CN108119163A - For the assembled secondary liner structure of drill+blast tunnel and composite lining structure - Google Patents
For the assembled secondary liner structure of drill+blast tunnel and composite lining structure Download PDFInfo
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- CN108119163A CN108119163A CN201810100628.7A CN201810100628A CN108119163A CN 108119163 A CN108119163 A CN 108119163A CN 201810100628 A CN201810100628 A CN 201810100628A CN 108119163 A CN108119163 A CN 108119163A
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- secondary liner
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- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 claims description 29
- 239000012790 adhesive layer Substances 0.000 claims description 24
- 239000004568 cement Substances 0.000 claims description 24
- 239000004567 concrete Substances 0.000 claims description 24
- 239000011374 ultra-high-performance concrete Substances 0.000 claims description 22
- 239000000945 filler Substances 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 239000003351 stiffener Substances 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 239000011150 reinforced concrete Substances 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 7
- 239000011435 rock Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000006004 Quartz sand Substances 0.000 claims description 6
- 239000002956 ash Substances 0.000 claims description 6
- 230000008602 contraction Effects 0.000 claims description 6
- 239000010881 fly ash Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 229920005594 polymer fiber Polymers 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 230000008961 swelling Effects 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 18
- 238000009412 basement excavation Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 10
- 238000005336 cracking Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
Classifications
-
- 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
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- 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
- E21D11/006—Lining anchored in the rock
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Civil Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention provides a kind of for the assembled secondary liner structure of drill+blast tunnel and composite lining structure.Wherein, it is described to include for the assembled secondary liner structure of drill+blast tunnel：Multiple keel have interval between the adjacent keel；And multiple section of jurisdiction rings, between adjacent keel；Wherein, the multiple keel and the multiple section of jurisdiction ring are along the longitudinal spliced setting in the tunnel.The present invention reduces tunnel excavation amount, structure tension performance is good, construction efficiency is high, durability is good, Life cycle is at low cost for the assembled secondary liner structure of drill+blast tunnel and composite lining structure.
Description
Technical field
The present invention relates to highway engineering, especially Tunnel Engineering technical fields more particularly to one kind to be used for drill+blast tunnel
Assembled secondary liner structure and composite lining structure.
Background technology
With the fast development of transportation economy, highway in China tunnel construction enters gold period.In mountain ridge weight mound area
The vcehicular tunnel built, substantially using drill bursting construction, and generally use is formed with anchor pole, gunite concrete and supporting arch ring etc.
Flexibility just lining and armored concrete rigidity two lining composition composite lining.
The armored concrete two of conventional composite formula lining cutting is served as a contrast by the way of cast-in-place, in order to ensure its rigidity and bearing capacity,
Cast-in-place two thickness of the liner degree of ordinary reinforced concrete is larger, big, of high cost so as to cause tunnel excavation amount, and site construction technology
Complexity, speed of application are slow, quality control on construction difficulty is big.Meanwhile in cast-in-place ordinary reinforced concrete two serves as a contrast work progress,
Just lining deformation is big, and just lining, which comes off, waits unsafe conditions to happen occasionally, and very big security risk is brought to site operation.In addition, it adopts
With the tunnel of conventional composite formula lining cutting, during operation, the problems such as liner structure deformation is big, cracking, leak, protrudes, and runs ring
Border is poor, seriously affects security, the comfort of tunnel operation, and operation cost is high, and social harmful effect is big.
Therefore, there is an urgent need for developing a kind of new secondary liner structure, the thickness of two linings can effectively be reduced, reduction tunnel is opened
Digging amount, the quality for ensureing two linings improve construction efficiency, and can be to being just lined with certain safety protection function, while can effectively solve
Certainly tunnel promotes the security in tunnel, comfort and operation quality in the disease problem of operation phase.
The content of the invention
(1) technical problems to be solved
In order to solve the above technical problems, it is a primary object of the present invention to provide a kind of assembled for drill+blast tunnel
Secondary liner structure and composite lining structure to reduce the thickness of secondary liner structure, reduce tunnel excavation amount, realize simultaneously
The standardized designs of secondary liner structure industrialize prefabricated, prefabricated construction, and the engineering construction phase is greatly reduced and runs the peace of phase
Full blast danger, shortens the construction period, promotes the construction quality in tunnel and operation quality.
(2) technical solution
According to an aspect of the invention, there is provided a kind of assembled secondary liner structure for drill+blast tunnel, bag
It includes：Multiple keel have interval between the adjacent keel；And multiple section of jurisdiction rings, between the adjacent keel；
Wherein, the multiple keel and the multiple section of jurisdiction ring are along the longitudinal spliced setting in the tunnel.
In some embodiments, each keel are combined using prefabricated very-high performance reinforced concrete structure or steel-concrete
Structure, including 3~5 keel sections along the circumferential splicing in the tunnel, the circumferential both sides of keel are the rectangular section with tenon.
In some embodiments, 2~6 section of jurisdiction rings are equipped between two adjacent keel, each section of jurisdiction ring is included along described
4~6 pieces of sections of jurisdiction of the circumferential splicing in tunnel, inner surface are concordant with the inner surface of the keel；Each section of jurisdiction is arc panel, material
For very-high performance armored concrete, indulged including section of jurisdiction agent structure and in the section of jurisdiction agent structure top surface, along the tunnel
To 1~4 circumferential direction ribbed stiffener of setting.
In some embodiments, the keel along the wide B1 in length of tunnel direction between 40~100cm, thickness H1 between
Between 30~50cm, the value of B1 and H1 increase with the increase of tunnel row track quantity and Grades of Surrounding Rock；
In some embodiments, the section of jurisdiction along the wide B2 in length of tunnel direction between 2~4m；The section of jurisdiction main body knot
The thickness H2 of structure is determined according to tunnel number of track-lines and country rock species, determines that principle is as follows：(I) for two-lane tunnel, country rock grade
H2 corresponding to other I~V is respectively：14~18cm, 14~18cm, 16~20cm, 18~22cm, 20~26cm, (II) for
Three lanes tunnel, the H2 corresponding to Grades of Surrounding Rock I~V are respectively：16~20cm, 16~20cm, 18~22cm, 22~26cm,
26~30cm；The height H3 of the ribbed stiffener is 1/6~1/3 times of H2, and the width B3 of ribbed stiffener is 1/2~3/2 times of H3.
In some embodiments, hand hole, bolt hole and injected hole are provided on the section of jurisdiction, surrounding is provided with tenon and matches somebody with somebody
Put waterstop, between two adjacent sections of jurisdiction and the tenon between adjacent section of jurisdiction and keel section is mutually matched with waterstop.
In some embodiments, the section of jurisdiction in each section of jurisdiction ring includes splice sections and closure section；The section of jurisdiction adjacent and
The closure section and splice sections of splicing use rectangle arc panel using wedge-shaped arc panel, remaining splice sections of section of jurisdiction；Adjacent closure
Splicing seams are formed between section and splice sections and between adjacent splice sections and splice sections, arbitrary two splice in each section of jurisdiction ring
Seam is located at different height, and adjacent tubes loop is symmetrical in 180 ° along the perpendicular in length of tunnel direction.
In some embodiments, it is described to be further included for the assembled secondary liner structure of drill+blast tunnel：For
Along after the section of jurisdiction ring connection between two adjacent keel of the front end in constructing tunnel direction, the keel of front end is made to be applied along tunnel
The negative direction of work squeezes the lateral compression device of the section of jurisdiction ring between keel adjacent thereto；And for being twisted after the extruding
Tight bolt in place；Wherein, the lateral compression device includes actuator and counter-force stent.
According to another aspect of the present invention, a kind of composite lining structure is additionally provided, including the secondary lining
Structure further includes first lining structure and the adhesive layer between the secondary liner structure and first lining structure.
In some embodiments, the material of the adhesive layer be cement base filler material, the keel of the secondary liner structure,
There is gap between the top surface of section of jurisdiction ring and the just inner surface of lining structure, cement base is injected by the injected hole of the section of jurisdiction
Filler material fills the gap and forms the adhesive layer, and thus the keel, section of jurisdiction ring and first lining form overall structure.
In some embodiments, the keel and section of jurisdiction ring are using prefabricated very-high performance reinforced concrete structure, resistance to compression
Intensity >=150MPa, tensile strength >=8MPa, bending strength >=40MPa, elasticity modulus >=40GPa, μ ε of contraction≤300, anti-chlorine
Ion infiltration coefficient≤0.02 × 10-12m2/s；The ultra-high performance concrete includes multicomponent, each component and its mass percent
Respectively：Cement：25%~35%；Silicon ash：3%~10%；Flyash：0~10%；Quartz sand：25%~55%；Stone：0
~36%；Steel fibre：2.0%~3.0%；PVA fibers：0.8%~1.2%；Water：4.0%~8.0%；Water-reducing agent：0.36%
~1.2%；Wherein, quartz sand maximum particle diameter 1mm, stone maximum particle diameter 10mm；
The cement base filler material that the adhesive layer uses selects C30~C60 concrete or LC30~LC60 lightweight concretes,
The intensity of adhesive layer is consequently formed just lining, adhesive layer, section of jurisdiction ring three between the intensity of concrete used in first lining and section of jurisdiction ring
The intensity transition of person；μ ε of the contraction of the cement base filler material≤100, presetting period >=4h, final setting time≤10h；Cement base
Filler material includes multicomponent, and each component and its mass percent are：Cement 30~40%；Flyash 10~16%；Silicon ash 3~
8%, swelling agent 4~8%, water 15~22%, sand 20~30%；Polymer fiber volume volume 0.5%~1.5%.
(3) advantageous effect
It can be seen from the above technical proposal that the present invention is for the assembled secondary liner structure of drill+blast tunnel and compound
Formula liner structure at least has the advantages that：
(1) present invention is multiple for the assembled secondary liner structure of drill+blast tunnel and composite lining structure, use
Keel and multiple section of jurisdiction rings are formed along the tunnel is longitudinal spliced between keel, compared to the steel of conventional composite formula lining cutting
Reinforced concrete two is served as a contrast using cast-in-place by the way of, reduce tunnel excavation amount greatly, cost reduction, improve the safety of tunnel operation
Property.
(2) provided by the present invention for the assembled ultra-high performance concrete secondary liner structure of drill+blast tunnel, use
High-strength, high tenacity, high durable ultra-high performance concrete keel and section of jurisdiction ring can effectively reduce the thickness of secondary liner structure
Degree reduces tunnel excavation sectional dimension, so as to reduce tunnel excavation amount；The weight of keel and section of jurisdiction ring can be mitigated, improve it
Precision and shock resistance are made, reduces the damage in its transportation cost and work progress, shortens the construction period, lifting construction matter
Amount；Keel and section of jurisdiction ring can avoid showing for traditional two lining structures as the template of casting concrete between first lining and two linings
Field formwork link；It can also enough improving the durability of secondary liner structure, reduce the diseases such as cracking, the leak of operation phase and ask
Topic.
(3) provided by the present invention for the assembled ultra-high performance concrete secondary liner structure of drill+blast tunnel, section of jurisdiction
Ring uses section of jurisdiction with ribbing, has and improves the rigidity of structure and enhance as shear connector between section of jurisdiction with ribbing and just lining
The dual function of connection；By the optimization design of strength on concrete material grade, just lining, adhesive layer, section of jurisdiction ring three are realized
Intensity smooth transition so that realizing composite lining with excellent structural behaviour.
(4) provided by the present invention for the assembled ultra-high performance concrete secondary liner structure of drill+blast tunnel, superelevation
Sandhog can be greatly reduced using standardized designs, the prefabricated, prefabricated construction of industrialization in performance concrete keel and section of jurisdiction ring
Journey construction time and the security risk for runing the phase shorten the construction period, promote the construction quality in tunnel and operation quality, effectively reduce
The Life cycle cost in tunnel.
Description of the drawings
Fig. 1 is the assembled ultra-high performance concrete secondary liner structure that drill+blast tunnel is used for according to the embodiment of the present invention
Tunnel structure sectional schematic diagram.
Fig. 2 is the assembled ultra-high performance concrete secondary liner structure that drill+blast tunnel is used for according to the embodiment of the present invention
Overall structure diagram.
Fig. 3 is the assembled ultra-high performance concrete secondary liner structure that drill+blast tunnel is used for according to the embodiment of the present invention
Keel structure schematic diagram.
Fig. 4 is the assembled ultra-high performance concrete secondary liner structure that drill+blast tunnel is used for according to the embodiment of the present invention
Section of jurisdiction ring schematic diagram.
Fig. 5 (a), Fig. 5 (b), Fig. 5 (c) are the assembled very-high performance that drill+blast tunnel is used for according to the embodiment of the present invention
The segment conformation schematic diagram with ribbing of concrete secondary liner structure.
Fig. 6 is the assembled ultra-high performance concrete secondary liner structure that drill+blast tunnel is used for according to the embodiment of the present invention
Section of jurisdiction ring assembly schematic diagram.
Fig. 7 is the assembled ultra-high performance concrete secondary liner structure that drill+blast tunnel is used for according to the embodiment of the present invention
Keel to section of jurisdiction ring apply squeeze hold out against operating diagram (wherein, in Fig. 7 the leftmost side for two lining origination sides).
Reference sign：
1- keel, 2- sections of jurisdiction ring, 3- just lining, 4- adhesive layers, 5- tenons, 6- sections of jurisdiction, 7- sections of jurisdiction agent structure, 8- ribbed stiffeners,
9- hand holes, 10- bolts hole, 11- injected holes, 12- waterstops, 13- splice sections, 14- closure sections, 15- splicing seams, 16- actuator,
17- counter-forces stent, 18- lateral compressions device, 19- massifs.
Specific embodiment
Understand to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in further detail.
It should be noted that in attached drawing or specification description, similar or identical part all uses identical figure number.It is attached
The realization method for not illustrating or describing in figure is form known to a person of ordinary skill in the art in technical field.In addition, though this
Text can provide the demonstration of the parameter comprising particular value, it is to be understood that parameter is worth accordingly without being definitely equal to, but can connect
The error margin received is similar to be worth accordingly in design constraint.In addition, the direction term mentioned in following embodiment, such as
" on ", " under ", "front", "rear", "left", "right" etc. are only the directions of refer to the attached drawing.Therefore, the direction term used be for
Illustrate not to be used for limiting the present invention.
The present invention provides a kind of assembled secondary liner structure for drill+blast tunnel, including：Multiple keel are adjacent
The keel between have interval；And multiple section of jurisdiction rings, between the adjacent keel；Wherein, the multiple dragon
Bone and the multiple section of jurisdiction ring are along the longitudinal spliced arrangement in the tunnel.Armored concrete two compared to conventional composite formula lining cutting serves as a contrast
It by the way of cast-in-place, reduces that tunnel excavation amount is big, cost reduction, improves the security of tunnel operation.
Specifically, the keel and section of jurisdiction ring are subtracted using high-strength, high tenacity, high durable ultra-high performance concrete structure
The light weight of keel and section of jurisdiction ring, improves it and makes precision and shock resistance.
Section of jurisdiction with ribbing can be used in the section of jurisdiction ring, has and improves the rigidity of structure and enhance as shear connector with ribbing
The dual function connected between section of jurisdiction and just lining.
2~6 section of jurisdiction rings are equipped between two adjacent keel, each section of jurisdiction ring includes 4 along the circumferential splicing in the tunnel
~6 pieces of sections of jurisdiction.By being mutually matched between section of jurisdiction between the section of jurisdiction ring, between section of jurisdiction ring and keel, in the ring of section of jurisdiction
It joggle and is bolted.Secondary liner structure structure tension performance of the present invention is good, construction efficiency is high, durability is good, full Life Cycle
Current cost is low.
The present invention also provides a kind of composite lining structures, including above-mentioned secondary liner structure, further include just lining knot
Structure and the adhesive layer between the secondary liner structure and first lining structure.
Specifically, the material of the adhesive layer is cement base filler material, the keel of the secondary liner structure, section of jurisdiction ring
There is gap between top surface and the just inner surface of lining structure, after bolt is tightened in place, pass through the slip casting of the section of jurisdiction
Hole injection cement base filler material filling gap forms the adhesive layer.
The keel and section of jurisdiction ring can avoid tradition two and serve as a contrast as the template of casting concrete between first lining and two linings
The live formwork link of structure；It can also enough improving the durability of secondary liner structure, reduce cracking, the leak of operation phase
Etc. diseases problem.
The embodiment of the present invention is discussed in detail below in conjunction with the accompanying drawings.
Implement one：
Fig. 1 is that the tunnel structure section of the assembled ultra-high performance concrete secondary liner structure for drill+blast tunnel shows
It is intended to, Fig. 2 is secondary lining overall schematic, as depicted in figs. 1 and 2, and in order to achieve the above objectives, a kind of use provided by the invention
In the assembled ultra-high performance concrete secondary liner structure of drill+blast tunnel, use standardized designs, industrialize prefabricated, dress
It constructs with changing, and it can longitudinally be spelled by 2~6 section of jurisdiction rings 2 between the keel 1 of longitudinally spaced arrangement and adjacent keel 1 along tunnel
It connects, the adhesive layer 4 that 3 gap filling cement base filler material is formed just is served as a contrast with tunnel.
Fig. 3 is the keel structure signal of the assembled ultra-high performance concrete secondary liner structure for drill+blast tunnel
Figure as shown in figure 3, keel 1 are prefabricated very-high performance reinforced concrete structure or steel-concrete combined structure, uses circumferential direction
Rectangular section of the both sides with tenon 5, along the wide B1=40~100cm in length of tunnel direction, thickness H1=30~50cm, B1, H1's
Value with tunnel row track quantity, Grades of Surrounding Rock increase and improve；Keel 1 are divided into 3~5 sections along tunnel circumferential direction, and scene is spelled
Dress；There is the excessive deformation that 3 are just served as a contrast to tunnel to provide supporting and squeeze what is held out against to the offer of section of jurisdiction ring 2 between adjacent keel 1 for keel 1
Dual function.
Fig. 4 is the section of jurisdiction ring schematic diagram of the assembled ultra-high performance concrete secondary liner structure for drill+blast tunnel,
Fig. 5 (a), Fig. 5 (b), Fig. 5 (c) are the with ribbing of the assembled ultra-high performance concrete secondary liner structure for drill+blast tunnel
Segment conformation schematic diagram, as shown in Figure 4 and Figure 5, each section of jurisdiction ring 2 can pass through 4~6 pieces of prefabricated very-high performance concrete reinforced pipes
Piece 6 is assembled along tunnel circumferential direction, and inner surface is concordant with the inner surface of keel 1；Section of jurisdiction 6 is arc panel, and its underpart is section of jurisdiction
Agent structure 7, along longitudinally disposed 1~4 circumferential direction ribbed stiffener 8 in tunnel, ribbed stiffener 8 has to be improved the top surface of section of jurisdiction agent structure 7
The rigidity of section of jurisdiction 6 and enhance the dual function that connects between section of jurisdiction 6 and just lining 3 as shear connector.
Section of jurisdiction 6 is 2~4m along the wide B2 in length of tunnel direction, the thickness H2 of section of jurisdiction agent structure 7 according to tunnel number of track-lines,
Country rock species determines：
For two-lane tunnel, the corresponding H2 difference of Grades of Surrounding Rock I~V：14~18cm, 14~18cm, 16~20cm, 18
~22cm, 20~26cm；
For three lanes tunnel, the corresponding H2 of Grades of Surrounding Rock I~V are respectively：16~20cm, 16~20cm, 18~22cm,
22~26cm, 26~30cm.
The height H3 of ribbed stiffener 8 is 1/6~1/3 times of H2, and the width B3 of ribbed stiffener 8 is 1/2~3/2 times of H3.
Section of jurisdiction 6 sets hand hole 9, bolt hole 10, injected hole 11, and surrounding sets tenon 5 and configures waterstop 12, adjacent section of jurisdiction
Tenon 5 between 1 section of between 6 and adjacent section of jurisdiction 6 and keel is mutually matched with waterstop 12.
Fig. 6 is the assembled signal of section of jurisdiction ring of the assembled ultra-high performance concrete secondary liner structure for drill+blast tunnel
Figure, as shown in fig. 6, the section of jurisdiction 6 in each section of jurisdiction ring 2 is divided into splice sections 13,14 two types of closure section, wherein, closure section
14 and the splice sections 13 spliced with it using wedge-shaped arc panel, remaining splice sections 13 uses rectangle arc panel；Each section of jurisdiction ring 2
For internal arbitrary two splicing seams 15 not in sustained height, the perpendicular in adjacent tubes loop 2 along length of tunnel direction is in 180 °
Symmetrically (dotted line is tunnel center line in Fig. 6；It is splitted along section of jurisdiction ring bottom symmetrical axis, rightmost side section of jurisdiction reality and the leftmost side in Fig. 6
Section of jurisdiction is whole).
Fig. 7 is that the keel of the assembled ultra-high performance concrete secondary liner structure for drill+blast tunnel apply section of jurisdiction ring
Add the operating diagram that extruding is held out against, as shown in Figure 7 (wherein, the leftmost side is two lining origination sides in Fig. 7), along constructing tunnel direction
Two adjacent keel 1 of front end between section of jurisdiction ring 2 connect after, the keel 1 of front end are by lateral compression device 18 along tunnel
The negative direction of road construction squeezes the section of jurisdiction ring 2 between keel 1 adjacent thereto, then tightens bolt in place；Wherein, it is described lateral
Pressurizing unit 18 includes actuator 16 and counter-force stent 17.Optionally, the leg of the counter-force stent 17 is anchored in ground.
Keel 1, the top surface of section of jurisdiction ring 2 and just the gap between 3 inner surfaces of lining for 10~20cm, treat bolt tighten it is in place it
Afterwards, cement base filler material is injected by the injected hole 11 of section of jurisdiction 6 and fills gap formation adhesive layer 4, ensure keel 1,2 and of section of jurisdiction ring
Just lining 3 forms overall structure, and keel 1, section of jurisdiction ring 2 also serve as template, without adding template.
The ultra-high performance concrete that keel 1 and section of jurisdiction ring 2 use is based on mesomechanics and the theoretical progress material of maximum density
Material type selecting, grain composition optimization and mix-design, compression strength >=150MPa, tensile strength >=8MPa, bending strength >=
40MPa, elasticity modulus >=40GPa, μ ε of contraction≤300, chloride-penetration resistance coefficient≤0.02 × 10-12m2/ s, working performance are excellent
Different to be conserved using steam curing or room temperature, it can be achieved that self-compaction, one kind of ultra-high performance concrete each component mass percent is excellent
Apolegamy side is：Cement：25%~35%；Silicon ash：3%~10%；Flyash：0~10%；Quartz sand：25%~55%；Stone
Son：0~36%；Steel fibre：2.0%~3.0%；PVA fibers：0.8%~1.2%；Water：4.0%~8.0%；Water-reducing agent：
0.36%~1.2%；Wherein, quartz sand maximum particle diameter 1mm, stone maximum particle diameter 10mm.
The strength grade for the cement base filler material that adhesive layer 4 uses selects C30~C60 concrete or LC30~LC60 lightweights
Concrete, the intensity of adhesive layer 4 pass through strength on concrete material between the intensity of concrete used in first lining 3 and section of jurisdiction ring 2
The optimization design of grade, realize just lining 3, adhesive layer 4,2 three of section of jurisdiction ring intensity smooth transition, it is achieved thereby that compound
Formula liner structure.The composite lining structure includes the secondary liner structure, first lining structure and positioned at secondary liner structure
With the adhesive layer between first lining structure.The material of adhesive layer is cement base filler material, the keel of secondary liner structure, section of jurisdiction ring
Between the inner surface of top surface and first lining structure there is gap, after bolt is tightened in place, pass through the injected hole injection water of section of jurisdiction
Mud base filler material filling gap forms adhesive layer.
μ ε of the contraction of cement base filler material≤100, presetting period >=4h, final setting time≤10h, flowing sexual satisfaction pumping will
It asks, and adds cracking resistance polymer fiber, be preferred with polypropylene or vinal；Cement base filler material each component quality
A kind of optimization formula of percentage is：Cement 30~40%；Flyash 10~16%；Silicon ash 3~8%, swelling agent 4~8%, water
15~22%, sand 20~30%；Fiber volume volume 0.5%~1.5%.
Implement two：
Unlike previous embodiment one, the secondary liner structure of the invention provided in implementation two, according to actual work
Journey needs, and the section of jurisdiction 6 in section of jurisdiction ring 2 can be not provided with ribbed stiffener 8 only comprising section of jurisdiction agent structure 7.Remaining structure is the same as implementation
One, details are not described herein again.
In addition, those skilled in the art are it is to be understood that the number of the keel, section of jurisdiction ring between adjacent keel
Number, number, the number of ribbed stiffener of section of jurisdiction included by each section of jurisdiction ring etc. be not limited to specific number in above-described embodiment
Amount.
Furthermore word "comprising" does not exclude the presence of element or step not listed in the claims.Before element
Word "a" or "an" does not exclude the presence of multiple such elements.
Specification and the word of ordinal number such as " first ", " second ", " the 3rd " etc. used in claim, with modification
Corresponding element, itself is not meant to that the element has any ordinal number, does not also represent the suitable of a certain element and another element
Order in sequence or manufacturing method, the use of those ordinal numbers are only used for enabling the element with certain name and another tool
The element for having identical name can make clear differentiation.
Similarly, it should be understood that in order to simplify the present invention and help to understand one or more of each open aspect,
Above in the description of exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect following intention：I.e. required guarantor
Shield the present invention claims the more features of feature than being expressly recited in each claim.It is more precisely, such as following
Claims reflect as, open aspect is all features less than single embodiment disclosed above.Therefore,
Thus the claims for following specific embodiment are expressly incorporated in the specific embodiment, wherein each claim is in itself
Separate embodiments all as the present invention.
Particular embodiments described above has carried out the purpose of the present invention, technical solution and advantageous effect further in detail
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the present invention
Within the scope of shield.
Claims (10)
1. a kind of assembled secondary liner structure for drill+blast tunnel, including：
Multiple keel (1) have interval between the adjacent keel (1)；And
Multiple section of jurisdiction rings (2), between the adjacent keel (1)；
Wherein, the multiple keel and the multiple section of jurisdiction ring are along the longitudinal spliced setting in the tunnel.
2. the assembled secondary liner structure according to claim 1 for drill+blast tunnel, wherein, each keel (1)
Using prefabricated very-high performance reinforced concrete structure or steel-concrete combined structure, including along the 3 of the circumferential splicing in the tunnel
~5 keel sections, the circumferential both sides of keel (1) are the rectangular section with tenon (5).
3. the assembled secondary liner structure according to claim 1 for drill+blast tunnel, wherein, two adjacent keel
Between be equipped with 2~6 section of jurisdiction rings, each section of jurisdiction ring (2) includes 4~6 pieces of sections of jurisdiction (6) along the circumferential splicing in the tunnel, in
Surface is concordant with the inner surface of the keel (1)；Each section of jurisdiction is arc panel, and material is very-high performance armored concrete, is wrapped
It includes section of jurisdiction agent structure (7) and puts more energy into the section of jurisdiction agent structure top surface, along 1~4 longitudinally disposed circumferential direction of the tunnel
Rib (8).
4. the assembled secondary liner structure according to claim 3 for drill+blast tunnel, wherein,
The keel (1) are along the wide B1 in length of tunnel direction between 40~100cm, and thickness H1 is between 30~50cm, B1
Increase with the value of H1 with the increase of tunnel row track quantity and Grades of Surrounding Rock；
The section of jurisdiction (6) is along the wide B2 in length of tunnel direction between 2~4m；
The thickness H2 of the section of jurisdiction agent structure (7) is determined according to tunnel number of track-lines and country rock species, determines that principle is as follows：
(I) for two-lane tunnel, the H2 corresponding to Grades of Surrounding Rock I~V is respectively：14~18cm, 14~18cm, 16~
20cm, 18~22cm, 20~26cm,
(II) for three lanes tunnel, the H2 corresponding to Grades of Surrounding Rock I~V is respectively：16~20cm, 16~20cm, 18~
22cm, 22~26cm, 26~30cm；
The height H3 of the ribbed stiffener (8) is 1/6~1/3 times of H2, and the width B3 of ribbed stiffener (8) is 1/2~3/2 times of H3.
5. the assembled secondary liner structure according to claim 3 for drill+blast tunnel, wherein, the section of jurisdiction (6)
On be provided with hand hole (9), bolt hole (10) and injected hole (11), surrounding is provided with tenon (5) and configures waterstop (12), adjacent
Two sections of jurisdiction (6) between and adjacent section of jurisdiction (6) and keel (1) section between tenon (5) be mutually matched with waterstop (12).
6. the assembled secondary liner structure according to claim 3 for drill+blast tunnel, wherein, each section of jurisdiction ring
(2) section of jurisdiction (6) in includes splice sections (13) and closure section (14)；Adjacent and splicing the closure section (14) of the section of jurisdiction and spelling
Section (13) is connect using wedge-shaped arc panel, remaining splice sections (13) uses rectangle arc panel；Between adjacent closure section and splice sections
And splicing seams are formed between adjacent splice sections and splice sections, arbitrary two splicing seams (15) are located at difference in each section of jurisdiction ring
Height, adjacent tubes loop (2) is symmetrical in 180 ° along the perpendicular in length of tunnel direction.
7. the assembled secondary liner structure according to claim 1 for drill+blast tunnel further includes：
After section of jurisdiction ring (2) connection between two adjacent keel (1) of the front end along constructing tunnel direction, before making most
The negative direction of the keel (1) at end along constructing tunnel squeezes the lateral compression device of the section of jurisdiction ring (2) between keel (1) adjacent thereto
(18)；And
For tightening bolt in place after the extruding；
Wherein, the lateral compression device includes actuator (16) and counter-force stent (17).
8. a kind of composite lining structure, including the secondary liner structure as any one of claim 1 to 7, is also wrapped
Include just lining structure (3) and the adhesive layer (4) between the secondary liner structure and first lining structure.
9. composite lining structure according to claim 8, wherein, the material of the adhesive layer (4) is filled for cement base
Material has between the keel (1) of the secondary liner structure, the top surface of section of jurisdiction ring (2) and the just inner surface of lining structure (3)
Gap injects the cement base filler material filling gap by the injected hole (11) of the section of jurisdiction (6) and forms the adhesive layer
(4), thus the keel (1), section of jurisdiction ring (2) and first lining (3) form overall structure.
10. composite lining structure according to claim 8, wherein, the keel (1) and section of jurisdiction ring (2) are using prefabricated
Very-high performance reinforced concrete structure, compression strength >=150MPa, tensile strength >=8MPa, bending strength >=40MPa, elasticity
Modulus >=40GPa, μ ε of contraction≤300, chloride-penetration resistance coefficient≤0.02 × 10-12m2/s；The ultra-high performance concrete includes
Multicomponent, each component and its mass percent are respectively：Cement：25%~35%；Silicon ash：3%~10%；Flyash：0~
10%；Quartz sand：25%~55%；Stone：0~36%；Steel fibre：2.0%~3.0%；PVA fibers：0.8%~1.2%；
Water：4.0%~8.0%；Water-reducing agent：0.36%~1.2%；Wherein, quartz sand maximum particle diameter 1mm, stone maximum particle diameter 10mm；
The cement base filler material that the adhesive layer (4) uses selects C30~C60 concrete or LC30~LC60 lightweight concretes,
The intensity of adhesive layer (4) is consequently formed between the intensity of concrete used in first lining (3) and section of jurisdiction ring (2) and just serves as a contrast (3), glues
Tie the intensity transition of layer (4), section of jurisdiction ring (2) three；μ ε of the contraction of the cement base filler material≤100, presetting period >=4h, end
Solidifying time≤10h；Cement base filler material includes multicomponent, and each component and its mass percent are：Cement 30~40%；Flyash
10~16%；Silicon ash 3~8%, swelling agent 4~8%, water 15~22%, sand 20~30%；Polymer fiber volume volume
0.5%~1.5%.
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| CN201810100628.7A CN108119163A (en) | 2018-01-31 | 2018-01-31 | For the assembled secondary liner structure of drill+blast tunnel and composite lining structure |
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|---|---|---|---|
| CN201810100628.7A CN108119163A (en) | 2018-01-31 | 2018-01-31 | For the assembled secondary liner structure of drill+blast tunnel and composite lining structure |
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| CN109098208A (en) * | 2018-08-31 | 2018-12-28 | 郭毅轩 | A kind of seabed tunnel and its construction method |
| CN110043293A (en) * | 2019-05-28 | 2019-07-23 | 长安大学 | A kind of the tunnel morning strong supporting system and its installation method of bayonet joint |
| CN110056371A (en) * | 2019-05-28 | 2019-07-26 | 长安大学 | A kind of tunnel morning strong supporting system and its installation method |
| CN110513128A (en) * | 2019-10-12 | 2019-11-29 | 黄河勘测规划设计研究院有限公司 | Assembled suitable for Construction of Tunnel Liner is from steady template |
| CN110700211A (en) * | 2019-11-09 | 2020-01-17 | 黄河勘测规划设计研究院有限公司 | Assembly type steel segment template construction method suitable for rapid lining of horseshoe-shaped tunnel |
| CN110905548A (en) * | 2019-12-28 | 2020-03-24 | 中铁工程装备集团有限公司 | Prefabricated composite lining segment |
| CN110905555A (en) * | 2019-12-11 | 2020-03-24 | 湘潭大学 | UHPC lining structure for tunnel and construction method thereof |
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| CN110905555A (en) * | 2019-12-11 | 2020-03-24 | 湘潭大学 | UHPC lining structure for tunnel and construction method thereof |
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