CN105507370A - Shaft well tubular pump flow channel concrete special-shaped steel mould one-stage molding construction method - Google Patents
Shaft well tubular pump flow channel concrete special-shaped steel mould one-stage molding construction method Download PDFInfo
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- CN105507370A CN105507370A CN201510850431.1A CN201510850431A CN105507370A CN 105507370 A CN105507370 A CN 105507370A CN 201510850431 A CN201510850431 A CN 201510850431A CN 105507370 A CN105507370 A CN 105507370A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B5/00—Use of pumping plants or installations; Layouts thereof
- E03B5/04—Use of pumping plants or installations; Layouts thereof arranged in wells
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- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention relates to a steel mould construction process, and especially relates to a concrete special-shaped steel mould one-stage molding construction method. In order to solve problems existing in the prior art, the invention provides a concrete special-shaped steel mould one-stage molding construction method for a shaft well tubular pump flow channel which is convenient to manufacture and high in installation precision. The shaft well tubular pump flow channel concrete special-shaped steel mould one-stage molding construction method comprises steps of embedded part installation; embedded part connecting piece system installation; scaffold construction; template manufacture and installation; steel bar manufacture and installation; cleaning, bin punching and acceptance inspection, concrete pouring and maintenance. The shaft well tubular pump flow channel concrete special-shaped steel mould one-stage molding construction method is advantaged in that the construction period is short, the flow channel linear molding precision is high, the flow channel concrete is bright and clean and the like, a great technological progress is brought to the construction of a future flood drainage project, the shaft well tubular pump flow channel can give a full play in flood drainage and control.
Description
Technical field
The present invention relates to a kind of punching block construction technology, especially a kind of concrete profiled punching block one-shot forming construction method.
Background technology
Silo infusion pump runner concrete all adopted wooden model construction technology in the past, although meticulous carpenter master worker has the processing handicraft of a set of uniqueness in special-shaped wooden model setting-out, making, but template face is difficult to meet design runner parameters index request, molding runners water flowing condition and design conditions deviation are comparatively large, and the head loss produced during causing pumping station operation is larger.
Summary of the invention
In order to solve the deficiency that prior art exists, the invention provides a kind of silo infusion pump runner concrete profiled punching block one-shot forming construction being convenient to make, installation accuracy is high.
A kind of silo infusion pump runner concrete profiled punching block one-shot forming construction in the present invention, comprises installation of embedded parts-> installation built-in fitting connecting member system-> scaffold and sets up-> template construct and install-> reinforcement fabrication installation-> cleaning, rush storehouse, examination-> concreting-> maintenance.Silo infusion pump runner concrete profiled punching block one-shot forming construction has construction period short, the feature such as the linear formed precision of runner is high, runner concrete is bright and clean, bring very large scientific and technological progress by the construction of project of draining flooded fields future, give full play to the effect of silo infusion pump runner in water drainage flood control.
As preferably, described built-in fitting is 10# i iron built-in fitting, and i iron base material is Q235A steel.Mechanical property is moderate, and structure is reliable.
As preferably, described scaffold adopts φ 48*3.5 steel pipe to set up, and the transfer b=0.50m of vertical rod, the advance=1.00m of vertical rod, the step pitch h=1.50m of vertical rod, steel pipe is the welded steel pipe of external diameter 48mm, wall thickness 3.5mm.Structure is reliable, easy to use.
As preferably, described template concrete surface planeness " < 4mm ", and the surface finish < 2mm of template.Making and installation make concrete normally be built and tamping, and make it form shape and size accurately, the concrete surface after form removable is bright and clean and attractive in appearance.
As preferably, in described template construct installation procedure, the panel that template contacts with concrete, and each piece form joint place, for ensureing the planeness on surface and concrete density, all inner surface is polished bright and clean with sanding machine before punching block formwork erection, between the piece of all templates and template, all use thick sticking double faced adhesive tape, to guarantee between template gap not spillage.
As preferably, the tie rod in described template construct installation procedure adopts Φ 16 pull bar, and pull bar adopts " H type pull bar ".Utilize " H type pull bar ", one can facilitate form removal, two can utilize tapered cup nut wherein to make template internal support, square hole then can also be formed after removal H-shaped nut, concrete need not be cut and just directly can carry out the repairing of tie rod hole, do not affect internal tie because of during form removal simultaneously, reliably can solve the common fault that pull bar leaks.
As preferably, described concreting comprises that concrete slump controls, concrete delamination and concreting, and concrete slump controls concrete degree of falling to control at 58 ~ 62mm, concrete delamination paving thickness 30 ~ 40cm.For runner concrete, the slump of 60mm is the binding site of engineering presentation quality and concrete work degree the best, if lower than 60mm, concrete work degree and concrete construction intensity all can not be guaranteed, and the bubble of concrete surface can not be got rid of, if be greater than 60mm, concrete very easily produces to be separated and to cross and shakes, also can produce a large amount of water vapor bubbles at concrete side, also produce a large amount of laitance at concrete surface simultaneously, cause concrete surface to produce be full of cracks.As preferably, concreting adopts chute blanking, control its free-falling and be highly no more than 1m, described concreting adopts φ 70 poker vibrator to vibrate, runner concrete vibration time no longer significantly sinks with coarse aggregate, and start to add after bleeding is as the criterion to shake 30 seconds, vibrate from middle toward two side templates propellings, slotting dot spacing is 50cm, vibrator inserts lower-layer concrete 5 ~ 10cm, in runner construction, should adopt secondary vibration technique, first time vibrates complete, is first vibrated by concrete one time before paving second defective material again.Can more effectively get rid of concrete bubble like this, reduce the generation of concrete plastic crack.
Beneficial effect of the present invention: silo infusion pump runner concrete profiled punching block one-shot forming construction has construction period short, the feature such as the linear formed precision of runner is high, runner concrete is bright and clean, bring very large scientific and technological progress by the construction of project of draining flooded fields future, give full play to the effect of silo infusion pump runner in water drainage flood control.
Accompanying drawing explanation
Fig. 1 is present invention process flow chart.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail, but this should be interpreted as that the scope of above-mentioned theme of the present invention is only limitted to above-described embodiment.
Construction technology process
Installation of embedded parts → installation built-in fitting connecting member system → scaffold and setting up → template construct installs →
Reinforcement fabrication is installed → is cleared up, rush storehouse, examination → concreting → maintenance.
Key points for operation
Built-in fitting connecting member system is installed
To arrange in strict accordance with array pitch between calculating when 10# i iron built-in fitting and connector are installed.10# i iron can be fixed by one end, the hinged pressurized in one end is considered.According to 10# i iron supporting capacity number of computations and arrangement form.
Slenderness ratio calculates
The slenderness ratio value of λ-i iron in formula;
The calculated height of L-i iron;
The i-i iron radius of gyration.
Following item to be noted when installing the construction of 10# i iron support system:
1), 10# i iron should adopt Q235A (No. 3) steel that mechanical property is moderate.Often criticize steel when marching into the arena, the material evaluation quality certification should be had.
2), 10# i iron must not have depression, the defect such as bending, damaged, and connector is installed in strict accordance with regulation enforcement.
Scaffold building
Erection construction scaffold under runner backform, scaffold adopts φ 48*3.5 steel pipe to set up, the transfer b=0.50m of vertical rod, the advance=1.00m of vertical rod, the step pitch h=1.50m of vertical rod.Steel pipe scaffold points for attention:
1) external diameter 48mm selected by steel pipe, the welded steel pipe of wall thickness 3.5mm.
2) steel pipe must not have crackle, pore, and should not have shrinkage porosite, sand holes, the remaining fash of dead head, burr, oxide skin etc. are removed clean.
3) the necessary strict shaping of the binding face of fastener and steel pipe, should ensure and contact good during steel pipe fastening, and when fastener clamping steel pipe, the minimum range of opening part should be not less than 5mm.
4) fastener moving part should be able to flexible rotating, and two surfaces of revolution gaps of rotary buckle should be less than 1mm.
5) tube bending, flatten, have crackle or serious corrosion, fastener has embrittlement, distortion, slide fastener to scrap and to prohibit the use.
Template construct is installed
Construction Technology personnel according to designing the runner linear dimensions provided, must carry out Computerized three-dimensional modeling, determine runner abnormity punching block design parameters index.Utilize modern computer modeling and cutting processing manufacture craft, improve template construct, processing, installation accuracy.
1 template construct
1) profile iron template and support thereof meet the following requirements:
1. ensure that the shape of works after concreting, size and mutual alignment meet design code;
2. there is enough stability, rigidity and intensity, concreting and the lateral pressure of making firm by ramming and vibration force can be born, and firm maintenance former state, avoid causing faulting of slab ends.Profile iron form surfacing adopts the thick Q235 steel plate of 5mm, the stupefied employing of steel ［ 10 channel-section steels.
3. template surface is bright and clean smooth, and seam is tight, and not spillage, to ensure the quality of concrete surface.
2) material of form work engineering employing and the finished product of the operation such as making, installation must carry out quality examination, after qualified, just can carry out the construction of subsequent processing.
3) formwork rigidity controls: concrete surface planeness " < 4mm ", and the surface finish < 2mm of template, so control the Relative Deflection < 2mm of large form in stencil design process, absolute amount of deflection < 4mm.
4) various connecting portion is by design of node, and draws node diagram one by one for different situations, ensures that connection is tight, firm, reliable, ensures there is foundation when constructing, avoid the randomness of construction; The design of template, making and installation make concrete normally be built and tamping, and make it form shape and size accurately, the concrete surface after form removable is bright and clean and attractive in appearance.
2 model sheetinstallat
1) general requirement
1. press design drawing surveying and locating, and by the little prism holder that die head is put, correct with checking with total powerstation.
2., in model sheetinstallat process, enough temporary fixed facilities are installed, with overturn-preventing.
3. the panel that contacts with concrete of template, and each piece form joint place, for ensureing the planeness on surface and concrete density, all inner surface is polished bright and clean with sanding machine before punching block formwork erection, all use thick sticking double faced adhesive tape between the piece of all templates and template, to guarantee between template gap not spillage.
4. tie rod: adopt Φ 16 pull bar, pull bar adopts " H type pull bar ".Utilize " H type pull bar ", one can facilitate form removal, two can utilize tapered cup nut wherein to make template internal support, square hole then can also be formed after removal H-shaped nut, concrete need not be cut and just directly can carry out the repairing of tie rod hole, do not affect internal tie because of during form removal simultaneously, reliably can solve the common fault that pull bar leaks.
Reinforcement fabrication is installed
The size of steel bar meter must meet construction drawing requirement, and after processing, the allowable variation of reinforcing bar meets regulation and stipulation.Epoxy Rebar adopts and is welded to connect, and welding point meets design and code requirement, and joint percentage controls within 50%.Coordinated by exclusive trail car and be manually transported to job site, tower crane and mobile crane coordinate manually to be installed.During reinforcement installation, what topping controlled to adopt band to roll silk rolls tightly with concrete with the prefabricated section of label and reinforcing bar, liner.Cushion block staggers mutually, dispersed placement, and tied silk also must not stretch into outside topping, supports between two-layer reinforcing bar with Φ 16200.
Concrete pouring construction
1 concrete slump controls
Through our test of many times, for runner concrete, the slump of 60mm is the binding site of engineering presentation quality and concrete work degree the best, if lower than 60mm, concrete work degree and concrete construction intensity all can not be guaranteed, the bubble of concrete surface can not be got rid of, if be greater than 60mm, concrete very easily produces to be separated and to cross and shakes, and also can produce a large amount of water vapor bubbles at concrete side, also produce a large amount of laitance at concrete surface simultaneously, cause concrete surface to produce be full of cracks.
2 concrete delaminations
Adopt the construction of horizontal slice method, concreting without longitudinal joint.Concrete delamination paving thickness about 30 ~ 40cm.
3 concretings
1) concrete adopts chute blanking, controls its free-falling and is highly no more than 1m, pollutes template and aggregate generation segregation phenomenon to avoid the cement paste splash.
2) concrete adopts φ 70 poker vibrator to vibrate, and points for attention to have:
1. according to the concrete condition of component, before vibrating, explain key points for operation in detail, organize special messenger's segmentation to be responsible for.
2. smooth can vibrating slightly done by concrete after entering mould, before the non-jolt ramming of every layer concrete, must not attach as placed concrete.
3. making concrete no longer fall to causing cavity, bottom to prevent the stone in concrete to be blocked by reinforcing bar, plug in pricker must be selected to check after tamping, then strengthen vibrating, artificial skewer of inserting wants a pricker to suffer the lower pricker of a pricker order, must not leak slotting, plug in pricker must shake slotting, to widen one's influence.
4. strengthen manually plugging and pounding vibrating with machinery in position, corner.
5. concrete quality is because reason of vibrating produces mostly.Runner concrete vibration time no longer significantly sinks with coarse aggregate, and starts to add after bleeding is as the criterion to shake 30 seconds.Vibrate from middle toward two side templates propellings, slotting dot spacing is 50cm, and vibrator inserts lower-layer concrete 5 ~ 10cm.In runner construction, should adopt secondary vibration technique, first time vibrates complete, is first vibrated by concrete one time again, can more effectively get rid of concrete bubble like this, reduce the generation of concrete plastic crack before paving second defective material.
4 concrete maintenances
1., after concrete final set, cover one deck plastic foil immediately, then add a cover geotextiles insulation layer; Hot weather concrete surface first covers straw bag, and strengthens watering maintenance, makes concrete have enough maintenance moisture content building in complete 10 days.
2. the making of concrete test block
Concrete sample make is undertaken by code requirement, and test block carries out maintenance at curing pool after making, and send test room to carry out Strength test in time.
Claims (8)
1. a silo infusion pump runner concrete profiled punching block one-shot forming construction, comprises installation of embedded parts-> installation built-in fitting connecting member system-> scaffold and sets up-> template construct and install-> reinforcement fabrication installation-> cleaning, rush storehouse, examination-> concreting-> maintenance.
2. a kind of silo infusion pump runner according to claim 1 concrete profiled punching block one-shot forming construction, is characterized in that, described built-in fitting is 10# i iron built-in fitting, and i iron base material is Q235A steel.
3. a kind of silo infusion pump runner according to claim 1 concrete profiled punching block one-shot forming construction, it is characterized in that, described scaffold adopts φ 48*3.5 steel pipe to set up, the transfer b=0.50m of vertical rod, advance=the 1.00m of vertical rod, the step pitch h=1.50m of vertical rod, steel pipe is the welded steel pipe of external diameter 48mm, wall thickness 3.5mm.
4. a kind of silo infusion pump runner according to claim 1 concrete profiled punching block one-shot forming construction, it is characterized in that, described template concrete surface planeness " < 4mm ", and the surface finish < 2mm of template.
5. a kind of silo infusion pump runner according to claim 1 concrete profiled punching block one-shot forming construction, it is characterized in that, in described template construct installation procedure, the panel that template contacts with concrete, and each piece form joint place, for ensureing the planeness on surface and concrete density, all inner surface is polished bright and clean with sanding machine before punching block formwork erection, all use thick sticking double faced adhesive tape between the piece of all templates and template, to guarantee between template gap not spillage.
6. a kind of silo infusion pump runner according to claim 1 concrete profiled punching block one-shot forming construction, is characterized in that, the tie rod in described template construct installation procedure adopts Φ 16 pull bar, and pull bar adopts " H type pull bar ".
7. a kind of silo infusion pump runner according to claim 1 concrete profiled punching block one-shot forming construction, it is characterized in that, described concreting comprises concrete slump control, concrete delamination and concreting, concrete slump controls concrete degree of falling to control at 58 ~ 62mm, concrete delamination paving thickness 30 ~ 40cm.
8. a kind of silo infusion pump runner according to claim 7 concrete profiled punching block one-shot forming construction, it is characterized in that, concreting adopts chute blanking, control its free-falling and be highly no more than 1m, described concreting adopts φ 70 poker vibrator to vibrate, runner concrete vibration time no longer significantly sinks with coarse aggregate, and start to add after bleeding is as the criterion to shake 30 seconds, vibrate from middle toward two side templates propellings, slotting dot spacing is 50cm, vibrator inserts lower-layer concrete 5 ~ 10cm, in runner construction, secondary vibration technique should be adopted, first time vibrates complete, first concrete is vibrated again one time before paving second defective material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510850431.1A CN105507370A (en) | 2015-11-30 | 2015-11-30 | Shaft well tubular pump flow channel concrete special-shaped steel mould one-stage molding construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510850431.1A CN105507370A (en) | 2015-11-30 | 2015-11-30 | Shaft well tubular pump flow channel concrete special-shaped steel mould one-stage molding construction method |
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| CN105507370A true CN105507370A (en) | 2016-04-20 |
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| CN201510850431.1A Pending CN105507370A (en) | 2015-11-30 | 2015-11-30 | Shaft well tubular pump flow channel concrete special-shaped steel mould one-stage molding construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086407A (en) * | 2017-12-25 | 2018-05-29 | 上海市水利工程集团有限公司 | Vertical shaft Concrete Construction of Powerhouse stitches method for production |
| CN108130889A (en) * | 2017-12-25 | 2018-06-08 | 上海市水利工程集团有限公司 | Pump lock main body bottom plate and flow channel layer side wall step construction joint method for production |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203604216U (en) * | 2013-10-28 | 2014-05-21 | 扬州大学 | Bulb type diving tubular pump device |
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2015
- 2015-11-30 CN CN201510850431.1A patent/CN105507370A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203604216U (en) * | 2013-10-28 | 2014-05-21 | 扬州大学 | Bulb type diving tubular pump device |
Non-Patent Citations (1)
| Title |
|---|
| 水利部建设与管理司等: "《2014年度水利水电工程建设工法汇编》", 30 November 2014, 黄河水利出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086407A (en) * | 2017-12-25 | 2018-05-29 | 上海市水利工程集团有限公司 | Vertical shaft Concrete Construction of Powerhouse stitches method for production |
| CN108130889A (en) * | 2017-12-25 | 2018-06-08 | 上海市水利工程集团有限公司 | Pump lock main body bottom plate and flow channel layer side wall step construction joint method for production |
| CN108086407B (en) * | 2017-12-25 | 2019-12-27 | 上海市水利工程集团有限公司 | Method for manufacturing second-stage concrete construction joint of vertical shaft |
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Application publication date: 20160420 |