CN214574899U

CN214574899U - Truss floor plate

Info

Publication number: CN214574899U
Application number: CN202120414940.0U
Authority: CN
Inventors: 周建滨; 侯立梅; 王志国; 刘亚莉; 王浩; 杜坤; 武峰峰; 曹荣利
Original assignee: Shandong Construction Technology And Industrialization Center Co ltd
Current assignee: Shandong Construction Technology And Industrialization Center Co ltd
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2021-11-02
Anticipated expiration: 2031-02-25

Abstract

The utility model provides a pair of truss floor board, including truss, die block, connecting piece, the truss includes a last quarter, a pair of lower chord and a pair of web member, last quarter and a pair of lower chord parallel arrangement of each other, the last quarter is connected with a pair of lower chord respectively through a pair of web member, the web member is equipped with the convex body of outwards bending in its part of being connected with the lower chord, and the connecting piece is fixed on the truss to through the fastener with the die block links together. The utility model provides a truss floor board has following advantage: the connecting piece has the function of a concrete protective layer cushion block; the production process is simple, and the transportation and construction are convenient; according to the design of the traditional reinforced concrete floor slab, a post-cast strip is not required to be arranged; ensuring indoor clear height and relatively low construction cost.

Description

Truss floor plate

Technical Field

The utility model relates to a building prefabricated component, the more definite truss floor board that says so, the utility model provides a product is arranged in the construction to bear cast in situ concrete dead weight and construction load to it is whole to superpose with cast in situ concrete, forms floor board or floor board.

Background

At present, the national strongly pushes assembly type buildings, industrial production and assembly type construction are certainly to become main construction modes in the future, most prefabricated components and parts are standardized, serialized and industrialized, especially prefabricated stairs and laminated plates are popularized and applied in a large quantity, and the development of the assembly type buildings is positively promoted. In recent years, the concrete truss composite slab is used in a large amount in the construction industry, and the product can reduce wet operation in the construction process and the using amount of construction templates and scaffolds, reduce labor consumption, reduce construction difficulty and improve construction efficiency. The existing concrete truss composite slab is manufactured in advance to form a truss consisting of an upper chord member, a web member and a lower chord member, the lower chord member and part of the web member are embedded into a concrete bottom plate when the concrete bottom plate is poured to form the concrete truss composite slab, and the lower chord member is simultaneously used as a longitudinal inner rib of the concrete bottom plate. The thickness of the concrete truss composite slab with the structure is required to be ensured to be more than 60mm, otherwise, the bottom plate can be distorted, the requirement on the rigidity of the composite slab in the building construction process cannot be met, the larger the thickness of the concrete bottom plate is, the larger the self weight is, so that the self weight of the whole structure of the building is increased, the volume of foundation structural members such as beams, columns and walls is increased, the utilization rate of the indoor area of the building and the floor height clearance are reduced, the strength of the concrete truss composite slab is also limited, cracks are easily generated in the transportation and installation processes, and the defective rate is higher.

Thus, there are many disadvantages and problems associated with precast concrete composite slabs, which are described in the following.

1. Complicated production process and inconvenient transportation and installation

At present, the precast concrete laminated slab production line adopted by most enterprises in China has large equipment investment and low automation degree, belongs to semi-mechanical and semi-manual production, and mostly adopts manual operation in the procedures of mold assembly, reinforcement, concrete leveling and the like, so that the production process is complex and the labor cost is high. In addition, the precast concrete composite slab has larger weight, is inconvenient to transport and install, and is easy to crack if not hoisted properly.

2. Need to set up post-cast strip, the construction degree of difficulty is big

Transverse stressed steel bars cannot be arranged in the precast concrete composite slab in a full-length mode, beard ribs need to be left on two sides, a concrete post-pouring belt of about 300mm is arranged in a slab joint connection mode, a hanging die needs to be erected, construction is complex, and difficulty is high.

3. The indoor clear height is reduced, and the construction cost is relatively high.

The precast concrete superimposed sheet is generally 60mm thick, and the upside is pour 70mm concrete at least, and floor thickness minimum is 130mm, compares with ordinary cast in situ concrete floor (ordinary span is the thick 100mm of board below 3.6m generally), uses 30mm thick concrete more, reduces indoor effective layer height 30mm, and the house comfort level reduces, and engineering cost is higher relatively.

Disclosure of Invention

The utility model aims at providing a truss floor board, it can solve the above-mentioned not enough that prior art exists. The utility model provides a truss floor board is the three-dimensional combination building carrier plate that links into an integrated whole with steel bar truss and flat board (exempt from to tear open the die block), can bear cast in situ concrete dead weight and construction load. The production process is simple, and the transportation and construction are convenient; the building can be designed according to the traditional reinforced concrete floor without arranging a post-cast strip; ensuring the indoor clear height, and the obvious technical progress and the outstanding technical effect of relatively low construction cost.

The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:

a truss floor plate comprises a truss 10, a bottom die 20 and a connecting piece 30, wherein the truss 10 comprises an upper chord 11, a pair of lower chords 12 and a pair of web members 13, the upper chord 11 and the pair of lower chords 12 are arranged in parallel, the upper chord 11 is respectively connected with the pair of lower chords 12 through the pair of web members 13, the web members 13 are provided with convex bodies 14 which are bent outwards at the connecting positions of the web members and the lower chords 12, the connecting piece 30 is fixed on the truss 10, and the connecting piece 30 is connected with the bottom die 20 through a fastening piece 32.

Further, in order to reduce the cost and achieve a more secure connection between the connecting member 30 and the truss 10 and the bottom mold 20, as described above, the connecting member 30 is a hollow or solid cylinder or polygonal prism, one side or edge of which is fixedly connected to the truss 10, and the other opposite side is fixed to the bottom mold 20 by the fastening member 32.

Further, in order to achieve more convenient and reliable connection between the connecting member 30 and the bottom mold 20, as described above, in the truss floor slab, a through hole is formed in a position of the bottom mold 20 corresponding to the connecting member 30, the fastening member 32 penetrates through the through hole and is connected to the connecting member 30, and the fastening member 32 is any one of a screw, a bolt, a blind rivet, and a fastener.

Further, in order to overcome the defects of the traditional precast concrete bottom die, such as heavy weight, large thickness and large construction difficulty in the concrete pouring process, the bottom die 20 is a flat plate without steel bars in the body of the truss floor plate.

Further, in the truss floor slab, the flat plate without the steel bars in the body is a fiber cement flat plate. In order to ensure that the fiber cement flat plate can bear the self weight and the construction load of cast-in-place concrete in the construction process, the performance index of the fiber cement flat plate is controlled in the following range: apparent density of 1.0-1.5 g/cm3, water absorption of 20-35%, wet expansion rate of 0.2-0.3%, water retention and breaking strength of 10-20%, impact strength of 1.5-3.0 KJ/m2, aspect ratio of 55-65%, and breaking strength of 65-75%.

Further, in the truss floor slab as described above, the connecting member 30 is connected to the convex body 14 or the pair of lower chords 12 of the truss 10, and the connecting member 30 may be disposed either below the convex body 14 or the lower chord 12 or at the side of the convex body 14 or the lower chord 12.

Further, in the truss floor slab as described above, at least one truss 10 is provided, and when two or more trusses 10 are provided, they are arranged in parallel with each other.

The utility model discloses in:

the truss floor plate is a three-dimensional combined template which integrates a truss and a flat plate (a disassembly-free bottom die) so as to bear the self weight of cast-in-place concrete and construction load;

the fiber cement flat plate is a plate prepared by molding, pressurizing and autoclaving cement serving as a cementing material and organic synthetic fibers, inorganic mineral fibers or cellulose fibers serving as a reinforcing material; in order to ensure that the fiber cement flat plate can bear the self weight and the construction load of cast-in-place concrete in the construction process, the performance index of the fiber cement flat plate is controlled in the following range: apparent density of 1.0-1.5 g/cm3, water absorption of 20-35%, wet expansion rate of 0.2-0.3%, water retention and breaking strength of 10-20%, impact strength of 1.5-3.0 KJ/m2, aspect ratio of 55-65%, and breaking strength ratio of 65-75%;

the truss refers to a structure in which the rods are connected to each other. Preferably, the steel bars are used as rod members to form a plane or space structure with triangular units, and the plane or space structure comprises an upper chord, a pair of lower chords and web members which are connected with each other through resistance spot welding.

The connecting piece is a special connecting piece for connecting the truss and the fiber cement flat plate (bottom die).

The support refers to the horizontal and vertical supporting steel bars welded at two ends of the steel bar truss.

The utility model provides a truss floor board connects into an organic whole truss and dull and stereotyped (exempt from to tear open the die block) three-dimensional combination building carrier plate, is particularly useful for antidetonation and establishes precautions against earthquakes regional concrete and steel construction assembly type building below intensity 8 degrees and 8 degrees, has following beneficial technological effect.

1. The connecting piece has the function of a concrete protective layer cushion block

The utility model provides a truss floor board, connecting piece wherein can have the effect of concrete protective layer cushion concurrently, for increase in truss bottom chord reinforcing bar and the construction and reserve between the horizontal atress reinforcing bar of full length laid and the die block upside and have sufficient space, concrete is pour to this reserved space in the work progress, the thickness of the outermost reinforced concrete protective layer of assurance that can be fine guarantees truss bottom chord reinforcing bar and increases the life of the horizontal atress reinforcing bar of laying.

2. Simple production process and convenient transportation and construction

The utility model provides a truss floor board, equipment investment is few, and production simple process does not need during the preparation concrete and evaporates complicated processes such as foster, compares with precast concrete superimposed sheet, and the production workman and the bottom plate weight that significantly reduce, transportation construction convenience, production installation cost of labor are lower.

3. According to the traditional reinforced concrete floor design, no post-cast strip is needed

The utility model provides a truss floor board, die block thickness generally are 10-20 mm, do not participate in the structure atress calculation, and the floor design is according to ordinary cast in situ concrete floor design, and the design calculation is simple. The upper side of the bottom die can be laid with a full-length transverse stress reinforcing steel bar, and a concrete post-pouring belt is not needed at the joint of the plate joints, so that the construction is convenient.

4. Ensuring indoor clear height and relatively low construction cost

The utility model provides a truss floor board compares with precast concrete superimposed sheet, when being applied to well, small-span floor, reducible floor thickness guarantees the clear height of floor, and floor board die surfacing at the bottom of, fungible floor cast in situ concrete template reach and exempt from to plaster the requirement. The living comfort of the house is ensured, and the construction cost is reduced.

Drawings

FIG. 1 is a schematic structural view of a first embodiment of a truss floor panel provided in accordance with the present invention;

FIG. 2 is an enlarged partial cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic structural view of a second embodiment of a truss floor panel provided in accordance with the present invention;

FIG. 4 is an enlarged partial cross-sectional view A-A of FIG. 3;

FIG. 5 is a schematic structural view of a third embodiment of a truss floor panel provided in accordance with the present invention;

FIG. 6 is an enlarged partial cross-sectional view A-A of FIG. 5;

FIG. 7 is a schematic structural view of a fourth embodiment of a truss floor panel provided in accordance with the present invention;

FIG. 8 is an enlarged partial cross-sectional view A-A of FIG. 7;

FIG. 9 is a schematic structural view of a fifth embodiment of a truss floor panel provided in accordance with the present invention;

fig. 10 is a partially enlarged sectional view a-a of fig. 9.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

The structure, proportion, size, etc. of the present specification are only used to cooperate with the content disclosed in the specification, so as to be known and read by the people familiar with the technology, and not to limit the practical limit condition of the present invention, so the present invention has no technical essential meaning, and any structure modification, proportion relation change or size adjustment should still fall within the scope covered by the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

The following examples are for illustrative purposes only. The various embodiments may be combined, and are not limited to what is presented in the following single embodiment.

In this embodiment:

referring to fig. 1 to 2, the present invention provides a truss floor slab, including a plurality of trusses 10 arranged in parallel, a bottom mold 20 and a connecting member 30, where the trusses 10 include an upper chord 11, a pair of lower chords 12 and a pair of web members 13, the upper chord 11 and the pair of lower chords 12 are arranged in parallel, the upper chord 11 is connected to the pair of lower chords 12 through the pair of web members 13, the web members 13 are provided with outwardly bent protrusions 14 at the connection positions with the lower chords 12, the connecting member 30 is provided below the lower chords 12, and the connecting member 30 is fixed to the bottom mold 20 through a fastening member 32. Further, in order to reduce the cost and achieve a more secure connection of the connecting members 30 with the girder 10 and the bottom mold 20, the connecting members 30 are hollow or solid cylinders or polygonal columns having a cross section of a circle or a triangle, a quadrangle, a hexagon, etc. It will be readily appreciated that in the preferred embodiment, the side of the cylinder or polygonal prism is connected to the base mold 20, the side opposite thereto is connected to the lower chord 12, and in the case of a triangular prism, the side opposite to the side connected to the base mold 20 is connected to the lower chord 12. Further, in order to achieve more convenient and reliable connection between the connecting member 30 and the bottom mold 20, as for the truss floor slab, a through hole is formed in a position of the bottom mold 20 corresponding to the connecting member 30, the fastening member 32 penetrates through the through hole and is connected to the connecting member 30, and the fastening member 32 is any one of a screw, a bolt, a blind rivet and a buckle. In order to overcome the defects of the traditional precast concrete bottom die, such as heavy weight, large thickness and large construction difficulty in the concrete pouring process, the bottom die 20 is preferably a flat plate without steel bars in the body, and more specifically, a fiber cement flat plate can be used as the bottom die 20. In order to ensure that the fiber cement flat plate can bear the self weight and the construction load of cast-in-place concrete in the construction process, the performance index of the fiber cement flat plate is controlled in the following range: apparent density of 1.0-1.5 g/cm3, water absorption of 20-35%, wet expansion rate of 0.2-0.3%, water retention and breaking strength of 10-20%, impact strength of 1.5-3.0 KJ/m2, aspect ratio of 55-65%, and breaking strength of 65-75%.

In this embodiment:

referring to fig. 3 to 4, the present invention provides a truss floor slab, including a plurality of trusses 10 arranged in parallel, a bottom mold 20 and a connecting member 30, where the trusses 10 include an upper chord 11, a pair of lower chords 12 and a pair of web members 13, the upper chord 11 and the pair of lower chords 12 are arranged in parallel, the upper chord 11 is connected to the pair of lower chords 12 through the pair of web members 13, the web members 13 are provided with outwardly bent protrusions 14 at the connection positions with the lower chords 12, the connecting member 30 is provided at the side of the lower chords 12, and the connecting member 30 is fixed to the bottom mold 20 through a fastening member 32.

In this embodiment:

referring to fig. 5 to 6, in the truss floor slab of the present invention, the truss 10 uses steel bars as members to form a plane and space structure having triangular units, and includes an upper chord 11, a pair of lower chords 12, and a pair of wave web members 13, which are connected by resistance spot welding. The upper chord 11 and the pair of lower chords 12 are arranged in parallel, the upper chord 11 is connected with the wave-shaped tops of the pair of web members 13, the wave-shaped bottom of one web member 13 is connected with one lower chord 12, the wave-shaped bottom of the other web member 13 is connected with the other lower chord 12, the web members 13 are provided with outwards bent convex bodies 14 at the connection parts of the web members 13 and the lower chord 12, the pair of web members 13 are provided with a pair of convex bodies 14 at the connection parts, a connecting piece 30 is connected below the pair of convex bodies 14, the connecting piece 30 connects the pair of convex bodies 14 together, and the connecting piece 30 is fixed on the bottom die 20 through a fastening piece 32. Further, in order to reduce the cost and achieve a more secure connection of the connecting members 30 with the girder 10 and the bottom mold 20, the connecting members 30 are hollow or solid cylinders or polygonal columns having a cross section of a circle or a triangle, a quadrangle, a hexagon, etc. It will be readily understood that in the preferred embodiment, the side surface of the cylinder or polygonal column is connected to the base mold 20, and the side surface of the opposite side is connected to the convex body 14, and in the case of a triangular prism, the side surface opposite to the side surface connected to the base mold 20 is connected to the convex body 14. Further, in order to achieve more convenient and reliable connection between the connecting member 30 and the bottom mold 20, as for the truss floor slab, a through hole is formed in a position of the bottom mold 20 corresponding to the connecting member 30, the fastening member 32 penetrates through the through hole and is connected to the connecting member 30, and the fastening member 32 is any one of a screw, a bolt, a blind rivet and a buckle. Preferably, the upper chord of the steel bar truss is HRB 400-grade steel bars, the lower chord of the steel bar truss is CRB 600-grade steel bars, and the web members are HPB 300-grade steel bars.

In this embodiment:

referring to fig. 7 and 8, in the truss floor slab of the present invention, the truss 10 uses steel bars as members to form a plane and space structure having triangular units, and includes an upper chord 11, a pair of lower chords 12, and a pair of wave web members 13, which are connected by resistance spot welding. The upper chord 11 and the pair of lower chords 12 are arranged in parallel, the upper chord 11 is connected with the wave-shaped tops of the pair of web members 13, the wave-shaped bottom of one web member 13 is connected with one lower chord 12, the wave-shaped bottom of the other web member 13 is connected with the other lower chord 12, the web members 13 are provided with outwards bent convex bodies 14 at the connection positions of the web members 13 and the lower chords 12, the pair of web members 13 are provided with the pair of convex bodies 14 at the connection positions, connecting pieces 30 are respectively connected and arranged below the pair of convex bodies 14, and the connecting pieces 30 are fixed on the bottom die 20 through fasteners 32. Preferably, the upper chord and the lower chord of the steel bar truss adopt HRB 400-grade steel bars, and the web members adopt HPB 300-grade steel bars.

In this embodiment:

referring to fig. 9 and 10, in the truss floor slab according to the present invention, the truss 10 uses steel bars as members to form a plane and space structure having triangular units, and includes an upper chord 11, a pair of lower chords 12, and a pair of wave web members 13, which are connected by resistance spot welding. The upper chord 11 and the pair of lower chords 12 are arranged in parallel, the upper chord 11 is connected with the wave-shaped tops of the pair of web members 13, the wave-shaped bottom of one web member 13 is connected with one lower chord 12, the wave-shaped bottom of the other web member 13 is connected with the other lower chord 12, the web members 13 are provided with outwards-bent convex bodies 14 at the connection positions of the web members 13 and the lower chord 12, the pair of web members 13 are provided with the pair of convex bodies 14 at the connection positions, the side parts of the pair of convex bodies 14 are respectively connected with a connecting piece 30, and the connecting pieces 30 are fixed on the bottom die 20 through fasteners 32. Preferably, the upper chord and the lower chord of the steel bar truss adopt CRB600 grade steel bars, and the web members adopt HPB300 grade steel bars.

In this embodiment:

referring to fig. 1, 3, 5, 7 and 9, in the truss floor slab according to the present invention, five trusses 10 are disposed on a bottom mold 20, and the five trusses 10 are disposed in parallel. Preferably, the upper chord of the steel bar truss is CRB600 grade steel bars, the lower chord of the steel bar truss is HRB400 grade steel bars, and the web members are HPB300 grade steel bars.

To sum up, the utility model provides a truss floor board connects into an organic whole steel bar truss and fiber cement flat board (exempt from to tear open the die block) three-dimensional combination building carrier plate, has following technological progress and economic benefits.

2. Simple production process and convenient transportation and construction

The utility model provides a truss floor board, equipment investment is few, and production simple process does not need complex processes such as concreting and steam curing, compares with precast concrete superimposed sheet, and the production workman and the bottom plate weight that significantly reduce, transportation construction convenience, production installation cost of labor are lower.

4. Ensuring indoor clear height and relatively low construction cost

The utility model provides a truss floor board compares with precast concrete superimposed sheet, when being applied to well, small-span floor, reduces floor thickness, guarantees the clean height of indoor floor, and mould surfacing at the bottom of the board reaches the requirement of exempting from to plaster in fungible floor cast in situ concrete template. The living comfort of the house is ensured, and the construction cost is reduced.

5. Meets the requirements of national industrial policy and planning for developing assembly type buildings

The utility model provides a truss floor board is the most article component of present assembly type structure application mathematical theory, and project construction accords with the industry policy and the planning requirement of national development assembly type structure, optimizes, changes the type and upgrades, new and old kinetic energy conversion must play positive impetus to the structural adjustment of local assembly type structure prefabricated part article component.

6. Has wide market application prospect and development potential

The utility model provides a truss floor board, raw and other materials are easily purchased, and production facility small investment, production simple process, transportation construction convenience need not set up the post-cast strip, guarantees indoor net height, and engineering cost is lower relatively, has overcome the problem and the not enough of current precast concrete superimposed sheet existence, and the current and future assembled building of footing has extensive market perspective and development potentiality.

To sum up, the utility model discloses various shortcomings in the prior art have effectively been overcome and high industry value has.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. Truss floor board, including truss (10), die block (20), connecting piece (30), truss (10) include one last quarter (11), a pair of last quarter (12) and a pair of web member (13), last quarter (11) and a pair of last quarter (12) parallel arrangement each other, last quarter (11) are connected with a pair of last quarter (12) respectively through a pair of web member (13), web member (13) are equipped with bulge (14) of outwards bending in its and the position of being connected of last quarter (12), its characterized in that, connecting piece (30) are fixed on truss (10), connecting piece (30) pass through fastener (32) with die block (20) link together.

2. The truss floor slab as claimed in claim 1, wherein the connecting member (30) is a hollow or solid cylinder or polygonal prism having one side or edge fixedly connected to the truss (10) and the opposite other side fixed to the bottom mold (20) by the fastening member (32).

3. The truss floor slab as claimed in any one of claims 1 to 2, wherein the bottom mold (20) is provided with a through hole at a position corresponding to the connecting member (30), the fastening member (32) is connected to the connecting member (30) through the through hole, and the fastening member (32) is any one of a screw, a bolt, a blind rivet, and a snap fastener.

4. The truss floor panel as claimed in any one of claims 1 to 2, wherein the bottom form (20) is a flat plate without reinforcing bars in the body.

5. The truss floor slab of claim 4 wherein the unreinforced slab in the body is a fiber cement slab.

6. The truss floor panel as claimed in any one of claims 1 to 2, wherein the connecting member (30) is connected to the convex body (14) or a pair of lower chords (12) of the truss (10), the connecting member (30) being disposed below or to the side of the convex body (14)/lower chord (12).

7. The truss floor panel of claim 3, wherein the connectors (30) are attached to the lugs (14) or to a pair of lower chords (12) of the truss (10), the connectors (30) being disposed below or to the side of the lugs (14)/lower chords (12).

8. The truss floor panel of claim 4, wherein the connectors (30) are attached to the lugs (14) or to a pair of lower chords (12) of the truss (10), the connectors (30) being disposed below or to the side of the lugs (14)/lower chords (12).

9. The truss floor panel of claim 5, wherein the connectors (30) are attached to the lugs (14) or to a pair of lower chords (12) of the truss (10), the connectors (30) being disposed below or to the side of the lugs (14)/lower chords (12).

10. The truss floor panel as claimed in any one of claims 1 to 2, wherein at least one truss (10) is provided, and when there are two or more truss (10), they are arranged parallel to each other.