CN110410101A - Tunnel deformation segment again supporting when heavy type inverted arch steelframe construction method - Google Patents
Tunnel deformation segment again supporting when heavy type inverted arch steelframe construction method Download PDFInfo
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- CN110410101A CN110410101A CN201910719995.XA CN201910719995A CN110410101A CN 110410101 A CN110410101 A CN 110410101A CN 201910719995 A CN201910719995 A CN 201910719995A CN 110410101 A CN110410101 A CN 110410101A
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- 238000010276 construction Methods 0.000 title claims abstract description 119
- 238000009434 installation Methods 0.000 claims abstract description 45
- 238000002372 labelling Methods 0.000 claims abstract description 9
- 238000007363 ring formation reaction Methods 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000007569 slipcasting Methods 0.000 claims description 7
- 239000011435 rock Substances 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
-
- 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
-
- 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
- E21D11/14—Lining predominantly with metal
- E21D11/28—Longitudinal struts, i.e. longitudinal connections between adjoining arches
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention provide a kind of tunnel deformation segment again supporting when heavy type inverted arch steelframe construction method, comprising: S0) in pneumatically placed concrete at the beginning of the inverted arch portion of tunnel deformation segment；S1 inverted arch portion) is divided into multiple circulation construction sections, in each circulation construction section internal labeling inverted arch installation site, each inverted arch installation site is correspondingly arranged with the position for being equipped with arch wall heavy type steelframe；S2) assembled heavy inverted arch steelframe, and the heavy inverted arch steelframe after assembly is hoisted in specified inverted arch installation site, so that the heavy inverted arch steelframe in the inverted arch installation site closes cyclization with corresponding arch wall heavy type steelframe；S3 multiple inverted arch connectors are performed between the heavy inverted arch steelframe after two adjacent assembly) to connect two adjacent two heavy inverted arch steelframes.Assembled heavy inverted arch steelframe is hoisted to the installation of inverted arch installed position by the construction method, is saved the shipping time that transport one by one forms the inverted arch steelframe section of heavy inverted arch steelframe, is improved the construction efficiency of heavy inverted arch steelframe.
Description
Technical field
The present invention relates to technical field of tunnel construction, and in particular, to a kind of tunnel deformation segment again supporting when heavy type face upward
Encircle the construction method of steelframe.
Background technique
In constructing tunnel, when in the stratum that construction tunnel is in weak surrounding rock, especially construction tunnel is in coal measures
In stratum, by anticlinal nucleus rock stratum it is slow incline, rock stratum is weak, by factors such as high low stress, hole group's effects is influenced that supporting is completed
Tunnel deforms, even if main tunnel is put down using the lining cutting of large deformation A type, III type lining cutting of large deformation after optimization in construction early period
It leads and has excavated and do not apply the floor section just measures such as Zhi Zengshe heavy type inverted arch steelframe progress supporting, the part paragraph in tunnel still meets with
Serious deformation failure has been arrived, the short abutment wall cracking of just branch chip off-falling, steelframe torsional deformation, inverted arch, lining concrete flake-off has occurred
Phenomena such as block and bar bending, inverted arch tunnel bottom protuberance.In order to guarantee tunnel support structure and construction safety, guarantee what secondary village was built
Design thickness, must the supporting construction to soft rock large deformation section remove and country rock digs, while performing and meeting construction requirement
New supporting construction.When performing the inverted arch portion supporting construction in new supporting construction, a large amount of heavy inverted arch is set up in inverted arch portion
Steelframe, as the important feature of inverted arch supporting, the erection speed of heavy inverted arch steelframe influences whether the construction efficiency of inverted arch supporting,
Every Pin heavy type inverted arch steelframe is all made of multiple inverted arch steelframe sections, and current heavy inverted arch steelframe construction method is will be heavy
Inverted arch steelframe section in inverted arch steelframe is routed to the designated position in inverted arch portion, the time-consuming and laborious construction effect for influencing inverted arch supporting one by one
Therefore rate needs a kind of construction method of heavy inverted arch steelframe to solve the problems, such as above-mentioned at least one.
Summary of the invention
The purpose of the present invention is be directed to the generation large deformation in the tunnel main tunnel in weak surrounding rock, coal measure strata to cause inverted arch
Surrouding rock deformation around portion causes inverted arch Supporting Structure deformation, when performing inverted arch supporting construction again, in heavy inverted arch steelframe
Inverted arch steelframe section one by one assembled laying construction low efficiency the problem of, provide a kind of tunnel deformation segment again supporting when heavy type inverted arch
The construction method of steelframe performs construction efficiency when heavy inverted arch steelframe to improve again.
To achieve the goals above, the embodiment of the present invention provide a kind of tunnel deformation segment again supporting when heavy type inverted arch steelframe
Construction method, the construction method executes after the completion of the arch wall supporting of supporting section tunnel deformation segment, the arch wall branch
Agree with the arch wall during shield and arch wall steelframe be installed, the construction method is the following steps are included: S0) facing upward in tunnel deformation segment
Just spray the concrete of the first given thickness in arch；S1 the inverted arch portion of tunnel deformation segment) is divided into multiple circulation construction sections, and
Each circulation construction section internal labeling goes out multiple inverted arch installation sites, wherein each inverted arch installation site and being equipped with the arch
The position of wall heavy type steelframe is correspondingly arranged；S2) assembled heavy inverted arch steelframe, and the heavy inverted arch steelframe after assembly is hoisted to finger
In fixed inverted arch installation site, so that the heavy inverted arch steelframe being mounted in the inverted arch installation site and corresponding arch wall heavy-duty steel
Frame closing cyclization；S3 multiple inverted arch connectors) are performed between the heavy inverted arch steelframe after two adjacent assembly, to connect
Heavy inverted arch steelframe after stating two adjacent assembly.
Specifically, step S1) in each circulation construction section internal labeling go out multiple inverted arch installation sites, wherein each face upward
Arch installation site is correspondingly arranged with the position for being equipped with the arch wall heavy type steelframe, comprising: along tunnel deformation segment to supporting section
It is longitudinal, mark arch wall heavy type steelframe quantity corresponding with the circulation construction section identical more in the inverted arch portion of the circulation construction section
A inverted arch camber line, so that the position of each inverted arch camber line and the arch wall heavy type steelframe of label is correspondingly arranged；Based on more
A inverted arch camber line determines the multiple inverted arch installation site.
Specifically, the construction method further include: after step S2) and before step S3), construct in the circulation
The inverted arch portion of section is laid with steel mesh, and the heavy inverted arch steelframe is fixed with the steel mesh near the heavy type inverted arch steelframe.
Specifically, the construction method further include: after step S3), sprayed again to the circulation construction section in inverted arch portion
The concrete of second given thickness simultaneously performs inverted arch in the circulation construction section after the concrete of multiple spray reaches given set strength
Anchor pole.
Specifically, the inverted arch anchor pole that performs includes: along the longitudinal according to given longitudinal pitch mark of the circulation construction section
Remember multiple inverted arch construction lines and determines multiple construction coordinates according to given lateral loops spacing on each inverted arch construction line
Point；The bolthole of given depth is drilled out on each construction coordinate point；Long anchor pole is placed into bolthole described in each,
And slip casting is stopped until reaching predetermined grouting amount by each long anchor pole slip casting into bolthole.
Specifically, the longitudinal pitch and the lateral loops spacing are between 1.0m-1.3m.
The present invention provide a kind of tunnel deformation segment again supporting when heavy type inverted arch steelframe construction method, which exists
It is executed after the completion of arch wall supporting, the inverted arch portion of tunnel deformation segment is divided into multiple circulation construction sections using when the construction method,
It constructs in each circulation construction section, in order to ensure the supporting intensity of each circulation construction section, is applied in each circulation one by one
The quantity of the quantity of the heavy inverted arch steelframe performed in workshop section arch wall heavy type steelframe corresponding with the circulation construction section is identical, is pacifying
When filling heavy inverted arch steelframe, first go out inverted arch installation site in a circulation construction section internal labeling, then the heavy type that assembly is completed is faced upward
Arch steelframe is hoisted to specified inverted arch installed position, is hoisted to inverted arch installation site using by assembled heavy inverted arch steelframe
Method, when saving transport required when handling one by one forms inverted arch steelframe section in heavy inverted arch steelframe to inverted arch installation site
Between, improve the construction efficiency of heavy inverted arch steelframe, will be hoisted to later the heavy inverted arch steelframe of inverted arch installed position with it is right
The arch wall heavy type steelframe connection closing cyclization answered, connection heavy inverted arch steelframe per adjacent two reinforce the integer support in tunnel
Intensity.
Tunnel deformation segment provided by the invention again supporting when heavy type inverted arch steelframe construction method, by assembly complete weight
Type inverted arch steelframe is hoisted to the installation of inverted arch installed position, saves the inverted arch steelframe section that transport one by one forms heavy inverted arch steelframe
Shipping time, improve the construction efficiency of heavy inverted arch steelframe.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 be embodiment of the present invention provide tunnel deformation segment again supporting when heavy type inverted arch steelframe construction method
Flow chart.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, top, bottom " is usually needle
For direction shown in the drawings either for it is vertical, on vertical or gravity direction for each component mutual alignment relation
Word is described.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Embodiment of the present invention provide a kind of tunnel deformation segment again supporting when heavy type inverted arch steelframe construction method, Fig. 1
For tunnel deformation segment again supporting when heavy type inverted arch steelframe construction method flow chart, as shown in Figure 1, the construction method exists
Executing after the completion of the arch wall supporting of supporting section for tunnel deformation segment, agrees with the arch wall during the arch wall supporting and is equipped with arch
Wall steelframe, the construction method is the following steps are included: S0) in the coagulation of the first given thickness of spray at the beginning of the inverted arch portion of tunnel deformation segment
Soil；S1 the inverted arch portion of tunnel deformation segment) is divided into multiple circulation construction sections, and is gone out in each circulation construction section internal labeling
Multiple inverted arch installation sites, wherein each inverted arch installation site is correspondingly arranged with the position for being equipped with the arch wall heavy type steelframe；
S2) assembled heavy inverted arch steelframe, and the heavy inverted arch steelframe after assembly is hoisted in specified inverted arch installation site, so that peace
Heavy inverted arch steelframe in the inverted arch installation site closes cyclization with corresponding arch wall heavy type steelframe；S3) adjacent two
Multiple inverted arch connectors are performed between heavy inverted arch steelframe after a assembly, to connect the heavy type after two adjacent assembly
Inverted arch steelframe.
Tunnel deformation segment provided by the invention again supporting when heavy type inverted arch steelframe construction method, by by assembled weight
Type inverted arch steelframe handling saves the inverted arch steel in the heavy inverted arch steelframe of the composition of handling one by one to specified inverted arch installed position
The time of frame section accelerates the installation speed of heavy inverted arch steelframe, improves the construction efficiency of inverted arch construction.
In one embodiment, original supporting is removed in tunnel deformation segment and the tunnel deformation segment for removing original supporting is pressed
It is required that being digged, the tunnel deformation segment for completing to dig part to completion after digging performs arch wall supporting again, is digging later
Partial tunnel deformation segment performs inverted arch supporting again, is gone when performing inverted arch supporting again using construction method provided by the invention
Heavy inverted arch steelframe important in inverted arch supporting is set up, to improve inverted arch construction efficiency；In construction method provided by the present invention
The tunnel deformation segment being previously mentioned refer both to complete dig after tunnel deformation segment, wherein for inverted arch portion dig depth reach 5 meters with
On inverted arch deep basal pit, when carrying out heavy inverted arch steelframe using the construction method and setting up, first in the inverted arch portion of tunnel deformation segment
Just the first given thickness of spray is not less than the concrete of 4cm, later draws the inverted arch portion for completing the just tunnel deformation segment of pneumatically placed concrete
Be divided into multiple circulation construction sections, go out inverted arch installation site in each circulation construction section internal labeling, the quantity of inverted arch installation site with
The quantity of the corresponding arch wall heavy type steelframe of the circulation construction section is identical, later hangs assembled heavy inverted arch steelframe by single track purlin
Handling saves the desired transport of inverted arch steelframe section that lifting back and forth forms heavy inverted arch steelframe to specified inverted arch installation site
Time accelerates the installation effectiveness of heavy inverted arch steelframe.
In order to determine the installation site of each heavy inverted arch steelframe, specifically, step S1) in each circulation construction section
Internal labeling goes out multiple inverted arch installation sites, wherein each inverted arch installation site and the position pair for being equipped with the arch wall heavy type steelframe
It should be arranged, comprising: along the longitudinal to supporting section of tunnel deformation segment, mark in the inverted arch portion of the circulation construction section and applied with the circulation
The identical multiple inverted arch camber lines of the corresponding arch wall heavy type steelframe quantity of workshop section so that label each inverted arch camber line with it is described
The position of arch wall heavy type steelframe is correspondingly arranged；The multiple inverted arch installation site is determined based on multiple inverted arch camber lines.
In one embodiment, each in the circulation construction multiple inverted arch camber lines of segment mark when determining inverted arch installation site
The position of the corresponding arch wall heavy type steelframe of inverted arch camber line, marks the quantity and the quantity phase of arch wall heavy type steelframe of inverted arch camber line
Together, after having marked multiple inverted arch camber lines, inverted arch installation site, In are determined according to the size of inverted arch camber line and heavy inverted arch steelframe
In practice of construction, the quantity of usual inverted arch installation site is identical as the quantity of arch wall heavy type steelframe, the quantity of arch wall heavy type steelframe
It is determined by construction site Surrounding Rock Strength, if construction site Surrounding Rock Strength is weaker, the arch wall heavy type steelframe in designated length
Quantity is more, and the spacing between arch wall heavy type steelframe is smaller, and corresponding inverted arch installation site quantity is more, i.e., heavy inverted arch steelframe
Quantity also can be corresponding more；If construction site Surrounding Rock Strength is stronger, the quantity of arch wall heavy type steelframe in designated length
Less, the quantity of corresponding inverted arch installation site negligible amounts, i.e., heavy inverted arch steelframe also can be reduced accordingly, heavy inverted arch steelframe
Lay it is relatively sparse, not only can Enhanced support intensity again not will cause support material waste.
In order to enhance the subsequent inverted arch portion for being cast in tunnel deformation segment concrete anti-crack ability, it is specifically, described to apply
Work method further include: after step S2) and before step S3), it is laid with steel mesh in the inverted arch portion of the circulation construction section,
And the heavy inverted arch steelframe is fixed with the steel mesh near the heavy type inverted arch steelframe.
After the completion of heavy inverted arch steelframe is set up, guarantee the steady of country rock around inverted arch portion to fix each heavy inverted arch steelframe
It is fixed, specifically, the construction method further include: after step S3), to the circulation construction section in inverted arch portion spray again second to
Determine the concrete of thickness and performs inverted arch anchor pole in the circulation construction section after the concrete of multiple spray reaches given set strength.Phase
It by dowel and connects steelframe between the heavy inverted arch steelframes of adjacent two and is fixedly connected, by every two adjacent heavy type inverted arch
After the completion of steelframe connection, pneumatically placed concrete is answered to inverted arch portion, answers the second given thickness of pneumatically placed concrete between 23cm-25cm, so that
Multiple groups heavy type inverted arch steelframe is covered by concrete and is fixed, and the inverted arch supporting construction of existing intensity and flexible is formed, in multiple spray
Concrete, which reaches, performs inverted arch anchor pole in inverted arch portion after given set strength, to stablize the country rock around inverted arch portion.
In one embodiment, heavy inverted arch steelframe is made of multistage HW200 fashioned iron, and multistage fashioned iron is assembled into and is faced upward
The heavy inverted arch steelframe that arch shape is agreed with is hung using single track purlin and assembled heavy inverted arch steelframe is hoisted to specified inverted arch peace
Holding position.
For the inverted arch supporting intensity of strengthening subsequent, specifically, the inverted arch anchor pole that performs includes: to construct along the circulation
The longitudinal of section marks multiple inverted arch construction lines and on each inverted arch construction line according to given according to given longitudinal pitch
Lateral loops spacing determines multiple construction coordinate points；The bolthole of given depth is drilled out on each construction coordinate point；To every
Long anchor pole is placed in one bolthole, and by each long anchor pole slip casting into bolthole, until reaching predetermined note
Slurry amount stops slip casting.
Specifically, the longitudinal pitch and the lateral loops spacing are between 1.0m-1.3m.
In one embodiment, bolthole is drilled out using TY400 hidden hole drilling, in inverted arch portion boring apertureDrilling
Length 12m, longitudinal pitch are set as 1.2m, and lateral loops spacing is set as 1.2m, and long anchor pole is placed into each bolthole, is passed through
The long anchor pole injects cement list slurries into country rock, and after grouting amount reaches predetermined grouting amount, slip casting stops, and performs long anchor pole,
By long bolt grouting to consolidate country rock around inverted arch portion.
The present invention provide a kind of tunnel deformation segment again supporting when heavy type inverted arch steelframe construction method, which exists
It is executed after the completion of arch wall supporting, the inverted arch portion of tunnel deformation segment is divided into multiple circulation construction sections using when the construction method,
It constructs in each circulation construction section, in order to ensure the supporting intensity of each circulation construction section, is applied in each circulation one by one
The quantity of the quantity of the heavy inverted arch steelframe performed in workshop section arch wall heavy type steelframe corresponding with the circulation construction section is identical, is pacifying
When filling heavy inverted arch steelframe, first go out inverted arch installation site in a circulation construction section internal labeling, then the heavy type that assembly is completed is faced upward
Arch steelframe is hoisted to specified inverted arch installed position, is hoisted to inverted arch installation site using by assembled heavy inverted arch steelframe
Method, when saving transport required when handling one by one forms inverted arch steelframe section in heavy inverted arch steelframe to inverted arch installation site
Between, improve the construction efficiency of heavy inverted arch steelframe, will be hoisted to later the heavy inverted arch steelframe of inverted arch installed position with it is right
The arch wall heavy type steelframe connection closing cyclization answered, connection heavy inverted arch steelframe per adjacent two reinforce the integer support in tunnel
Intensity.
Tunnel deformation segment provided by the invention again supporting when heavy type inverted arch steelframe construction method, by assembly complete weight
Type inverted arch steelframe is hoisted to the installation of inverted arch installed position, saves the inverted arch steelframe section that transport one by one forms heavy inverted arch steelframe
Shipping time, improve the construction efficiency of heavy inverted arch steelframe.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (6)
1. a kind of tunnel deformation segment again supporting when heavy type inverted arch steelframe construction method, the construction method is in tunnel deformation segment
Execute after the completion of the arch wall supporting of supporting section, agree with the arch wall during the arch wall supporting and arch wall heavy-duty steel be installed
Frame, which is characterized in that the construction method the following steps are included:
S0) in the concrete of the first given thickness of spray at the beginning of the inverted arch portion of tunnel deformation segment；
S1 the inverted arch portion of tunnel deformation segment) is divided into multiple circulation construction sections, and in each circulation construction section internal labeling
Multiple inverted arch installation sites out are set wherein each inverted arch installation site is corresponding with the position for being equipped with the arch wall heavy type steelframe
It sets；
S2) assembled heavy inverted arch steelframe, and the heavy inverted arch steelframe after assembly is hoisted in specified inverted arch installation site, make
The heavy inverted arch steelframe that must be mounted in the inverted arch installation site closes cyclization with corresponding arch wall heavy type steelframe；
S3 multiple inverted arch connectors) are performed between the heavy inverted arch steelframe after two adjacent assembly, it is described adjacent to connect
Two assembly after heavy inverted arch steelframe.
2. construction method according to claim 1, which is characterized in that step S1) in each circulation construction section internal standard
Remember multiple inverted arch installation sites out, is set wherein each inverted arch installation site is corresponding with the position for being equipped with the arch wall heavy type steelframe
It sets, comprising:
It is corresponding with the circulation construction section in the inverted arch portion label of the circulation construction section along the longitudinal to supporting section of tunnel deformation segment
The identical multiple inverted arch camber lines of arch wall heavy type steelframe quantity so that each inverted arch camber line and the arch wall of label are heavy
The position of steelframe is correspondingly arranged；
The multiple inverted arch installation site is determined based on multiple inverted arch camber lines.
3. construction method according to claim 1, which is characterized in that the construction method further include: after step S2)
And before step S3), be laid with steel mesh in the inverted arch portion of the circulation construction section, and by the heavy inverted arch steelframe near
The steel mesh of the nearly heavy type inverted arch steelframe is fixed.
4. construction method according to claim 1, which is characterized in that the construction method further include: step S3) it
Afterwards, it sprays the concrete of the second given thickness again to the circulation construction section in inverted arch portion, and reaches given in the concrete of multiple spray
Inverted arch anchor pole is performed in the circulation construction section after set strength.
5. construction method according to claim 4, which is characterized in that the inverted arch anchor pole that performs includes:
Along the longitudinal according to the multiple inverted arch construction lines of given longitudinal pitch label and in each inverted arch of the circulation construction section
Multiple construction coordinate points are determined according to given lateral loops spacing on construction line；
The bolthole of given depth is drilled out on each construction coordinate point；
Long anchor pole is placed into bolthole described in each, and passes through each long anchor pole slip casting into bolthole, Zhi Daoda
To predetermined grouting amount, stop slip casting.
6. construction method according to claim 5, which is characterized in that the longitudinal pitch and the lateral loops spacing are situated between
In 1.0m-1.3m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910719995.XA CN110410101A (en) | 2019-08-06 | 2019-08-06 | Tunnel deformation segment again supporting when heavy type inverted arch steelframe construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910719995.XA CN110410101A (en) | 2019-08-06 | 2019-08-06 | Tunnel deformation segment again supporting when heavy type inverted arch steelframe construction method |
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| CN107387117A (en) * | 2017-07-07 | 2017-11-24 | 中国铁道科学研究院铁道建筑研究所 | A kind of prefabricated assembled tunnel structure in tunnel bottom and its construction method |
| CN107387119A (en) * | 2017-07-07 | 2017-11-24 | 中国铁道科学研究院铁道建筑研究所 | Prefabricated assembled tunnel inverted arch, tunnel structure and its construction method |
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2019
- 2019-08-06 CN CN201910719995.XA patent/CN110410101A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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