CN110159277A - A kind of subway starting well is non-to anchor into formula construction method from wall side wall - Google Patents
A kind of subway starting well is non-to anchor into formula construction method from wall side wall Download PDFInfo
- Publication number
- CN110159277A CN110159277A CN201910410489.2A CN201910410489A CN110159277A CN 110159277 A CN110159277 A CN 110159277A CN 201910410489 A CN201910410489 A CN 201910410489A CN 110159277 A CN110159277 A CN 110159277A
- Authority
- CN
- China
- Prior art keywords
- side wall
- wall
- pull rod
- template
- stupefied
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—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 DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering
Abstract
It is non-from wall side wall template system technical field of construction that the invention belongs to subway stations, discloses that a kind of subway starting well is non-to anchor into formula construction method from wall side wall, includes the following steps: side wall template, main stupefied, pull rod and extension device production；Subjective basis structure base slab and the construction of short abutment wall, and in lower part pre-buried on short abutment wall pull rod；Upper drilling is gone along with sb. to guard him in diaphram wall and is implanted into reinforcing bar in hole；Top pull rod is installed on the reinforcing bar of implantation；Installation side wall reinforcing bar is simultaneously checked and accepted, with extension device spreading lower part pull rod and by side wall template and it is main it is stupefied install, fasten lower part pull rod；With extension device spreading top pull rod and to upper side wall form and it is main it is stupefied fasten, complete the entire non-supporting from wall side wall；Side wall is poured and is checked and accepted, the present invention is by pre-buried, tendon-planted craft, and using Two bors d's oeuveres I-steel as shoulder pole girder, realization anchors into formula support system and balances concreting load instead of conventional steel support system, and enhancing structure reliability reduces security risk.
Description
Technical field
It is originated from wall side wall template system technical field of construction more particularly to a kind of subway the invention belongs to subway station is non-
Well is non-to anchor into formula construction method from wall side wall.
Background technique
As urban population is continuously increased, urban ground traffic pressure gradually perplexs urban development, therefore many large and medium-sized
City starts subway construction successively, and subway station is divided into bellend and standard paragraphs two large divisions, for originating for station, expands
End is also known as starting well, and starting well is influenced by shield machine size, and side wall clear height generally reaches 7.6m, so starting well side wall is constructed
Difficulty is high, and the construction speed of starting well is related to shield and goes into the well the node duration, so optimization starting well side wall construction technology
Seem and is even more important, in such cases, construction method, which is commonly, relies on full framing to carry out strut to top by setting level,
It is influenced by supporting element design spacing 600mm × 600mm, practice of construction process plate face disk buckles rack rod step pitch need to be according to support
The horizontal space of part is adjusted, it is necessary to conventional 1200mm × 1200mm plate face bracket is adjusted to 600mm × 600mm spacing,
According to loading characteristic, symmetrical rod piece needs elongated arrangement with offset by the level of load, this technique not only needs a large amount of steel pipe and fastener,
And the material investment that disk buckles bracket is increased, it sets up and projects amount is huge, steel pipe support arranges close and numerous, operating space
Minimum, effect is extremely low, and frame body construction is caused to spend the artificial and material rent cost of great number, and long construction period, serious to restrict
Construction speed is unable to satisfy the node construction period of station shield launching；Meanwhile end well headwall belongs to unilateral blastproof partition wall, mould
Plate support, which fully relies on the stability of frame body itself and reinforces diagonal brace steel pipe, carries out load transmitting, and no image of Buddha two sides side wall is equally real
Now to support, security reliability is insufficient.
Summary of the invention
Formula construction method is anchored into from wall side wall the object of the present invention is to provide a kind of subway starting well is non-, can replace tradition
Steel pipe supporting system balances concreting load, and side wall template is made to construct independently of strutting system, and bracket is able to minimizing cloth
It sets, i.e. enhancing structure security reliability, and improves construction effect, save a large amount of construction cost.
In order to achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of subway starting well is non-to anchor into formula construction method from wall side wall, includes the following steps:
1) side wall template, main stupefied, pull rod and extension device production；
2) subjective basis structure and the short abutment wall construction of bottom plate, and in lower part pre-buried on short abutment wall pull rod；
3) upper drilling is gone along with sb. to guard him in diaphram wall and be implanted into reinforcing bar in hole, as top pull rod；
4) install and side wall reinforcing bar and check and accept, with extension device spreading lower part pull rod and by side wall template and it is main it is stupefied install, fasten
Lower part pull rod；
5) with extension device spreading top pull rod and to upper side wall form and it is main it is stupefied fasten, complete entire non-from wall side wall
Supporting；
6) side wall is poured and is checked and accepted.
Further, extension device is connection sleeve in the step 1), and the screw rod in connection sleeve is set to screw rod end
The nut and gasket in portion, side wall template include light-duty assembled panel, and the light-duty assembled panel is welded by steel plate, cross rib, perpendicular rib
It connects, cross rib and perpendicular rib is welded in the combined steel formwork for being processed into monolithic 2.4m*4.8m on steel plate, are all made of between template
It is bolted, two lifting lugs is set in every piece of template；Master is stupefied to be welded using Two bors d's oeuveres I-steel group, and lifting lug is arranged in vertical top,
Notch is arranged in bottom.
Further, the pre-buried pull rod of the step 2 is not less than the fining twisted steel of 650KN using tensile value, and lower mouth is pre-
It is embedded in short abutment wall and exposed 10cm.
Further, bore diameter is not less than the diameter for being implanted into reinforcing bar in the step 3), after top pull rod is installed
Pull-out test is carried out, pull-out test specially extracts quantity and calculates by 0.1% that every batch of anchors into pull rod total quantity, and no less than 5
Root, pull strength are not less than 176KN.
Present invention has the advantage that
1. method of the present invention not only solves the End Shaft at Underground Metro Station side wall technological difficulties mixed with middle board mount,
Changed simultaneously the construction method of side wall and middle plate one-piece casting in traditional end well construction, have construction efficiency height, short time limit,
Minimize starting well non-the advantages that being easy to guarantee, construction investment economical rationality from wall side wall falsework system risk, quality；
2, by using formula construction is anchored into, the strutting system of end well is greatly optimized, disk is reduced and buckles bracket and to support steel
The investment of pipe, while the expenses of labour that support frame system is set up is saved, construction cost is greatly saved；
3, the separation that formula support system realizes side wall template system and plate face support frame is anchored into, is constructed independently of frame body, saving should
The waiting time of section；Disk buckles bracket and is able to minimizing arrangement simultaneously, and no setting is required to strut for support frame, saves close and numerous steel
Tube clamps construction, saves the construction period；
4, the side pressure dynamic balance of main structure casting process relies on short abutment wall embedded ribs and wall building enclosure bar planting suitable for reading, by original
It supports compression equilibrium system to be changed into freely-supported tension system, solves headwall and asked by the construction technology of disk buckle frame body stress
Topic, while the risk of former design scheme scaffolder operation in support frame small space is avoided, improve the security performance of construction；
5, formula support system is anchored into, side wall uses combined steel, and it is main stupefied using Two bors d's oeuveres I-steel, in formwork reinforcement, only it is arranged
Upper and lower twice pull rod, the work progress lifting operation stupefied using tower crane or truck crane progress punching block and fashioned iron master are auxiliary in a few peoples
Work carries out upper and lower pull rod and reinforces；
6, the combined steel and i-steel component for anchoring into formula support system may be used on from wall type side wall match plate, dowel suitable for reading
It is directly substituted using elongated fining twisted steel, therefore its is versatile, turnover rate is high.
Detailed description of the invention
Fig. 1 is that subway starting well of the present invention is non-from wall side wall pull rod design structure figure；
Fig. 2, which is that subway starting well of the present invention is non-, anchors into formula support system side view from wall side wall；
Fig. 3, which is that subway starting well of the present invention is non-, anchors into formula support system front view from wall side wall.
1, diaphram wall；2, pull rod；3, connector；4, short abutment wall；5, lower abutment wall；6, master is stupefied；7, cross rib；8, rib is erected；
9, panel；10, lifting lug.
Specific embodiment
A kind of subway starting well is non-to anchor into formula construction method from wall side wall, includes the following steps:
1) template fabrication design
Non- to use punching block slab supporting from wall type side wall, light-duty assembled panel 9 uses 5mm thick steel plate, and cross rib 7 selects 8# channel steel,
Away from 35cm, small perpendicular rib 8 uses 1.2cm thickness band steel, and band iron 35cm long, spacing 50cm, high 8cm are processed into monolithic 2.4m*4.8m group
Punching block is closed, stupefied 6 I-steel for using Two bors d's oeuveres 25a, spacing 80cm are vertically led, template is all made of straight cut and is bolted, large form
It is stupefied by master, it is reinforced using the fining twisted steel of upper and lower twice 25mm.
1, side wall use steel form, light-duty assembled panel use 5mm thick steel plate, cross rib select 8# channel steel, spacing 30cm,
Small perpendicular rib uses 1.2cm thickness band steel, and band iron 35cm long, spacing 50cm, high 8cm are processed into monolithic 2.4m*4.8m combined steel,
Template is all made of straight cut and is bolted, and the lifting lug 10 that two round steel are processed is arranged on every piece of panel 9, and the lifting convenient for template is made
Industry.
2, formwork reinforcement vertically leads the stupefied I-steel using Two bors d's oeuveres 25a, is welded by the junction steel plate group of 10mm thickness,
Lifting lug is arranged in vertical top, and the notch of 20cm is arranged in bottom, it is ensured that fashioned iron can be inserted freely into the pre-buried drawing in lower part by lifting
Bar, main stupefied spacing are arranged by 80cm；2 specification of pull rod is 25mm fining twisted steel, and backing plate uses specification for 18cm*18cm*2cm's
Steel plate.
2) the short abutment wall construction of main structure bottom plate, pre-buried lower part fining twisted steel tie rods
Pre-buried pull rod uses diameter for the fining twisted steel of 25cm, and tensile value is not less than 650KN.Wherein, lower mouth is embedded in short
Abutment wall 4, single long 70cm, exposed 10cm carry out lengthening connection by connector of finish rolling thread steel 3, not only realize exposed parts
Recycling, and be convenient for short 4 form removable of abutment wall.
1, the short abutment wall of 1200mm is arranged according to design scheme for bottom plate, after base plate steel bar binding, when template is installed, and skill
Art person is released the absolute altitude of pull rod using level, and the elevation line of pull rod is popped up by black mark-line, marks drawing using marking pen
Then the point of bar carries out taking hole, placement pull rod is in place, is welded by using the reinforcing bar of carbon-dioxide arc welding and side wall solid
It is fixed.
2, after formwork reinforcement, it is desirable that verticality to short sidewall template and line style carry out repetition measurement, because side wall using rigidity compared with
Big combined steel, short abutment wall is not straight, and there are gaps for template and short abutment wall when will lead to side wall construction, generates spillage, is formed
Voids and pits, after concreting, form removal, using the pre-buried pull rod of connector spreading.
3) bar planting installs top and anchors into formula pull rod
1, the determination of reinforcement location
According to the position for having surveyed measured plane axis and absolute altitude, determine construction part, with the line of ink marker pop up construction boundary, and
1 subscript of diaphram wall goes out specific bar planting position.
2, hammer drill pore-forming
After bar planting position determines, drilled with impact gun.Drilling construction, which must not operate, damages diaphram wall reinforcing bar, bore diameter
Not less than bar diameter d.Specific size specification is as follows:
| Bar diameter (mm) | 12 | 14 | 16 | 18 | 20 | 22 | 25 | 28 | 32 |
| Aperture (mm) | 15 | 18 | 20 | 22 | 25 | 28 | 31 | 35 | 40 |
Actual borehole aperture allows to have+2mm, -1mm deviation.
If reply bar planting position is finely adjusted when bar planting position is clashed with drilled pile reinforcing bar when drilling, to avoid damage
Hurt diaphram wall reinforcing bar, drilling depth calculates construction in strict accordance with design.
3, borehole cleaning
Drilling depth after the assay was approved, is first mentioned with the weakness in wire brush and banister brush cleaning hole, then use through supervising engineer
Pvc pipe, cooperation air compressor machine pipe blow off the floating ash in hole, using preceding attention tracheae hydrofuge, and clean hole repeatedly with acetone, go
Except impurity and organic matter, to guarantee bar planting intensity and quality.
4, anchoring adhesive is injected
Anchoring adhesive purchase prepares special glue by producer in proportion, can be used directly after reviewing qualification after marching into the arena.It is equipped with dedicated plant
Muscle glue syringe, passes through hose, it is ensured that anchoring adhesive is slowly squeezed out by the root that drills, and colloid is closely knit.
5, bar planting steel bar meter
Reinforcing bar is cut by the protruded length that design bar planting depth increases 10cm, bar types, model must be checked before cutting.Reinforcing bar
Cutting uses toothless saw, after cutting, abrades the floating rust of the reinforcing bar outer surface needed for bar planting in length with angle grinder, then with third
Ketone is cleaned reinforcing bar to remove the grease and dirt of reinforcing bar appearance, and is marked at implantation end.
6, the implantation of reinforcing bar
After bar planting steel bar meter, anchoring adhesive is injected into bar planting hole, anchoring adhesive injection rate is to drill the 2/3 of volume to be advisable,
And rebar surface is smeared with structure glue.Then reinforcing bar is gently sent into hole, is tapped with hand hammer, until hole in have colloid it is counter go out,
Reinforcing bar enters length not until variation.
7, it conserves
After reinforcing bar implantation, special messenger must not need to be sent to nurse by any disturbance, scene, until anchoring adhesive solidification.Anchoring adhesive
Curing time is related with temperature, referring to selected anchoring adhesive specification of constructing, maintenance to corresponding curing time.
8, intensity detection
After bar planting adhesive curing, pull-out test need to be carried out to the reinforcing bar planted and examine its intensity, intensity, which is met the requirements, to be carried out
Lower step process construction same specification, same to model, essentially identical position reinforcing bar form an inspection lot.It extracts quantity and presses every batch of anchor bolt
The 0.1% of total quantity calculates, and no less than 5.
Bar planting intensity checks in situ, it is ensured that pull strength meets claimed below:
25 reinforcing bar of Φ: 0.9 × π × 25 × 25 4 × 400=176kN of ÷
4) side wall is constructed
1, after the completion of underplate concrete pours, full framing is set up as side wall reinforcing bar and binds operating platform, carries out reinforcement installation.
2, using connector spreading lower part pull rod.
3, template polishing cleaning is carried out before template is installed, and sprays release agent, it, will by crane or tower crane after cleaning out
Template lifting, is shelved on pre-buried pull rod, and after being fixed temporarily using the framework of steel reinforcement of iron wire and binding number, installation master is stupefied
The notch of fashioned iron is directed at pull rod, is directly located above pull rod, installs gasket, fastening bolt by fashioned iron.
4, hand-held thousand is passed through by adjusting the elasticity of bolt suitable for reading using the pull rod of connector spreading bar planting suitable for reading
Jin top carries out template line style and degree control, and completion anchors into the reinforcing of formula support system, carries out concreting.
Method of the present invention by pre-buried, tendon-planted craft, using the Two bors d's oeuveres I-steel shoulder pole girder of model 25a as
Shoulder pole girder, realization anchor into formula support system and balance concreting load instead of conventional steel support system, and enhancing structure is reliable
Property, reduce security risk；Anchor into formula support system keeps end well non-from wall type side wall template using the pulling capacity of fining twisted steel
It constructs independently of strutting system, not only solves the constructing technology problem that headwall relies on disk buckle frame body stress, avoid former design
The risk of scheme scaffolder operation in support frame small space, and disk is enable to buckle bracket minimizing arrangement, no setting is required
To strut, close and numerous steel tube fastener construction is saved, construction efficiency is improved, saves construction period and cost, consider the letter of fashioned iron
Branch system deflection deformation need to reduce indirectly side wall one-time-concreting by way of abutment wall under the setting short abutment wall of bottom plate and middle plate
Highly, after the completion of side wall is constructed, abutment wall 5 and the construction of following part side wall under plate in progress.
Claims (4)
1. a kind of subway starting well is non-to anchor into formula construction method from wall side wall, which comprises the steps of:
1) side wall template, main stupefied, pull rod and extension device production；
2) subjective basis structure and the short abutment wall construction of bottom plate, and in lower part pre-buried on short abutment wall pull rod；
3) upper drilling is gone along with sb. to guard him in diaphram wall and be implanted into reinforcing bar in hole, as top pull rod；
4) install and side wall reinforcing bar and check and accept, with extension device spreading lower part pull rod and by side wall template and it is main it is stupefied install, fasten
Lower part pull rod；
5) with extension device spreading top pull rod and to upper side wall form and it is main it is stupefied fasten, complete entire non-from wall side wall
Supporting；
6) side wall is poured and is checked and accepted.
2. subway starting well as described in claim 1 is non-to anchor into formula construction method from wall side wall, it is characterised in that: the step
1) extension device is connection sleeve in, the screw rod in connection sleeve, nut and gasket set on screw rod end, side wall template packet
Light-duty assembled panel is included, the light-duty assembled panel is welded by steel plate, cross rib, perpendicular rib, cross rib and perpendicular rib are welded in
It is processed into the combined steel formwork of monolithic 2.4m*4.8m on steel plate, is all made of and is bolted between template, is arranged two in every piece of template
A lifting lug；Master is stupefied to be welded using Two bors d's oeuveres I-steel group, and lifting lug, bottom setting notch is arranged in vertical top.
3. subway starting well as claimed in claim 2 is non-to anchor into formula construction method from wall side wall, it is characterised in that: the step
2) pre-buried pull rod is not less than the fining twisted steel of 650KN using tensile value, and Qi Xiakou is embedded in short abutment wall and exposed 10cm.
4. subway starting well as claimed in claim 3 is non-to anchor into formula construction method from wall side wall, it is characterised in that: the step
3) for bore diameter not less than the diameter for being implanted into reinforcing bar, top pull rod will carry out pull-out test, pull-out test tool after being installed in
Body is to extract quantity to calculate by 0.1% that every batch of anchors into pull rod total quantity, and no less than 5, pull strength is not less than 176KN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910410489.2A CN110159277A (en) | 2019-05-16 | 2019-05-16 | A kind of subway starting well is non-to anchor into formula construction method from wall side wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910410489.2A CN110159277A (en) | 2019-05-16 | 2019-05-16 | A kind of subway starting well is non-to anchor into formula construction method from wall side wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110159277A true CN110159277A (en) | 2019-08-23 |
Family
ID=67631103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910410489.2A Pending CN110159277A (en) | 2019-05-16 | 2019-05-16 | A kind of subway starting well is non-to anchor into formula construction method from wall side wall |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102433987A (en) * | 2011-12-31 | 2012-05-02 | 江苏华伟佳建材科技有限公司 | Method for same-body pouring of thermal insulation stay-in-place mould |
| CN203394052U (en) * | 2013-08-13 | 2014-01-15 | 北京市市政四建设工程有限责任公司 | Side wall template support structure |
| CN204780994U (en) * | 2015-06-11 | 2015-11-18 | 中建一局集团第六建筑有限公司 | Underground continuous wall inwall construction structures |
| CN107524471A (en) * | 2017-10-18 | 2017-12-29 | 北京建工路桥工程建设有限责任公司 | A kind of tunnel end plugging construction method |
| CN206859263U (en) * | 2017-07-07 | 2018-01-09 | 中交一公局厦门工程有限公司 | A kind of large formwork construction device of subway station side wall |
-
2019
- 2019-05-16 CN CN201910410489.2A patent/CN110159277A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102433987A (en) * | 2011-12-31 | 2012-05-02 | 江苏华伟佳建材科技有限公司 | Method for same-body pouring of thermal insulation stay-in-place mould |
| CN203394052U (en) * | 2013-08-13 | 2014-01-15 | 北京市市政四建设工程有限责任公司 | Side wall template support structure |
| CN204780994U (en) * | 2015-06-11 | 2015-11-18 | 中建一局集团第六建筑有限公司 | Underground continuous wall inwall construction structures |
| CN206859263U (en) * | 2017-07-07 | 2018-01-09 | 中交一公局厦门工程有限公司 | A kind of large formwork construction device of subway station side wall |
| CN107524471A (en) * | 2017-10-18 | 2017-12-29 | 北京建工路桥工程建设有限责任公司 | A kind of tunnel end plugging construction method |
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Application publication date: 20190823 |
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