CN204126094U - A kind of cast-in-place hollow slab of segmentation dislocation type anti-floating - Google Patents
A kind of cast-in-place hollow slab of segmentation dislocation type anti-floating Download PDFInfo
- Publication number
- CN204126094U CN204126094U CN201420587142.8U CN201420587142U CN204126094U CN 204126094 U CN204126094 U CN 204126094U CN 201420587142 U CN201420587142 U CN 201420587142U CN 204126094 U CN204126094 U CN 204126094U
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- China
- Prior art keywords
- obturator
- fixed band
- reinforcing bar
- lower floor
- floating
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Abstract
The utility model relates to a kind of cast-in-place hollow slab of segmentation dislocation type anti-floating, belongs to buildings in general structure field.This hollowcore slab comprises obturator (1), lower floor's reinforcing bar (3) and concrete (4), obturator (1) is positioned at above hollowcore slab lower floor reinforcing bar (3), permanently be embedded in concrete (4), it is characterized in that obturator (1) main material is lightweight foam material, spacer pad (5) is arranged at obturator (1) bottom, by anti-floating iron wire (6), lower floor's reinforcing bar (3) and template (7) are fixed together, fixed band (8) is nonmetal ribbon, fixed band cross section is flat pattern, the side that fixed band (8) walks around obturator is connected with lower floor's reinforcing bar (3) with top, by fixed band (8), obturator (1) and lower floor's reinforcing bar (3) are fixed together.The utility model has good economy and applicability, plays a driving role to the development of Building technology.
Description
(1) technical field
The utility model relates to a kind of cast-in-situ reinforced concrete hollow floor, especially a kind of cast-in-place hollow slab of segmentation dislocation type anti-floating, belongs to buildings in general structure field.
(2) background technology
At building field, along with large-span concrete structure is increasing, increasing floor adopts hollow floor structure technology.In hollow building cover field, the packing material adopted is also of a great variety, has several large series products such as high-strength cement (GRC) class, metal species, rubber or plastic products, but in use all there is obvious defect.GRC is fragile material, and the cylinder core be made up of GRC and casing are conducted oneself with dignity comparatively large, and water absorption rate is higher, easily cracked when withstanding shocks load and stacking weight.Metal bellows cost is higher, and foot-operated the rubbing during construction easily causes bellows seaming ftracture, carries out operation may burn hole if bellows is close in simultaneously electric, gas welding.Rubber-like packing material cost is higher; The intensity of plastic barrel core and casing product when wall is thinner is low, very easily damaged during construction; When wall is thicker, cost increases more.Above-mentioned material also has a common fault to be exactly be not easy fluting or boring above packing material in addition, and therefore in hollow building cover, pipeline is arranged inconvenient.
For now, in hollow building cover most competitiveness be the light-weight foam packing material that is representative with polyphenyl foam plastics.Lightweight foam material comprises polystyrene foam plastics, extruded sheet, Vestolit and polyurethane foam plastics.The topmost advantage of light-weight foam packing material is exactly fast from heavy and light speed of application; Secondly, because fluting or boring conveniently make pipeline construction also facilitate on material; Finally, the own characteristic of lightweight foam material also make to fill with this kind of material hollowcore slab insulation, heat insulation, sound insulation, good damping effect.
In hollow building cover, although packing material itself does not stress, packing material in use, must not affect reinforcing bar and concrete mechanical property.The location of packing material in floor is extremely important, and it comprises the location of horizontal direction and vertical direction.Nearly two kinds of modes in the conventional technology: (1) welds vertical tooth of a lot of year on horizontal location reinforcing bar, packing material is stuck between each perpendicular tooth, by fixing packing material by the mode of colligation silk fixed level reinforcing bar; But this kind construction method steel using amount is large, cost is high.(2) respectively with iron wire the reinforcing bar of each obturator and floor is held together and reaches the object of location; But this construction method engineering time is long, efficiency is low and labour cost is high.The mechanics feature of lightweight foam material be exactly intensity low, be easily out of shape, above-mentioned two kinds of modes are applicable to the product of the high GRC class of material self-strength and metal species.In the process of concreting, packing material will produce very large buoyancy, and in above-mentioned locate mode, no matter reinforcing bar or its cross section of iron wire are circular, and they contact with lightweight foam material is linear contact lay, therefore the pressure of contact point is very large, and reinforcing bar or iron wire must be absorbed in packing material.Then packing material is inevitable upwards drifts about, and makes hollowcore slab top flange thickness be less than design load; If packing material continues upwards to drift about, then steel bar stress may be made to be close to and to be even absorbed in packing material; Above-mentioned phenomenon will affect structural safety.For above-mentioned situation, I had once invented a kind of " a kind of grid of fixing filling tube and hollow building cover thereof " (ZL200520112551.3), grid is utilized to be together in parallel by multiple obturator, grid not only limits the horizontal-shift of packing material, and because grid can be prefabricated and improve site operation speed; But the obturator of a grid useable width less (being less than 500mm), when the effect of the larger grid of obturator size is just very poor.In order to control the upright position of packing material, the upper surface also proposing packing material in person arranges the scheme of reinforced hard, between obturator and floor top reinforcement, cushion block is installed during construction, is controlled the upright position of packing material by the position controlling top reinforcement.But, when floor top does not have top reinforcement or top reinforcement diameter less (being less than 8mm), such scheme just cannot realize, when top reinforcement and obturator upper surface clear distance comparatively large (being greater than 50mm), the implementation result of such scheme is very poor.
Therefore, for cast-in-place hollow slab, not only to solve the orientation problem of packing material, also will solve the anti-floating problem of packing material.In the prior art, the nearly three kinds of ways of anti-floating problem are solved.(1) tied up one end of iron wire on aforesaid horizontal location reinforcing bar, buoyancy is delivered to bottom template through template by the other end.The defect one of the program is not suitable for lightweight foam material, and two is that material cost is higher.(2) on packing material, place square steel, tie up on square steel by one end of iron wire, buoyancy is delivered to bottom template through template by the other end.The defect one of the program is not suitable for the hollowcore slab of thicker (being greater than 500mm) or the hollowcore slab of packing material horizontal dimension comparatively large (being greater than 700mm), no person upwards arches upward in the middle part of square steel under larger buoyancy, packing material is finally caused upwards to drift about, two is that material cost is relatively high, and three is that speed of application is relatively slow.(3) as described in the preceding paragraph, tie up on top reinforcement by one end of iron wire, buoyancy is delivered to bottom template through template by the other end.The defect of the program is that requirement is higher to top reinforcement rigidity requirement, generally needs top reinforcement diameter to be more than or equal to 12mm.Finally, the common drawback of above-mentioned three schemes is: when wearing anti-floating iron wire in template, substantially packing material has all been laid complete, even all colligation of the top reinforcement of floor is complete, at this moment no matter perforate or wear anti-floating iron wire from hole in template, can only carry out between the gap of adjacent obturator, operation plays more difficult and efficiency of construction is low.
In above-mentioned numerous technology, there is different shortcomings respectively, in this case, develop a kind of lightweight foam material, as packing material, packing material, effect, efficiency of construction is high, construction cost is low cast-in-place hollow slab are installed, become urgent problem in present hollow superstructure.
(3) summary of the invention
Exist for the hollow building cover using lightweight foam material as packing material in prior art, the floor, the efficiency of construction that are only applicable to top reinforcement are low, construction cost is high, the technical problem of the installation weak effect especially produced because packing material is easily out of shape, the purpose of this utility model is the cast-in-place hollow slab providing a kind of segmentation dislocation type anti-floating.
For achieving the above object, the technical solution adopted in the utility model is: the cast-in-place hollow slab providing a kind of segmentation dislocation type anti-floating, this hollowcore slab comprises obturator, lower floor's reinforcing bar and concrete, obturator is positioned at above hollowcore slab lower floor reinforcing bar, permanently be embedded in concrete, the main material of obturator is lightweight foam material, spacer pad is had bottom obturator, by anti-floating iron wire, lower floor's reinforcing bar and template are fixed together, fixed band is nonmetal ribbon, fixed band cross section is flat pattern, the width of fixed band is more than or equal to 5 with the ratio of thickness, fixed band width >=6mm, fixed band walks around the side of obturator and top and lower floor's bar connecting, by fixed band, obturator and lower floor's reinforcing bar are fixed together.Lightweight foam material comprises polystyrene foam plastics, extruded sheet, Vestolit and polyurethane foam plastics.Anti-floating mode by traditional two steps once changing segmented into, seems and adds workload, in fact substantially increase efficiency of construction by the utility model, and accounts for less and even do not account for the duration.The utility model first step anti-floating iron wire in the colligation point position of lower floor's reinforcing bar is arrangement according to lower floor reinforcing bar and determines, second step fixed band and lower floor's bar connecting point can only between adjacent obturators, and therefore these two points may not overlapping but dislocation.Fixed band is that nonmetal ribbon makes it softly closely can be wound around obturator, fixed band cross section is flat pattern, the width of fixed band is more than or equal to 5 with the ratio of thickness, fixed band width >=6mm, greatly can be reduced under buoyancy effect pressure between fixed band and obturator, owing to being face contact, only even the pressure that contacts with obturator of diameter group 20mm reinforcing bar is also little for 6mm wide fixed band pressure, add there is spacer pad bottom obturator, fixed band walks around the side of obturator and top and lower floor's bar connecting, by fixed band, obturator and lower floor's reinforcing bar are fixed together, therefore in the process of concreting, obturator can not because fixed band is embedded occurred level and vertical drift, the installation quality of obturator can well be ensured.And width 10mm polypropylene fixed band cost-per-meter is less than 1/50 of diameter 20mm reinforcing bar cost-per-meter, 1/3 of diameter 4mm iron wire cost, substitute reinforcing bar, square steel or iron wire with fixed band, while obtaining better technique effect, have fairly obvious economy.
Further, between the upper corner district and fixed band of obturator, install the pad that reduces pressure, every root fixed band has a joint at least at the upper position place of obturator.Upper corner district is the intersection of obturator side and upper surface, usually has broken line or camber line chamfering herein, also can not chamfering.When fixed band contacts with obturator, under buoyancy, the contact force in upper corner district is maximum, being in order to enlarge active surface, reducing the pressure on obturator, fixed band is not absorbed in obturator, ensureing the installation quality of obturator in installing decompression pad herein.The feature of fixed band to be spliced, and utilize special tool can apply the object that pulling force reaches pretension fixed band in connection procedure, and most effective at obturator upper operating, therefore the upper position place of obturator has a joint at least.
Further, fixed band is the ribbon of polyester fiber, polyethylene or polypropylene material.The general character of these three kinds of materials be intensity high, lightweight, easily bend.
Further, by by the mode of anti-floating iron wire together with fixture colligation bottom template, or by by the mode of anti-floating iron wire together with flitch colligation bottom template, lower floor's reinforcing bar and template are fixed together.
Further, the material of decompression pad is metal, plastics or hardboard, will reduce pressure pad string on fixed band by buckle, snap ring or gap.Decompression pad is the material having certain degree of hardness, decompression pad can be gone here and there on fixed band, first can to ensure in construction especially concreting time decompression pad can not positioning, secondly the work of decompression pad string on fixed band can be carried out in advance, need not complete at the scene, site operation speed can be improved like this.
Further, in the mode of kalamein sheet, the bending of the termination of fixed band is sealed or coupled together with parallel congruent manner by two sections of fixed bands.
Further, the termination of fixed band adopts metal hanger or link to be connected with between lower floor reinforcing bar, or adopts iron wire colligation to connect.
Further, spacer pad is directly placed on above template, spacer pad bottom template and obturator between, spacer pad is the block of cement mortar or marble material.Locating piece is to control the vertical position of obturator in floor.
Further, spacer pad bottom lower floor's reinforcing bar and obturator between, spacer pad is the bar of cement mortar, metal or plastic material.
After adopting such scheme, the utility model compared with prior art has following beneficial effect:
First, the utility model adopts lightweight foam material as the packing material of hollowcore slab, can reach that hollowcore slab is easy for installation from heavy and light, pipeline, hollowcore slab insulation, heat insulation, sound insulation, good damping effect.Secondly, this hollowcore slab can be applied to the floor without top reinforcement, has widened the range of application of such hollowcore slab.Again, the installation of filling material in cored slab and anti-floating are carried out in two steps, improve site operation speed.Finally, adopt cross section be that the fixed band of flat pattern fixes packing material, its installation be effective, speed of application soon and the cost of material is low.The utility model overcomes in prior art to be existed as the hollow building cover of packing material with lightweight foam material, the floor, the efficiency of construction that are only applicable to top reinforcement are low, construction cost is high, the technical problem of the installation weak effect especially produced because packing material is easily out of shape, the cast-in-place hollow slab of a kind of segmentation dislocation type anti-floating of the present utility model, there is good economy and applicability, the development of Building technology is played a driving role.
(4) accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is the cast-in-place hollow slab vertical cross section organigram of a kind of segmentation dislocation type of the utility model anti-floating;
Fig. 2 is hollowcore slab vertical cross section partial enlarged drawing;
Fig. 3 is plan view when having laid obturator in hollowcore slab;
Fig. 4 is that decompression pad is by the top view of buckle string on fixed band;
Fig. 5 is A-A sectional drawing in Fig. 4;
Fig. 6 is that decompression pad is by the top view of snap ring string on fixed band;
Fig. 7 is B-B sectional drawing in Fig. 6;
Fig. 8 is that decompression pad is by the top view of gap string on fixed band;
Fig. 9 and Figure 10 is C-C and D-D sectional drawing in Fig. 8 respectively;
Figure 11 with Figure 12 is the termination bending sealing of fixed band and parallel superimposed connection diagram respectively;
Figure 13, Figure 14 and Figure 15 are that fixed band termination adopts hook, the mode of link or iron wire colligation and lower floor's bar connecting schematic diagram respectively.
In figure: 1. obturator, 2. top reinforcement, 3. lower floor's reinforcing bar, 4. concrete, 5. spacer pad, 6. anti-floating iron wire, 7. template, 8. fixed band, 9. upper corner district, 10. reduce pressure pad, 11. joints, fixture bottom 12., flitch bottom 13., 14. buckles, 15. snap rings, 16. gap, 17. sheet metals, 18. hooks, 19. links, 20. iron wire colligations.
(5) detailed description of the invention
By reference to the accompanying drawings, the utility model realizes in such a way:
At Fig. 1, Fig. 2, in embodiment illustrated in fig. 3, a kind of cast-in-place hollow slab of segmentation dislocation type anti-floating, this hollowcore slab comprises obturator (1), lower floor's reinforcing bar (3) and concrete (4), obturator (1) is positioned at above hollowcore slab lower floor reinforcing bar (3), permanently be embedded in concrete (4), obturator (1) main material is lightweight foam material, spacer pad (5) is arranged at obturator (1) bottom, by anti-floating iron wire (6), lower floor's reinforcing bar (3) and template (7) are fixed together, fixed band (8) is nonmetal ribbon, fixed band cross section is flat pattern, the width of fixed band (8) is more than or equal to 5 with the ratio of thickness, fixed band width >=6mm, the side that fixed band (8) walks around obturator is connected with lower floor's reinforcing bar (3) with top, by fixed band (8), obturator (1) and lower floor's reinforcing bar (3) are fixed together.
Fig. 1, Fig. 2, embodiment illustrated in fig. 3 in, between the upper corner district (9) and fixed band (8) of obturator (1), install the pad (10) that reduces pressure, every root fixed band (8) has a joint (11) at least at the upper position place of obturator (1).
In Fig. 1-embodiment illustrated in fig. 15, fixed band (8) is polyester fiber, the ribbon of polyethylene or polypropylene material.
Fig. 1, embodiment illustrated in fig. 2 in, by the mode together with bottom fixture (12) colligation of anti-floating iron wire (6) and template (7), or by by the mode of anti-floating iron wire (6) together with template (7) bottom flitch (13) colligation, lower floor's reinforcing bar (3) and template (7) are fixed together.
In Fig. 4-embodiment illustrated in fig. 10, the material of decompression pad (10) is metal, plastics or hardboard, will reduce pressure pad (10) string on fixed band (8) by buckle (14), snap ring (15) or gap (16).
Figure 11, embodiment illustrated in fig. 12 in, with the mode of kalamein sheet (17) by the termination of fixed band (8) bending sealing or two sections of fixed bands (8) are coupled together with parallel congruent manner.
Figure 13, Figure 14, embodiment illustrated in fig. 15 in, the termination of fixed band (8) is connected with adopting metal hanger (18) or link (19) between lower floor's reinforcing bar (3), or adopts iron wire colligation (20) to connect.
In the embodiment depicted in figure 2, spacer pad (5) is directly placed on above template (6), spacer pad (5) is positioned between template (6) and obturator (1) bottom, the block that spacer pad (5) is cement mortar or marble material.
In the embodiment shown in fig. 1, spacer pad (5) is positioned between lower floor's reinforcing bar (3) and obturator (1) bottom, and spacer pad (5) is cement mortar, the bar of metal or plastic material.
Claims (9)
1. the cast-in-place hollow slab of a segmentation dislocation type anti-floating, this hollowcore slab comprises obturator (1), lower floor's reinforcing bar (3) and concrete (4), obturator (1) is positioned at above hollowcore slab lower floor reinforcing bar (3), permanently be embedded in concrete (4), it is characterized in that obturator (1) main material is lightweight foam material, spacer pad (5) is arranged at obturator (1) bottom, by anti-floating iron wire (6), lower floor's reinforcing bar (3) and template (7) are fixed together, fixed band (8) is nonmetal ribbon, fixed band cross section is flat pattern, the width of fixed band (8) is more than or equal to 5 with the ratio of thickness, fixed band width >=6mm, the side that fixed band (8) walks around obturator is connected with lower floor's reinforcing bar (3) with top, by fixed band (8), obturator (1) and lower floor's reinforcing bar (3) are fixed together.
2. the cast-in-place hollow slab of a kind of segmentation dislocation type anti-floating according to claim 1, it is characterized in that installing the pad (10) that reduces pressure between the upper corner district (9) and fixed band (8) of obturator (1), every root fixed band (8) has a joint (11) at least at the upper position place of obturator (1).
3. the cast-in-place hollow slab of a kind of segmentation dislocation type anti-floating according to claim 1, is characterized in that fixed band (8) is polyester fiber, the ribbon of polyethylene or polypropylene material.
4. the cast-in-place hollow slab of a kind of segmentation dislocation type anti-floating according to claim 1, it is characterized in that by the mode together with bottom fixture (12) colligation of anti-floating iron wire (6) and template (7), or by by the mode of anti-floating iron wire (6) together with template (7) bottom flitch (13) colligation, lower floor's reinforcing bar (3) and template (7) are fixed together.
5. the cast-in-place hollow slab of a kind of segmentation dislocation type anti-floating according to claim 1, it is characterized in that reduce pressure pad (10) material be metal, plastics or hardboard, by buckle (14), snap ring (15) or gap (16) will reduce pressure pad (10) go here and there on fixed band (8).
6. the cast-in-place hollow slab of a kind of segmentation dislocation type anti-floating according to claim 1, is characterized in that in the mode of kalamein sheet (17), the bending of the termination of fixed band (8) being sealed or two sections of fixed bands (8) being coupled together with parallel congruent manner.
7. the cast-in-place hollow slab of a kind of segmentation dislocation type anti-floating according to claim 1, it is characterized in that between the termination of fixed band (8) with lower floor's reinforcing bar (3), adopting metal hanger (18) or link (19) to be connected, or adopt iron wire colligation (20) to connect.
8. the cast-in-place hollow slab of a kind of segmentation dislocation type anti-floating according to claim 1, it is characterized in that spacer pad (5) is directly placed on above template (6), spacer pad (5) is positioned between template (6) and obturator (1) bottom, the block that spacer pad (5) is cement mortar or marble material.
9. the cast-in-place hollow slab of a kind of segmentation dislocation type anti-floating according to claim 1, it is characterized in that spacer pad (5) is positioned between lower floor's reinforcing bar (3) and obturator (1) bottom, spacer pad (5) is cement mortar, the bar of metal or plastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420587142.8U CN204126094U (en) | 2014-10-13 | 2014-10-13 | A kind of cast-in-place hollow slab of segmentation dislocation type anti-floating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420587142.8U CN204126094U (en) | 2014-10-13 | 2014-10-13 | A kind of cast-in-place hollow slab of segmentation dislocation type anti-floating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204126094U true CN204126094U (en) | 2015-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420587142.8U Withdrawn - After Issue CN204126094U (en) | 2014-10-13 | 2014-10-13 | A kind of cast-in-place hollow slab of segmentation dislocation type anti-floating |
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| Country | Link |
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| CN (1) | CN204126094U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234287A (en) * | 2014-10-13 | 2014-12-24 | 徐焱 | Segmented stagger anti-floating cast-in-situ hollow plate |
| CN109914667A (en) * | 2019-03-21 | 2019-06-21 | 中北大学 | A kind of overlapping prefabricated hollow floor and preparation method thereof |
-
2014
- 2014-10-13 CN CN201420587142.8U patent/CN204126094U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234287A (en) * | 2014-10-13 | 2014-12-24 | 徐焱 | Segmented stagger anti-floating cast-in-situ hollow plate |
| CN109914667A (en) * | 2019-03-21 | 2019-06-21 | 中北大学 | A kind of overlapping prefabricated hollow floor and preparation method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150128 Effective date of abandoning: 20170510 |
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| AV01 | Patent right actively abandoned |