CN113374141A - Bottom-die-disassembly-free one-truss steel bar floor support plate - Google Patents
Bottom-die-disassembly-free one-truss steel bar floor support plate Download PDFInfo
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- CN113374141A CN113374141A CN202110575634.XA CN202110575634A CN113374141A CN 113374141 A CN113374141 A CN 113374141A CN 202110575634 A CN202110575634 A CN 202110575634A CN 113374141 A CN113374141 A CN 113374141A
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- truss
- steel bar
- disassembly
- support plate
- floor support
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses a bottom-die-disassembly-free truss steel bar floor support plate, which is characterized in that: the steel bar truss structure comprises a bottom-dismantling-free template, a n-shaped profile connecting piece, self-tapping screws, lower chord longitudinal steel bars, upper chord longitudinal steel bars and web member wavy-type bent-leg steel bars in a truss steel bar structure; the steel bars longitudinally distributed on the steel bar floor support plate with the disassembly-free bottom die are single steel bar trusses, and compared with triangular steel bar trusses in the steel bar truss floor support plate with the metal bottom die, because each truss uses less lower chord longitudinal steel bars and less web member steel bars, the steel content is greatly reduced, and the steel content is most approximate to that of a traditional cast-in-place plate system, and the bottom of the disassembly-free bottom die can be directly subjected to putty scraping decoration; the disassembly-free bottom die-one truss reinforced floor support plate saves the cost for a construction party, realizes the aim of quick turnover, saves the workload of deepening design for a design party, accelerates the construction progress and better controls the construction quality for a construction party, and completely releases the productivity for a component production party, so that each party participating in a project obtains respective benefits.
Description
Technical Field
The invention relates to the technical field of fabricated buildings, in particular to a truss reinforced floor support plate with a disassembly-free bottom die.
Background
The prefabricated floor slab component which is most applied in the fabricated steel structure engineering is the metal bottom plate steel bar truss floor support plate, and the metal bottom plate steel bar truss floor support plate can realize large span of more than 2 meters without support during construction due to the fact that the metal bottom plate steel bar truss floor support plate is provided with a plurality of triangular steel bar trusses (three-dimensional space) which are parallel to each other and contributes rigidity by the triangular space trusses, and has the advantages of light total weight, convenience in construction and the like; but the shortcoming is also obvious, because the bottom surface of the metal bottom plate is smooth, direct putty applying decoration can not be carried out, the metal bottom plate needs to be dismantled or a suspended ceiling needs to be additionally made for convenient installation and repair, in addition, the steel content is large, and the cost is slightly higher especially under the current situation that the price of the steel bar is fiercely increased. It is these two disadvantages that influence its application and popularization in the concrete construction field, especially in residential projects. The invention aims to solve two defects of a metal bottom plate steel bar truss floor support plate and provides a truss steel bar floor support plate without a bottom die.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a bottom-detaching-free formwork and a truss steel bar floor support plate are provided, and the structure is formed by combining a bottom-detaching-free formwork, a n-shaped profile connecting piece, a self-tapping screw, a lower-chord longitudinal steel bar, an upper-chord longitudinal steel bar and a web member wavy-type bent-leg steel bar in a truss steel bar structure. The disassembly-free bottom die-truss reinforced floor support plate also has higher longitudinal rigidity, and can realize large span of more than 2 meters without support during construction. Compared with the steel bar truss floor bearing plate with the metal bottom plate, the steel bar truss structure only comprises a lower chord longitudinal steel bar, an upper chord longitudinal steel bar and a web member wavy strip bent steel bar combination, so that the steel content is obviously less; and the bottom of the disassembly-free bottom template can be directly puttered for decoration, and the practicability is very strong.
The technical scheme adopted by the invention is as follows:
1. exempt from to tear open die block truss steel bar floor carrier plate, its characterized in that: the steel bar truss structure comprises a disassembly-free bottom template, a n-shaped section connecting piece, self-tapping screws, lower chord longitudinal steel bars, upper chord longitudinal steel bars and web member wavy type bent-leg steel bars in a truss steel bar structure.
2. The disassembly-free bottom template is characterized by being a fiber reinforced inorganic non-metallic material composite board, such as a magnesium crystal board, a glass magnesium board, a fiber cement board and the like which are common in the market. The non-dismantling bottom template has the width dimension of 100-1220 mm, the length dimension of 1200-3600 mm, the thickness dimension of 10-50 mm and the density of 1000-1500 kg/m3Less than 2450kg/m of concrete density3And the light weight is realized.
3. The n-shaped section bar connecting piece is characterized in that a galvanized thin steel plate or a stainless steel plate is bent into a n-shaped shape, a material outlet is formed in the middle of the n-shaped section bar connecting piece, round holes are formed in two ends of the n-shaped section bar connecting piece to facilitate screwing, the cross section of the n-shaped section bar connecting piece is rectangular, the length dimension of the n-shaped section bar connecting piece is 30-80 mm, the width dimension of the n-shaped section bar connecting piece is 20-30 mm, the thickness of the n-shaped section bar connecting piece is 0.5-1.5 mm, and the n-shaped section bar connecting piece mainly plays a role in connecting a truss steel bar and fixing the n-shaped section bar connecting piece into a whole with a bottom template without disassembling.
4. The self-tapping screw is characterized by being common self-tapping screws on the market, and the material can be galvanized or stainless steel.
5. The truss steel bar structure is characterized in that a web member wavy type bent-leg steel bar is welded with an upper chord longitudinal steel bar at the wave crest of a wavy type, and is welded with a lower chord longitudinal steel bar at the position close to the wave trough by about 15mm, the upper chord longitudinal steel bar and the lower chord longitudinal steel bar are aligned up and down, the distance between the upper chord longitudinal steel bar and the lower chord longitudinal steel bar is determined according to a design drawing, and the distance is generally determined by subtracting 2 times of the thickness of a steel bar protective layer from the thickness of a concrete structure; the web member wavy type bent steel bars are welded and combined into a plane truss at one side of the upper and lower chord longitudinal steel bars, the section shape of the plane truss is similar to a herringbone, and the bent directions of the web member wavy type bent steel bars are staggered from left to right; the used steel bars are characterized by smooth round steel bars or threaded steel bars which are common in the market, the cross section is circular, and the common diameter is 4.0mm, 4.5mm, 5mm, 6mm, 8mm, 10mm or 12mm and the like.
6. The disassembly-free bottom die-one truss reinforced floor support plate is characterized in that the parallel reinforced trusses are equidistantly arranged, bent legs of the truss web ribs are lapped through the inverted-V-shaped profile connecting pieces at bent leg positions of the web ribs of the reinforced trusses, the inverted-V-shaped profile connecting pieces are twisted into disassembly-free templates for fixation through self-tapping screws, the front connection key is that the nail holding force provided by the disassembly-free bottom templates is large enough, after the self-tapping screws are screwed, at least each connecting piece can provide more than 1000N pulling force, and otherwise, reverse-striking connection or loose-core pulling anchor connection and other modes are used for connection and fixation.
7. The method comprises the steps of assembling a bottom-dismantling-free formwork and one truss steel bar floor support plate, producing one truss steel bar and a plurality of sectional material connecting pieces by using professional equipment, placing the truss steel bars in parallel at equal intervals on the surface of a bottom-dismantling-free formwork, erecting bent legs of the truss web bar by the aid of the sectional material connecting pieces, and screwing self-tapping screws into the front surface of the sectional material connecting pieces to fix the truss steel bar floor support plate.
8. All the modules are fixed to form a dismantling-free bottom die, a truss steel bar floor support plate standard module, transverse bottom ribs and gluten are bound on a construction site to ensure that a truss is stable outside the plane, then a pipeline is penetrated, and superposed layer concrete is poured; during construction, the floor support plate with one truss steel bar without detaching the bottom die and the support frame bear the load during construction.
The invention has the following beneficial effects:
1. the steel content is greatly reduced because each truss uses less lower chord longitudinal steel bars and web member steel bars, and the steel content is the closest to that of the traditional cast-in-place plate system.
2. The bottom of the disassembly-free bottom formwork with one truss steel bar floor support plate can be directly plastered for decoration, so that the disassembly is more convenient and trouble-saving.
3. The disassembly-free bottom die and one truss reinforced floor support plate is used as a disassembly-free template for post-cast laminated concrete, so that the on-site formwork disassembly workload is reduced, the standard modules are arranged on a construction site, the construction is simple, the speed is high, and the disassembly-free bottom die and one truss reinforced combination and the support frame jointly bear the load during construction.
4. The rigidity of a bottom-die-dismantling-free truss reinforced floor support plate is high, no support span can be realized by more than 2 meters, a full red scaffold is not needed, the construction support cost is reduced, and the construction period progress is accelerated.
5. The standard module size of one truss reinforced floor support plate without detaching the bottom die is 3000X1200mm, the weight of the truss reinforced floor support plate is about 72kg, the transportation, the hoisting and the assembly are greatly facilitated, two workers can lift and carry the floor support plate, the floor support plate can be hoisted by only a small-tonnage common tower crane, the construction is facilitated, the pressure of each party participating in a project is obviously relieved, and the project progress is accelerated.
6. The removal-free bottom die and one truss reinforced floor support plate standard module are densely spliced without reserving a post-cast strip, transverse steel bars are bound on site, two-way plate reinforcement is realized, the assembled integral floor of a horizontal member is realized, the excellent integral floor rigidity of a cast-in-place plate is reserved, the corner size has errors, the floor can be cut on site to adapt to irregular floor size, and the adaptability is stronger.
7. The disassembly-free bottom die and one truss reinforced floor support plate realize standardized and modularized mass production, completely release the production capacity of a factory assembly line, and have the advantages of high production efficiency, good quality and high delivery speed.
8. The disassembly-free bottom template of one truss steel bar floor support plate of the disassembly-free bottom die is an A-grade fireproof plate, so that the fireproof protection of a floor slab can be effectively enhanced; the heat conductivity coefficient of the disassembly-free bottom template is 0.2 and is less than the heat conductivity coefficient of the concrete 1.7, so that the disassembly-free bottom template can be used as a heat-insulating structural layer between floor slabs to reduce the thickness of other heat-insulating structural layers; the disassembly-free bottom template is internally provided with fine pores, has the functions of sound absorption and sound insulation, and can reduce the thickness of other sound insulation structural layers used by the floor slab.
9. The bottom reinforcing mesh and the upper reinforcing mesh are poured together to form the reinforced concrete structure cast-in-place slab, the bearing capacity can be calculated independently according to the structure theory of the cast-in-place slab, and the bottom formwork without dismantling is used as load input and is safe. Therefore, the cast-in-place slab has the advantage of high integral rigidity and has the characteristic of rapid assembly of the assembled composite floor slab.
10. The disassembly-free bottom die and one truss reinforced floor support plate save the cost for a construction party, realize the aim of quick turnover, save the workload of deepening design for a design party, accelerate the construction progress and better control the construction quality for a construction party, and completely release the productivity for a component production party, so that each party participating in a project obtains respective benefits.
Drawings
FIG. 1 is a schematic front plan view of the present invention
FIG. 2 is a top view of the present invention
FIG. 3 is a partial enlarged view of the present invention
FIG. 4 is a single steel truss drawing of the present invention
FIG. 5 is a cross-sectional view taken along line A-A of the present invention
FIG. 6 is a cross-sectional view taken along line B-B of the present invention
FIG. 7 is a front projection view of a swatch of the present invention
FIG. 8 is a right top view of a thumbnail of the present invention
FIG. 9 is a top left view of a swatch of the present invention
FIG. 10 is a front plan view of a swatch of the present invention
Detailed Description
The structural components of the invention comprise a disassembly-free bottom template 11, a n-shaped section connecting piece 21, a self-tapping screw 31, a lower chord longitudinal steel bar 41, an upper chord longitudinal steel bar 51 and a web member wavy type bent leg steel bar 61 in a truss steel bar structure.
The present invention will be described in further detail below with reference to the accompanying drawings.
1. 1 fiber cement board which is produced by magnesium crystal building technology (Chongqing) limited and meets the A-grade fireproof requirement is used as a disassembly-free bottom template, and the size of the disassembly-free bottom template is 3000 multiplied by 1200 multiplied by 12 mm.
2. A12 mm thick plate is used as a disassembly-free bottom template 11, and the plate surface is subjected to roughening treatment to form a concave-convex surface so as to enhance the bonding force with concrete.
3. The special equipment is used for producing the connecting piece 21 of the n-shaped section bar, and a plurality of blocks with the size of 70 multiplied by 25 multiplied by 1.0mm are used for standby.
4. Professional equipment is used for producing a plurality of trusses of truss steel bar structures, as shown in the attached drawing 4, the length of each truss steel bar structure is 3 meters, in the case, the diameter of a lower chord longitudinal steel bar 41 is 8mm, the diameter of an upper chord longitudinal steel bar 51 is 8mm, the diameter of a web member wavy type bent foot steel bar 61 is 4mm, the height distance between the upper chord longitudinal steel bar and the lower chord longitudinal steel bar is 70mm, and the distance between the outermost skin of the lower chord longitudinal steel bar and the ground is 15mm, namely the thickness of a steel bar protective layer is just equal.
5. Assembling: the 6 groups of truss reinforcing steel bar structures are placed on the surface of the disassembly-free bottom formwork 11 in parallel at equal intervals of 200mm, bent legs of the web member wavy bent leg reinforcing steel bars 61 are lapped through the n-shaped profile connecting pieces 21, the disassembly-free bottom formwork 11 is screwed into the front surfaces of the n-shaped profile connecting pieces 21 by using self-tapping screws 31 for fixing, and all connecting points shown in the attached drawing 3 are processed in the same way, so that one truss reinforcing steel bar and the disassembly-free bottom formwork 11 are firmly connected into a whole, and the standard module of the disassembly-free bottom formwork one truss reinforcing steel bar floor support plate is formed, and is shown in the attached drawings 2 and 1.
6. If the span of the floor slab is more than 3 meters, the disassembly-free bottom formworks 11 of the standard modules can be spliced and lengthened, but a truss steel bar needs to be directly connected and cannot be disconnected.
7. And repeating the steps to manufacture more standard modules, conveying the modules to a construction site, arranging the modules on the erected temporary support frame, binding transverse steel bars, pre-embedding pipelines, binding surface layer steel bars, and pouring laminated layer concrete.
8. After the post-cast laminated layer concrete is poured, after the strength is achieved, the temporary support is removed, the disassembly-free bottom template does not need to be disassembled, and the post-cast laminated layer concrete bears the load effect during normal use; thus, the construction of the truss reinforced floor support plate with one truss bottom die without dismantling is completed.
9. The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the present invention.
Claims (9)
1. Exempt from to tear open die block truss steel bar floor carrier plate, its characterized in that: the steel bar truss structure comprises a disassembly-free bottom template, a n-shaped section connecting piece, self-tapping screws, lower chord longitudinal steel bars, upper chord longitudinal steel bars and web member wavy type bent-leg steel bars in a truss steel bar structure.
2. The disassembly-free bottom die-one truss reinforced floor support plate as claimed in claim 1, wherein: the disassembly-free bottom template is a fiber reinforced inorganic non-metallic material composite board, has A-grade non-combustible performance, and can be made of inorganic flat plates such as magnesium crystal plates, glass magnesium plates, fiber cement plates and the like; the width dimension of the disassembly-free bottom template is 100-1220 mm, and the length dimension1200-3600 mm, 10-50 mm in thickness dimension, and 1000-1500 kg/m in density of the prefabricated bottom plate3。
3. The disassembly-free bottom die-one truss reinforced floor support plate as claimed in claim 1, wherein: the n-shaped profile connecting piece is characterized in that a galvanized thin steel plate or a stainless steel plate is bent into a n-shaped shape, a material outlet hole is formed in the middle of the n-shaped profile connecting piece, round holes are formed in two ends of the n-shaped profile connecting piece so as to facilitate screwing, the cross section of the n-shaped profile connecting piece is rectangular, the length dimension of the n-shaped profile connecting piece is 30-80 mm, the width dimension of the n-shaped profile connecting piece is 20-30 mm, and the thickness of the n-shaped profile connecting piece is 0.5-1.5 mm.
4. The disassembly-free bottom die-one truss reinforced floor support plate as claimed in claim 1, wherein: the self-tapping screw is characterized by being common self-tapping screws on the market, and the material can be galvanized or stainless steel.
5. The disassembly-free bottom die-one truss reinforced floor support plate as claimed in claim 1, wherein: the truss steel bar structure is characterized in that a web member wavy type bent-leg steel bar is welded with an upper chord longitudinal steel bar at the wave crest of a wavy type, and is welded with a lower chord longitudinal steel bar at the position close to the wave trough by about 15mm, the upper chord longitudinal steel bar and the lower chord longitudinal steel bar are vertically aligned, and the distance between the upper chord longitudinal steel bar and the lower chord longitudinal steel bar is determined according to a design drawing; the web member wavy type bent steel bars are welded and combined into a plane truss at one side of the upper and lower chord longitudinal steel bars, the section shape of the plane truss is similar to a herringbone, and the bent directions of the web member wavy type bent steel bars are staggered from left to right; the used steel bars are characterized by smooth round steel bars or threaded steel bars which are common in the market, the cross section is circular, and the common diameter is 4.0mm, 4.5mm, 5mm, 6mm, 8mm, 10mm or 12mm and the like.
6. The disassembly-free bottom die-one truss reinforced floor support plate as claimed in claim 1, wherein: the disassembly-free bottom die-one truss reinforced floor support plate is characterized in that the disassembly-free bottom die-one truss reinforced floor support plate is formed by equidistantly placing one truss reinforced truss which is parallel to each other, bent legs of truss web ribs are lapped through a n-shaped profile connecting piece at bent leg positions of the web ribs of the one truss reinforced truss, a self-tapping screw is used for screwing in a disassembly-free template at the front surface of the n-shaped profile connecting piece for fixing, and the disassembly-free bottom die-one truss reinforced floor support plate can also be connected and fixed in a mode of reverse beating connection or core pulling anchoring and the like.
7. The disassembly-free bottom die-one truss reinforced floor support plate as claimed in claim 1, wherein: all the modules are fixed to form a dismantling-free bottom die and one truss steel bar floor support plate standard module, transverse bottom ribs and gluten are bound on a construction site, then a pipeline is penetrated, and superposed layer concrete is poured; during construction, a bottom-dismantling-free truss reinforced floor support plate and a support frame bear the load during construction together, and during use, the post-cast laminated concrete slab is stressed only.
8. The disassembly-free bottom die-one truss reinforced floor support plate as claimed in claim 1, wherein: the standard module size is 3000X1200mm, and other non-standard sizes can be made up to the corner.
9. The disassembly-free bottom die-one truss reinforced floor support plate as claimed in claim 1, wherein: the invention relates to a product obtained by changing the material, the size and the color of a bottom template without dismantling, the diameter size and the distance of a lower chord longitudinal steel bar, an upper chord longitudinal steel bar and a web member wavy type bent-foot steel bar in a truss steel bar, the bent-foot direction of the web member wavy type bent-foot steel bar, the size and the shape of a n-shaped profile connecting piece, self-tapping screws in other modes, and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110575634.XA CN113374141A (en) | 2021-05-26 | 2021-05-26 | Bottom-die-disassembly-free one-truss steel bar floor support plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110575634.XA CN113374141A (en) | 2021-05-26 | 2021-05-26 | Bottom-die-disassembly-free one-truss steel bar floor support plate |
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| CN113374141A true CN113374141A (en) | 2021-09-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113802748A (en) * | 2021-09-26 | 2021-12-17 | 浙江汉德邦建材有限公司 | Steel bar truss floor support plate and manufacturing method thereof |
| CN114000630A (en) * | 2021-10-25 | 2022-02-01 | 广西装配式装修有限公司 | Lightweight fabricated prefabricated floor slab and manufacturing method thereof |
-
2021
- 2021-05-26 CN CN202110575634.XA patent/CN113374141A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113802748A (en) * | 2021-09-26 | 2021-12-17 | 浙江汉德邦建材有限公司 | Steel bar truss floor support plate and manufacturing method thereof |
| CN114000630A (en) * | 2021-10-25 | 2022-02-01 | 广西装配式装修有限公司 | Lightweight fabricated prefabricated floor slab and manufacturing method thereof |
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