CN105298020B - Semi-precast circular steel pipe regenerated mixed concrete pillar and preparation method thereof - Google Patents
Semi-precast circular steel pipe regenerated mixed concrete pillar and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a semi-precast circular steel pipe regenerated mixed concrete pillar and a preparation method thereof. The pillar comprises a steel pipe, a plurality of mutually separated regenerated mixed concrete sections placed in the axial direction of the inside of the steel pipe in turn, and post-poured new concrete arranged in the interspace of the steel pipe and the regenerated mixed concrete sections in a filling manner, wherein hoisting bent hooks stretching out the top of each regenerated mixed concrete section and short steel bars stretching out the bottom of the regenerated mixed concrete section are respectively pre-buried in the regenerated mixed concrete section; the regenerated mixed concrete sections are poured by waste concrete blocks and concrete; the reserved interspace used for pouring the post-poured new concrete is formed between the adjacent regenerated mixed concrete sections. The precast regenerated mixed concrete sections are adopted, and the construction process of the regenerated mixed concrete is finished in advance independently, so that the problem that in site operation, as the regenerated mixed concrete construction steps are more, the whole construction schedule is influenced is avoided, and important significances are provided for promotion of engineering application of the regenerated mixed concrete pillar.
Description
Technical field
The present invention relates to waste and old concrete recycles and steel core concrete column component, more particularly, to a kind of half prefabricated round steel
Pipe renewable hybrid concrete post and preparation method thereof.
Background technology
Concrete-filled circular steel tube column is the very rational combined member of one kind, have that bearing capacity is high, rigidity is big, ductility is good,
The excellent feature of anti-seismic performance, is widely used in civil construction field.With the quickening of urbanization process, China's building industry is just
Progressively stride forward towards building industrialization direction, one of its feature is exactly to greatly develop prefabricated components, to realize component precision and matter
The purposes such as amount improves, manpower consumption reduces, speed of application quickening.If integral prefabricated way is taken to concrete-filled circular steel tube column,
Because pillar deadweight is very big, not readily transportable and lifting；If taking segmentation prefabricated concrete-filled circular steel tube column and then live splicing group
Dress way, then because piece is more and each segmental concrete between lack effectively connection, pillar globality reduce simultaneously potential lack
Sunken position increases.
Because natural sand, the exploitation welding of stone and reserves day by day reduce, waste and old concrete is as a kind of valuable " spy
Different resource ", its recycling increasingly arouses extensive attention at home and abroad.With regenerated coarse aggregate and recycled fine aggregate phase
Than recycling process using what bigger (waste and old) the concrete block physical ability of yardstick greatly simplified waste and old concrete.But, when useless
When old concrete block is applied to concrete-filled circular steel tube column, because the steel pipe of job site is in vertical state and highly larger,
For ensureing the mixing pouring quality between waste and old concrete block and novel concrete it is necessary to adopt novel concrete and waste and old concrete
The way that block is repeatedly alternately thrown in and fully vibrated, not only will spend a large amount of manpowers for the discontinuity of waste and old concrete block
Throw in, and significantly dragged slowly site operation progress.
Content of the invention
It is an object of the invention to overcoming the shortcoming and defect of above-mentioned prior art, providing a kind of structure simple, transporting, apply
Work conveniently half prefabricated round steel pipe renewable hybrid concrete post and preparation method thereof, it has, and bearing capacity is high, rigidity is big,
Ductility is good, the excellent feature of anti-seismic performance.
The present invention is achieved through the following technical solutions：
A kind of half prefabricated round steel pipe renewable hybrid concrete post, is axially sequentially placed including steel pipe 1, in the inside of steel pipe 1
Many spaced renewable hybrid concrete sections 3, and be filled in steel pipe 1 and each renewable hybrid concrete sections 3 it
Between in space after the novel concrete 2 that pours；In every root regeneration mix concrete sections 3, it is embedded with respectively and stretches out its top
Lifting crotch 6 and the bar dowel 7 stretching out its bottom.
Described renewable hybrid concrete sections 3 is poured and is formed by waste and old concrete block 4 and concrete 5；Described bar dowel 7
The top of renewable hybrid concrete sections 3 that is all adjacent of end offset, make each adjacent renewable hybrid concrete sections 3
Between formed and interspace for the pre- of novel concrete 2 poured after pouring.
Described waste and old concrete block 4 is that old buildings, structures, road, bridge or dykes and dams are removed and removed protection
Size after layer and all or part of reinforcing bar is not less than the waste and old concrete block of 100mm.
The novel concrete 2 pouring after described and concrete 5 are natural aggregate concrete or regenerated aggregate concrete, and pressure resistance
Degree is not less than 30MPa.
Described waste and old concrete block 4 is 1 with the mass ratio of concrete 5:4～1:1；Described renewable hybrid concrete sections
3 single height are not less than 800mm.
The quantity of described bar dowel 7 is 4, and the diameter of each bar dowel 7 is identical and is not less than 20mm, every bar dowel 7
Exposed parts length is 60mm～100mm.
The preparation method of above-mentioned half prefabricated round steel pipe renewable hybrid concrete post is as follows：
(1), during prefabricated renewable hybrid concrete sections 3, molding is made in the mode of couching of renewable hybrid concrete sections 3
Waste and old concrete block 4 is fully watered moistening by template, and pre-buried four bar dowels 7 and lifting crotch 6 respectively in advance；Pour
When building, abundant using the waste and old concrete block 4 disposably throwing in surface wettability in forming panel and then again casting concrete 5
Vibrate, after its solidification, obtain prefabricated renewable hybrid concrete sections 3；
(2) prefabricated renewable hybrid concrete sections 3 is transported to job site, and it is moistening that it is fully watered, and adopts
Pass through lifting crotch 6 with loop wheel machine and the renewable hybrid concrete sections 3 of surface wettability is hung in prior mounted steel pipe 1 successively
Inside, and make each renewable hybrid concrete sections 3 axially aligned, then along renewable hybrid concrete sections 3 side with
Novel concrete 2 that space between steel pipe 1 inwall is poured after pouring into simultaneously inserts vibrating head and fully vibrates, until inside whole steel pipe 1
Space be filled, after its solidification after obtain half prefabricated round steel pipe renewable hybrid concrete post.
The present invention, with respect to prior art, has such advantages as and effect：
The present invention takes half prefabricated way to steel core concrete column, will the concrete within round steel pipe be divided into prefabricated and
After pour two parts：Pre-erection is many root regenerations mix concrete sections, is separated with bar dowel, each regenerative mixed between it is adjacent
The space inserting vibrating head enough is left between the side of concrete segment and round steel inside pipe wall；After pour part be site operation when
Be filled between sections side and round steel inside pipe wall, and between adjacent renewable hybrid concrete sections after pour novel concrete.
Due to every root regeneration mix concrete segmental height limited so that stacking, transport, lifting are more convenient, simultaneously because after pour new
Concrete can fill the space between renewable hybrid concrete sections side and round steel inside pipe wall well, and each regeneration is mixed
Space between conjunction concrete segment is so that the globality of pillar is ensured.
The present invention takes the prefabricated way of segmentation to the renewable hybrid concrete within round steel pipe, due to the mixing of every root regeneration
Using the mode formwork that couches when concrete segment is prefabricated, thus only need to disposably throw in waste and old concrete block in forming panel
Then body pours novel concrete again and fully vibrates, and speed of perfusion is substantially accelerated.Renewable hybrid concrete sections in advance
Prefabricated, not only can better ensure that sections construction quality, more effectively improve waste and old concrete block Replacement rate, but also
Job site is made to avoid the problem that pours of renewable hybrid concrete, site operation efficiency is obviously improved, and meets building industrialization
Developing direction.
In sum, there is the not readily transportable lifting of the prefabricated way of routine and the post of concrete-filled circular steel tube column in prior art
The problems such as sub- globality reduces, there is manpower flower in discontinuity input within round steel pipe for the large scale waste and old concrete block simultaneously
The problems such as Fei great, site operation progress are slow；Renewable hybrid concrete sections of the present invention can be poured using waste and old concrete block, greatly
The processing procedure such as simplify greatly broken, screening when waste and old concrete recycles, purify, achievable waste and old concrete efficient
Recycle；The prefabricated every root regeneration mix concrete segmental height of the present invention limited so that stacking, transport, lifting more square
Just, simultaneously because after pour novel concrete and can fill well between renewable hybrid concrete sections side and round steel inside pipe wall
Space between space, and each renewable hybrid concrete sections is so that the globality of pillar is ensured；Present invention regeneration is mixed
Close the prefabricated in advance of concrete segment, not only can better ensure that the construction quality of sections, more effectively improve waste and old concrete
The Replacement rate of block, but also make job site avoid the problem that pours of renewable hybrid concrete, site operation efficiency is obvious
Lifting, meets the developing direction of building industrialization.
Brief description
Fig. 1 is the prefabricated round steel pipe renewable hybrid concrete post horizontal section schematic diagram of the present invention half.
Fig. 2 is the prefabricated round steel pipe renewable hybrid concrete post longitudinal profile schematic diagram of the present invention half.
Specific embodiment
With reference to specific embodiment, the present invention is more specifically described in detail.
Embodiment 1
As shown in Figure 1, 2.Present invention one kind half prefabricated round steel pipe renewable hybrid concrete post, including steel pipe 1, in steel pipe 1
Many spaced renewable hybrid concrete sections 3 being axially sequentially placed of inside, and be filled in steel pipe 1 and each regeneration
The novel concrete 2 pouring after in space between mix concrete sections 3.
In every root regeneration mix concrete sections 3, it is embedded with the lifting crotch 6 stretching out its top respectively and stretches out its bottom
The bar dowel 7 in portion.
Described renewable hybrid concrete sections 3 is poured and is formed by waste and old concrete block 4 and concrete 5；Described bar dowel 7
The top of renewable hybrid concrete sections 3 that is all adjacent of end offset, make each adjacent renewable hybrid concrete sections 3
Between formed and interspace for the pre- of novel concrete 2 poured after pouring.
Described steel pipe 1 external diameter 500mm, wall thickness 6mm, length of steel pipe 4000mm, the renewable hybrid concrete sections 3 bottom surface length of side
For 345mm, high 1200mm, bar dowel 7 stretches out bottom surface 100mm, and lifting crotch 6 stretches out top surface 50mm.Type of steels Q235, actual measurement
Yield strength 265MPa, tensile strength 361.2MPa.
Renewable hybrid concrete sections 3 is by the waste and old concrete block 4 of cubic compressive strength 30MPa and cube resistance to compression
The concrete 5 of intensity 40MPa mixes, after mixing cubic compressive strength be 36MPa, after pour novel concrete 2 cube
Body comprcssive strength is 40MPa.After protective layer and whole reinforcing bar are removed and remove for old buildings to waste and old concrete block 4
Waste and old concrete block, concrete 5 and after the novel concrete 2 that pours be natural aggregate concrete.The spy of waste and old concrete block 4
Levying waste and old concrete block 4 and the mass ratio of concrete 5 in a size of 100～200mm, and renewable hybrid concrete sections 3 is
1:1.5, in the whole concrete of steel duct, waste and old concrete block 4 and the mass ratio of other all concrete are 1:3.
The preparation method of the prefabricated round steel pipe renewable hybrid concrete post of the present invention half can be achieved by the steps of：
(1), during prefabricated renewable hybrid concrete sections 3, molding is made in the mode of couching of renewable hybrid concrete sections 3
Waste and old concrete block 4 is fully watered moistening by template, and pre-buried four bar dowels 7 and lifting crotch 6 respectively in advance；Pour
When building, abundant using the waste and old concrete block 4 disposably throwing in surface wettability in forming panel and then again casting concrete 5
Vibrate, after its solidification, obtain prefabricated renewable hybrid concrete sections 3；
(2) prefabricated renewable hybrid concrete sections 3 is transported to job site, and it is moistening that it is fully watered, and adopts
Pass through lifting crotch 6 with loop wheel machine and the renewable hybrid concrete sections 3 of surface wettability is hung in prior mounted steel pipe 1 successively
Inside, and make each renewable hybrid concrete sections 3 axially aligned, then along renewable hybrid concrete sections 3 side with
Novel concrete 2 that space between steel pipe 1 inwall is poured after pouring into simultaneously inserts vibrating head and fully vibrates, until inside whole steel pipe 1
Space be filled, after its solidification after obtain half prefabricated round steel pipe renewable hybrid concrete post.
For the sake of contrast, take external diameter 500mm, wall thickness 6mm and material identical round steel pipe, cubic compressive strength is
The waste and old concrete block of 30MPa and cubic compressive strength are the natural aggregate concrete of 40MPa, and waste and old concrete block
Body is 1 with the mass ratio of natural aggregate concrete:3, directly alternately input pours in steel pipe, makes conventional on-site construction
Round steel pipe renewable hybrid concrete post.It is 8854kN by calculating the axial press capacity of two kinds of concrete columns,
But the prefabricated round steel pipe renewable hybrid concrete post of the present invention half can simplify the loaded down with trivial details construction process in scene, can save the engineering time
And cost of labor, beneficial to the industrialized production of steel tube regeneration mix concrete post.
Embodiment 2
, in addition to following characteristics, other features are same as Example 1 for the present embodiment.
Described steel pipe 1 external diameter 600mm, wall thickness 8mm, length of steel pipe 4000mm, the renewable hybrid concrete sections 3 bottom surface length of side
For 410mm, high 1200mm, bar dowel 7 stretches out bottom surface 100mm, and lifting crotch 6 stretches out top surface 50mm.Type of steels Q235, actual measurement
Yield strength 270MPa, tensile strength 368.7MPa.
Renewable hybrid concrete sections 3 is by the waste and old concrete block 4 of cubic compressive strength 30MPa and cube resistance to compression
The concrete 5 of intensity 40MPa mixes, after mixing cubic compressive strength be 36MPa, after pour novel concrete 2 cube
Body comprcssive strength is 40MPa.
For the sake of contrast, take external diameter 600mm, wall thickness 8mm and material identical round steel pipe, cubic compressive strength is
The waste and old concrete block of 30MPa and cubic compressive strength are the natural aggregate concrete of 40MPa, and waste and old concrete block
Body is 1 with the mass ratio of natural aggregate concrete:3, directly alternately input pours in steel pipe, makes conventional on-site construction
Round steel pipe renewable hybrid concrete post.It is 13290kN by calculating the axial press capacity of two kinds of concrete columns,
But the prefabricated round steel pipe renewable hybrid concrete post of the present invention half can simplify the loaded down with trivial details construction process in scene, can save the engineering time
And cost of labor, beneficial to the industrialized production of steel tube regeneration mix concrete post.
Embodiment 3
, in addition to following characteristics, other features are same as Example 1 for the present embodiment.
Described steel pipe 1 external diameter 500mm, wall thickness 6mm, length of steel pipe 4000mm, the renewable hybrid concrete sections 3 bottom surface length of side
For 345mm, high 1200mm, bar dowel 7 stretches out bottom surface 100mm, and lifting crotch 6 stretches out top surface 50mm.Type of steels Q235, actual measurement
Yield strength 265MPa, tensile strength 362.9MPa.
Renewable hybrid concrete sections 3 is by the waste and old concrete block 4 of cubic compressive strength 30MPa and cube resistance to compression
The concrete 5 of intensity 30MPa mixes, after mixing cubic compressive strength be 30MPa, after pour novel concrete 2 cube
Body comprcssive strength is 30MPa.For the sake of contrast, take external diameter 500mm, wall thickness 6mm and material identical round steel pipe, cube resistance to compression
The natural aggregate concrete for 30MPa for the waste and old concrete block and cubic compressive strength for 30MPa for the intensity, directly alternately
Input pours the round steel pipe renewable hybrid concrete post making conventional on-site construction in steel pipe.By calculating two
The axial press capacity planting concrete column is 7671kN, but the prefabricated round steel pipe renewable hybrid concrete post of the present invention half can
Simplify the loaded down with trivial details construction process in scene, engineering time and cost of labor can be saved, beneficial to steel tube regeneration mix concrete post
Industrialized production.
As described above, just can preferably realize the present invention.
Embodiments of the present invention are simultaneously not restricted to the described embodiments, other any spirit without departing from the present invention
With the change made under principle, modification, replacement, combine, simplify, all should be equivalent substitute mode, be included in the present invention's
Within protection domain.
Claims (6)
1. a kind of preparation method of half prefabricated round steel pipe renewable hybrid concrete post, described half prefabricated round steel pipe regenerative mixed coagulation
Earth pillar includes steel pipe (1), many spaced renewable hybrid concrete sections being axially sequentially placed in the inside of steel pipe (1)
(3) novel concrete (2) pouring, and after being filled in space between steel pipe (1) and each renewable hybrid concrete sections (3)；?
In every root regeneration mix concrete sections (3), it is embedded with the lifting crotch (6) stretching out its top respectively and stretches out the short of its bottom
Reinforcing bar (7)；
Described renewable hybrid concrete sections (3) is poured and is formed by waste and old concrete block (4) and concrete (5)；Described short steel
The top of the renewable hybrid concrete sections (3) that the end of muscle (7) is all adjacent offsets, and makes each adjacent regenerative mixed coagulation
Form pre- the interspacing for the novel concrete (2) pouring after pouring between native sections (3)；
It is characterized in that the preparation method of described half prefabricated round steel pipe renewable hybrid concrete post comprises the steps：
(1), during prefabricated renewable hybrid concrete sections (3), molding is made in the mode of couching of renewable hybrid concrete sections (3)
Waste and old concrete block (4) is fully watered wet by template, and pre-buried four bar dowels (7) and lifting crotch (6) respectively in advance
Profit；When pouring, throw in the waste and old concrete block (4) of surface wettability and then pour coagulation again using disposable in forming panel
Native (5) fully vibrate, and obtain prefabricated renewable hybrid concrete sections (3) after its solidification；
(2) prefabricated renewable hybrid concrete sections (3) is transported to job site, and it is moistening that it is fully watered, adopt
Loop wheel machine passes through lifting crotch (6) and the renewable hybrid concrete sections (3) of surface wettability is hung in prior mounted steel successively
Pipe (1) is internal, and makes each renewable hybrid concrete sections (3) axially aligned, then along renewable hybrid concrete sections (3)
Side and steel pipe (1) inwall between space pour into after the novel concrete (2) that pours insert vibrating head and fully vibrate, until whole
The internal space of individual steel pipe (1) is filled, and obtains half prefabricated round steel pipe renewable hybrid concrete post after its solidification.
2. according to claim 1 half prefabricated round steel pipe renewable hybrid concrete post preparation method it is characterised in that：Described
Waste and old concrete block (4) is old buildings or the chi after protective layer and all or part of reinforcing bar is removed and removed to structures
The very little waste and old concrete block not less than 100mm.
3. according to claim 2 half prefabricated round steel pipe renewable hybrid concrete post preparation method it is characterised in that：Described
The concrete (5) in novel concrete (2) and described renewable hybrid concrete sections (3) pouring afterwards is natural aggregate concrete or again
Raw aggregate concrete, and comprcssive strength is not less than 30MPa.
4. according to claim 1 half prefabricated round steel pipe renewable hybrid concrete post preparation method it is characterised in that：Described
The mass ratio of the concrete (5) in waste and old concrete block (4) and described renewable hybrid concrete sections (3) is 1:4～1:1；
The single height of described renewable hybrid concrete sections (3) is not less than 800mm.
5. according to claim 1 half prefabricated round steel pipe renewable hybrid concrete post preparation method it is characterised in that：Described
The exposed height of lifting crotch (6) is less than 60mm.
6. according to claim 1 half prefabricated round steel pipe renewable hybrid concrete post preparation method it is characterised in that：Described
The quantity of bar dowel (7) be 4, the diameter of each bar dowel (7) identical and be not less than 20mm, every bar dowel (7) expose portion
Length is divided to be 60mm～100mm.
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| CN105298020B true CN105298020B (en) | 2017-02-22 |
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| CN109025063B (en) * | 2018-08-01 | 2021-05-14 | 广州五羊建设机械有限公司 | Manufacturing method of sectional type steel pipe regeneration mixed component and positioner used by same |
| CN109356185A (en) * | 2018-10-30 | 2019-02-19 | 南昌大学 | A kind of prefabricated pier foundation of regeneration monolith and its construction method |
| CN111851861A (en) * | 2020-07-30 | 2020-10-30 | 华南理工大学 | Partially prefabricated reinforced structure of existing H-shaped steel column and construction process thereof |
| CN112417548B (en) * | 2020-11-03 | 2024-02-20 | 杭州铁木辛柯建筑结构设计事务所有限公司 | Method for improving unidirectional bending limit bearing of cross section of round steel tube concrete column |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2524147A1 (en) * | 1975-05-30 | 1976-12-02 | Ytong Ag | METHOD OF USING FRAGMENTS AND WASTE MATERIALS AND PRODUCTS MANUFACTURED THEREOF IN THE MANUFACTURING OF STEAM-CURED ACCESSIBLE CONCRETE |
| CN101324115A (en) * | 2008-07-04 | 2008-12-17 | 华南理工大学 | Steel tube regeneration mixing component |
| CN101418629A (en) * | 2008-10-14 | 2009-04-29 | 华南理工大学 | Regenerated composite reinforced concrete beam and construction method thereof |
| CN101487333A (en) * | 2009-02-13 | 2009-07-22 | 江苏南通二建集团有限公司 | Recycled concrete superposed column and its implementing method |
| CN103422620A (en) * | 2013-08-27 | 2013-12-04 | 陕西建科兴业钢结构有限公司 | Prefabricated hollow steel-reinforced concrete column and splicing structure and splicing method thereof |
-
2015
- 2015-11-26 CN CN201510846626.9A patent/CN105298020B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2524147A1 (en) * | 1975-05-30 | 1976-12-02 | Ytong Ag | METHOD OF USING FRAGMENTS AND WASTE MATERIALS AND PRODUCTS MANUFACTURED THEREOF IN THE MANUFACTURING OF STEAM-CURED ACCESSIBLE CONCRETE |
| CN101324115A (en) * | 2008-07-04 | 2008-12-17 | 华南理工大学 | Steel tube regeneration mixing component |
| CN101418629A (en) * | 2008-10-14 | 2009-04-29 | 华南理工大学 | Regenerated composite reinforced concrete beam and construction method thereof |
| CN101487333A (en) * | 2009-02-13 | 2009-07-22 | 江苏南通二建集团有限公司 | Recycled concrete superposed column and its implementing method |
| CN103422620A (en) * | 2013-08-27 | 2013-12-04 | 陕西建科兴业钢结构有限公司 | Prefabricated hollow steel-reinforced concrete column and splicing structure and splicing method thereof |
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