CN107190895A - A kind of compound precast floor slab and preparation method thereof - Google Patents
A kind of compound precast floor slab and preparation method thereof Download PDFInfo
- Publication number
- CN107190895A CN107190895A CN201710389254.0A CN201710389254A CN107190895A CN 107190895 A CN107190895 A CN 107190895A CN 201710389254 A CN201710389254 A CN 201710389254A CN 107190895 A CN107190895 A CN 107190895A
- Authority
- CN
- China
- Prior art keywords
- obturator
- floor slab
- ribs
- precast floor
- compound precast
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims description 9
- 238000009413 insulation Methods 0.000 claims abstract description 15
- 230000000694 effects Effects 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 21
- 239000004567 concrete Substances 0.000 claims description 11
- 230000002787 reinforcement Effects 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000011381 foam concrete Substances 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 3
- 239000010440 gypsum Substances 0.000 claims description 3
- 229910052602 gypsum Inorganic materials 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000009417 prefabrication Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000746 body region Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
- E04B5/04—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement
- E04B5/046—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement with beams placed with distance from another
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
- E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
- E04C2/288—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material
- E04C2/2885—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material with the insulating material being completely surrounded by, or embedded in, a stone-like material, e.g. the insulating material being discontinuous
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/38—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure with attached ribs, flanges, or the like, e.g. framed panels
- E04C2/382—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure with attached ribs, flanges, or the like, e.g. framed panels with a frame of concrete or other stone-like substance
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Floor Finish (AREA)
Abstract
The invention belongs to building engineering field, be for existing precast floor slab cost it is high, from great, fabrication and installation complexity etc. is not enough, and there is provided a kind of fabrication and installation are convenient, lightweight, low cost compound precast floor slab.A kind of compound precast floor slab, the floor has at least included the obturator of insulation and carrying effect；Play the ribs of main carrying in obturator, wherein the ribs is prefabricated into an overall structure with obturator.Also include the panel located at floor one side and ribs integral structure, obturator is in close contact with panel.The present invention can be used for one-way slabs or two-way slab；Hole can be set when needed and the floor of various outer contour shapes is adapted to, big plate is assembled into after being lifted after being made with piecemeal；The present invention can both be adapted to small span and also be adapted for large-span situation.Rational in infrastructure, lightweight, fabrication and installation convenience of the invention, economy, insulation and sound insulation property are good.
Description
Technical field
The invention belongs to building engineering field, more particularly to a kind of compound precast floor slab and preparation method thereof.
Background technology
Prefabrication meets the requirement of building industrialization and environmental protection, particularly China's green building and building
Industrialized industrial policy, to prefabrication, its demand is increasing.Prefabricated slab is prefabrication
One of main contents.
Existing precast floor slab mainly has overlapping reinforced concrete floor, divides into the steel bar truss floor support plate of profiled sheet, this
Two kinds of forms are both needed to cast-in-situ steel reinforced concrete, and the floor that completes of constructing is from great, and it is small to adapt to span, floor insulation and sound insulation
Poor performance, construction costs is high.
China Patent Publication No. is that CN102787692A discloses a kind of full prefabricated hollow floor, belongs to architectural engineering technology
Field, is a kind of hollow or filling with light material prefabricated hollow floor, and prefabricated hollow floor need to be connected with the Liang Qiang on its periphery.
Its principal character has：1. upper and lower panel is set simultaneously；The real rib effect is not specified in real rib, patent 2. being set between panel, according to
The principle real rib effect should be collaboration upper and lower panel work；3. hollow or filling with light material purpose is mitigation member dead weight；4 is pre-
The bearing capacity of floor processed is provided mainly by upper and lower panel.The patent features described above need to exist simultaneously, and its essence is a kind of hollow building
Board member.
China Patent Publication No. is that CN106351373A discloses a kind of lattice type prefabricated heat insulating and sound insulating floor, belongs to building knot
Structure insulation integrated technology field, is a kind of layering battenboard, can be used as the prefabricated board and light floor of laminated floor slab.
Its principal character has：1. upper and lower panel is set simultaneously；2. upper and lower panel each sets lattice rib, the lattice rib of upper and lower panel is not straight
Contact connection, the effect of lattice rib should be rigidity and intensity for reinforced panel；3. by setting lattice between upper and lower panel
Post collaboration upper and lower panel works simultaneously；4. packing material effect is heat insulating and sound insulating between upper and lower panel；5. the carrying of precast floor slab
The main top lower panel of power is provided.The patent features described above need to exist simultaneously, and its essence is a kind of sandwich floor slab component.
China Patent Publication No. is that CN102787692A, China Patent Publication No. are that CN106351373A both patents are public
The floor opened belongs to full prefabricated hollow floor, big with bearing capacity, and adaptation floor span is big, lightweight advantage, but this
Two kinds of floors are respectively provided with making, install the high shortcoming of complicated, cost.
The content of the invention
The present invention seeks to for existing precast floor slab cost it is high, from great, fabrication and installation complexity etc. is not enough, and there is provided one
Plant convenient, lightweight fabrication and installation, low cost, the compound precast floor slab with self-heat conserving effect and good sound insulation property.
The present invention is achieved by the following technical solution：
A kind of compound precast floor slab, the floor has at least included the obturator of insulation and carrying effect；In obturator
Play the ribs of main carrying, wherein the ribs is prefabricated into an overall structure with obturator.Wherein ribs provides building
The main total bearing capacity of plate pre-erection, obturator can bear to directly act on the load on its surface, and by imposed load
Scattered to be delivered on ribs, the now filling uses the light material with some strength to make, and has insulation and bearing capacity concurrently
Effect；When obturator is not subject to imposed load, obturator main function is insulation, and its intensity requirement can be reduced.
Also include the panel located at floor at least one side with ribs integral structure, described obturator and panel is close
Contact.The surface that panel can be arranged as required in floor upper surface or lower surface is set.Between obturator and panel
Close contact prevents obturator from damaging.The main purpose of upper table faceplate panels or lower surface panel is set to improve ribs and filling
The bearing capacity of body region, and further improve floor plane in, out of plane stiffness.
Described ribs at least side is embedded or is raised in described obturator.Ribs is embedded in obturator can
To be prevented effectively from cold-heat bridge, it is possible to strengthen obturator and be connected with ribs；Ribs, which is raised in obturator, to be strengthened
The intensity and rigidity of rib, when for laminated floor slab, can strengthen the connection with laminated floor slab, it is possible to strengthen obturator and reinforcement
Rib is connected.
Described ribs is that single direction is set or crisscross setting, can be needed to carry out different set according to intensity
Put, to reach the optimum efficiency of economy, quality.
At least one side of compound precast floor slab is provided with frame, to strengthen the intensity and rigidity of compound precast floor slab,
And the compound precast floor slab of precast block and the connection of compound precast floor slab and surrounding member can be strengthened.
At least one hole is provided with compound precast floor slab, the hole is located at floor centre position or marginal position or angle
Dropping place is put, and the hole is used mainly as floor above and below connection or irregular room.
Described obturator is air entrained concrete material or foam concrete material or haydite concrete material or gypsum material
Matter or light material.
The material of described ribs, panel and frame is armored concrete or steel.
A kind of compound precast floor slab preparation method, first on bed die lay in advance it is prefabricated described in obturator and side mould,
The paving location of the specification of prefabricated obturator, side edge shape and obturator should meet the form of ribs；Secondly in ribs
Rib reinforcement or shaped steel and slab reinforcement are strengthened in position and the laying of obturator top；Last casting concrete, forms multiple after maintenance
Close precast floor slab.
A kind of compound precast floor slab preparation method, first lays prefabricated ribs or the face with ribs in advance on bed die
Plate；After-pouring foam concrete, forms compound precast floor slab after maintenance.
Beneficial effects of the present invention：The present invention can be used for one-way slabs, can be used for two-way slab；The present invention is when needed
Hole can be set and the floor of various outer contour shapes is adapted to, big plate is assembled into after being lifted after being made with piecemeal；This hair
Bright whole schemes can also can both be used as full precast floor slab as laminated floor slab, can be both adapted to small span and also be adapted for greatly
The big load situation of span.The present invention makes floor turn into integrated carrying, insulation by setting the light filling body with heat-insulating property
And the light floor of the self-heat conserving of sound insulation integration, it is particularly suitable for use in residential housing engineering.Rational in infrastructure, weight of the invention
Gently, fabrication and installation convenience, economy, insulation and sound insulation property are good.
Brief description of the drawings
Fig. 1 is the composite floor plate planar structure schematic diagram that ribs of the present invention uses crisscross setting；
Fig. 2 is the composite floor plate planar structure schematic diagram that ribs of the present invention uses one direction to set；
Fig. 3 is ribs and the contour structural representation of obturator；
Fig. 4 is the structural representation of obturator one side all standing ribs；
Fig. 5 is the structural representation that obturator two sides covers ribs；
Fig. 6 is the structural representation that floor one side is provided with panel；
Fig. 7 is the structural representation that floor one side sets panel another side obturator all standing ribs；
Fig. 8 is the structural representation that floor one side sets panel and the circumferentially extending of ribs one end；
Fig. 9 is provided with the structural representation of frame for the floor of crisscross ribs；
Figure 10 is provided with the structural representation of frame for the floor of unidirectional ribs；
Figure 11 sets the structural representation of hole for the floor centre position of crisscross ribs；
Figure 12 sets the structural representation of hole for the floor centre position of unidirectional ribs；
Figure 13 sets the structural representation of hole for the floor marginal position of crisscross ribs；
Figure 14 sets the structural representation of hole for the floor centre position of unidirectional ribs；
Figure 15 sets the structural representation of hole for the floor corner location of crisscross ribs；
Figure 16 sets the structural representation of hole for the floor corner location of unidirectional ribs；
Figure 17 is the processing mold structural representation that floor top sets panel；
Figure 18 is the processing mold structural representation of floor bottom setting face plate.
Embodiment
With reference to embodiment, the invention will be further described.
Embodiment one
A kind of compound precast floor slab as shown in Figure 1, Figure 2 and Figure 3, the floor includes the main obturator for playing carrying
1, the obturator is prefabricated；In obturator further strengthen obturator bearing strength ribs 2, wherein the ribs with
Obturator is prefabricated into an overall structure.Ribs two ends are flushed with obturator two sides, and described obturator is air entrained concrete material
Matter or haydite concrete material or gypsum material or light material, the material of described ribs is armored concrete or steel.
The ribs is that single direction is set or crisscross setting.
Embodiment two
As shown in Figure 4 and Figure 5, the present embodiment and the difference of embodiment one are：In the present embodiment ribs its
Middle one or both ends are embedded in obturator, obturator is covered the one or both ends of ribs.
Embodiment three
As shown in Fig. 6, Fig. 7 and Fig. 8, the present embodiment and the difference of embodiment one are：Also include in the present embodiment
Located at floor at least one side and the panel 3 of ribs integral structure, described obturator is in close contact with panel.It is in Fig. 7
Floor one side sets panel, another side obturator covering ribs.Ribs one end as shown in Figure 8 extends to the periphery to form card
Position.
Example IV
As shown in Figure 9 and Figure 10, the present embodiment and the difference of embodiment one are：The surrounding of floor in the present embodiment
It is provided with frame 4.Described frame is irregular shape.
Embodiment five
As shown in Figure 11-Figure 16, the difference of the present embodiment and embodiment one is in the present embodiment that floor is provided with
At least one hole 5, the hole is located at floor centre position or marginal position or corner location.
A kind of compound precast floor slab preparation method as shown in figure 17, first laid on bed die it is prefabricated in advance described in fill out
Fill body and side mould, the paving location of the specification of prefabricated obturator, side edge shape and obturator should meet the form of ribs；Secondly
Strengthen rib reinforcement or shaped steel and slab reinforcement in the position of ribs and the laying of obturator top；Last casting concrete, through supporting
Compound precast floor slab is formed after shield.
A kind of compound precast floor slab preparation method as shown in figure 18, first lays prefabricated ribs or band in advance on bed die
The panel of ribs；After-pouring foam concrete, forms compound precast floor slab after maintenance.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, on the premise of god of the invention and scope is not departed from, the simple change of those ordinary skill in the art and
Replacement is all within protection scope of the present invention.
Claims (10)
1. a kind of compound precast floor slab, it is characterised in that：The floor has at least included the obturator of insulation and carrying effect；It is located at
Play the ribs of main carrying in obturator, the wherein ribs is prefabricated into an overall structure with obturator.
2. a kind of compound precast floor slab according to claim 1, it is characterised in that：Also include being located at below floor and reinforcement
The panel of rib integral structure, described obturator is in close contact with panel.
3. a kind of compound precast floor slab according to claim 1, it is characterised in that：Also include being located above floor and reinforcement
The panel of rib integral structure, described obturator is in close contact with panel.
4. a kind of compound precast floor slab according to claim 1, it is characterised in that：In described ribs at least side
It is embedding or be raised in described obturator.
5. a kind of compound precast floor slab according to claim 1 or 2 or 3 or 4, it is characterised in that：Described ribs is
Single direction is set or crisscross setting.
6. a kind of compound precast floor slab according to claim 5, it is characterised in that：At least one of compound precast floor slab
While being provided with frame.
7. a kind of compound precast floor slab according to Claims 2 or 3, it is characterised in that：Described obturator is mixed for aerating
Solidifying soil material or foam concrete material or haydite concrete material or gypsum material or light material, described ribs, face
The material of plate and frame is armored concrete or steel.
8. a kind of compound precast floor slab according to claim 5, it is characterised in that：Provided with least in compound precast floor slab
One hole, the hole is located at floor centre position or marginal position or corner location.
9. a kind of compound precast floor slab preparation method, it is characterised in that：Filling described in the first laying on bed die is prefabricated in advance
Body and side mould, the paving location of the specification of prefabricated obturator, side edge shape and obturator should meet the form of ribs；Secondly exist
Rib reinforcement or shaped steel and slab reinforcement are strengthened in the position of ribs and the laying of obturator top；Last casting concrete, through maintenance
Compound precast floor slab is formed afterwards.
10. a kind of compound precast floor slab preparation method, it is characterised in that：Prefabricated ribs in advance is first laid on bed die or with adding
The panel of strong rib；After-pouring foam concrete, forms compound precast floor slab after maintenance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710389254.0A CN107190895A (en) | 2017-05-31 | 2017-05-31 | A kind of compound precast floor slab and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710389254.0A CN107190895A (en) | 2017-05-31 | 2017-05-31 | A kind of compound precast floor slab and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107190895A true CN107190895A (en) | 2017-09-22 |
Family
ID=59875651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710389254.0A Pending CN107190895A (en) | 2017-05-31 | 2017-05-31 | A kind of compound precast floor slab and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107190895A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005235A (en) * | 2017-12-19 | 2018-05-08 | 浙江绿筑集成科技有限公司 | A kind of connection method of two Span Continuous formula floor |
| CN109592944A (en) * | 2018-12-27 | 2019-04-09 | 北京市市政工程研究院 | A kind of ultra-high performance concrete and a kind of ultra-high performance concrete cored slab and preparation method thereof |
| CN113338504A (en) * | 2021-05-31 | 2021-09-03 | 中国建筑第七工程局有限公司 | Leakage-proof prefabricated floor slab construction process |
| CN114033028A (en) * | 2021-11-19 | 2022-02-11 | 中信建筑设计研究总院有限公司 | Floor system arrangement structure and method for saving floor height of basement |
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|---|---|---|---|---|
| SU977639A1 (en) * | 1980-12-29 | 1982-11-30 | Проектный И Научно-Исследовательский Институт "Красноярского Промстройниипроекта" | Floor slab |
| CN2364106Y (en) * | 1998-11-10 | 2000-02-16 | 河北济民工贸有限公司 | High strength light heat- and sound-insulating floor slab |
| US20040065033A1 (en) * | 2001-02-21 | 2004-04-08 | Alexander Bleibler | Prefabricated construction element for buildings |
| CN101327613A (en) * | 2007-06-22 | 2008-12-24 | 邱则有 | Method for manufacturing pre-fabricated reinforced concrete plate with rib |
| EP2146017A1 (en) * | 2008-07-18 | 2010-01-20 | Beletto AG | Component for floor or roof slabs and method for manufacturing a component |
| CN201713970U (en) * | 2010-07-21 | 2011-01-19 | 李林 | Structural system with light multi-ribbed plates and light multi-ribbed floor systems |
| CN104314213A (en) * | 2014-11-07 | 2015-01-28 | 东南大学 | Novel large-span assembly type hollow groined floor system |
| CN208329318U (en) * | 2017-05-31 | 2019-01-04 | 施晓微 | A kind of compound precast floor slab |
-
2017
- 2017-05-31 CN CN201710389254.0A patent/CN107190895A/en active Pending
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| SU977639A1 (en) * | 1980-12-29 | 1982-11-30 | Проектный И Научно-Исследовательский Институт "Красноярского Промстройниипроекта" | Floor slab |
| CN2364106Y (en) * | 1998-11-10 | 2000-02-16 | 河北济民工贸有限公司 | High strength light heat- and sound-insulating floor slab |
| US20040065033A1 (en) * | 2001-02-21 | 2004-04-08 | Alexander Bleibler | Prefabricated construction element for buildings |
| CN101327613A (en) * | 2007-06-22 | 2008-12-24 | 邱则有 | Method for manufacturing pre-fabricated reinforced concrete plate with rib |
| EP2146017A1 (en) * | 2008-07-18 | 2010-01-20 | Beletto AG | Component for floor or roof slabs and method for manufacturing a component |
| CN201713970U (en) * | 2010-07-21 | 2011-01-19 | 李林 | Structural system with light multi-ribbed plates and light multi-ribbed floor systems |
| CN104314213A (en) * | 2014-11-07 | 2015-01-28 | 东南大学 | Novel large-span assembly type hollow groined floor system |
| CN208329318U (en) * | 2017-05-31 | 2019-01-04 | 施晓微 | A kind of compound precast floor slab |
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| 赵东昕;周红霞;谢靖中;赵影;: "现浇空心无梁楼盖在工业厂房与仓储工程中的应用与设计", 建筑结构 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005235A (en) * | 2017-12-19 | 2018-05-08 | 浙江绿筑集成科技有限公司 | A kind of connection method of two Span Continuous formula floor |
| CN109592944A (en) * | 2018-12-27 | 2019-04-09 | 北京市市政工程研究院 | A kind of ultra-high performance concrete and a kind of ultra-high performance concrete cored slab and preparation method thereof |
| CN113338504A (en) * | 2021-05-31 | 2021-09-03 | 中国建筑第七工程局有限公司 | Leakage-proof prefabricated floor slab construction process |
| CN114033028A (en) * | 2021-11-19 | 2022-02-11 | 中信建筑设计研究总院有限公司 | Floor system arrangement structure and method for saving floor height of basement |
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Effective date of registration: 20200713 Address after: 325000, room 9, 405 flower court, Nanpu street, Lucheng District, Wenzhou, Zhejiang Applicant after: Zhao Dongxin Applicant after: Zheng Jinsheng Address before: 325000 innovation building, high tech Zone, Longwan District, Zhejiang, Wenzhou Applicant before: Shi Xiaowei |
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