt
On tunnel bottom railway roadbed, connect as one reinforcing ring；
Step 3, section of jurisdiction longitudinal reinforcement
According to the installation situation of tunnel gut line, using 5 road glass of 5 pieces of curved support glass mat middle positions of correspondence
The longitudinally connected plate drawknot of fiber, the longitudinally connected plate ring of multiple tracks is using multiple connecting bolts on arc gusset and curved support glass fibers
Dimension plate is fastenedly connected, and is bondd using brushing epoxy resin before installing between longitudinally connected plate curved panel and lining cutting,
Reinforce ring and form entirety with longitudinal reinforcement.
8. construction method according to claim 7, it is characterised in that：Comprise the steps：Glass fibers described in step one
The vascrlar girdle domain is made up of curved panel, arc gusset, bracing frame fixed seat, between be attached assembly with bolt, with section of jurisdiction
Anchor connection is carried out by expansion bolt；The each ring of the glass fibre pipe ring circumferentially arranges, each curved support glass fibers
Plate is corresponding with lining cutting relative position is divided into 1 little curved support glass mat and 4 big curved support glass fibres for dimension
Plate, avoids Lining Ring and sews cloth to put；The little curved support glass mat length will be longer than the block that binds, remaining multiple described big arc
Shape supports the structure and size all same of glass mat.
9. construction method according to claim 8, it is characterised in that：Comprise the steps：Each glass described in rapid one
Fiber pipe ring is reinforced and fixed by 1 little curved support glass mat, 4 big curved support glass mats and 2 bracing frames
Seat composition, curved support glass mat reinforce section vault and left and right two side walls on, two support frame as described above fixed seats
It is respectively supported at the inverted arch left and right sides top of existing operation tactics, multiple curved support glass mats and two
Support frame as described above fixed seat is laid on the same tunnel cross section of existing operation tactics.
10. construction method according to claim 8, it is characterised in that：According to tunnel duct piece straight joint or the form of the fissure of displacement
Carry out that curved support glass mat and bracing frame fixed seat are installed using different reinforcing positions, installed in section of jurisdiction intrados,
Avoid circumferential weld.
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| CN201610933647.9A CN106640123B (en) | 2016-10-31 | 2016-10-31 | Tunnel reinforcing device based on glass fiber duct piece and construction method thereof |
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| CN201610933647.9A CN106640123B (en) | 2016-10-31 | 2016-10-31 | Tunnel reinforcing device based on glass fiber duct piece and construction method thereof |
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| IT202100032699A1 (en) * | 2021-12-27 | 2023-06-27 | Atp S R L | SYSTEM AND METHOD OF CONTROL OF CORTICAL DETACHMENTS IN COMPUTER-BASED TUNNEL |
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