CN104481167A - High-formwork construction method for miscellaneous fill ground - Google Patents
High-formwork construction method for miscellaneous fill ground Download PDFInfo
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- CN104481167A CN104481167A CN201410541134.4A CN201410541134A CN104481167A CN 104481167 A CN104481167 A CN 104481167A CN 201410541134 A CN201410541134 A CN 201410541134A CN 104481167 A CN104481167 A CN 104481167A
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Abstract
The invention discloses a high-formwork construction method for miscellaneous fill ground. The method is characterized in that an independent steel support serves as a vertical stress component, and a square steel main keel serves as a horizontal stress component; and the elevation of the independent steel support is detected by a level monitor in a concrete pouring process, when the independent steel support is more than 5mm, the concrete pouring immediately stops, and fine-adjusting nuts of the independent steel support are adjusted, so that a floor formwork can be in a level condition. The construction method comprises the steps of: (1) establishing the steel independent support; (2) strengthening the integrality of the independent steel support by using a horizontal crossbar; (3) building up a beam bottom die; (4) binding beam reinforcing steel bars and beam side die; (5) adjusting the jacking elevation, and placing the square steel main keel; (6) placing a steel channel secondary keel; (7) laying the floor template; (8) binding the reinforcing steel bars of the floor template; (9) detecting and pouring concrete; and (10) disassembling the support system.
Description
Technical field
The present invention relates to a kind of construction method of high-supported formwork, particularly a kind of miscellaneous fill ground high-formwork construction method.
Background technology
At house building course, when ground is shelved on miscellaneous fill ground, because miscellaneous fill ground is difficult to compacting, in high-supported formwork situation, easily there is local subsidence.Land subsidence can cause vertical rod discontinuity to occur unstability on the one hand, one deck floor can be made to occur funnel shaped mass defect on the other hand.For this two problems: the stability that will ensure supporting rod on the one hand as far as possible, vertical rod to be made on the other hand to carry out regulating according to local, ground situation of sinking thus to ensure that construction quality can meet the demands.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of miscellaneous fill ground high-formwork construction method, solves the problem of traditional miscellaneous fill ground high-formwork construction difficult quality guarantee.
The present invention adopts steel independently to support as vertical applied force component, adopts square steel main joist and channel-section steel secondary joist as horizontal force component.Floor Slab Deformation is caused in order to prevent from sinking due to the not firm generation template in ground in concreting process, the present invention adopts information-aided construction, by the absolute altitude situation that level gauge monitoring steel independently supports in concreting process, steel independently supports absolute altitude change once be greater than 5mm, stop concreting immediately, the fine-tuning nut that adjustment steel independently supports, makes slab form keep level.
In the present invention steel independently support structure adopt as follows: A-frame leg is collapsible, A-frame leg cross section is steel square tube, rubber pad is had bottom A-frame leg, A-frame is connected with steel fastener by pin, outer tube is welded on steel fastener, outer tube cross sectional shape is the round steel pipe of hollow, outer tube external diameter is 60mm, outer tube wall thickness is 5 ~ 7mm, outer tube top arranges screw thread, it is 100 ~ 120mm that screw thread arranges length, fine-tuning nut is had outside threaded portion round steel pipe, fine-tuning nut length is 150mm, dish-shaped rubber washer is set above fine-tuning nut, regulate owing to adopting internal thread, screw thread does not expose, can effectively prevent screw thread by clashing and breaking and pollution.Interior pipe is had above outer tube, interior tube section shape is the round steel pipe of hollow, inner tube length is 500 ~ 700mm, and interior pipe external diameter is 48mm, and inner tubal wall is thick is 4 ~ 6mm, interior pipe has a back-shaped pin pin-and-hole every 100mm, back-shaped pin pin-and-hole diameter is 8 ~ 12mm, and during operation, back-shaped pin is inserted reversion pin pin-and-hole, back-shaped pin is shelved on above fine-tuning nut, pipe in supporting member inserts, supporting member is fixedly connected with by steel pin with interior pipe.Supporting member is welded with 4 little angle steel, headroom is 80 ~ 90mm, arranges according to square steel main joist width.
Construction sequence comprises:
(1) install steel independently to support
Independently support according to the position of supporting plane arrangement diagram and pitch arrangement steel, steel independently supports and highly regulates as required, interts back-shaped pin.Ensure that steel independently supports layout and embarks on journey in column, and perpendicular to floor face.The obvious concrete gravity of different slab thicknesses has very big difference, and working load can increase, and steel independence tie distance wants corresponding adjustment.According to a large amount of engineering experience, be the engineering of 100mm for slab thickness, steel independence tie distance spacing is 2.7 ~ 2.9m; Be the engineering of 120mm for slab thickness, steel independence tie distance spacing is 2.4 ~ 2.6m; Be the engineering of 130mm for slab thickness, steel independence tie distance spacing is 2.1 ~ 2.3m; Slab thickness is greater than to the engineering of 130mm, steel independence tie distance spacing is 1.6 ~ 2.0m.
Square steel main joist two ends will arrange steel apart from wall 500mm place and two square steel main joist lap-joints and independently support.
(2) steel independence support integral is strengthened with horizontal cross bar
Adopt twice horizontal cross bars, horizontal cross bar adopts diameter to be the steel pipe of 48mm, and first horizontal cross bar overhead distance is 2 ~ 2.2m, and second horizontal cross bar setting position is in first cross bar and steel independently support bottom supporting member.
Traditional support will arrange multiple tracks horizontal cross bar, needs the steel pipe of at substantial on the one hand, and when constructing, personnel are current in addition, materials handling is inconvenient.In addition, in traditional support system, usually bar of sweeping the floor will be adopted, and invention need not adopt, in this, save material.
(3) beam bottom board is set up
1, the length direction of template arrangement is vertical with channel-section steel secondary joist, parallel with square steel main joist.
2, formwork edge joint position is arranged on channel-section steel secondary joist center line.
3, prioritization standard form, arrangement remainder is assigned to narrow shape template, the spacing of narrow shape template and maintenance support interval, and to remove when concrete reaches 50% design strength when seeking template, then maintenance support interval should be less than or equal to 2m.
(4) colligation beam steel and beam side
(5) square steel main joist is placed after adjusting jacking absolute altitude
Square steel pipe main joist is placed according to the direction in main joist layout plan and spacing, and by adjustable jack adjustment girder elevation of top.
After placing square steel main joist, steel independently supports fine-tuning nut and finely tunes, and makes square steel main joist at same level height.
(6) channel-section steel secondary joist is put
To note dodging the position needing the later stage to punch when secondary joist is arranged, comprise measure hole, pump line hole, electromechanics punches.
At narrow space, as passageway, balcony etc., when channel-section steel secondary joist is difficult to arrange, can only arrange square steel main joist, channel-section steel secondary joist 100mm × 100mm flitch replaces.
(7) slab form is laid
(8) floor bar colligation
(9) concreting is checked and accepted
(10) support system is removed
1, unclamp fine-tuning nut, square steel main joist and channel-section steel secondary joist decline, and are lain on one's side by channel-section steel secondary joist.
2, stripping, takes off template from channel-section steel secondary joist neutral gear.
3, channel-section steel secondary joist is removed.
4, square steel main joist is removed.
5, extract back-shaped pin, shrink support bar, removal supporting member, remove support bar.
The present invention has following characteristics:
1, adjust steel in time according to condition of construction independently to support, the mass defect occurred because support system occurs depression can be avoided.
2, when concrete reaches strength of mould stripping, except reservation maintenance support and a small amount of narrow shape template, all the other are all dismountable, not only ensure superstructure sequential production but also can accelerate template turnover use.
3, support on-the-spot cross bar relatively few, thus personnel are current, materials handling is unimpeded, on-the-spot civilization.
Accompanying drawing explanation
Fig. 1 is that steel independently supports schematic diagram.
Reference numeral: 1, rubber pad, 2, A-frame, 3, steel fastener, 4, outer tube, 5, fine-tuning nut, 6, rubber washer, 7, interior pipe, 8, supporting member, 9, back-shaped pin.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present embodiment is described in detail.
The present embodiment is by the absolute altitude situation that level gauge monitoring steel independently supports in concreting process, and steel independently supports absolute altitude change once be greater than 5mm, stops concreting immediately, the fine-tuning nut that adjustment steel independently supports, and makes slab form keep level.
In the present embodiment steel independently support structure adopt as follows: A-frame 2 leg is collapsible, A-frame 2 leg cross section is steel square tube, rubber pad 1 is had bottom A-frame leg, A-frame 2 is connected with steel fastener 3 by pin, outer tube is welded on steel fastener 3, outer tube 4 cross sectional shape is the round steel pipe of hollow, outer tube 4 external diameter is 60mm, outer tube 4 wall thickness is 5 ~ 7mm, outer tube 4 top arranges screw thread, it is 110mm that screw thread arranges length, fine-tuning nut 5 is had outside threaded portion round steel pipe, fine-tuning nut 5 length is 150mm, fine-tuning nut 5 arranges dish-shaped rubber washer 6 above.Outer tube 4 has interior pipe 7 above, interior pipe 7 cross sectional shape is the round steel pipe of hollow, interior pipe 7 length is 500 ~ 700mm, and interior pipe 7 external diameter is 48mm, and interior pipe 7 wall thickness is 4 ~ 6mm, interior pipe 7 has back-shaped pin 9 pin-and-hole every 100mm, back-shaped pin 9 pin-and-hole diameter is 8 ~ 12mm, and during operation, back-shaped pin 9 is inserted reversion pin 9 pin-and-hole, back-shaped pin 9 is shelved on above fine-tuning nut 5, supporting member 8 inserts interior pipe 7, and supporting member 8 is fixedly connected with by steel pin with interior pipe 7.Supporting member 8 is welded with 4 little angle steel, headroom is 80 ~ 90mm, arranges according to square steel main joist width.
Construction sequence comprises:
(1) install steel independently to support
Independently support according to the position of supporting plane arrangement diagram and pitch arrangement steel, steel independently supports and highly regulates as required, interts back-shaped pin.Ensure that steel independently supports layout and embarks on journey in column, and perpendicular to floor face.The obvious concrete gravity of different slab thicknesses has very big difference, and working load can increase, and steel independence tie distance wants corresponding adjustment.The present embodiment slab thickness is the engineering of 120mm, and steel independence tie distance spacing is 2.5m.
Square steel main joist two ends will arrange steel apart from wall 500mm place and two square steel main joist lap-joints and independently support.
(2) steel independence support integral is strengthened with horizontal cross bar
Adopt twice horizontal cross bar, horizontal cross bar adopts diameter to be the steel pipe of 48mm, and first horizontal cross bar overhead distance is 2.1m, and second horizontal cross bar overhead distance is 4.3m.
(3) beam bottom board is set up
1, the length direction of template arrangement is vertical with channel-section steel secondary joist, parallel with square steel main joist.
2, formwork edge joint position is arranged on channel-section steel secondary joist center line.
3, prioritization standard form, arrangement remainder is assigned to narrow shape template.
(4) colligation beam steel and beam side
(5) square steel main joist is placed after adjusting jacking absolute altitude
Square steel pipe main joist is placed according to the direction in main joist layout plan and spacing, and by adjustable jack adjustment girder elevation of top.
After placing square steel main joist, steel independently supports fine-tuning nut and finely tunes, and makes square steel main joist at same level height.
(6) channel-section steel secondary joist is put
To note dodging the position needing the later stage to punch when secondary joist is arranged, comprise measure hole, pump line hole, electromechanics punches.
(7) slab form is laid
(8) floor bar colligation
(9) concreting is checked and accepted
(10) support system is removed
1, unclamp fine-tuning nut, square steel main joist and channel-section steel secondary joist decline, and are lain on one's side by channel-section steel secondary joist.
2, stripping, takes off template from channel-section steel secondary joist neutral gear.
3, channel-section steel secondary joist is removed.
4, square steel main joist is removed.
5, extract back-shaped pin, shrink support bar, removal supporting member, remove support bar.
Claims (7)
1. a miscellaneous fill ground high-formwork construction method, is characterized in that adopting steel independently to support as vertical applied force component, adopts square steel main joist and channel-section steel secondary joist as horizontal force component; By the absolute altitude situation that level gauge monitoring steel independently supports in concreting process, steel independently supports absolute altitude change once be greater than 5mm, stops concreting immediately, the fine-tuning nut that adjustment steel independently supports, and makes slab form keep level;
Construction sequence comprises:
(1) install steel independently to support
Independently support according to the position of supporting plane arrangement diagram and pitch arrangement steel, steel independently supports and highly regulates as required, interts back-shaped pin;
(2) steel independence support integral is strengthened with horizontal cross bar
Adopt twice horizontal cross bar, horizontal cross bar adopts diameter to be the steel pipe of 48mm;
(3) beam bottom board is set up
1, the length direction of template arrangement is vertical with channel-section steel secondary joist, parallel with square steel main joist;
2, formwork edge joint position is arranged on channel-section steel secondary joist center line;
3, prioritization standard form, arrangement remainder is assigned to narrow shape template, the spacing of narrow shape template and maintenance support interval, and to remove when concrete reaches 50% design strength when seeking template, then maintenance support interval should be less than or equal to 2m;
(4) colligation beam steel and beam side
(5) square steel main joist is placed after adjusting jacking absolute altitude
Square steel pipe main joist is placed according to the direction in main joist layout plan and spacing, and by adjustable jack adjustment girder elevation of top;
After placing square steel main joist, steel independently supports fine-tuning nut and finely tunes, and makes square steel main joist at same level height;
(6) channel-section steel secondary joist is put
To note dodging the position needing the later stage to punch when secondary joist is arranged, comprise measure hole, pump line hole, electromechanics punches;
(7) slab form is laid
(8) floor bar colligation
(9) concreting is checked and accepted
(10) support system is removed
1, unclamp fine-tuning nut, square steel main joist and channel-section steel secondary joist decline, and are lain on one's side by channel-section steel secondary joist;
2, stripping, takes off template from channel-section steel secondary joist neutral gear;
3, channel-section steel secondary joist is removed;
4, square steel main joist is removed;
5, extract back-shaped pin, shrink support bar, removal supporting member, remove support bar.
2. the miscellaneous fill ground high-formwork construction method according to claim, it is characterized in that steel independently supports structure and adopts as follows: A-frame leg is collapsible, A-frame leg cross section is steel square tube, rubber pad is had bottom A-frame leg, A-frame is connected with steel fastener by pin, outer tube is welded on steel fastener, outer tube cross sectional shape is the round steel pipe of hollow, outer tube external diameter is 60mm, outer tube wall thickness is 5 ~ 7mm, outer tube top arranges screw thread, it is 100 ~ 120mm that screw thread arranges length, fine-tuning nut is had outside threaded portion round steel pipe, fine-tuning nut length is 150mm, dish-shaped rubber washer is set above fine-tuning nut, interior pipe is had above outer tube, interior tube section shape is the round steel pipe of hollow, inner tube length is 500 ~ 700mm, and interior pipe external diameter is 48mm, and inner tubal wall is thick is 4 ~ 6mm, interior pipe has a back-shaped pin pin-and-hole every 100mm, back-shaped pin pin-and-hole diameter is 8 ~ 12mm, and during operation, back-shaped pin is inserted reversion pin pin-and-hole, back-shaped pin is shelved on above fine-tuning nut, pipe in supporting member inserts, supporting member is fixedly connected with by steel pin with interior pipe, supporting member is welded with 4 little angle steel, headroom is 80 ~ 90mm, arranges according to square steel main joist width.
3. the miscellaneous fill ground high-formwork construction method according to claim, it is characterized in that for slab thickness be the engineering of 100mm, steel independence tie distance spacing is 2.7 ~ 2.9m; Be the engineering of 120mm for slab thickness, steel independence tie distance spacing is 2.4 ~ 2.6m; Be the engineering of 130mm for slab thickness, steel independence tie distance spacing is 2.1 ~ 2.3m; Slab thickness is greater than to the engineering of 130mm, steel independence tie distance spacing is 1.6 ~ 2.0m.
4. the miscellaneous fill ground high-formwork construction method according to claim, is characterized in that installing steel and independently supports in step and will ensure that steel independently supports layout and embarks on journey in column, and perpendicular to floor face.
5. the miscellaneous fill ground high-formwork construction method according to claim, is characterized in that installing steel and independently supports square steel main joist two ends in step and will arrange steel apart from wall 500mm place and two square steel main joist lap-joints and independently support.
6. the miscellaneous fill ground high-formwork construction method according to claim, it is characterized in that first horizontal cross bar overhead distance be 2 ~ 2.2m, second horizontal cross bar setting position is in first cross bar and steel independently support bottom supporting member.
7. the miscellaneous fill ground high-formwork construction method according to claim, is characterized in that at narrow space, and when channel-section steel secondary joist is difficult to arrange, only arrange square steel main joist, channel-section steel secondary joist 100mm × 100mm flitch replaces.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410541134.4A CN104481167A (en) | 2014-09-27 | 2014-09-27 | High-formwork construction method for miscellaneous fill ground |
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| CN201410541134.4A CN104481167A (en) | 2014-09-27 | 2014-09-27 | High-formwork construction method for miscellaneous fill ground |
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Cited By (6)
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| CN105525752A (en) * | 2016-01-20 | 2016-04-27 | 江西师范大学 | Formwork support rod |
| CN107687268A (en) * | 2017-09-29 | 2018-02-13 | 江苏省苏中建设集团股份有限公司 | A kind of building construction frame |
| CN107905543A (en) * | 2017-11-28 | 2018-04-13 | 上海建工五建集团有限公司 | Laminated floor slab supporting structure and its application construction method |
| CN110439269A (en) * | 2018-05-02 | 2019-11-12 | 深圳市前海胜德建筑科技有限公司 | Independent support system and its installation method based on high-supported formwork |
| CN111305596A (en) * | 2019-11-28 | 2020-06-19 | 上海泾东建筑发展有限公司 | Rapid dismounting and mounting reinforcing structure for beamless floor slab of basement and construction method thereof |
| CN113323216A (en) * | 2021-07-06 | 2021-08-31 | 中建八局天津建设工程有限公司 | Support-free laminated slab and construction method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525752A (en) * | 2016-01-20 | 2016-04-27 | 江西师范大学 | Formwork support rod |
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| CN111305596A (en) * | 2019-11-28 | 2020-06-19 | 上海泾东建筑发展有限公司 | Rapid dismounting and mounting reinforcing structure for beamless floor slab of basement and construction method thereof |
| CN113323216A (en) * | 2021-07-06 | 2021-08-31 | 中建八局天津建设工程有限公司 | Support-free laminated slab and construction method thereof |
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Application publication date: 20150401 |