CN102031839B - hollow core slab for combined use of filling rods and filling boxes - Google Patents
hollow core slab for combined use of filling rods and filling boxes Download PDFInfo
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- CN102031839B CN102031839B CN2010105605534A CN201010560553A CN102031839B CN 102031839 B CN102031839 B CN 102031839B CN 2010105605534 A CN2010105605534 A CN 2010105605534A CN 201010560553 A CN201010560553 A CN 201010560553A CN 102031839 B CN102031839 B CN 102031839B
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 27
- 239000000945 filler Substances 0.000 claims description 84
- 239000004567 concrete Substances 0.000 claims description 20
- 230000002787 reinforcement Effects 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 210000002435 tendon Anatomy 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 230000003111 delayed effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 6
- 230000035939 shock Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 9
- 238000010008 shearing Methods 0.000 description 8
- 238000011065 in-situ storage Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 230000010181 polygamy Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The invention relates to a hollow core slab for the combined use of filling rods and filling boxes, and belongs to the field of construction of the common buildings. The hollow slab is a two-way slab and is divided into four peripheral hollow regions (1) and one central hollow region (2) on the plane, wherein filling rod combined blocks (3) and filling boxes (4) are embedded in the peripheral hollow regions (1) and the central hollow region (2) respectively; the central hollow region (2) is enclosed by four boundaries (7); each peripheral hollow region (1) is enclosed by one support edge (5), two oblique lines (6) and one boundary (7); each filling rod combined block (3) faces the direction vertical to the support edge (5) of the peripheral hollow region (1) where the filling rod combined block (3) is; and each filling rod combined block (3) arranged on the oblique line (6) faces the direction vertical to any one of support edge (5) adjacent to the oblique line (6). The hollow slab has large span and light weight in hollow floor system, has high reliability, shock resistance and crack resistance in a structure, and has high economy and applicability.
Description
(1) technical field
The present invention relates to a kind of reinforced concrete hollow floor structure, especially a kind of filler rod mixes the hollowcore slab that uses with filling box, belongs to buildings in general structure field.
(2) background technology
At building field, along with the large-span concrete structure is increasing, increasing floor adopts the hollow building cover structure technology.Sometimes in order to reduce dead load or to strengthen concrete insulation, heat insulation, sound insulation, damping effect, need place some lightweight fillers in the concrete the inside.Come the instead of part concrete can not influence the stress performance of structure basically with lightweight filler, but the deadweight that can alleviate structure greatly.
Relate to the packing material in the hollowcore slab, mainly contain two big types of filler rod (comprise and fill pipe) and filling box.The section configuration of filler rod is circle or polygon or other composite figure, and the ratio of its section maximum size and minimum dimension is general≤2, the ratio of its planar dimension length and width is general>=and 2.The section configuration of filling box is rectangle and rectangle corner cut or chamfering, and its flat shape is generally square, also can be rectangle, usually ratio≤1.5 of planar dimension length and width.In the prior art; The hollowcore slab structure that forms with filler rod has: " concrete thin-wall cylindrical shell member " (ZL91031113.3), " in-situ deposited prestressed hollow reinforced concrete roof and job practices thereof " (ZL00113548.1), " the profiled-cross-section light material is filled the prestressed in-situ depositing plate " (ZL03236988.3), these technological essential characteristics are that filler rod is arranged towards a direction in floor; These arrangements are suitable for one-way slabs.I once propose " by the prestressed concrete cast-in-place hollow slab of light material assembled unit filling " (ZL03146341.X); Filler rod is arranged by the bigger direction of moment of flexure in floor; The stressed of this model is more reasonable; But, implement the comparison difficulty because will calculate the both direction moment of flexure value at each position in the plate.To two-way slab; I proposed respectively again afterwards " a kind of cast-in-situ concrete hollow slab and job practices thereof that has rib " (ZL200710111226.9), " a kind of hollowcore slab of vertical and horizontal arrangement permanent module and job practices thereof " (ZL200710123517.X) with " a kind of hollowcore slab of mounted permanent sectional pattern member and implementation method thereof " (ZL200710111081.2); In these 3 technology; Filler rod is towards consistent with the direction of transfer of shearing in its present position plate, and engineering construction gets up more convenient like this.
In the prior art, also has numerous hollowcore slab structural system with filling box formation.For example, the thrifty academician of mark " the two-way hollow big plate of steel concrete shear connector formula " (ZL97200102.6), " steel concrete laced beam and close girt strip double-grid girder construction " (ZL03249445.9); Mr.'s Qiu Zeyou " a kind of steel bar reinforced hollow concrete roof cast-in-situs " (ZL03118130.9), " a kind of cast-in-place concrete cored " (ZL200610167919.5); Mr.'s Wang Benmiao " a kind of building cast-in-situ floor " (ZL200810133186.2), " a kind of cast-in-situ open-web floor hollow body " (ZL200910312627.X).
The hollow rate that forms hollowcore slab with filling box obviously will surpass the hollowcore slab that forms with filler rod; But say from mechanics principle; Exactly because the less relatively then concrete sectional area of filler rod hollow rate is relatively large, so be greater than filling box hollowcore slab, the especially shear resistance of same thickness along the supporting capacity of filler rod direction hollowcore slab; Certainly, be more weak perpendicular to the supporting capacity of filler rod direction hollowcore slab especially shear resistance.For general two-way slab, maximum along the peripheral shearing of bearing, at this moment peripheral if adopt filling box along bearing, in order to remedy the deficiency of shear resistance, to adopt 2 kinds of measures usually; A kind of is to strengthen the solid rib width of concrete; The 2nd, polygamy shearing resistance stirrup.Adopt first kind of mode will reduce the structure of hollow rate undoubtedly, adopt the second way then will increase cost.
In sum, in the prior art, also do not have a kind of technology can make full use of the advantage of filler rod and filling box, overcome its shortcoming, form that a kind of hollow rate is big, the bidirectional stress hollow building cover structure of reasonable stress.Therefore, developing a kind of filler rod mixes the hollowcore slab that uses and has become current urgent problem with filling box.
(3) summary of the invention
In the prior art; Exist low, the stressed unreasonable or structural cost of hollow building cover hollow rate than problems such as height; The object of the present invention is to provide a kind of filler rod to mix the hollowcore slab that uses with filling box; This hollow building cover reasonable stress, and hollow rate is big, cost is lower, and the while is construction install convenience again.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is: provide a kind of filler rod to mix the hollowcore slab that uses with filling box, this hollowcore slab is a two-way slab; From the plane, plate is divided into 4 peripheral hollow sections and a central hollow district; Filler rod combination block and filling box landfill respectively is characterized in that 4 oblique lines that become 45 degree with adjacent support edges are made in four bights of slave plate in peripheral hollow section and central hollow district, remake 4 and the corresponding line of demarcation of support edges; Line of demarcation and oblique line intersect; Article 4, the line of demarcation surrounds the zone for the central hollow district, and perhaps 4 lines of demarcation and 2 or 4 oblique lines surround the central hollow district, and 1 support edges, 2 oblique lines and 1 zone that the line of demarcation surrounds are 1 peripheral hollow section; In the filler rod combination block length direction of filler rod be it towards; The filler rod combination block towards vertical with the support edges of its place periphery hollow section, be arranged in the filler rod combination block of oblique line position, it is towards vertical with any 1 adjacent support edges of this oblique line.
The invention is characterized in from section and see, filler rod combination block and filling box between top reinforcement and lower floor's reinforcing bar, permanent being embedded in the concrete.
The invention is characterized in and be characterised in that the line of demarcation is straight line or broken line.
The invention is characterized in that the position, line of demarcation is provided with the interblock rib; Be provided with the interblock rib between adjacent filler rod combination block and filler rod combination block, filler rod combination block and filling box, filling box and the filling box in the hollowcore slab; The interblock rib width is 50-300mm; Per pass interblock rib is connected with form of straight lines 2 support edges that plate is relative, and rib is parallel to each other perhaps orthogonal between different masses.
The invention is characterized in that the filler rod combination block is combined by 2 or 2 above filler rods and grid or connecting reinforcement, in each filler rod combination block, be provided with internal-rib between the filler rod, interior rib width is 40-120mm.
The invention is characterized in the interblock rib and dispose presstressed reinforcing steel that used presstressed reinforcing steel is unbonded prestressing tendon or bonded prestressed tendon or delayed bonding prestressed tendon.
The invention is characterized in that filler rod is hollow section or solid bar, filling box is hollow case or solid case.
A kind of filler rod of the present invention mixes the hollowcore slab that uses with filling box implementation method is: lower floor's reinforcing bar of colligation plate; From the plane, plate is divided into 4 peripheral hollow sections and a central hollow district; Landfill is in peripheral hollow section and central hollow district respectively for filler rod combination block and filling box, and 4 oblique lines that become 45 degree with adjacent support edges are made in four bights of slave plate, remake 4 corresponding lines of demarcation of support edges and oblique line and intersect; Article 4, the line of demarcation surrounds the regional central hollow district that is; Perhaps 4 lines of demarcation and 2 or 4 oblique lines surround the central hollow district, and 1 support edges, 2 oblique lines and 1 line of demarcation surround the zone and be peripheral hollow section, the filler rod combination block towards vertical with the support edges of its place periphery hollow section; The filler rod combination block that is arranged in the oblique line position is towards vertical with any 1 adjacent support edges of this oblique line; The top reinforcement of colligation plate, concreting, stripping.
After adopting such scheme, the present invention compared with prior art has following beneficial effect:
Make full use of among the present invention in the hollowcore slab that club-shaped material fills,, will fill excellent combination block and be arranged in the bigger zone of shearing along the bigger characteristics of filler rod direction shear resistance, and filler rod with its adjacent support edges vertical; And at the less middle section of shearing, fill with the filling box that can obtain big hollow rate.This scheme is compared with the hollowcore slab that general pure club-shaped material is filled, and hollow rate is bigger, and it is lighter to conduct oneself with dignity, and can save more concrete and reinforcing bar.This programme can not take place in the hollowcore slab that pure casing fills because of the not enough situation that needs increasing solid rib width of concrete or polygamy shearing resistance stirrup of shear resistance yet; Therefore the hollow rate of hollowcore slab of the present invention can not filled the low of hollowcore slab than pure casing, reduces shearing resistance stirrup consumption and then is inevitable.Therefore, behind employing this programme, satisfying under the prerequisite of structure stress, can improve the hollow rate of hollowcore slab to greatest extent, can guarantee concrete pouring quality again, construction and installation simultaneously are all very convenient.This hollow building cover span is big, in light weight, and reliability of structure, shock resistance, crack resistance are also better.The present invention has excellent economy and applicability, and the development of Building technology is played a driving role.
(4) description of drawings
Below in conjunction with accompanying drawing the present invention is further specified.
Fig. 1 is that a kind of filler rod of the present invention mixes the hollowcore slab plane subregion sketch map that uses with filling box.
Fig. 2 is a packing material layout plan in the hollowcore slab of the present invention.
Fig. 3, Fig. 4 are respectively A-A and B-B cross-section structure sketch mapes among Fig. 2.
Fig. 5, Fig. 6 are respectively hollowcore slab plane subregion sketch map and packing material layout plans when surrounding the central hollow district by 4 lines of demarcation and 2 or 4 oblique lines among the present invention.
Fig. 7, Fig. 8 are respectively hollowcore slab plane subregion sketch map and packing material layout plans when the part line of demarcation is broken line among the present invention.
Fig. 9 be among the present invention interblock rib and support edges concern sketch map.
Figure 10 is a filler rod combination block plan view among the present invention.
Figure 11, Figure 12 are respectively C-C and D-D cross-section structure sketch mapes when filler rod is made up by grid among the present invention.
Figure 13, Figure 14 are respectively C-C and D-D cross-section structure sketch mapes when filler rod is made up by connecting reinforcement among the present invention.
Among the figure: 1. peripheral hollow section, 2. central hollow district, 3. filler rod combination block, 4. filling box, 5. support edges, 6. oblique line; 7. line of demarcation, 8. top reinforcement, 9. lower floor's reinforcing bar, 10. concrete, 11. filler rods; 12. grid, 13. connecting reinforcements, 14. interblock ribs, 15. internal-ribs, 16. presstressed reinforcing steels.
(5) specific embodiment
The present invention realizes in such a way:
Fig. 1, embodiment illustrated in fig. 2 in; A kind of filler rod mixes the hollowcore slab that uses with filling box; This hollowcore slab is a two-way slab, from the plane, plate is divided into 4 peripheral hollow sections (1) and a central hollow district (2), and filler rod combination block (3) and filling box (4) difference landfill are in peripheral hollow section (1) and central hollow district (2); 4 oblique lines (6) that become 45 degree with adjacent support edges (5) are made in four bights that it is characterized in that slave plate; Remake 4 and the corresponding line of demarcation of support edges (5) (7), intersect with oblique line (6) line of demarcation (7), and 4 lines of demarcation (7) surround the zone and are central hollow district (2); Article 1, support edges (5), 2 oblique lines (6) are 1 peripheral hollow section (1) with the zone that surrounds, 1 line of demarcation (7); Filler rod combination block (3) towards vertical with the support edges (5) of its place periphery hollow section (1), be arranged in the filler rod combination block (3) of oblique line (6) position, it is towards vertical with any 1 adjacent support edges (5) of this oblique line (6).In this programme, so-called oblique line (6) is not a material object clear and definite in the engineering with line of demarcation (7), but a kind of boost line in the design and construction.During practical implementation; In order to improve the structure of hollow rate; Should increase central hollow district area as far as possible, when the shearing resistance that only relies on the concrete section area of interblock rib (14) just can satisfy structure when a certain regional area requires, just should this zone be incorporated in the central hollow district; Otherwise, incorporate this zone into peripheral hollow section.
Fig. 3, embodiment illustrated in fig. 4 in, see that from section filler rod combination block (3) and filling box (4) are positioned between top reinforcement (8) and the lower floor's reinforcing bar (9), permanent being embedded in the concrete (10).
Fig. 5, embodiment illustrated in fig. 6 in, 4 lines of demarcation (7) surround central hollow district (2) with 2 or 4 oblique lines (6).
Fig. 1, embodiment illustrated in fig. 2 in, line of demarcation (7) are straight line; Fig. 7, embodiment illustrated in fig. 8 in, line of demarcation (7) broken line.
Fig. 2, Fig. 6, Fig. 8, embodiment illustrated in fig. 9 in; Position, line of demarcation (7) is provided with interblock rib (14); Be provided with interblock rib (14) between adjacent filler rod combination block (3) and filler rod combination block (3), filler rod combination block (3) and filling box (4), filling box (4) and the filling box (4) in the hollowcore slab; Interblock rib (14) width is 50-300mm, and per pass interblock rib (14) is connected with form of straight lines 2 support edges (5) that plate is relative, and rib between different masses (14) is parallel to each other or is orthogonal.
In Figure 10-embodiment illustrated in fig. 14; Filler rod combination block (3) is combined by 2 or 2 above filler rods (11) and grid (12) or connecting reinforcement (13); In each filler rod combination block (3), be provided with internal-rib (15) between the filler rod (11), internal-rib (15) width is 40-120mm.
Fig. 3, embodiment illustrated in fig. 4 in, configuration presstressed reinforcing steel (16) in the interblock rib (14), used presstressed reinforcing steel (16) is unbonded prestressing tendon or bonded prestressed tendon or delayed bonding prestressed tendon.
In Fig. 3, Figure 10-embodiment illustrated in fig. 14, filler rod (11) is hollow section or solid bar, and filling box (4) is hollow case or solid case.
A kind of filler rod of the present invention mixes the hollowcore slab that uses with filling box implementation method is: lower floor's reinforcing bar (9) of colligation plate; From the plane, plate is divided into 4 peripheral hollow sections (1) and a central hollow district (2); Filler rod combination block (3) and filling box (4) difference landfill are in peripheral hollow section (1) and central hollow district (2); 4 oblique lines (6) that become 45 degree with adjacent support edges (5) are made in four bights of slave plate; Remake 4 and intersect with the corresponding line of demarcation of support edges (5) (7) and oblique line (6), 4 lines of demarcation (7) surround the zone and are central hollow district (2), and perhaps 4 lines of demarcation (7) and 2 or 4 oblique lines (6) surround central hollow district (2); Article 1, support edges (5), 2 oblique lines (6) surround the regional peripheral hollow section (1) that is with 1 line of demarcation (7); Filler rod combination block (3) towards vertical with the support edges (5) of its place periphery hollow section (1), the filler rod combination block (3) that is arranged in oblique line (6) position is towards vertical with any 1 adjacent support edges (5) of this oblique line (6), the top reinforcement of colligation plate (8); Concreting (10), stripping.
Claims (8)
1. a filler rod mixes the hollowcore slab that uses with filling box; This hollowcore slab is a two-way slab; From the plane, plate is divided into 4 peripheral hollow sections (1) and a central hollow district (2), filler rod combination block (3) and filling box (4) landfill respectively is characterized in that 4 oblique lines (6) that become 45 degree with adjacent support edges (5) are made in four bights of slave plate in peripheral hollow section (1) and central hollow district (2); Remake 4 and the corresponding line of demarcation of support edges (5) (7); Line of demarcation (7) and oblique line (6) intersect, and 4 lines of demarcation (7) surround the zone and are central hollow district (2), and perhaps 4 lines of demarcation (7) and 2 or 4 oblique lines (6) surround central hollow district (2); Article 1, support edges (5), 2 oblique lines (6) are 1 peripheral hollow section (1) with the zone that surrounds, 1 line of demarcation (7); Filler rod combination block (3) towards vertical with the support edges (5) of its place periphery hollow section (1), be arranged in the filler rod combination block (3) of oblique line (6) position, it is towards vertical with any 1 adjacent support edges (5) of this oblique line (6).
2. a kind of filler rod according to claim 1 mixes the hollowcore slab that uses with filling box; It is characterized in that seeing from section; Filler rod combination block (3) and filling box (4) are positioned between top reinforcement (8) and the lower floor's reinforcing bar (9), permanent being embedded in the concrete (10).
3. a kind of filler rod according to claim 1 mixes the hollowcore slab that uses with filling box, it is characterized in that line of demarcation (7) is straight line or broken line.
4. a kind of filler rod according to claim 1 mixes the hollowcore slab that uses with filling box; It is characterized in that position, line of demarcation (7) is provided with interblock rib (14); Be provided with interblock rib (14) between adjacent filler rod combination block (3) and filler rod combination block (3), filler rod combination block (3) and filling box (4), filling box (4) and the filling box (4) in the hollowcore slab; Interblock rib (14) width is 50-300mm; Per pass interblock rib (14) is connected with form of straight lines 2 support edges (5) that plate is relative, and rib between different masses (14) is parallel to each other or is orthogonal.
5. a kind of filler rod according to claim 1 mixes the hollowcore slab that uses with filling box; It is characterized in that filler rod combination block (3) is combined by 2 or 2 above filler rods (11) and grid (12) or connecting reinforcement (13); In each filler rod combination block (3); Be provided with internal-rib (15) between the filler rod (11), internal-rib (15) width is 40-120mm.
6. a kind of filler rod according to claim 1 mixes the hollowcore slab that uses with filling box; It is characterized in that configuration presstressed reinforcing steel (16) in the interblock rib (14), used presstressed reinforcing steel (16) is unbonded prestressing tendon or bonded prestressed tendon or delayed bonding prestressed tendon.
7. a kind of filler rod according to claim 1 mixes the hollowcore slab that uses with filling box, it is characterized in that filler rod (11) is hollow section or solid bar, and filling box (4) is hollow case or solid case.
8. a kind of filler rod according to claim 1 mixes the implementation method of the hollowcore slab that uses with filling box; The lower floor's reinforcing bar (9) that it is characterized in that the colligation plate; From the plane, plate is divided into 4 peripheral hollow sections (1) and a central hollow district (2); Landfill is in peripheral hollow section (1) and central hollow district (2) respectively for filler rod combination block (3) and filling box (4), and 4 oblique lines (6) that become 45 degree with adjacent support edges (5) are made in four bights of slave plate, remake 4 crossing with corresponding line of demarcation of support edges (5) (7) and oblique line (6); Article 4, line of demarcation (7) surround the regional central hollow district (2) that is; Perhaps 4 lines of demarcation (7) surround central hollow district (2) with 2 or 4 oblique lines (6), and 1 support edges (5), 2 oblique lines (6) surround the zone with 1 line of demarcation (7) and are peripheral hollow section (1), filler rod combination block (3) towards vertical with the support edges (5) of the peripheral hollow section in its place (1); The filler rod combination block (3) that is arranged in oblique line (6) position is towards vertical with any 1 adjacent support edges (5) of this oblique line (6); The top reinforcement of colligation plate (8), concreting (10), stripping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105605534A CN102031839B (en) | 2010-11-26 | 2010-11-26 | hollow core slab for combined use of filling rods and filling boxes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105605534A CN102031839B (en) | 2010-11-26 | 2010-11-26 | hollow core slab for combined use of filling rods and filling boxes |
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| Publication Number | Publication Date |
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| CN102031839A CN102031839A (en) | 2011-04-27 |
| CN102031839B true CN102031839B (en) | 2012-01-25 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121290B (en) * | 2011-01-25 | 2012-09-05 | 徐焱 | Hollow core slab mixed with filling rods and exposed filling boxes |
| CN104453049B (en) * | 2014-11-26 | 2017-05-17 | 徐焱 | Hollow one-way plate with filling rods and filling boxes mixed for use |
| CN104453044B (en) * | 2014-12-05 | 2017-01-18 | 徐焱 | Hollow slab suitable for frame core tube structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060117593A (en) * | 2005-05-11 | 2006-11-17 | 오은영 | Eco-friendly composition and an eco-friendly assembly panel manufactured using the eco-friendly composition as a raw material and the interlayer floor structure and the building comprising the eco-friendly floor structure, characterized in that constructed using the eco-friendly composition or the eco-friendly assembly panel |
| CN101100884A (en) * | 2007-07-02 | 2008-01-09 | 徐焱 | Hollow plate for vertical and horizontal arrangement permanent module and construction method thereof |
| CN101560804A (en) * | 2009-05-19 | 2009-10-21 | 贵州皆盈科技开发有限公司 | Composite floor structure |
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2010
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060117593A (en) * | 2005-05-11 | 2006-11-17 | 오은영 | Eco-friendly composition and an eco-friendly assembly panel manufactured using the eco-friendly composition as a raw material and the interlayer floor structure and the building comprising the eco-friendly floor structure, characterized in that constructed using the eco-friendly composition or the eco-friendly assembly panel |
| CN101100884A (en) * | 2007-07-02 | 2008-01-09 | 徐焱 | Hollow plate for vertical and horizontal arrangement permanent module and construction method thereof |
| CN101560804A (en) * | 2009-05-19 | 2009-10-21 | 贵州皆盈科技开发有限公司 | Composite floor structure |
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Application publication date: 20110427 Assignee: Xi'an Jing Ning Building Materials Technology Co., Ltd. Assignor: Xu Yan Contract record no.: 2012610000155 Denomination of invention: hollow core slab for combined use of filling rods and filling boxes Granted publication date: 20120125 License type: Exclusive License Record date: 20121023 |
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