CN109538242A - Building method of tunnel construction formwork support - Google Patents
Building method of tunnel construction formwork support Download PDFInfo
- Publication number
- CN109538242A CN109538242A CN201811237778.9A CN201811237778A CN109538242A CN 109538242 A CN109538242 A CN 109538242A CN 201811237778 A CN201811237778 A CN 201811237778A CN 109538242 A CN109538242 A CN 109538242A
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- China
- Prior art keywords
- template
- steel pipe
- jacking
- tunnel
- cross bar
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Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000010276 construction Methods 0.000 title abstract description 3
- 238000009415 formwork Methods 0.000 title abstract 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 65
- 239000010959 steel Substances 0.000 claims abstract description 65
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 32
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 22
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 6
- 230000001154 acute effect Effects 0.000 claims description 5
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000009416 shuttering Methods 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
- 230000009466 transformation 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
- E21D11/04—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
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to a method for building a formwork support, in particular to a method for building a tunnel construction formwork support, which has the technical scheme that the method comprises the following steps: a: prefabricating a steel pipe for supporting a tunnel top formwork; b: a vertical rod base is arranged on the ground foundation in the tunnel; c: connecting the upright of the bracket with a base, inserting a base screw rod into the lower end of the upright, providing supporting force for the upright by a base bearing ring, and then erecting a cross rod; d: sequentially upwards erecting supports; e: arranging a top support at the upper end of the topmost upright rod, and connecting the top support and the upright rod to ensure that the top plate is away from the template at the top of the tunnel by a certain distance; f: the steel pipe is installed, the steel pipe is preliminarily fixed on the template, then the jacking ring is lifted to enable the steel pipe to be clamped between the top plate and the template, and then the jacking ring is rotated downwards to be abutted against the upright rod.
Description
Technical field
The present invention relates to a kind of building methods of falsework, more specifically, it relates to a kind of constructing tunnel template branch
The building method of frame.
Background technique
In the work progress in tunnel, the wall to form tunnel two sides is first poured, then by taking at the top of tunnel top
If framework of steel reinforcement, template is then set up, and injects concrete into template to form tunnel dome-shaped top surface.
In the prior art, double flute steel can be arranged in cantilever tip, and channel steel is supported by bracket and as keel and template
Lower end offset, the setting direction of keel and the setting direction in tunnel are identical.In order to adapt to the top of tunnel arch, template is same
For arc.After injecting concrete into template, template stress can deformation occurs.Because the setting direction of keel and tunnel are arranged
Direction is identical, and template itself has radian, therefore the easy stress in both ends that template is parallel with keel to adapt to tunnel top also
Bending causes to destroy.Therefore it must be used to carry template at the template both ends parallel with keel and middle part setting keel, lead
The more process of setting up of bracket is caused to be more troublesome.
Summary of the invention
In view of the deficienciess of the prior art, the invention reside in a kind of building method of constructing tunnel falsework is provided,
It is advantageous that bracket can be set up faster, and bracket is more preferable to the supportive of template.
Technical purpose of the invention has the technical scheme that a kind of taking for constructing tunnel falsework
Construction method includes the following steps:
A: steel pipe is bent into and tunnel top template arc having the same by the prefabricated steel pipe for being used to support tunnel top template
Degree；
B: disposing upright bar pedestal in the ground base in tunnel, the pedestal includes bottom plate and the pedestal silk fixed with bottom plate
Bar is threaded with pedestal load-carrying ring on the pedestal screw rod；
C: the upright bar of bracket is connect with pedestal, so that pedestal screw rod is inserted into upright bar lower end, and allows the pedestal load-carrying ring to be
Upright bar provides support force, then sets up cross bar；
D: bracket is set up upwards in turn；
E: jacking is set in the upright bar upper end of the top, jacking includes jacking lead screw, and jacking screw rod includes jacking load-carrying ring, described
The other end of jacking screw rod is fixed with top plate, and two on top plate couple two sides are provided with flange, allows top after jacking is connect with upright bar
Template certain distance of the plate apart from tunnel top；
F: then steel pipe being fixed in template tentatively is lifted jacking by steel pipe and is clamped in top plate and template by installation steel pipe
Between, then jacking load-carrying ring is rotated down and is offseted with upright bar.
By using above-mentioned technical proposal, it is used to carry as keel by steel pipe after bending, support shuttering, because of steel pipe
With radian identical with template, therefore steel pipe can be closely bonded with template, so that the weight of template can be more
Average is dispersed on steel pipe.Become to be vertically arranged with tunnel direction of travel after steel pipe bending, therefore template and tunnel traveling side
Support to parallel both ends by steel pipe is not easy deformation.And template is domed along the both ends of tunnel direction of travel, has preferable
Structural strength, there is no need to template along tunnel direction of travel both ends be arranged steel pipe support template.Steel pipe only needs to be arranged
It is arranged in template along tunnel direction of travel trisection posistion, both one piece of template only needed two steel pipe supports.Compared with the prior art
The steel pipe quantity for being used to support template can be reduced, so that bracket can be built faster.
The present invention is further arranged to: the bracket is built using disk buckle type scaffold, the cross of disk buckle type scaffold
Bar has connector, and crossbar joint is inserted into inserting in the hole on upright bar disk, cross bar position is adjusted, is in first layer cross bar bar
On same plane, it then under the pin buckle on cross bar and will strike tight, after the completion of first layer cross bar is set up, adjusted, made by pedestal
Cross bar is in same level, is then carried out next layer again and is set up.
By using above-mentioned technical proposal, the horizontal position of cross bar is adjusted by adjustable frames, so that strutting system
Bottom end has stronger stability, so that strutting system has better stability and structural strength.
The present invention is further arranged to: during setting up upright bar, synchronous installation brace, or finally in pouring concrete
Before put up brace, described brace one end is fixed with cross bar, and the other end is fixed with upright bar.
By using above-mentioned technical proposal, brace is set in strutting system, one end of brace is allowed to fix with upright bar,
The other end is fixed with cross bar, to further enhance the stability and structural strength of strutting system.
The present invention is further arranged to: in the bracket build process, on the horizontal plane between that is spaced from bottom to up
Horizontal cross brace is set.
By using above-mentioned technical proposal, the support machine of cross-like is namely arranged in horizontal cross brace on horizontal position
The rod piece of structure, bridging is fixed by the either upright bar of the cross bar of fastener and bracket, bracket can be allowed to be not susceptible to deformation.
The present invention is further arranged to: steel pipe is preliminary fixed by fixing iron wire, iron in advance in template surface in step f
Silk is pierced by out of template and winds to be fixed in template, realizes that steel pipe is tentatively fixed on template using iron wire binding steel pipe
On.
By using above-mentioned technical proposal, steel pipe is pricked using iron wire plate, is fixed in template, is convenient for so that steel pipe is preliminary
Later-stage utilization bracket is connected to be supported steel pipe with steel pipe.
The present invention is further arranged to: the both ends and middle part of steel pipe are supported by jacking.
By using above-mentioned technical proposal, the both ends and middle part of steel pipe are supported by jacking, and steel pipe is allowed to transmit template
And the weight of the concrete of filling in a template, 3 points of steel pipe support with jacking, therefore can more uniformly pass weight
Pass bracket.
The present invention is further arranged to: the opposite one end of adjacent steel pipe is clamped in and template by the top plate of same secondary jacking
Between.
By using above-mentioned technical proposal, steel pipe is limited between the flange at top plate both ends, so that adjacent steel pipe
Between have linking, allow steel pipe can with template contacts with by model hard loading transmitting and strutting system.
The present invention is further arranged to: having acute angle folder between the top plate and jacking screw rod of the jacking of tunnel two sides
Angle.
By using above-mentioned technical proposal, the acute angle between top plate and jacking screw rod adapts to the transformation of template radian, makes
Jacking screw rod still keeps vertical and top plate can be by steel pipe clamping between template and top plate.
The present invention is further arranged to: often building levelness and upright bar that two layers of cross bar then utilizes total station to check cross bar
Verticality.
By using above-mentioned technical proposal, in the levelness and upright bar of the build process regular check cross bar of strutting system
Verticality reduces the safety accident problem occurred during the holistic conformation of bracket.
In conclusion the invention has the following advantages:
1, one piece of template becomes two present curved steel pipe supports, so that bracket is taken by three original spine supports
It is more faster to build process；
2, in the levelness of the build process regular check cross bar of strutting system and the verticality of upright bar, the entirety in bracket is reduced
The safety accident problem occurred in build process.
Detailed description of the invention
Fig. 1 is strutting system partial structural diagram of the invention；
Fig. 2 is the enlarged structure schematic diagram in Fig. 1 of the invention at A；
Fig. 3 is the enlarged structure schematic diagram in Fig. 1 of the invention at B.
Appended drawing reference: 1, template；2, steel pipe；3, upright bar；4, pedestal；5, bottom plate；6, pedestal screw rod；7, pedestal load-carrying ring；
8, bracket；9, cross bar；10, connector；11, disk；12, brace；13, horizontal cross brace；14, jacking；15, jacking lead screw；16,
Jacking load-carrying ring；17, top plate；18, iron wire.
Specific embodiment
Referring to attached drawing, the present invention will be further described.
Present embodiment discloses a kind of building methods of constructing tunnel falsework, as shown in Figure 1, 2, including walk as follows
It is rapid:
A: steel pipe 2 is bent into having the same with tunnel top template 1 by the prefabricated steel pipe 2 for being used to support tunnel top template 1
Radian；
B: in the ground base in tunnel in the form of equidistant array dispose upright bar 3 pedestal 4, pedestal 4 include bottom plate 5 and
The fixed pedestal screw rod 6 with bottom plate 5 is threaded with pedestal load-carrying ring 7 on pedestal screw rod 6；
C: the upright bar 3 of bracket 8 is connect with pedestal 4, so that pedestal screw rod 6 is inserted into 3 lower end of upright bar of tubulose, and allows bottom
Seat load-carrying ring 7 is that upright bar 3 provides support force, then sets up cross bar 9；
Bracket 8 is built using disk buckle type scaffold, and the cross bar 9 of disk buckle type scaffold has connector 10, by 9 connector 10 of cross bar
It is inserted into inserting in the hole on the disk 11 of upright bar 3, and then cross bar 9 and upright bar 3 are linked together.Then 9 position of cross bar is adjusted,
It is in the same plane 9 bar of first layer cross bar, then under the pin buckle on cross bar 9 and will strike tight, set up in first layer cross bar 9
Cheng Hou is adjusted by pedestal 4, is in cross bar 9 in same level, is then carried out next layer again and is set up；
D: bracket 8 is set up upwards in turn；
During setting up upright bar 3, synchronous installation brace 12, or brace 12, oblique pull are finally put up before pouring concrete
12 one end of bar and cross bar 9 are fixed, and the other end and upright bar 3 are fixed；The setting of brace 12 enhances the stability of 8 system of bracket
And structural strength；
In addition, in 8 build process of bracket, horizontal cross brace 13, scissors are set on the horizontal plane between that is spaced from bottom to up
The rod piece of support passes through fastener and the either upright bar 3 of cross bar 9 of bracket 8 is fixed, to form level on the horizontal plane of bracket 8
Reinforcing mechanisms, horizontal cross brace 13 can allow bracket 8 to be not susceptible to deformation；
Also, it often builds two layers of cross bar 9 and then checks the levelness of cross bar 9 and the verticality of upright bar 3 using total station, to be spaced
8 architecture of bracket is adjusted, the safety accident problem occurred during the holistic conformation of bracket 8 is reduced；
E: as shown in Figure 1,3,
Jacking 14 is set in 3 upper end of upright bar of the top, jacking 14 includes jacking lead screw 15, and jacking screw rod 15 is carried including jacking
Ring 16, the other end of jacking screw rod 15 are fixed with top plate 17, and two pairs of two sides on top plate 17 are provided with flange, and flange is for limiting
Steel pipe 2, allows template 1 certain distance of the top plate 17 apart from tunnel top after jacking 14 is connect with upright bar 3；
F: installation steel pipe 2, it is preliminary fixed by fixing iron in advance on 1 surface of template by being fixed in template 1 tentatively of steel pipe 2
Silk 18, iron wire 18 are pierced by and are wound out of template 1 to be fixed in template 1, bound steel pipe 2 using iron wire 18 and realize steel pipe 2
Tentatively it is fixed in template 1；
After preliminary fixed steel pipe 2, lifting jacking 14 allows steel pipe 2 to be clamped between top plate 17 and template 1, and steel pipe 2 is located at
Between the flange at 17 both ends of top plate, then jacking load-carrying ring 16 is rotated down and is offseted with upright bar 3, enables jacking load-carrying ring 16
Template 1 is enough carried, and every piece of template 1 can be supported by two steel pipes 2；
As shown in Figure 1,3, in 8 system of bracket, the both ends and middle part of steel pipe 2 are supported by jacking 14, and adjacent
The opposite one end of steel pipe 2 is clamped between template 1 by the top plate 17 of same secondary jacking 14, therefore template 1 and is filled in mould
Coagulation in plate 1 more can uniformly deliver load to bracket 8.
In addition, in order to which jacking 14 can preferably supporting steel pipe 2, the acute angle between top plate 17 and jacking screw rod 15 be suitable
1 radian of template is answered to convert, the acute angle between the top plate 17 and jacking screw rod 15 of tunnel two sides is smaller, so that
Jacking screw rod 15 still keeps vertical, and steel pipe 2 can be clamped between template 1 and top plate 17 by top plate 17.
Assigned direction in this specific embodiment is intended merely to facilitate between each component of statement positional relationship and mutually
The relationship of cooperation.The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned
Embodiment, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for this technology
For the those of ordinary skill in field, several improvements and modifications without departing from the principles of the present invention, these are improved and profit
Decorations also should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of building method of constructing tunnel falsework, it is characterized in that: including the following steps:
A: steel pipe (2) is bent into and has with tunnel top template (1) by the prefabricated steel pipe (2) for being used to support tunnel top template (1)
There is identical radian；
B: upright bar (3) pedestal (4) is disposed in the ground base in tunnel, the pedestal (4) includes bottom plate (5) and and bottom plate
(5) fixed pedestal screw rod (6) is threaded with pedestal load-carrying ring (7) on the pedestal screw rod (6)；
C: the upright bar (3) of bracket (8) is connect with pedestal (4), so that pedestal screw rod (6) is inserted into upright bar (3) lower end, and
It allows pedestal load-carrying ring (7) to be that upright bar (3) provide support force, then sets up cross bar (9)；
D: bracket (8) are set up upwards in turn；
E: jacking (14) are set in upright bar (3) upper end of the top, jacking (14) includes jacking lead screw (15), jacking screw rod (15)
Including jacking load-carrying ring (16), the other end of the jacking screw rod (15) is fixed with top plate (17), two pair two on top plate (17)
Side is provided with flange, allows template (1) one spacing of the top plate (17) apart from tunnel top after jacking (14) is connect with upright bar (3)
From；
F: installation steel pipe (2) is fixed on steel pipe (2) is preliminary on template (1), is then lifted jacking (14) and is allowed steel pipe (2) quilt
It is clamped between top plate (17) and template (1), then jacking load-carrying ring (16) is rotated down and is offseted with upright bar (3).
2. the building method of a kind of constructing tunnel falsework according to claim 1, it is characterized in that: the bracket (8)
It is built using disk buckle type scaffold, the cross bar (9) of disk buckle type scaffold has connector (10), by the connector of cross bar (9)
(10) it is inserted into inserting in the hole on upright bar (3) disk (11), cross bar (9) position is adjusted, is in first layer cross bar (9) bar same
In plane, it then under the pin buckle on cross bar (9) and will strike tight, after the completion of first layer cross bar (9) is set up, pass through pedestal (4) and adjust
Section, is in cross bar (9) in same level, then carries out next layer again and set up.
3. the building method of a kind of constructing tunnel falsework according to claim 2, it is characterized in that: setting up upright bar
(3) during, synchronous installation brace (12), or brace (12), the brace are finally put up before pouring concrete
(12) one end and cross bar (9) are fixed, and the other end and upright bar (3) are fixed.
4. the building method of a kind of constructing tunnel falsework according to claim 3, it is characterized in that: the bracket (8)
In build process, horizontal cross brace (13) are set on the horizontal plane between that is spaced from bottom to up.
5. the building method of a kind of constructing tunnel falsework according to claim 1, it is characterized in that: steel pipe in step f
(2) by fixing iron wire (18) in advance on template (1) surface, iron wire (18) is pierced by and twines out of template (1) for preliminary fixation
Around to be fixed on template (1), realize that steel pipe (2) are tentatively fixed on template (1) using iron wire (18) binding steel pipe (2).
6. the building method of a kind of constructing tunnel falsework according to claim 5, it is characterized in that: the two of steel pipe (2)
End and middle part are supported by jacking (14).
7. the building method of a kind of constructing tunnel falsework according to claim 4, it is characterized in that: adjacent steel pipe
(2) opposite one end is clamped between template (1) by the top plate (17) of same secondary jacking (14).
8. the building method of a kind of constructing tunnel falsework according to claim 5, it is characterized in that: close to tunnel two sides
Jacking (14) top plate (17) and jacking screw rod (15) between have acute angle.
9. the building method of a kind of constructing tunnel falsework according to claim 1, it is characterized in that: often building two layers of cross
Bar (9) then checks the levelness of cross bar (9) and the verticality of upright bar (3) using total station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811237778.9A CN109538242B (en) | 2018-10-23 | 2018-10-23 | Building method of tunnel construction formwork support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811237778.9A CN109538242B (en) | 2018-10-23 | 2018-10-23 | Building method of tunnel construction formwork support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109538242A true CN109538242A (en) | 2019-03-29 |
| CN109538242B CN109538242B (en) | 2020-09-29 |
Family
ID=65845027
Family Applications (1)
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|---|---|---|---|
| CN201811237778.9A Active CN109538242B (en) | 2018-10-23 | 2018-10-23 | Building method of tunnel construction formwork support |
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| CN110130477A (en) * | 2019-04-16 | 2019-08-16 | 上海福铁龙住宅工业发展有限公司 | A kind of housing construction method |
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| CN110645022A (en) * | 2019-10-29 | 2020-01-03 | 中建八局轨道交通建设有限公司 | Self-anchored formwork support system for connecting channel and construction method |
| CN111878108A (en) * | 2020-08-07 | 2020-11-03 | 云南大力神金属构件有限公司 | Assembled support system for tunnel maintenance |
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| CN108468556A (en) * | 2018-05-29 | 2018-08-31 | 中铁十四局集团第二工程有限公司 | A kind of variable section is by multiple formwork-support |
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| CN111878108A (en) * | 2020-08-07 | 2020-11-03 | 云南大力神金属构件有限公司 | Assembled support system for tunnel maintenance |
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| CN113605685A (en) * | 2021-08-05 | 2021-11-05 | 中国二十二冶集团有限公司 | Construction method of flue top plate arch structure supporting system |
| CN115075583A (en) * | 2022-06-21 | 2022-09-20 | 五冶集团上海有限公司 | Forklift-loadable unloading platform support frame system |
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