CN203876019U - Pore-forming member manufacturing preformed hole of precast concrete component - Google Patents
Pore-forming member manufacturing preformed hole of precast concrete component Download PDFInfo
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- CN203876019U CN203876019U CN201420056935.7U CN201420056935U CN203876019U CN 203876019 U CN203876019 U CN 203876019U CN 201420056935 U CN201420056935 U CN 201420056935U CN 203876019 U CN203876019 U CN 203876019U
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- pore
- preformed hole
- piece
- rigid member
- forming piece
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Abstract
The utility model relates to a pore-forming member manufacturing preformed hole of precast concrete component and belongs to the technical field of a concrete structure. During manufacturing of a concrete component, the pore-forming member is placed in a preformed hole position; the pore-forming member is formed by a central rigid member and a soft member covering the rigid member; then concrete is casted; before or after the concrete is casted, the rigid member is pulled out; and at last, when the soft member is pulled out, the preformed hole is formed. The pore-forming member for the preformed hole of precast concrete component can be used for preformation of a tunnel of a concrete hollow component and a connection hole of a precast concrete component.
Description
Technical field
The utility model relates to a kind of pore-forming piece of making reserving hole on concrete component.
Background technology
In concrete structure engineering, a lot of situations need reserving hole.For example, in precast concrete, need to reserve connecting hole for seam crossing Bar Anchorage; Or in precast concrete hollow unit, need reserving hole channel.The forming hole method of existing precast concrete is generally that steel pipe internal mold or pore-forming piece are set in concrete, extracts out and form hole before concrete final set; This method is taken out the hole time and is difficult to hold, and takes out too early easily collapse hole, damage hole surrounding concrete of hole time, and hole quality is bad; Difficulty is large to take out hole time delay, damage hole wall concrete, and hole quality is difficult to guarantee, and manufacture difficulty is larger; And the preformed hole hole wall forming is level and smooth, cause preformed hole surrounding concrete poor with the switching performance that is filled in concrete in preformed hole or mortar, the reliability of the building that impact is assembled into by precast concrete.
Summary of the invention
Of the present utility modelly provide a kind of pore-forming piece of making concrete component preformed hole, can significantly improve preformed hole hole quality, hole wall is coarse, strengthens preformed hole surrounding concrete and is filled in concrete in preformed hole or the switching performance of mortar; Particularly in precast concrete, precast concrete be can strengthen and concrete in preformed hole or the switching performance of mortar are filled in, improve the reliability of monolithic architecture thing.
Described pore-forming piece comprises the rigid member at center and the flexible piece of parcel rigid member.Rigid member employing metal or fibre reinforced composites (being FRP) or timber or other rigid materials are made; Flexible piece adopts rubber or other materials with certain elasticity, toughness to make.Rigid member is the skeleton of pore-forming piece; Different shapes can be made in flexible piece surface, with the preformed hole surface smoothing of avoiding forming.For the convenient rigid member of extracting out, between rigid member and flexible piece, contact-making surface is smooth; Or scribble lubricant between rigid member and flexible piece; Or the separator around rigid member is set between rigid member and flexible piece, and smooth with rigid member contact-making surface, separator is made up of more than two or two rigid material, convenient extraction.Install or extract flexible piece for convenient, flexible piece can be divided into two lobes or more than two lobes.
Pore-forming piece profile is cylindricality, and length direction cross section is constant; Or pore-forming piece profile is taper, length direction diminishes gradually; Or pore-forming piece profile is spindle, length direction is small at both ends and big in the middle; Or many waveforms, length direction is wavy.The cross-sectional profile of pore-forming piece is circle or ellipse or polygon or fold-line-shaped, or other shapes, can form difform preformed hole.Pore-forming piece profile variation, rigid member wherein generally keeps cylindricality or taper.
Rigid member in pore-forming piece is cylindricality or taper, convenient extraction.Flexible piece outer surface is male and fomale(M&F), and for example corrugated surface or groove shape face or helicoid or point-like male and fomale(M&F) or other on-plane surfaces are avoided the preformed hole surface smoothing forming.
Pore-forming piece surface is coated with one deck concrete surface retarders, and in the time that surrounding concrete has hardened and reached some strength, the concrete contacting with pore-forming piece does not solidify, and more convenient extraction pore-forming piece ensures hole quality; If water washes away preformed hole after extraction pore-forming piece, can form undisguised material concrete surface.
In the time that concrete component particularly has two or more preformed holes in precast concrete, in order to increase the connection integrity between rear pouring concrete or mortar, can make regional area between different preformed holes be connected; By projection is set on flexible piece, allow the projection of adjacent flexible piece fit together, reach this technique effect.
For convenience perfusion mortar in preformed hole, preformed hole is connected with grout hole or steam vent.
The step that the pore-forming piece that employing the utility model proposes is made preformed hole is: while making concrete component, place pore-forming piece in preformed hole position, then casting concrete is extracted rigid member out before concrete final set or after final set, finally extracts flexible piece out and forms preformed hole; Or before concrete final set, extract rigid member out, after final set, extract flexible piece out.Extract out after rigid member, flexible piece loses support, can conveniently extract.
The beneficial effects of the utility model.
(1) adopt the pore-forming piece that the utility model proposes, can form difform preformed hole at concrete component, preformed hole rough surface, strengthens preformed hole surrounding concrete and is filled in concrete in preformed hole or the switching performance of mortar.
(2) adopt the pore-forming piece the utility model proposes can ensure the hole quality of concrete component preformed hole: when extract rigid member out before concrete final set time, due to the buffer action of flexible piece, can avoid collapse hole, damage hole wall concrete; If flexible piece is thicker, there is certain supporting role, can avoid collapse hole.If extract rigid member out after concrete final set, due to the buffer action of flexible piece, the concrete having hardened is less to rigid member constraint, can conveniently extract.
(3) adopt the method for the pore-forming piece making concrete component preformed hole the utility model proposes significantly different from prior art.Existing concrete hole creating technology generally need to be extracted pore-forming piece out before concrete final set, and hole quality is difficult to ensure.Adopt hole creating technology of the present utility model, can after concrete final set, extract pore-forming piece out, hole quality is good.
Brief description of the drawings
Fig. 1 is that pore-forming piece of the present utility model is made preformed hole schematic diagram.
Fig. 2 is the structural representation of pore-forming piece embodiment 1 in the utility model.
Fig. 3 is the structural representation of pore-forming piece embodiment 2 in the utility model.
Fig. 4 is the structural representation of pore-forming piece embodiment 3 in the utility model.
Fig. 5 is A-A schematic cross-section in Fig. 4.
Fig. 6 is the structural representation of pore-forming piece embodiment 4 in the utility model.
Fig. 7 is the structural representation of pore-forming piece embodiment 5 in the utility model.
Fig. 8 is the structural representation of pore-forming piece embodiment 6 in the utility model.
Fig. 9 is the structural representation of pore-forming piece embodiment 7 in the utility model.
Figure 10 is the structural representation of pore-forming piece embodiment 8 in the utility model.
Figure 11 is B-B schematic cross-section in Figure 10.
Figure 12 is C-C schematic cross-section in Figure 10.
Mark implication in accompanying drawing is: projection 6 concrete that the projection 5 flexible piece surfaces on 1 flexible piece 2 rigid member 3 separator 4 flexible piece surfaces are oppositely arranged.
Detailed description of the invention
Below in conjunction with accompanying drawing, the pore-forming piece the utility model proposes is described in detail.
The pore-forming piece that employing the utility model proposes is made concrete component preformed hole as Fig. 1.While making concrete component, place pore-forming piece in preformed hole position, pore-forming piece comprises the rigid member 2 at center and the flexible piece 1 of parcel rigid member, then casting concrete 6, before concrete 6 final set or extract rigid member 2 after final set out, finally extract flexible piece 1 out and form preformed hole.Or before concrete final set, extract rigid member 2 out, after final set, extract flexible piece 1 out and form preformed hole.
For the convenient rigid member of extracting out, between rigid member and flexible piece, contact-making surface is smooth; Or scribble lubricant between rigid member and flexible piece.Separator around rigid member also can be set between rigid member and flexible piece, as Fig. 4, Fig. 5, between rigid member 2 and flexible piece 1, separator 3 be set; Separator is made up of more than two or two rigid material, convenient extraction.
Described pore-forming piece profile is cylindricality, and length direction cross section is constant, as Fig. 2, Fig. 3, Fig. 4; Or pore-forming piece profile is taper, length direction diminishes gradually, as Fig. 6; Or pore-forming piece profile is spindle, length direction is small at both ends and big in the middle, as Fig. 7; Or many waveforms, length direction is wavy, as Fig. 8.The cross-sectional profile of pore-forming piece is circle or circular arc or ellipse or polygon or fold-line-shaped, or other shapes, can form difform preformed hole; In Fig. 2, the cross-sectional profile of pore-forming piece is polygon.Pore-forming piece profile variation, the general maintenance cylindricality of rigid member 2 or taper.
Rigid member 2 in pore-forming piece is cylindricality or taper, convenient extraction.Flexible piece outer surface is male and fomale(M&F), for example corrugated surface or groove shape face or helicoid or point-like male and fomale(M&F) or other on-plane surfaces, even surface is avoided on the preformed hole surface forming like this, increase with after water concrete in the inner or the switching performance of mortar.In Fig. 9, on flexible piece, there is projection 4.
In the time that concrete component particularly has two or more preformed holes in precast concrete, in order to increase the connection integrity between rear pouring concrete or mortar, can make regional area between different preformed holes be connected; By projection is set on flexible piece, allow the projection of adjacent flexible piece fit together, reach this technique effect; As Figure 10, Figure 11, Figure 12, flexible piece 1 surface of two adjacent pore-forming pieces is oppositely arranged projection 5, and projection 5 fits together, after casting concrete, Concrete Filled, around pore-forming piece, after extracting pore-forming piece out, can make regional area between adjacent preformed hole be connected.
Claims (8)
1. a pore-forming piece of making concrete preformed hole, is characterized in that, described pore-forming piece comprises the rigid member at center and the flexible piece of parcel rigid member.
2. the pore-forming piece of making concrete preformed hole according to claim 1, is characterized in that, described rigid member adopts metal or fibre reinforced composites or timber to make, and described flexible piece adopts rubber to make.
3. the pore-forming piece of making concrete preformed hole according to claim 1, is characterized in that, between described rigid member and flexible piece, contact-making surface is smooth; Or scribble lubricant between described rigid member and flexible piece; Or between described rigid member and flexible piece, have separator, described separator is around rigid member, smooth with rigid member contact-making surface.
4. the pore-forming piece of making concrete preformed hole according to claim 1, it is characterized in that, described pore-forming piece profile is cylindricality or taper or spindle or many ripples arc, and the cross-sectional profile of described pore-forming piece is circle or circular arc or ellipse or polygon or fold-line-shaped.
5. the pore-forming piece of making concrete preformed hole according to claim 1, is characterized in that, described rigid member is cylindricality or taper.
6. the pore-forming piece of making concrete preformed hole according to claim 1, is characterized in that, described flexible piece outer surface is male and fomale(M&F), and described male and fomale(M&F) is corrugated surface or groove shape face or helicoid or point-like male and fomale(M&F).
7. the pore-forming piece of making concrete preformed hole according to claim 1, it is characterized in that, in the time having two or more preformed holes and regional area to be connected in concrete component, described flexible piece has projection in the position corresponding with connected region, and the projection of adjacent flexible piece fits together.
8. the pore-forming piece of making concrete preformed hole according to claim 1, is characterized in that, described flexible piece is divided into two lobes or more than two lobes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420056935.7U CN203876019U (en) | 2014-01-29 | 2014-01-29 | Pore-forming member manufacturing preformed hole of precast concrete component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420056935.7U CN203876019U (en) | 2014-01-29 | 2014-01-29 | Pore-forming member manufacturing preformed hole of precast concrete component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203876019U true CN203876019U (en) | 2014-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420056935.7U Expired - Fee Related CN203876019U (en) | 2014-01-29 | 2014-01-29 | Pore-forming member manufacturing preformed hole of precast concrete component |
Country Status (1)
| Country | Link |
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| CN (1) | CN203876019U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109137750A (en) * | 2018-10-23 | 2019-01-04 | 南京工业大学 | A kind of concrete preformed hole production method |
| CN109457617A (en) * | 2018-11-01 | 2019-03-12 | 南京工业大学 | Spiral concrete preformed hole device and preformed hole production method |
| CN113605310A (en) * | 2021-08-06 | 2021-11-05 | 深圳市绿志新型建材研究院有限公司 | Ecological riverbed prefabricated slab and preparation method thereof |
-
2014
- 2014-01-29 CN CN201420056935.7U patent/CN203876019U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109137750A (en) * | 2018-10-23 | 2019-01-04 | 南京工业大学 | A kind of concrete preformed hole production method |
| CN109457617A (en) * | 2018-11-01 | 2019-03-12 | 南京工业大学 | Spiral concrete preformed hole device and preformed hole production method |
| CN109457617B (en) * | 2018-11-01 | 2024-04-12 | 南京工业大学 | Spiral concrete preformed hole device and preformed hole manufacturing method |
| CN113605310A (en) * | 2021-08-06 | 2021-11-05 | 深圳市绿志新型建材研究院有限公司 | Ecological riverbed prefabricated slab and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20160129 |
|
| EXPY | Termination of patent right or utility model |