CN112392189A - Hollow floor system with stiffening columns and box body for improving local pressure bearing performance of plate surface and construction method of hollow floor system - Google Patents
Hollow floor system with stiffening columns and box body for improving local pressure bearing performance of plate surface and construction method of hollow floor system Download PDFInfo
- Publication number
- CN112392189A CN112392189A CN202011378788.1A CN202011378788A CN112392189A CN 112392189 A CN112392189 A CN 112392189A CN 202011378788 A CN202011378788 A CN 202011378788A CN 112392189 A CN112392189 A CN 112392189A
- Authority
- CN
- China
- Prior art keywords
- floor
- stiffening
- plate
- hollow
- floor system
- 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
Links
Images
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
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
-
- 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
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
- E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a hollow floor system with stiffening columns and a box body for improving the local pressure bearing performance of a floor surface and a construction method thereof, wherein the hollow floor system comprises a floor system upper plate, a floor system lower plate and a plurality of thin-wall hollow square boxes arranged between the floor system upper plate and the floor system lower plate, the floor system upper plate and the floor system lower plate are respectively internally provided with a floor surface reinforcing steel bar and a floor bottom reinforcing steel bar, and the floor surface reinforcing steel bar and the floor bottom reinforcing steel bar between the adjacent thin-wall hollow square boxes are also connected through a lacing wire; the middle part of the thin-wall hollow square box is provided with a plurality of parallel stiffening holes which are vertically communicated, when the floor is poured, the stiffening holes which are vertically communicated are also filled with concrete to form point-type supporting stiffening columns, the stiffening columns are integrally formed with an upper floor plate and a lower floor plate of the floor, and the distance between the adjacent stiffening columns is smaller than the width of a truck tire. The hollow floor system can greatly improve the bearing capacity of the top plate in the box body area.
Description
Technical Field
The invention relates to the field of hollow floors, in particular to a hollow floor with stiffening columns and a box body for improving the local pressure bearing performance of a plate surface and a construction method thereof.
Background
With the continuous development of building technology, hollow floor systems are gradually and widely applied on the basis of conventional cast-in-place reinforced concrete ribbed floor systems and flat floor systems. As a novel floor system, the floor system is formed by pouring a certain number of permanent thin-wall box bodies regularly arranged in a cast-in-place concrete floor slab.
Because of the thin-wall box body, the hollow floor system has the advantages of small concrete consumption, light dead weight, shortened construction period, improved sound insulation effect, reduced structural cost and the like, and the economic and technical indexes are obviously improved compared with other types of floor system.
The size of the box body of the existing hollow floor is generally between 400 and 1000mm, and the commonly used box body is a thin-wall square box made of gypsum and plastic products. In order to exert the advantages of light dead weight and small concrete consumption of the hollow floor, the size of the internal box body is continuously increased. The hollow floor is safe as a common office floor and a household car parking garage, however, underground garages such as city commercial complexes, underground supermarkets and office buildings often have freight cars in and out, or part of machine rooms and storage rooms have large loads, and the existing hollow floor has great potential safety hazards.
The existing partial floor has large local stacking load or can damage the hollow floor when concentrated force exists. In the running area of the minivan in the underground garage, the hollow floor slabs are provided with upper and lower layers of steel bars at the bottoms and the surfaces of the slabs according to calculation, and the integral bending resistance of the floor slabs can meet the use requirement. The uniform load of a single tyre acting on a single box body area of a common small truck is more than 100kN/m2And far exceeds the value of the design load, each cell of the hollow floor system is damaged, and the damage form is shown in figure 1. The damage area is often not found because the damage area is positioned in the floor. There is a great safety risk that these local cracks continue to develop.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a hollow floor system with stiffening columns and a box body for improving the local pressure bearing performance of the surface of the floor system and a construction method thereof.
The purpose of the invention is realized by the following technical scheme:
the box body is a thin-wall hollow square box, and is provided with a plurality of parallel stiffening holes which are vertically communicated.
Furthermore, the vertically through stiffening holes are distributed in an array or a plum blossom shape.
Further, the distance between the connected vertically through stiffening holes is 150-300 mm.
Furthermore, arc-shaped flow guide structures are arranged at two ends of the vertically through stiffening holes, namely the diameters of the upper end and the lower end of the vertically through stiffening holes are larger than that of the middle of the vertically through stiffening holes.
A hollow floor cover with stiffening columns for improving the local pressure bearing performance of the plate surface comprises a floor upper plate, a floor lower plate and a box body, wherein the box body is arranged between the floor upper plate and the floor lower plate;
plate surface reinforcing steel bars and plate bottom reinforcing steel bars are respectively arranged in the floor upper plate and the floor lower plate;
when the floor is poured, the stiffening holes which are vertically communicated with the box body are filled with concrete to form stiffening columns, the stiffening columns are integrally formed with the upper floor plate and the lower floor plate of the floor, and the distance between every two adjacent stiffening columns is smaller than the width of the truck tire.
Furthermore, the stiffening columns of the upper floor plate are arranged in an array or a plum blossom shape.
Furthermore, the diameters of the upper end and the lower end of the stiffening column are larger than the diameter of the middle part of the stiffening column.
Furthermore, the distance between adjacent stiffening columns is 150-300 mm.
Furthermore, the plate surface reinforcing steel bars and the plate bottom reinforcing steel bars between the adjacent thin-wall hollow square boxes are connected through tie bars.
The construction method of the hollow floor comprises the following steps:
(1) firstly, floor slab formwork supporting is carried out;
(2) laying floor slab bottom steel bars;
(3) placing a thin-wall hollow square box with a vertically through stiffening hole;
(4) laying the intercostal steel bars and the plate steel bars of the floor slab;
(5) and (5) pouring concrete.
The invention has the following beneficial effects:
compared with the common hollow floor, the hollow floor can eliminate the potential safety hazard of the existing hollow floor and greatly improve the bearing capacity of the top plate in the box body area. Because the upper plate of the box body of the floor system is provided with the stiffening holes, the lower part of the mold box and the concrete can be poured more compactly; the stiffening holes are filled with concrete to form stiffening columns with strong pressure resistance, so that the local and integral pressure resistance and bending resistance of the hollow floor slab are greatly enhanced. The existence of stiffening hole on the square box also can improve the rigidity of box in construction and transportation, reduces the damage.
Drawings
FIG. 1 is a schematic view of a conventional hollow floor slab undergoing a local collapse under a wheel pressure;
FIG. 2 is a schematic structural view of the case of the present invention;
FIG. 3 is a top view of the case of the present invention;
FIG. 4 is a top plan view of a hollow floor;
FIG. 5 is a partial view of AA in FIG. 4;
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments, and the objects and effects of the present invention will become more apparent, it being understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
As shown in fig. 2 and 3, the box body for the hollow floor system is a thin-wall hollow square box, and the box body is provided with a plurality of parallel stiffening holes which are vertically communicated.
In order to further improve the bearing performance of the upper plate of the floor and greatly improve the bearing capacity of the top plate of the box body area, the vertically through stiffening holes are distributed in an array or a plum blossom shape. The upper and lower parts of the stiffening hole are provided with arc-shaped flow guide holes, and the diameter of each arc-shaped flow guide hole is larger than the diameter (generally 60-70mm) of the middle part of the stiffening hole.
As shown in figure 1, in order to better bear the weight of the truck, the distance between the connected stiffening holes which are vertically penetrated is smaller than the width of the truck tire, and the distance is 150-300 mm. For a box body with the length of less than 600mm, the spacing between the pore canals is preferably 15-20 cm; for a box body with the length of more than 600mm, the distance between the pore canals is preferably 20-30 cm.
As shown in fig. 4 and 5, the hollow floor system with the stiffening columns for improving the local pressure-bearing performance of the floor surface comprises a floor system upper plate, a floor system lower plate and a plurality of box bodies arranged between the floor system upper plate and the floor system lower plate, wherein the box bodies are thin-wall hollow square boxes, the floor surface reinforcing steel bars and the floor bottom reinforcing steel bars are respectively arranged in the floor system upper plate and the floor system lower plate, and the floor surface reinforcing steel bars and the floor bottom reinforcing steel bars between the adjacent box bodies are also connected through tie bars.
Because of the middle part of the thin-wall hollow square box is provided with a plurality of parallel vertical through stiffening holes, when the floor is poured, concrete below the square box can be poured more compactly, the vertical through stiffening holes are also filled with concrete to form stiffening columns, the stiffening columns are integrally formed with an upper plate of the floor and a lower plate of the floor, and the distance between the adjacent stiffening columns is smaller than the width of a truck tire. When wheel pressure or other concentrated loads act on the grids of the hollow floor, the stiffening columns have pressure resistance, large positive bending moment cannot be generated on the grids at the top of the hollow floor, and the stiffening columns coordinate with the top plate of the hollow floor to ensure the safety of the top of the grids above the hollow floor box body.
The box material can be glass fiber + slurry inorganic material, high-injection alloy or PPE.
At present, the side length of the hollow floor is mostly 400-1000mm, the height of the box body is more than 150-500 mm, and the thickness of the upper floor plate and the lower floor plate is not less than 40mm and is mostly about 60-80 mm. Because the upper plate and the lower plate are only provided with single-layer steel bars in the middle, the bending resistance is very small, and the floor can only bear the load of a common floor. After the stiffening columns are arranged, under the condition of reducing the consumption and the dead weight of concrete, the stiffening columns can greatly reduce the secondary bending moment caused by concentrated force such as tire load in the upper plate of the floor system and even directly support the tire load, thereby greatly improving the local bearing capacity of the hollow floor system.
When the stiffening column directly bears the load of the tire, the floor slab is used as a space truss, the whole bending resistance is strong, and the local bending moment is eliminated.
When the local load formed by the tire and the like is positioned between the stiffening columns, the local bending moment of the hollow floor is changed from the original M ═ 0.16-0.1G
Is reduced to
M≈0.1G
Wherein: g is the bearing weight of the rear wheel; m is the maximum bending moment caused by the rear wheel in a single hollow floor.
The construction method of the hollow floor system specifically comprises the following steps:
(1) firstly, floor slab formwork supporting is carried out;
(2) laying floor slab bottom steel bars;
(3) placing a thin-wall hollow square box with concave ribs;
(4) laying the intercostal steel bars and the plate steel bars of the floor slab;
(5) and (5) pouring concrete.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and although the invention has been described in detail with reference to the foregoing examples, it will be apparent to those skilled in the art that various changes in the form and details of the embodiments may be made and equivalents may be substituted for elements thereof. All modifications, equivalents and the like which come within the spirit and principle of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The box body for the hollow floor is characterized in that the box body is a thin-wall hollow square box and is provided with a plurality of parallel stiffening holes which are vertically communicated.
2. The box body for the hollow floor as claimed in claim 1, wherein the vertically penetrating stiffening holes are distributed in an array or a quincunx shape.
3. The box body for the hollow floor as claimed in claim 2, wherein the interval between the connected vertically penetrating stiffening holes is 150-300 mm.
4. The box body for the hollow floor system as claimed in claim 1, wherein the two ends of the vertically through stiffening holes are provided with arc-shaped flow guiding structures, that is, the diameters of the upper and lower ends of the vertically through stiffening holes are larger than the diameter of the middle part.
5. A hollow floor cover with stiffening columns for improving the local pressure bearing performance of the plate surface is characterized by comprising an upper floor plate, a lower floor plate and a plurality of box bodies according to claim 1, wherein the box bodies are arranged between the upper floor plate and the lower floor plate;
plate surface reinforcing steel bars and plate bottom reinforcing steel bars are respectively arranged in the floor upper plate and the floor lower plate;
when the floor is poured, the stiffening holes which are vertically communicated with the box body are filled with concrete to form stiffening columns, the stiffening columns are integrally formed with the upper floor plate and the lower floor plate of the floor, and the distance between every two adjacent stiffening columns is smaller than the width of the truck tire.
6. The hollow floor system with the stiffening columns for improving the local pressure bearing performance of the plate surface according to claim 5, wherein the number of the stiffening columns of the upper floor system is multiple and the stiffening columns are arranged in an array or a plum blossom shape.
7. The hollow floor system with the stiffening columns for improving the local pressure bearing performance of the plate surface according to claim 5, is characterized in that the diameters of the upper end and the lower end of each stiffening column are larger than the diameter of the middle part of each stiffening column.
8. The hollow floor with the stiffening columns for improving the local pressure bearing performance of the floor surface according to claim 5, wherein the distance between the adjacent stiffening columns is 150-300 mm.
9. The hollow floor system with the stiffening columns for improving the local pressure bearing performance of the plate surface according to claim 5, wherein the plate surface reinforcing steel bars and the plate bottom reinforcing steel bars between the adjacent thin-wall hollow square boxes are further connected through tie bars.
10. A construction method of a hollow floor according to claim 5, characterized in that the method comprises the following steps:
(1) firstly, floor slab formwork supporting is carried out;
(2) laying floor slab bottom steel bars;
(3) placing a thin-wall hollow square box with a vertically through stiffening hole;
(4) laying the intercostal steel bars and the plate steel bars of the floor slab;
(5) and (5) pouring concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011378788.1A CN112392189A (en) | 2020-11-30 | 2020-11-30 | Hollow floor system with stiffening columns and box body for improving local pressure bearing performance of plate surface and construction method of hollow floor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011378788.1A CN112392189A (en) | 2020-11-30 | 2020-11-30 | Hollow floor system with stiffening columns and box body for improving local pressure bearing performance of plate surface and construction method of hollow floor system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112392189A true CN112392189A (en) | 2021-02-23 |
Family
ID=74605575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011378788.1A Pending CN112392189A (en) | 2020-11-30 | 2020-11-30 | Hollow floor system with stiffening columns and box body for improving local pressure bearing performance of plate surface and construction method of hollow floor system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112392189A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040043263A (en) * | 2002-11-18 | 2004-05-24 | 한국건설기술연구원 | Hollow Type I Beam Composite Deck having Transverse Joints and Constructing Method thereof |
| CN2878563Y (en) * | 2006-02-24 | 2007-03-14 | 北京宇星国科科技发展有限公司 | Two-way pre-stressed floor/roofing and wall body laminated hollow plate |
| CN202969669U (en) * | 2012-12-24 | 2013-06-05 | 刘青云 | Cast-in-place hollow-ribbed floor |
| CN103628683A (en) * | 2013-12-10 | 2014-03-12 | 中铁二十三局集团有限公司 | Construction method of cast-in-place hollow girderless floor |
| CN105604317A (en) * | 2016-02-24 | 2016-05-25 | 广东省建筑设计研究院 | Thin-wall square box hollow floor mandrel and anti-floating method thereof |
| CN110439162A (en) * | 2019-08-27 | 2019-11-12 | 中冶建工集团有限公司 | The construction technology of cast-in-situ hollow building roof |
| CN110700469A (en) * | 2019-10-31 | 2020-01-17 | 杨景 | Light filling body core mold for hollow floor and manufacturing method thereof |
| CN210238895U (en) * | 2019-04-25 | 2020-04-03 | 上海城建市政工程（集团）有限公司 | Hollow superstructure of no roof beam |
-
2020
- 2020-11-30 CN CN202011378788.1A patent/CN112392189A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040043263A (en) * | 2002-11-18 | 2004-05-24 | 한국건설기술연구원 | Hollow Type I Beam Composite Deck having Transverse Joints and Constructing Method thereof |
| CN2878563Y (en) * | 2006-02-24 | 2007-03-14 | 北京宇星国科科技发展有限公司 | Two-way pre-stressed floor/roofing and wall body laminated hollow plate |
| CN202969669U (en) * | 2012-12-24 | 2013-06-05 | 刘青云 | Cast-in-place hollow-ribbed floor |
| CN103628683A (en) * | 2013-12-10 | 2014-03-12 | 中铁二十三局集团有限公司 | Construction method of cast-in-place hollow girderless floor |
| CN105604317A (en) * | 2016-02-24 | 2016-05-25 | 广东省建筑设计研究院 | Thin-wall square box hollow floor mandrel and anti-floating method thereof |
| CN210238895U (en) * | 2019-04-25 | 2020-04-03 | 上海城建市政工程（集团）有限公司 | Hollow superstructure of no roof beam |
| CN110439162A (en) * | 2019-08-27 | 2019-11-12 | 中冶建工集团有限公司 | The construction technology of cast-in-situ hollow building roof |
| CN110700469A (en) * | 2019-10-31 | 2020-01-17 | 杨景 | Light filling body core mold for hollow floor and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105756252B9 (en) | Prestressed concrete truss laminated slab and manufacturing method thereof | |
| CN105568853B (en) | Wide-span reinforced concrete flitch-trussed beam side position is traversing, the construction method of the beam that falls | |
| CN203201175U (en) | Integrated aluminium alloy villa | |
| CN203320776U (en) | Light cast-in-place steel bar truss composite floor | |
| CN102146731A (en) | Supporting structure for floor formwork of steel structure building and construction method | |
| CN214329507U (en) | Hollow floor and box body with stiffening columns for improving local pressure bearing performance of plate surface | |
| CN104196163A (en) | Two-direction pre-stressed prefabricated hollow concrete slab and manufacturing method thereof | |
| CN104264706A (en) | Externally-use elevator girder foundation configuration and construction method thereof | |
| CN112360031B (en) | Ribbed hollow floor system and box body capable of improving local pressure bearing performance of plate surface and construction method of ribbed hollow floor system and box body | |
| CN201963317U (en) | Single-side steel mould trolley | |
| CN201573265U (en) | Precast box girder inner formwork device of bridge beam | |
| CN112392189A (en) | Hollow floor system with stiffening columns and box body for improving local pressure bearing performance of plate surface and construction method of hollow floor system | |
| CN201610636U (en) | Fixing and supporting bracket for stacking precast concrete slab | |
| CN211421171U (en) | Cast-in-place utility tunnel movable support platform truck formwork system | |
| CN203145273U (en) | Dismountable steel-concrete composite floor | |
| CN212295030U (en) | Commercial basement roof structure for dwelling | |
| CN213137167U (en) | Box girder steel ground child | |
| CN110158987B (en) | Brick wall reinforcing structure for roof parking system | |
| CN208717939U (en) | A kind of efficiently molding building hoist foundation structure | |
| CN116255021B (en) | Novel method for reinforcing and supporting replacement concrete of shear wall with strength not reaching standard | |
| CN214658799U (en) | High-rise building corridor does not have pull rod pi type template support device | |
| CN211228120U (en) | Bent cap formwork support | |
| CN215672241U (en) | Cast-in-place medium plate of assembled travelling bogie | |
| CN204001335U (en) | The cast-in-place core body floor of a kind of lightweight with deformed steel flats | |
| CN113737652B (en) | Temporary supporting structure for simply supported channel beam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210223 |