CN110344872A - Shield tunnel tilts ceiling smoke discharging structure and its construction method - Google Patents
Shield tunnel tilts ceiling smoke discharging structure and its construction method Download PDFInfo
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- CN110344872A CN110344872A CN201910779301.1A CN201910779301A CN110344872A CN 110344872 A CN110344872 A CN 110344872A CN 201910779301 A CN201910779301 A CN 201910779301A CN 110344872 A CN110344872 A CN 110344872A
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- jurisdiction
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- 239000000779 smoke Substances 0.000 title claims abstract description 67
- 238000007599 discharging Methods 0.000 title claims abstract description 23
- 238000010276 construction Methods 0.000 title claims abstract description 13
- 235000019504 cigarettes Nutrition 0.000 claims abstract description 8
- 238000009826 distribution Methods 0.000 claims abstract description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 114
- 230000002787 reinforcement Effects 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 11
- 239000004567 concrete Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 210000003205 muscle Anatomy 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 4
- 238000004079 fireproofing Methods 0.000 claims description 3
- 239000003517 fume Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 229910017435 S2 In Inorganic materials 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 15
- 239000003546 flue gas Substances 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 3
- 238000003860 storage Methods 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000000391 smoking effect Effects 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009423 ventilation Methods 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/003—Ventilation of traffic tunnels
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/14—Air partitions; Air locks
- E21F1/145—Air locks
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a kind of shield tunnel inclination ceiling smoke discharging structure and its construction methods, wherein structure includes that the flue header sheet above track clearance, the exhaust smoke valve along shield tunnel longitudinally spaced distributions on flue header sheet is arranged in shield tunnel, flue header sheet favours shield tunnel horizontal center line arrangement, and exhaust smoke valve is installed on flue header sheet upper end section.The present invention is by being arranged to inclined structure for the flue header sheet in existing shield tunnel, flue gas is more gathered in the trigonum of flue header sheet and tunnel side wall formation using stack effect, under identical smoke evacuation configuring condition, increase tunnel ceiling and stores cigarette height, enhance the storage cigarette ability in tunnel below flue header sheet, simultaneously because the raising of flue header sheet high point, enhances the buoyancy of flue gas, flue gas control ability is improved；Exhaust smoke valve is installed on flue header sheet upper end section, and increases the flue gas layer thickness at exhaust smoke valve, reduces and suctions through phenomenon at exhaust smoke valve, the smoke exhaust efficiency of smoke evacuation system is available to be effectively improved.
Description
Technical field
The present invention relates to Tunnel Engineering field more particularly to a kind of shield tunnel inclination ceiling smoke discharging structures and its construction party
Method.
Background technique
With the exploitation of urban underground space, major diameter, long range shield tunnel obtain in the construction of city expressway
A large amount of application is arrived.For major diameter, long distance tunnel, continuous due to the volume of traffic increases and running speed, density
It increases, easily cause traffic accident in tunnel and induces the accidents such as fire.Tunnel fire hazard is usually associated with high temperature, flue gas suffocates,
The problems such as On The Deterioration of Visibility Over, wherein flue gas fails timely separation discharge to cause personnel's asphyxia to be to cause personnel escape difficult and outside
Rescue, which enters, implements the big key factor of relief difficulty.Due to tunnel internal space relative closure, path of discharging fume is limited, when fire
How smoking problem is effectively solved, becomes the key point for reducing casualties and property loss.Chinese " Ventilation Design for Highway Tunnel
Detailed rules and regulations " (JTG/TD70/2-02-2014) clearly proposition: " the highway and Class I highway tunnel, length L of length L > 1000m
> 2000m two, three, Class IV highway tunnel fire mechanical smoke prevention and smoke evacuation system should be set ".
In the prior art, when tunnel closed section is longer, it will usually emphasis smokejack be set in tunnel upper to solve fire
Calamity smoking problem, but due to the influence of the factors such as flue gas layer suctions through, smoke exhaust efficiency, control when occurring fire in tunnel for flue gas
System does not often reach ideal effect.According to conventionally form design and construction smokejack, as shown in figure 3, its disadvantage has: 1) fiery
After the horizontal flue header sheet a of plume hits tunnel top, immediately to both sides spread, if flue gas cannot timely stability contorting, will be serious
Influence the safe condition of fire source upstream and downstream；2) using the form of horizontal flue header sheet a, at the horizontal vertical center flue header sheet a
Easily occur suctioning through phenomenon at exhaust smoke valve b, volume inhales large quantity of air, seriously affects smoke exhaust efficiency.
In consideration of it, overcoming the above defect in the prior art, providing new shield tunnel inclination ceiling smoke discharging structure and applying
Work method becomes this field technical problem urgently to be resolved.
Summary of the invention
The purpose of the present invention is to solve the shortcomings of the prior art place, tunnel ceiling storage cigarette height can be increased by providing one kind
Degree, the buoyancy for enhancing flue gas reduce the shield tunnel inclination ceiling smoke discharging structure for suctioning through phenomenon at exhaust smoke valve and its apply
Work method.
This shield tunnel provided by the invention tilts ceiling smoke discharging structure, including track clearance is arranged in shield tunnel
The flue header sheet of top, the exhaust smoke valve along shield tunnel longitudinally spaced distributions on flue header sheet, flue header sheet favour shield
Tunnel horizontal center line arrangement, exhaust smoke valve are installed on flue header sheet upper end section.
Shield tunnel includes section of jurisdiction, is equipped with corresponding arrangement above the track clearance on the section of jurisdiction inner surface of the left and right sides
Bracket, the connecting line of two brackets favour shield tunnel horizontal center line arrangement, and flue header sheet is fixed on bracket and and shield
Tunnel horizontal center line is in tilted layout.
Reinforcing bar connector is embedded in bracket, the arrangement of reinforcement of bracket passes through reinforcing bar connector and the connection being embedded in section of jurisdiction
Reinforcing bar is connected.Flue header sheet is connected by stud with the reinforcing bar connector in bracket.
Stud is embedded in bracket, stud one end is connected by reinforcing bar connector with the connection reinforcing bar being embedded in section of jurisdiction
Connect, one end is connected through flue header sheet with threaded fastener, flue header sheet is erected between two brackets by stud.
Flue header sheet and shield tunnel horizontal center line intersect 10 °~20 ° angles and arrange.
Exhaust smoke valve is away from flue header sheet upper end 48~52cm of side.
The smoke outlet of exhaust smoke valve is rectangle and its long edge tunnel is longitudinally arranged.
The present invention also provides a kind of construction methods suitable for above-mentioned shield tunnel inclination ceiling smoke discharging structure, including such as
Lower step:
S1, prefabricated pipe section, the pre-buried connection reinforcing bar stretched out on the inside of section of jurisdiction in section of jurisdiction, by the pipe sheet assembling in tunnel knot
In structure, connection reinforcing bar is placed in above track clearance, the connecting line inclination of the connection reinforcing bar of corresponding arrangement at left and right sides of shield tunnel
It is arranged in shield tunnel horizontal center line；
Reinforcing bar connector is connected on S2, the connection reinforcing bar on the inside of section of jurisdiction, is separately connected on different reinforcing bar connectors
For fixing the stud of flue header sheet and the arrangement of reinforcement of bracket, ox is cast on connection reinforcing bar, reinforcing bar connector, arrangement of reinforcement and stud
Leg, bracket are placed in above track clearance；
S3, the flue header sheet for being prefabricated with stud mounting hole and exhaust smoke valve, exhaust smoke valve are located at the side edge of flue header sheet, will arrange
Flue sheet is mounted on bracket, and stud passes through stud mounting hole and connect the bracket being fixed on flue header sheet in section of jurisdiction with nut
On, exhaust smoke valve is located at flue header sheet upper end section；
S4, microlith silicon is poured in the gap of flue header sheet with bracket junction be filled；
S5, positioning, the installation that section of jurisdiction and flue header sheet will be completed after all exposed ironwares fire proofing material packing.
Further, the process of prefabricated pipe section is as follows in step S1:
S11, configuration is located at outer circumferential arrangement of reinforcement, inner circumferential arrangement of reinforcement, hook on the inside of section of jurisdiction on the outside of section of jurisdiction in section of jurisdiction
Hang on outer circumferential arrangement of reinforcement and stretch out the first connection reinforcing bar on the inside of section of jurisdiction and the second connection reinforcing bar, the first connection reinforcing bar and second
Reinforcing bar is connected to arrange along bracket inclined direction on section of jurisdiction, the part that the first connection reinforcing bar stretches out on the inside of section of jurisdiction is thread segment,
The end that second connection reinforcing bar stretches out on the inside of section of jurisdiction is the thread segment of bending vertically upward；
S12, it pours to form section of jurisdiction；
S13, by pipe sheet assembling in tunnel structure, first connection reinforcing bar and second connection reinforcing bar be placed on track clearance
The connecting line of side, the first connection reinforcing bar of the corresponding arrangement in the shield tunnel left and right sides and the second connection reinforcing bar favours shield tunnel
Horizontal center line arrangement.
Further, the process that bracket is cast in step S2 is as follows:
S21, it is respectively mounted reinforcing bar connector on the thread segment of the first connection reinforcing bar and the second connection reinforcing bar, connected with first
The other end for connecing the connected reinforcing bar connector of reinforcing bar screws the arrangement of reinforcement of connection bracket, connects connecting the connected reinforcing bar of reinforcing bar with second
The other end for refuting device screws the stud connected for fixing flue header sheet；
S22, casting concrete is made on the first connection reinforcing bar, the second connection reinforcing bar, reinforcing bar connector, arrangement of reinforcement and stud
Bracket, so that section of jurisdiction becomes an armored concrete entirety with the bracket cast, and bracket is placed in above track clearance.
The present invention is by being arranged to inclined structure for the flue header sheet in existing shield tunnel, using stack effect by cigarette
Gas is more gathered in the trigonum that flue header sheet and tunnel side wall are formed, and under identical smoke evacuation configuring condition, increases tunnel
Ceiling stores cigarette height, enhances the storage cigarette ability in tunnel below flue header sheet, simultaneously because the raising of flue header sheet high point, enhancing
The buoyancy of flue gas improves flue gas control ability；Exhaust smoke valve is installed on flue header sheet upper end section, and increases exhaust smoke valve
The flue gas layer thickness at place reduces the phenomenon that suctions through at exhaust smoke valve, and the smoke exhaust efficiency of smoke evacuation system is available to be effectively improved, and subtracts
Few flue gas coverage effectively controls flue gas range of scatter, and backlayering keeps good, and it is empty to provide preferable safety for personnel
Between.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is enlarged structure schematic diagram at A in Fig. 1.
Fig. 3 is the structural schematic diagram of the prior art.
Label and corresponding component name shown in figure are as follows:
1, flue header sheet；11, stud mounting hole；
2, exhaust smoke valve；
3, bracket；31, reinforcing bar connector；32, arrangement of reinforcement；33, stud；
4, section of jurisdiction；41, lane plate；42, building line；43, outer circumferential arrangement of reinforcement；44, inner circumferential arrangement of reinforcement；45, the first connection
Reinforcing bar；46, the second connection reinforcing bar.
Specific embodiment
It can be seen that this shield tunnel inclination ceiling smoke discharging structure of the present invention, including shield tunnel, row from Fig. 1 and Fig. 2
Flue sheet 1 and exhaust smoke valve 2, wherein
Shield tunnel is assembled by multiple groups section of jurisdiction 4, is transversely provided with lane plate 41 on the inside of section of jurisdiction 4, and lane plate is by shield tunnel
Road inner space is divided into the autos only road on top and the non-motor vehicle walkway of lower part, the non-motor vehicle walkway of lower part
Three spaces are divided by two pieces of longitudinally disposed mid-boards, is equipped with above autos only road and meets motor vehicle running requirement
Building line 42, if being disposed on 4 inner surface of section of jurisdiction at left and right sides of above the track clearance 42 along shield tunnel longitudinal gap
Dry bracket 3, is arranged in the bracket 3 of 42 upper left of track clearance and rotates clockwise α ° of tilt angle with horizontal direction and be arranged in pipe
4 upper left side of piece is arranged in the bracket 3 of 42 upper right of track clearance with horizontal direction and rotates (180- α) ° tilt angle counterclockwise
It is arranged in 4 right side of section of jurisdiction, the connecting line and shield tunnel horizontal center line of the bracket 3 of the bracket 3 and right side in left side intersect α °
Angle arrangement,
Flue header sheet 1 is fixed between the bracket 3 of 4 inside of section of jurisdiction, the bracket 3 and shield that flue header sheet 1 passes through inclination arrangement
Structure tunnel horizontal center line intersects α ° of angle arrangement,
Exhaust smoke valve 2 in the upper end section of flue header sheet 1, can be imitated preferably using chimney along shield tunnel longitudinally spaced distributions
It should discharge fume.
In the present invention, because there are joining sections for constructing tunnel process flue header sheet 1 and 3 structure of bracket, to guarantee exhaust smoke valve 2
It is not blocked by bracket 3, exhaust smoke valve 2 is arranged away from 48~52cm at 1 left side edge of flue header sheet.
In the present invention, the smoke outlet of exhaust smoke valve 2 is rectangle and its long edge tunnel is longitudinally arranged.
In the present invention, it is contemplated that flue header sheet 1 cannot invade the track clearance 42 in tunnel 1, enough in order to guarantee to have
Tilt angle stores cigarette height to promote tunnel, and the bracket 3 that the present invention is arranged in 42 upper left of track clearance is suitable with horizontal direction
Hour hands rotate 10 °~20 ° tilt angles, and the bracket 3 for being arranged in 42 upper right of track clearance is rotated counterclockwise with horizontal direction
Corresponding 170 °~160 ° tilt angles.
It will be seen from figure 1 that the bracket 3 that the present invention is arranged in 42 upper left of track clearance is revolved clockwise with horizontal direction
Turn 15 ° of tilt angles, the bracket 3 for being arranged in 42 upper right of track clearance is rotated corresponding 165 ° counterclockwise with horizontal direction and inclined
Rake angle.
Figure it is seen that reinforcing bar connector 31, arrangement of reinforcement 32 and stud 33 are embedded in bracket 3 of the invention, in pipe
Outer circumferential arrangement of reinforcement 43, the connection reinforcing bar 45 of inner circumferential arrangement of reinforcement 44, first and the second connection reinforcing bar 46 are embedded in piece 4,
Outer circumferential direction arrangement of reinforcement 43 is located at 4 outside of section of jurisdiction, and inner circumferential arrangement of reinforcement 44 is located at 4 inside of section of jurisdiction, the first connection 45 He of reinforcing bar
One end that second connection reinforcing bar 46 stretches to 4 outside of section of jurisdiction has tail end hook, and the first connection reinforcing bar 45 and the second connection reinforcing bar 46 are logical
It crosses tail end hook and catches on outer circumferential arrangement of reinforcement 43, and arranged along 3 inclined direction of bracket on section of jurisdiction 4, the first connection reinforcing bar 45 stretches out
Part on the inside of section of jurisdiction is thread segment, and the end that the second connection reinforcing bar 46 stretches out 4 inside of section of jurisdiction is the screw thread of bending vertically upward
Section；
Reinforcing bar connector 31 is the pipe structure of both ends screw hole, and arrangement of reinforcement 32 connect reinforcing bar with first by reinforcing bar connector 31
45 are connected, and bracket 3 is connected by reinforcing bar connector 31 with section of jurisdiction 4；33 one end of stud is embedded in bracket 3 and passes through steel
Muscle connector 31 connect reinforcing bar 46 with second and is connected, and the other end stretches out bracket 3 and runs through flue header sheet 1 and threaded fastener phase
Connection, flue header sheet 1 are erected between two brackets 3 by stud 33.
The construction method of this shield tunnel inclination ceiling smoke discharging structure of the present invention, includes the following steps:
S1, prefabricated pipe section 4, the pre-buried connection reinforcing bar stretched out on the inside of section of jurisdiction, is assembled in tunnel knot for section of jurisdiction 4 in section of jurisdiction 4
In structure, connection reinforcing bar is placed in the 42 top left and right sides of track clearance, and the connection reinforcing bar positioned at left side is higher than the connection positioned at right side
The connecting line of reinforcing bar, the connection reinforcing bar of the corresponding arrangement in the shield tunnel left and right sides favours shield tunnel horizontal center line arrangement；
S2, reinforcing bar connector 31 is connected on the connection reinforcing bar of 4 inside of section of jurisdiction, on different reinforcing bar connectors 31 respectively
Connection is for fixing the stud 33 of flue header sheet 1 and the arrangement of reinforcement 32 of bracket 3, in connection reinforcing bar, reinforcing bar connector 31,32 and of arrangement of reinforcement
Bracket 3 is made in casting concrete on stud 33, and bracket 3 is placed in 42 top of track clearance；
S3, the flue header sheet 1 for being prefabricated with stud mounting hole 11 and exhaust smoke valve 2, exhaust smoke valve 2 is along shield tunnel longitudinal gap point
Flue header sheet 1 is mounted on bracket 3 by cloth in the side edge of flue header sheet 1, and stud 33 passes through stud mounting hole 11 and nut connects
It connects on the bracket 3 that flue header sheet 1 is fixed in section of jurisdiction 4, exhaust smoke valve 2 is located at 1 upper end section of flue header sheet away from 1 left side of flue header sheet
At 48~52cm of edge；
S4, microlith silicon is poured in the gap of flue header sheet 1 with 3 junction of bracket be filled；
S5, positioning, the installation that section of jurisdiction 4 and flue header sheet 1 will be completed after all exposed ironwares fire proofing material packing.
In the step S1 of shield tunnel of the present invention inclination ceiling smoke discharging structure construction method, the process of prefabricated pipe section is such as
Under:
S11, configuration is located at outer circumferential arrangement of reinforcement 43, the inner circumferential arrangement of reinforcement on the inside of section of jurisdiction on the outside of section of jurisdiction in section of jurisdiction 4
44, it is hooked on outer circumferential arrangement of reinforcement and stretches out the first connection reinforcing bar 45 on the inside of section of jurisdiction and the second connection reinforcing bar 46, the first connection
Reinforcing bar 45 and the second connection reinforcing bar 46 arrange that the first connection reinforcing bar 45 stretches out section of jurisdiction 4 on section of jurisdiction 4 along 3 inclined direction of bracket
The part of inside is thread segment, and the end that the second connection reinforcing bar 46 stretches out on the inside of section of jurisdiction is the thread segment of bending vertically upward；
S12, it pours to form section of jurisdiction 4；
S13, section of jurisdiction 4 is assembled in tunnel structure, is transversely provided with lane plate 41 on the inside of section of jurisdiction 4, lane plate is by shield tunnel
Road inner space is divided into the autos only road on top and the non-motor vehicle walkway of lower part, the non-motor vehicle walkway of lower part
Three spaces are divided by two pieces of longitudinally disposed mid-boards, is equipped with above autos only road and meets motor vehicle running requirement
Building line 42, the first connection reinforcing bar 45 and the second connection 46 muscle of steel are placed in 42 top of track clearance, shield tunnel or so two
The connecting line of first connection reinforcing bar 45 of the corresponding arrangement in side and the second connection reinforcing bar 46 favours shield tunnel horizontal center line cloth
It sets.
In the step S2 of shield tunnel of the present invention inclination ceiling smoke discharging structure construction method, the process of bracket is cast such as
Under:
S21, first connection reinforcing bar 45 and second connection reinforcing bar 46 thread segment on be respectively mounted reinforcing bar connector 31, with
The other end of the connected reinforcing bar connector 31 of first connection reinforcing bar 45 screws the arrangement of reinforcement 32 of connection bracket 3, is connecting steel with second
The other end of the connected reinforcing bar connector 31 of muscle 46 screws the stud 33 connected for fixing flue header sheet 1；
S22, before cast-in-place bracket, part dabbing that 4 inner surface of section of jurisdiction is in contact with bracket 3；In the first connection
Bracket 3, bracket 3 is made in casting concrete on the connection of reinforcing bar 45, second reinforcing bar 46, reinforcing bar connector 31, arrangement of reinforcement 32 and stud 33
It is placed in 42 top of track clearance, section of jurisdiction 4 is made to become an armored concrete entirety with the bracket 3 cast.
In the present invention, flue header sheet 1 is ordinary reinforced concrete structure.
Claims (10)
1. a kind of shield tunnel tilts ceiling smoke discharging structure, including the flue header sheet above track clearance is arranged in shield tunnel
(1), the exhaust smoke valve (2) along shield tunnel longitudinally spaced distributions on flue header sheet, it is characterised in that: flue header sheet favours shield
Structure tunnel horizontal center line arrangement, exhaust smoke valve are installed on flue header sheet upper end section.
2. shield tunnel according to claim 1 tilts ceiling smoke discharging structure, it is characterised in that: shield tunnel includes section of jurisdiction
(4), the bracket (3) of corresponding arrangement, the connection of two brackets are equipped with above the track clearance on the section of jurisdiction inner surface of the left and right sides
Line favours shield tunnel horizontal center line arrangement, and flue header sheet is fixed on bracket and tilts with shield tunnel horizontal center line
Arrangement.
3. shield tunnel according to claim 2 tilts ceiling smoke discharging structure, it is characterised in that: be embedded with steel in bracket
The arrangement of reinforcement (32) of muscle connector (31), bracket is connected by reinforcing bar connector with the connection reinforcing bar being embedded in section of jurisdiction, is discharged fume
Guidance tape is connected by stud (5) with the reinforcing bar connector in bracket.
4. shield tunnel according to claim 3 tilts ceiling smoke discharging structure, it is characterised in that: be embedded with spiral shell in bracket
Column (33), stud one end is connected by reinforcing bar connector with the connection reinforcing bar being embedded in section of jurisdiction, one end is through flue header sheet
It is connected with threaded fastener, flue header sheet is erected between two brackets by stud.
5. shield tunnel according to any one of claims 1 to 4 tilts ceiling smoke discharging structure, it is characterised in that: flue header sheet
10 °~20 ° angles are intersected with shield tunnel horizontal center line to arrange.
6. shield tunnel according to any one of claims 1 to 4 tilts ceiling smoke discharging structure, it is characterised in that: exhaust smoke valve away from
Flue header sheet upper end 48~52cm of side.
7. shield tunnel according to any one of claims 1 to 4 tilts ceiling smoke discharging structure, it is characterised in that: exhaust smoke valve
Smoke outlet is rectangle and its long edge tunnel is longitudinally arranged.
8. a kind of construction method suitable for any shield tunnel inclination ceiling smoke discharging structure of claim 1 to 7, feature
It is to include the following steps:
S1, prefabricated pipe section, the pre-buried connection reinforcing bar stretched out on the inside of section of jurisdiction in section of jurisdiction, by the pipe sheet assembling in tunnel structure
In, connection reinforcing bar is placed in above track clearance, and the connecting line of the connection reinforcing bar of corresponding arrangement favours at left and right sides of shield tunnel
Shield tunnel horizontal center line arrangement；
Reinforcing bar connector is connected on S2, the connection reinforcing bar on the inside of section of jurisdiction, is separately connected and is used on different reinforcing bar connectors
The stud of fixed flue header sheet and the arrangement of reinforcement of bracket, cast bracket, ox on connection reinforcing bar, reinforcing bar connector, arrangement of reinforcement and stud
Leg is placed in above track clearance；
S3, the flue header sheet for being prefabricated with stud mounting hole and exhaust smoke valve, exhaust smoke valve is located at the side edge of flue header sheet, by smokejack
Plate is mounted on bracket, and stud passes through stud mounting hole and connect on the bracket that flue header sheet is fixed in section of jurisdiction with nut, is arranged
Cigarette valve is located at flue header sheet upper end section；
S4, microlith silicon is poured in the gap of flue header sheet with bracket junction be filled；
S5, positioning, the installation that section of jurisdiction and flue header sheet will be completed after all exposed ironwares fire proofing material packing,
It is included between section of jurisdiction and bracket setting reinforcing bar connector, reinforcing bar connector one end and is embedded in duct pieces of shield tunnel
In section of jurisdiction transverse direction arrangement of reinforcement be connected, the other end is connected with the bracket transverse direction arrangement of reinforcement in bracket, and the reinforcing bar connector is poured
Build a part for becoming cast-in-place bracket in concrete.
9. shield tunnel according to claim 8 tilts ceiling smoke discharging structure construction method, which is characterized in that in step S1
The process of prefabricated pipe section is as follows:
S11, the outer circumferential arrangement of reinforcement being located on the outside of section of jurisdiction is configured in section of jurisdiction, the inner circumferential arrangement of reinforcement on the inside of section of jurisdiction, is hooked on
On outer circumferential direction arrangement of reinforcement and stretch out the first connection reinforcing bar on the inside of section of jurisdiction and the second connection reinforcing bar, the first connection reinforcing bar and the second connection
Reinforcing bar on section of jurisdiction along bracket inclined direction arrange, first connection reinforcing bar stretch out section of jurisdiction on the inside of part be thread segment, second
Connect the thread segment that the end that reinforcing bar stretches out on the inside of section of jurisdiction is bending vertically upward；
S12, it pours to form section of jurisdiction；
S13, by pipe sheet assembling in tunnel structure, the first connection reinforcing bar and the second connection reinforcing bar are placed in above track clearance,
The connecting line of the first connection reinforcing bar of corresponding arrangement and the second connection reinforcing bar favours shield tunnel water at left and right sides of shield tunnel
Flat center line arrangement.
10. shield tunnel according to claim 9 tilts ceiling smoke discharging structure construction method, which is characterized in that step S2
In cast bracket process it is as follows:
S21, it is respectively mounted reinforcing bar connector on the thread segment of the first connection reinforcing bar and the second connection reinforcing bar, is connecting steel with first
The other end of the connected reinforcing bar connector of muscle screws the arrangement of reinforcement of connection bracket, is connecting the connected reinforcing bar connector of reinforcing bar with second
The other end screw the stud connected for fixing flue header sheet；
S22, ox is made in casting concrete on the first connection reinforcing bar, the second connection reinforcing bar, reinforcing bar connector, arrangement of reinforcement and stud
Leg, so that section of jurisdiction becomes an armored concrete entirety with the bracket cast, and bracket is placed in above track clearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910779301.1A CN110344872A (en) | 2019-08-22 | 2019-08-22 | Shield tunnel tilts ceiling smoke discharging structure and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910779301.1A CN110344872A (en) | 2019-08-22 | 2019-08-22 | Shield tunnel tilts ceiling smoke discharging structure and its construction method |
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| CN110344872A true CN110344872A (en) | 2019-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910779301.1A Pending CN110344872A (en) | 2019-08-22 | 2019-08-22 | Shield tunnel tilts ceiling smoke discharging structure and its construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116291663A (en) * | 2023-03-20 | 2023-06-23 | 中交隧道工程局有限公司 | Flue plate bracket capable of providing horizontal force and flue plate optimal design method |
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| CN116291663B (en) * | 2023-03-20 | 2024-04-16 | 中交隧道工程局有限公司 | Flue plate bracket capable of providing horizontal force and flue plate optimal design method |
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