CN104963289B - A kind of abnormity pier stud mass concrete overall time pouring construction method - Google Patents
A kind of abnormity pier stud mass concrete overall time pouring construction method Download PDFInfo
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- CN104963289B CN104963289B CN201510310497.1A CN201510310497A CN104963289B CN 104963289 B CN104963289 B CN 104963289B CN 201510310497 A CN201510310497 A CN 201510310497A CN 104963289 B CN104963289 B CN 104963289B
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- 239000004567 concrete Substances 0.000 title claims abstract description 68
- 238000010276 construction Methods 0.000 title claims abstract description 38
- 230000003014 reinforcing Effects 0.000 claims abstract description 35
- 238000009415 formwork Methods 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 claims abstract description 9
- 239000011499 joint compounds Substances 0.000 claims abstract description 7
- 238000003754 machining Methods 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 239000000463 materials Substances 0.000 claims description 7
- 239000004568 cements Substances 0.000 claims description 6
- 239000004570 mortar (masonry) Substances 0.000 claims description 5
- 238000000034 methods Methods 0.000 claims description 4
- 239000000203 mixtures Substances 0.000 claims description 4
- 239000011509 cement plaster Substances 0.000 claims description 3
- 235000011194 food seasoning agent Nutrition 0.000 claims description 3
- 239000000976 inks Substances 0.000 claims description 3
- 230000002093 peripheral Effects 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 239000002965 ropes Substances 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound 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Abstract
Description
Technical field
The present invention relates to the technical field of construction of the polymorphic structure thing of armored concrete in urban house, bridge and bridge on highway, be specifically related to a kind of abnormity pier stud mass concrete overall time pouring construction method.
Background technology
Along with in modern urban construction, owing to abnormity pier structure is attractive in appearance, strong adaptability, and save material compared with the solid pier stud of concrete and be extensively designed so that use.The complexity constructed due to it so that the installation of reinforcing bar, template to install difficulty relatively big, particularly abnormity pier pier stud outer dip angle is big, and in mould, working place is little, reinforcing bar is dense more increases concrete construction difficulty.Traditional construction method is that the main muscle of pier shaft is on-the-spot by root spreading, horizontal hoop successively colligation, and pier body formwork is installed by several times, and concrete pours by several times, the most not only long construction period, is easily generated faulting of slab ends, aberration, Appearance quality defect at pier stud body segmentation construction by several times.
Summary of the invention
The purpose of the present invention, is to provide a kind of safe and reliable, and speed of application is fast, saves the special-shaped pier stud mass concrete overall time pouring construction method of resource.
The technical scheme is that
A kind of abnormity pier stud mass concrete primary concreting construction method, use large area set shaped steel formwork, template periphery purlin system integral reinforcing pier body formwork form, the reinforcing mode of " wall-penetrating type is to drawing rod-pulling type " is used in changing conventional template, stability is high, achieve finished product pier shaft without tie rod hole, the assembly of pier body formwork overall time.And it is main for using vibrator as a plug in concrete vibrating is constructed, the vibrating method that attached vibrator is auxiliary avoids the long construction period that conventional construction method causes, the diseases such as faulting of slab ends, aberration, Appearance quality defect it are easily generated, it is characterised in that comprise the steps: at construction
1, the pre-buried location of pier stud reinforcing bar
Before cushion cap roof steel bar installs concrete construction, pier stud is measured unwrapping wire, total powerstation is used to release the vertically and horizontally axis of pier stud, determine the pre-buried position of pier stud reinforcing bar, site operation personnel are foundation according to measurement group unwrapping wire, use interim reinforcing bar anchor block post position, prepare for integral hoisting pier stud reinforcing bar.Disposably lift into position with loop wheel machine, and add temporary support, it is ensured that reinforcing bar not flexural deformation.
2, dabbing, setting-out
After 1 cushion cap pours end; after concrete reaches the intensity that design requires; the concrete of pier stud root (cushion cap top) is carried out dabbing process; it should be noted that protection to reinforcing bar during dabbing; reinforcing bar must not be damaged; cut the laitance on surface to fresh concrete surface, and clean out scum silica frost and chip.
2 surveying setting-out: using total powerstation to release Planar Contours inside and outside the longitudinal and transverse axis of pier stud and post mould at cushion cap end face, ink fountain ejects line, measures surrounding absolute altitude at the bottom of pier, installs and formwork erection benchmark.
The Design and Machining of 3 templates, installation:
1) before template construct, carry out stencil design according to pier stud design drawing, change conventional stencil design pattern, take overall peripheral purlin body to replace traditional " wall-penetrating type " pull bar, it is ensured that Surface Quality of Concrete.Template is by specialty steel construction processing and fabricating, and after processing, on-the-spot examination is spelled, and checks its rigidity, intensity, the stability vertically and horizontally connected and formwork structure size, after meeting design specification requirement, can come into operation.
2) model sheetinstallat.Template construct height considers that the height of column, hoisting transportation are convenient, construction and installation are convenient and formulate, to be suitable for the combination of all kinds of stem height.With contact position, cushion cap surface bottom template, fill and lead up embedding reality with after-pouring column concrete with mortar or other soft matters.Pier stud bottom straight-line segment template uses the mode that four sides is assembled, and vertical formwork inner support, with No. 8 elongated settings of channel-section steel, is laterally enclosed purlin and used 2 No. 16 channel-section steel assembly, and spacing 350mm, adjacent forms is enclosed purlin and fixed with oblique 20mm bolt.Pier stud Y type part first spreads the template outside batter post, then inside back cover side template, adds steel pipe Crossing brace same, and set cable wind rope between two batter posts, the stability of rigidity and template to ensure framed bent.After model sheetinstallat terminates, measurement group is to its repetition measurement, and plan-position, elevation and perpendicularity can carry out next step construction after meeting requirement.
4 concretings: owing to abnormity pier gradient is big, reinforcing bar is dense, and inner space is little, causes concrete vibrating operation to produce bigger difficulty.Using vibrator as a plug for this is main, and the mode that attached vibrator is auxiliary is vibrated.Pier stud concrete uses pumping method to enter mould.Often group column concrete material, selects the sand material with the place of production and the cement of same specification, to ensure the solid colour of each group of column.When pouring needs multilamellar, its off time is the longest must not exceed the concrete presetting period.The slump of concrete controls in the range of code requirement, concrete vibrator uses high frequency poker vibrator, fast inserting is pulled out slowly, when pouring upper strata, poker vibrator extend into lower floor 5-10cm, to ensure comprehensive vibration compacting, should prevent the impact of template vibrated device from deforming or collision slab, reinforcing bar, built-in fitting etc., find when reinforcing bar is trampled or support member shifts, revise in time, forbid operating personnel arbitrarily to walk about on reinforcing bar. Considering to install the adhesion type equipment that vibrates outside privileged sites template to strengthen vibrating, vibrating time determines with conventional experience and test simultaneously.Forbid super shake or leak shake.
5, maintenance, form removal.(with gunnysack or Polypropylence Sheet) and watering maintenance should be covered as early as possible, to keep the wetting state of concrete continuous surface after concrete placings completes to receive slurry.The concrete water seasoning date is not less than 7 days, and it is responsible to set special messenger.Template is removed when concrete compressive strength reaches 2.5MPa, notes protecting concrete surface and corner angle during form removal.Should be clean by template surface mortar dirt removal after form removable, it is deposited into appointment position, concrete surface defect should use the method agreed to through engineer to repair, and forbids to use cement wash and cement plaster.
6, crossbeam stretch-draw, mud jacking construction.After the concrete strength of pier stud reaches design requirement, crossbeam is carried out stretch-draw, mud jacking operation.
Advantages of the present invention
The present invention is by using large area set shaped steel formwork, template periphery purlin system integral reinforcing pier body formwork form, it is achieved that finished product pier shaft is without tie rod hole, and pier body formwork overall time is assembled；It is main for using vibrator as a plug in concrete vibrating is constructed, and attached vibrator is auxiliary vibrating method, substantially increases pier stud finished product overall appearance quality and geometric accuracy, has ensured construction safety simultaneously, saved construction cost.
Accompanying drawing illustrates:
Fig. 1 is construction technology process schematic diagram.
Detailed description of the invention
A kind of abnormity pier stud mass concrete overall time pouring construction method, specifically includes following step:
1, the pre-buried location of pier stud reinforcing bar
Before cushion cap roof steel bar installs concrete construction, measurement group measures unwrapping wire to pier stud, with reference to cap design of pile size: long 1050cm, wide 650cm, using total powerstation to release the vertically and horizontally axis of pier stud, determine the pre-buried position of pier stud reinforcing bar, site operation personnel are foundation according to measurement group unwrapping wire, use interim reinforcing bar anchor block post position, prepare for integral hoisting pier stud reinforcing bar.Disposably lift into position with loop wheel machine, and add temporary support, it is ensured that reinforcing bar not flexural deformation.
2, dabbing, setting-out
1) after cushion cap pours end; after concrete reaches the intensity that design requires; the concrete of pier stud root (cushion cap top) is carried out dabbing process; it should be noted that protection to reinforcing bar during dabbing; damage reinforcing bar not; cut the laitance on surface to fresh concrete surface, and clean out scum silica frost and chip.
2) surveying setting-out: use total powerstation, with reference to pier stud bottom design size: long 2 × 190+a(design is given)；Wide by 160, unit: cm, release Planar Contours inside and outside the longitudinal and transverse axis of pier stud and post mould at cushion cap end face, ink fountain ejects line, measures surrounding absolute altitude at the bottom of pier, installs and formwork erection benchmark.
The Design and Machining of 3 templates, installation
1) before template construct, according to pier stud design drawing, overall peripheral purlin body mode is taked to carry out stencil design.
Template is by specialty steel construction processing and fabricating, and after processing, on-the-spot examination is spelled, and checks its rigidity, intensity, the stability vertically and horizontally connected and formwork structure size, after meeting design specification requirement, standby.
2) model sheetinstallat: template construct height considers that the height of column, hoisting transportation are convenient, construction and installation are convenient and formulate, to be suitable for the combination of all kinds of stem height.With contact position, cushion cap surface bottom template, fill and lead up embedding reality with after-pouring column concrete with mortar or other soft matters.Pier stud bottom straight-line segment template uses the mode that four sides is assembled, and vertical formwork inner support, with No. 8 elongated settings of channel-section steel, is laterally enclosed purlin and used 2 No. 16 channel-section steel assembly, and spacing 350mm, adjacent forms is enclosed purlin and fixed with oblique 20mm bolt.Pier stud Y type part first spreads the template outside batter post, then inside back cover side template, adds steel pipe Crossing brace same, and set cable wind rope between two batter posts, the stability of rigidity and template to ensure framed bent.After model sheetinstallat terminates, measurement group is to its repetition measurement, and plan-position, elevation and perpendicularity can carry out next step construction after meeting requirement.
4 concretings
It is main for using vibrator as a plug, and the mode that attached vibrator is auxiliary is vibrated.Pier stud concrete uses pumping method to enter mould.Often group column concrete material, selects the sand material with the place of production and the cement of same specification.When pouring needs multilamellar, its off time is the longest must not exceed the concrete presetting period.The slump of concrete controls in the range of code requirement, concrete vibrator uses high frequency poker vibrator, fast inserting is pulled out slowly, when pouring upper strata, poker vibrator extend into lower floor 5-10cm, should prevent the impact of template vibrated device from deforming or collision slab, reinforcing bar, built-in fitting etc., find, when reinforcing bar is trampled or support member shifts, to revise in time, forbid operating personnel arbitrarily to walk about on reinforcing bar. Considering to install the adhesion type equipment that vibrates outside privileged sites template to strengthen vibrating, vibrating time determines with conventional experience and test simultaneously.Forbid super shake or leak shake.
5, maintenance, form removal
(with gunnysack or Polypropylence Sheet) and watering maintenance should be covered as early as possible, to keep the wetting state of concrete continuous surface after concrete placings completes to receive slurry.The concrete water seasoning date is not less than 7 days, and it is responsible to set special messenger.Template is removed when concrete compressive strength reaches 2.5MPa, notes protecting concrete surface and corner angle during form removal.Should be clean by template surface mortar dirt removal after form removable, it is deposited into appointment position, concrete surface defect should use the method agreed to through engineer to repair, and forbids to use cement wash and cement plaster.
6, crossbeam stretch-draw, mud jacking construction
After the concrete strength of pier stud reaches design requirement, crossbeam is carried out stretch-draw, mud jacking operation.
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| CN106049283A (en) * | 2016-06-05 | 2016-10-26 | 中交路桥建设有限公司 | Bridge rectangular pier hanging die construction method |
| CN106012811B (en) * | 2016-06-14 | 2017-12-29 | 江苏燕宁建设工程有限公司 | Vase type pier pier shaft steel bar overall binding construction method for hanging |
| CN108952171B (en) * | 2018-09-05 | 2020-10-16 | 韩春静 | Method for carrying out concrete pouring construction by civil engineering pouring device |
| CN110093852A (en) * | 2019-05-15 | 2019-08-06 | 平煤神马建工集团有限公司 | Shaped form bridge pier Construction technology of fair-faced concrete |
| CN110578300A (en) * | 2019-09-26 | 2019-12-17 | 常州市市政建设工程有限公司 | Large-volume concrete pouring process for special-shaped bridge pier column |
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| CN102251481B (en) * | 2011-05-06 | 2013-11-06 | 中铁七局集团第一工程有限公司 | Railway pier layered construction method and construction device |
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