CN205712736U - A kind of half Prefabricated concrete-filled steel tube post of built-in high-strength shaped steel - Google Patents
A kind of half Prefabricated concrete-filled steel tube post of built-in high-strength shaped steel Download PDFInfo
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- CN205712736U CN205712736U CN201620552536.9U CN201620552536U CN205712736U CN 205712736 U CN205712736 U CN 205712736U CN 201620552536 U CN201620552536 U CN 201620552536U CN 205712736 U CN205712736 U CN 205712736U
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Abstract
The utility model discloses half Prefabricated concrete-filled steel tube post of a kind of built-in high-strength shaped steel, including steel pipe, many spaced precast concrete segments being vertically sequentially placed in steel duct；Gap is left between inwall and the outer wall of precast concrete segment of steel pipe；The middle part of every precast concrete segment is reserved with vertically communicated shaped steel passage, and this shaped steel passage is used for laying shaped steel；Gap is left between wall and the outer surface of shaped steel of this shaped steel passage；Steel duct is perfused with grouting material；This grouting material fills up the gap between each precast concrete segment, gap between the wall of shaped steel passage and the outer surface of shaped steel, and the gap between the outer wall of precast concrete segment and the inwall of steel pipe.This half Prefabricated concrete-filled steel tube post, is significantly reduced the sectional dimension of post under same requirement for bearing capacity, thus increases the usable floor area of building, reach good economic and social benefit.
Description
Technical field
This utility model relates to concrete column, particularly relates to half Prefabricated concrete-filled steel tube post of a kind of built-in high-strength shaped steel.
Background technology
The lower pillar of super-high building structure is huge due to the vertical load born, and its sectional dimension is the biggest,
Not only occupy more space, affect the use function of building, and cause the earthquake of structure to be made because member dead weight increases
With increasing, unfavorable to structural seismic.
In recent years, production and the application of high-strength steel reach its maturity, and reduction pillar is cut by the employing of such material undoubtedly
Face size is useful.But owing to the compressive buckling of high-strength steel is usually surrendered early than its pressurized so that it is the advantage of high intensity is also
Can not give full play to.
At present, Building Trade in China just strides forward towards building industrialization direction, and one of its feature greatly develops prefabricated dress exactly
Join formula component, to realize the purpose such as component precision and Quality advance, manpower consumption's reduction, speed of application quickening.If but to pillar
Carry out integral prefabricated, owing to its deadweight is the biggest, it will bring the biggest difficulty to subsequent transportation and lifting；If pillar is carried out segmentation
Prefabricated then on-the-spot splicing, may cause its stress performance to reduce because pillar globality is weakened again.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming and defect of above-mentioned prior art, it is provided that a kind of simple in construction, structure
Part size is less, half Prefabricated concrete-filled steel tube post of the built-in high-strength shaped steel of convenient and quick construction.It is high, just that it has bearing capacity
Degree is big, ductility is good, the excellent feature of anti-seismic performance.In this pillar, owing to high-strength shaped steel is by outer concrete and steel pipe
There is force constraint, the compressive buckling of high-strength steel can be prevented effectively from, thus give full play to its high-strength advantage.Meanwhile, this
In pillar, it is only that the concrete of steel duct is carried out segmentation is prefabricated, all be subject to the effective of outside completely steel pipe due to them
Constraint, therefore the globality of pillar is available preferably ensures.
This utility model is achieved through the following technical solutions:
Half Prefabricated concrete-filled steel tube post of a kind of built-in high-strength shaped steel, including steel pipe 1, vertically depends in the inside of steel pipe 1
Many spaced precast concrete segments 3 of secondary placement；Between inwall and the outer wall of precast concrete segment 3 of steel pipe 1
Stay gap；
The inside of every precast concrete segment 3 is embedded with respectively stretches out the hoisting ring device 5 at its top and stretches out bottom it
Bar dowel 6；
The middle part of every precast concrete segment 3 be reserved with axially through shaped steel passage, this shaped steel passage is used for laying
Shaped steel 2；Gap is left between wall and the outer surface of shaped steel 2 of this shaped steel passage；
The inside of steel pipe 1 is perfused with grouting material 4；Between this grouting material 4 fills up between each precast concrete segment 3
Gap between gap, the wall of shaped steel passage and the outer surface of shaped steel 2, and the outer wall of precast concrete segment 3 and steel pipe 1
Gap between inwall.
Described precast concrete segment 3 is watered by natural aggregate concrete or regenerated aggregate concrete or reconstituting piece body concrete
Build and form；The comprcssive strength of concrete is not less than 30MPa；
Gap between inwall and the outer wall of precast concrete segment 3 of steel pipe 1 is 5～15mm；The wall of shaped steel passage
And the gap between the outer surface of shaped steel 2 is 5～10mm；The bottom sides of steel pipe 1 leaves grout hole；Grouting material 4 is by being somebody's turn to do
Grout hole pours into the inside of steel pipe 1 from bottom to top, and fills up the gap between each precast concrete segment 3, the wall of shaped steel passage
Gap between gap between the outer surface of face and shaped steel 2, and the inwall of the outer wall of precast concrete segment 3 and steel pipe 1.
The shape of cross section of described shaped steel 2 is I shape, H type or cross, the shape of cross section of shaped steel passage and its
Corresponding；The yield strength of described shaped steel 2 is more than 460MPa；The cross section of described steel pipe 1 is circular or polygon.
The height that reserves of described hoisting ring device 5 is less than 10mm；The quantity of described bar dowel 6 is 3～4, and diameter is not less than
20mm, exposed parts a length of 10～15mm；Described grouting material 4 is chemical grouting material or cement-based grouting material.
The preparation method of half Prefabricated concrete-filled steel tube post of a kind of built-in high-strength shaped steel is as follows:
Step one: during precast concrete segment 3, formwork is divided into exterior sheathing and interior template, and the shape of cross section of exterior sheathing is
Circle or polygon, the shape of cross section of interior template is the shape of cross section of shaped steel 2；The most pre-buried at the top of formwork and bottom
Hoisting ring device 5 and bar dowel 6；Then toward in the space between exterior sheathing and interior template, natural aggregate concrete or regeneration are poured
Aggregate concrete or reconstituting piece body concrete, fully vibrate, and obtains precast concrete segment 3 after it solidifies；
Step 2: construction location places base plate, is uprightly welded on base plate by shaped steel 2；Loop wheel machine is used to be sleeved on by steel pipe 1
The outside of shaped steel 2, and make shaped steel 2 be positioned at the middle part of steel pipe 1, then steel pipe 1 is welded and fixed with base plate；
Step 3: the precast concrete segment 3 of molding is transported to job site, and it is fully watered water-wet；Use
The precast concrete segment 3 of surface wettability is hung in step 2 by hoisting ring device 5 and the most installs by loop wheel machine the most successively
Steel pipe 1 internal, at this hoisting process Shaped Steel 2 vertically through the reserved shaped steel passage of precast concrete segment 3；Then lead to
Cross grout pipe by grouting material 4 from the grout hole of steel pipe 1 bottom sides by lower from upper high pressure pouring, until it is internal to fill up steel pipe 1
Whole gaps；After grouting material 4 solidifies, grout hole soldering is sealed and polishes, obtain the half prefabricated of built-in high-strength shaped steel
Steel core concrete column.
This utility model, relative to prior art, has such advantages as and effect:
(1) half Prefabricated concrete-filled steel tube post of a kind of built-in high-strength shaped steel of the present utility model, owing to high-strength shaped steel is set to
In the reserved shaped steel channel interior of precast concrete segment, and outside precast concrete segment, also have steel pipe, in addition steel duct
All gaps all closely knit by grouting material filling, the most high-strength shaped steel is had force constraint by outer concrete and steel pipe, can
It is prevented effectively from the compressive buckling of high-strength steel, thus gives full play to its high-strength advantage.
(2) due to only concrete to steel duct, to carry out segmentation prefabricated, and they are all subject to outside complete steel pipe
Operative constraint, all gaps of steel duct are all closely knit by grouting material filling in addition, therefore pillar globality can get
Preferably ensure.
(3) employing of high-strength shaped steel substantially increases the vertical bearing capacity of pillar so that the sectional dimension of pillar can be obvious
Reducing, the usable floor area of building increases, and the deadweight of pillar simultaneously significantly alleviates, and geological process and the foundation of structure are made
Valency decreases, good in economic efficiency.
(4) due to the limited height of every precast concrete segment so that it stacks, transport, lift more convenient.
Accompanying drawing explanation
Fig. 1 is that half Prefabricated concrete-filled steel tube axis of a cylinder of the built-in high-strength shaped steel of this utility model is to sectional structure schematic diagram.
Fig. 2 is the half Prefabricated concrete-filled steel tube post radially sectional structure schematic diagram of the built-in high-strength shaped steel of this utility model.
Detailed description of the invention
Below in conjunction with specific embodiment, this utility model is more specifically described in detail.
Embodiment 1
As shown in Figure 1, 2.The utility model discloses half Prefabricated concrete-filled steel tube post of a kind of built-in high-strength shaped steel, including
Steel pipe 1, the many spaced precast concrete segments 3 being vertically sequentially placed in the inside of steel pipe 1；The inwall of steel pipe 1
And stay gap between the outer wall of precast concrete segment 3；
The inside of every precast concrete segment 3 is embedded with respectively stretches out the hoisting ring device 5 at its top and stretches out bottom it
Bar dowel 6；
The middle part of every precast concrete segment 3 be reserved with axially through shaped steel passage, this shaped steel passage is used for laying
Shaped steel 2；Gap is left between wall and the outer surface of shaped steel 2 of this shaped steel passage；
The inside of steel pipe 1 is perfused with grouting material 4；Between this grouting material 4 fills up between each precast concrete segment 3
Gap between gap, the wall of shaped steel passage and the outer surface of shaped steel 2, and the outer wall of precast concrete segment 3 and steel pipe 1
Gap between inwall.
Described precast concrete segment 3 is watered by natural aggregate concrete or regenerated aggregate concrete or reconstituting piece body concrete
Build and form；The comprcssive strength of concrete is not less than 30MPa；
Gap between inwall and the outer wall of precast concrete segment 3 of steel pipe 1 is 5～15mm；The wall of shaped steel passage
And the gap between the outer surface of shaped steel 2 is 5～10mm；The bottom sides of steel pipe 1 leaves grout hole；Grouting material 4 is by being somebody's turn to do
Grout hole pours into the inside of steel pipe 1 from bottom to top, and fills up the gap between each precast concrete segment 3, the wall of shaped steel passage
Gap between gap between the outer surface of face and shaped steel 2, and the inwall of the outer wall of precast concrete segment 3 and steel pipe 1.
The shape of cross section of described shaped steel 2 is I shape, H type or cross, the shape of cross section of shaped steel passage and its
Corresponding；The yield strength of described shaped steel 2 is more than 460MPa；The cross section of described steel pipe 1 is circular or polygon.
The height that reserves of described hoisting ring device 5 is less than 10mm；The quantity of described bar dowel 6 is 3～4, and diameter is not less than
20mm, exposed parts a length of 10～15mm；Described grouting material 4 is chemical grouting material or cement-based grouting material.
The cross section of the present embodiment steel pipe 1 is circular, external diameter 1000mm, wall thickness 20mm, steel pipe 1 length 3660mm, steel
Trade mark Q345, surveys yield strength 400MPa；Every precast concrete segment 3 is cylinder, diameter 940mm, highly
1200mm, the gap between wall and the outer surface of shaped steel 2 of upper and lower through shaped steel passage reserved in the middle part of it is 5mm, mixed
Solidifying soil comprcssive strength is 50MPa；Bar dowel 6 stretches out bottom surface 15mm, hoisting ring device 5 reserve height 9mm；The horizontal stroke of welded H section steel
Sectional area 658.02cm2, type of steels Q890, survey yield strength 900MPa；Epoxy grouting selected by grouting material
Material.
Half Prefabricated concrete-filled steel tube column preparation method of built-in high-strength shaped steel, can be achieved by the steps of:
Step one: during precast concrete segment 3, formwork is divided into exterior sheathing and interior template, and the shape of cross section of exterior sheathing is
Circle or polygon, the shape of cross section of interior template is the shape of cross section of shaped steel 2；The most pre-buried at the top of formwork and bottom
Hoisting ring device 5 and bar dowel 6；Then toward in the space between exterior sheathing and interior template, natural aggregate concrete or regeneration are poured
Aggregate concrete or reconstituting piece body concrete, fully vibrate, and obtains precast concrete segment 3 after it solidifies；
Step 2: construction location places base plate, is uprightly welded on base plate by shaped steel 2；Loop wheel machine is used to be sleeved on by steel pipe 1
The outside of shaped steel 2, and make shaped steel 2 be positioned at the middle part of steel pipe 1, then steel pipe 1 is welded and fixed with base plate；
Step 3: the precast concrete segment 3 of molding is transported to job site, and it is fully watered water-wet；Use
The precast concrete segment 3 of surface wettability is hung in step 2 by hoisting ring device 5 and the most installs by loop wheel machine the most successively
Steel pipe 1 internal, at this hoisting process Shaped Steel 2 vertically through the reserved shaped steel passage of precast concrete segment 3；Then lead to
Cross grout pipe by grouting material 4 from the grout hole of steel pipe 1 bottom sides by lower from upper high pressure pouring, until it is internal to fill up steel pipe 1
Whole gaps；After grouting material 4 solidifies, grout hole soldering is sealed and polishes, obtain the half prefabricated of built-in high-strength shaped steel
Steel core concrete column.
For the sake of contrast, take the identical material round steel pipe of external diameter 1000mm, wall thickness 20mm, the steel of the most built-in H profile steel
The trade mark changes to take Q345, makes half Prefabricated concrete-filled steel tube post of built-in general strong H profile steel.Research draws, in the present embodiment in set high
The capacity under axial of half Prefabricated concrete-filled steel tube post of strong H profile steel is 145982kN, and half prefabricated steel pipe of built-in general strong H profile steel
The capacity under axial of concrete column is only 113081kN, it is seen that in the case of pillar sectional dimension is identical, and the former axial compression is held
Carry force rate the latter and improve 29.1%.
For the sake of contrast, take the identical material round steel pipe of external diameter 774mm, wall thickness 20mm, built-in profile steel area
658.02cm2, type of steels Q890, survey yield strength 900MPa, make half Prefabricated concrete-filled steel tube of built-in high-strength H profile steel
Post.Being computed understanding, it can reach the capacity under axial identical with half Prefabricated concrete-filled steel tube post of above-mentioned built-in general strong H profile steel
113081kN, i.e. under same requirement for bearing capacity, the cross-sectional area of half Prefabricated concrete-filled steel tube post of built-in high-strength H profile steel subtracts
Having lacked 40.1%, concrete amount reduces 45.7% therewith.
For the sake of contrast, take the identical material round steel pipe of external diameter 1000mm, wall thickness 20mm, the type of steels of built-in H profile steel
Taking Q890, the cubic compressive strength of concrete takes 50MPa, makes the complete cast-in-place steel core concrete column of built-in high-strength H profile steel.Logical
Crossing and calculate, the capacity under axial of two kinds of pillars is 145982kN, but the half of the built-in high-strength H profile steel of this utility model is prefabricated
Steel core concrete column is more convenient for realizing industrialized production.
Embodiment 2
The present embodiment is in addition to following characteristics, and other features are same as in Example 1.
The cross section of described steel pipe 1 is circular, external diameter 1500mm, wall thickness 30mm, length 3660mm of steel pipe 1, steel board
Number Q345, surveys yield strength 400MPa；Every precast concrete segment 3 is cylinder, diameter 1420mm, highly
1200mm, the gap between wall and the outer surface of shaped steel 2 of upper and lower through shaped steel passage reserved in the middle part of it is 5mm, mixed
Solidifying soil comprcssive strength is 50MPa；Bar dowel 6 stretches out bottom surface 15mm, hoisting ring device 5 reserve height 9mm；The horizontal stroke of welded H section steel
Sectional area 1480.55cm2, type of steels Q890, survey yield strength 900MPa；Epoxy grouting selected by grouting material
Material.
For the sake of contrast, take the identical material round steel pipe of external diameter 1500mm, wall thickness 30mm, the steel of the most built-in H profile steel
The trade mark changes to take Q345, makes half Prefabricated concrete-filled steel tube post of built-in general strong H profile steel.Research draws, in the present embodiment in set high
The capacity under axial of half Prefabricated concrete-filled steel tube post of strong H profile steel is 328460kN, and half prefabricated steel pipe of built-in general strong H profile steel
The capacity under axial of concrete column is only 254433kN, it is seen that in the case of pillar sectional dimension is identical, and the former axial compression is held
Carry force rate the latter and improve 29.1%.
For the sake of contrast, take the identical material round steel pipe of external diameter 1160mm, wall thickness 30mm, built-in profile steel area
1480.55cm2, type of steels Q890, survey yield strength 900MPa, make half prefabricated steel tube concrete of built-in high-strength H profile steel
Earth pillar.Being computed understanding, it can reach the axial compression carrying identical with half Prefabricated concrete-filled steel tube post of above-mentioned built-in general strong H profile steel
Power 254433kN, i.e. under same requirement for bearing capacity, the cross-sectional area of half Prefabricated concrete-filled steel tube post of built-in high-strength H profile steel
Decreasing 40.2%, concrete amount reduces 45.8% therewith.
For the sake of contrast, take the identical material round steel pipe of external diameter 1500mm, wall thickness 30mm, the type of steels of built-in H profile steel
Taking Q890, the cubic compressive strength of concrete takes 50MPa, makes the complete cast-in-place steel core concrete column of built-in high-strength H profile steel.Logical
Crossing and calculate, the capacity under axial of two kinds of pillars is 328460kN, but the half of the built-in high-strength H profile steel of this utility model is prefabricated
Steel core concrete column is more convenient for realizing industrialized production.
As it has been described above, just can preferably realize this utility model.
Embodiment of the present utility model is also not restricted to the described embodiments, and other are any without departing from of the present utility model
The change made under spirit and principle, modify, substitute, combine, simplify, all should be the substitute mode of equivalence, be included in
Within protection domain of the present utility model.
Claims (4)
1. half Prefabricated concrete-filled steel tube post of a built-in high-strength shaped steel, it is characterised in that: include steel pipe (1), at steel pipe (1)
The internal many spaced precast concrete segments (3) being vertically sequentially placed；The inwall of steel pipe (1) and precast concrete
Gap is stayed between the outer wall of sections (3)；
The inside of every precast concrete segment (3) is embedded with respectively stretches out the hoisting ring device (5) at its top and stretches out bottom it
Bar dowel (6)；
The middle part of every precast concrete segment (3) be reserved with axially through shaped steel passage, this shaped steel passage is used for laying type
Steel (2)；Gap is left between the outer surface of the wall of this shaped steel passage and shaped steel (2)；
The inside of steel pipe (1) is perfused with grouting material (4)；This grouting material (4) fills up between each precast concrete segment (3)
Gap between gap, the wall of shaped steel passage and the outer surface of shaped steel (2), and the outer wall of precast concrete segment (3) with
Gap between the inwall of steel pipe (1).
Half Prefabricated concrete-filled steel tube post of built-in high-strength shaped steel the most according to claim 1, it is characterised in that: described prefabricated
Concrete segment (3) is poured formed by natural aggregate concrete or regenerated aggregate concrete or reconstituting piece body concrete；Concrete
Comprcssive strength not less than 30MPa；
Gap between inwall and the outer wall of precast concrete segment (3) of steel pipe (1) is 5～15mm；The wall of shaped steel passage
And the gap between the outer surface of shaped steel (2) is 5～10mm；The bottom sides of steel pipe (1) leaves grout hole；Grouting material (4)
Poured into the inside of steel pipe (1) by this grout hole from bottom to top, and fill up the gap between each precast concrete segment (3), type
Gap between the outer surface of the wall of steel passage and shaped steel (2), and the outer wall of precast concrete segment (3) and steel pipe (1)
Inwall between gap.
Half Prefabricated concrete-filled steel tube post of built-in high-strength shaped steel the most according to claim 1, it is characterised in that: described shaped steel
(2) shape of cross section is I shape, H type or cross, and the shape of cross section of shaped steel passage is corresponding thereto；Described shaped steel
(2) yield strength is more than 460MPa；The cross section of described steel pipe (1) is circular or polygon.
Half Prefabricated concrete-filled steel tube post of built-in high-strength shaped steel the most according to any one of claim 1 to 3, its feature exists
In: the height that reserves of described hoisting ring device (5) is less than 10mm；The quantity of described bar dowel (6) is 3～4, and diameter is not less than
20mm, exposed parts a length of 10～15mm；Described grouting material (4) is chemical grouting material or cement-based grouting material.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105926853A (en) * | 2016-06-07 | 2016-09-07 | 华南理工大学 | Semi-precast concrete filled steel tubular column with built-in high-strength structural steel and manufacturing method thereof |
| CN110952440A (en) * | 2019-11-19 | 2020-04-03 | 东北大学 | Prefabricated section steel concrete and reinforced concrete spliced pier and construction process |
-
2016
- 2016-06-07 CN CN201620552536.9U patent/CN205712736U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105926853A (en) * | 2016-06-07 | 2016-09-07 | 华南理工大学 | Semi-precast concrete filled steel tubular column with built-in high-strength structural steel and manufacturing method thereof |
| WO2017211329A3 (en) * | 2016-06-07 | 2018-02-01 | 华南理工大学 | Semi-prefabricated concrete-filled steel tubular column having inner high-strength steel, and fabrication method for same |
| CN110952440A (en) * | 2019-11-19 | 2020-04-03 | 东北大学 | Prefabricated section steel concrete and reinforced concrete spliced pier and construction process |
| CN110952440B (en) * | 2019-11-19 | 2021-06-15 | 东北大学 | Prefabricated section steel concrete and reinforced concrete spliced pier and construction process |
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