CN216587251U - A kind of floor deck using sheet-type double-layer steel truss - Google Patents

Abstract

The utility model discloses the application belongs to the building element technical field to thermal, sound or noise isolated, absorption or reflection, specifically discloses an adopt double-deck steel bar truss's of piece formula building carrier plate, including template and a plurality of truss, the truss is including last chord steel bar, upper reinforcing bar, last chord steel bar and a plurality of connecting piece that are located same vertical plane, last chord steel bar and last chord steel bar pass through connecting piece fixed connection, the upper reinforcing bar is located between last chord steel bar and the last chord steel bar and is fixed with the connecting piece, outside the template was stretched out on the upper portion of last chord steel bar, upper reinforcing bar and the connecting piece of truss, be connected with horizontal muscle down between the last chord steel bar of a plurality of trusses. Compared with the prior art, this building carrier plate can save the reinforcing bar quantity greatly under the prerequisite that satisfies the atress intensity, can also reduce the production processes of building carrier plate, and when the floor concreting, need use bilayer structure reinforcing bar, last chord steel bar and the upper reinforcing bar on the truss can satisfy the requirement simultaneously.

Description

A kind of floor deck using sheet-type double-layer steel truss

technical field

The utility model belongs to the technical field of building components for isolating, absorbing or reflecting heat, sound or noise, and particularly discloses a floor deck adopting a sheet-type double-layer steel truss.

Background technique

In the construction process of the floor slab, the previous construction process is: fixing the laminated board → binding the steel bar → pouring the concrete layer. In order to make the floor construction site construction more convenient and the construction period faster, the pre-prepared floor slabs are used in the floor construction. Concrete, which can be formed into a floor after the concrete solidifies.

During the production of the floor deck, in order to ensure its stress strength, steel mesh will be laid in the floor deck. In order to facilitate the subsequent use of the steel bars, the floor deck will pre-fix steel trusses on the floor deck. At present, the steel truss adopts multiple longitudinal steel bars, and the multiple longitudinal steel bars are welded and connected as a whole.

After in-depth research by the applicant, the part of the steel truss is embedded in the floor deck, which can ensure the stable connection between the steel truss and the floor deck. However, the floor deck needs to lay steel mesh and pre-embed multiple steel trusses, which requires a large amount of steel bars, and the cost of steel bars is high. In addition, laying steel mesh and pre-embedding multiple steel trusses will also make the production process of the floor deck laborious and complicated. In addition, during floor construction, multiple double-layer steel bars are required on the formwork, which makes the floor construction more complicated.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide a floor deck using a sheet-type double-layer steel bar truss, so as to solve the problems of a large amount of steel bars and cumbersome use in the current floor deck.

In order to achieve the above purpose, the basic scheme of the present invention is as follows: a floor deck adopting a sheet-type double-layer steel truss, including a template and a plurality of trusses, the truss includes upper chord steel bars, upper-layer steel bars, Bottom chord steel bars and a plurality of connecting pieces, the upper chord steel bars and the lower chord steel bars are fixedly connected by the connecting pieces, the upper chord steel bars are located between the upper chord steel bars and the lower chord steel bars and are fixed with the connecting pieces, and the upper chord steel bars and the upper chord steel bars of the truss are connected to the connecting piece. The upper part of the piece protrudes out of the formwork, and the lower cross bars are connected between the lower chord bars of the multiple trusses.

When the floor deck is used at the construction site, it is necessary to lay double-layer two-way steel bars on the formwork. In this scheme, the part of the truss on the formwork is a double-layer structure, that is, a sheet-type double-layer truss, which reduces the need for laying double-layer trusses when using the formwork on the construction site. Steps to layer two-way reinforcement.

The working principle of this basic scheme is: when the floor deck in this scheme is produced, a number of trusses suitable for the width of the floor deck are used, the trusses are evenly spaced and placed vertically, and a plurality of lower transverse bars are erected on the lower chord steel bars. And fixed to form a truss overall structure. Then pour the formwork, put the assembled truss overall structure into the formwork, pay attention to the upper part of the connecting piece and the upper chord steel bars and the upper chord steel bars are exposed outside the formwork, and the lower part of the connecting piece and the lower chord steel bars are trapped in the floor deck. When the floor deck in this scheme is used, the formwork is fixed above the beam or wall, and equipment can be used to transport and hoist the formwork through the upper chord steel bars; Concrete is poured so that the formwork and the freshly poured concrete layer form the floor.

The beneficial effects of this basic program are:

1. The truss in the deck of this floor is a double-layer truss. Compared with the previous steel truss, the structure is simple. When it is used in the deck, because the upper chord steel bar, the upper layer steel bar, the lower chord steel bar and the connector are located on the same plane, it can be It can fully bear the longitudinal force of the floor and meet the requirements of the strength of the floor bearing plate.

2. During the production of the floor slab, multiple trusses are pre-fixed through the lower transverse bars, and the lower transverse bars and the lower chord bars form a rigid mesh, so there is no need to lay rigid meshes in the formwork, which further reduces the number of floor slabs. It can also make the truss can be firmly embedded in the formwork, so that the bearing strength of the floor bearing plate can be enhanced.

3. During the production of the floor deck, multiple trusses are welded together through the lower transverse bars, so that there is no need to lay reinforcement meshes and multiple steel trusses during the pouring process of the floor deck, which greatly saves the floor deck. The production process improves the production efficiency of the floor deck.

4. The lower transverse bars, lower chord bars, and lower parts of the connecting pieces of the floor deck are located in the formwork. After the construction of the floor is completed, the upper chord steel bars and the upper parts of the connecting pieces will be embedded in the cast-in-place concrete layer. During the subsequent long-term use of the floor slab , to avoid the separation of the floor deck and the concrete layer.

Compared with the prior art, under the premise of satisfying the force strength, the floor deck can greatly save the amount of steel bars, and can also reduce the production process of the floor deck. The upper chord reinforcement and upper reinforcement can meet the requirements.

Further, the upper chord reinforcing bars, the upper chord reinforcing bars and the lower chord reinforcing bars are arranged parallel to each other, and the connecting pieces are arranged obliquely to the upper chord reinforcing bars.

Beneficial effects: The upper chord steel bars, the upper chord steel bars and the lower chord steel bars are arranged in parallel to each other, which makes the overall structure of the truss in this scheme look more beautiful, and also makes the floor deck have stronger bearing capacity after use. The connector should be connected between the upper chord steel bar and the lower chord steel bar to bear the tensile force of the two. It is inclined to be set with the upper chord steel bar, and the stress can be dispersed to make the bearing strength stronger.

Further, the connecting piece includes a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece are inclined to the upper chord steel bar along different angles, and both ends of the connecting piece are welded to the upper chord steel bar and the lower chord steel bar respectively.

Beneficial effects: The connecting piece is arranged in this way to disperse the force in multiple directions, thereby enhancing the force strength of the truss. Both ends of the connecting piece are welded to the upper chord steel bar and the lower chord steel bar respectively, so that the truss in this scheme can be integrated. structure, and the whole is relatively firm.

Further, the first connecting piece and the second connecting piece are arranged in an "eight" shape or a "herringbone" shape.

Beneficial effect: the first connecting piece and the second connecting piece are arranged in the shape of "eight", which is more convenient for the two ends of the first connecting piece and the second connecting piece to be fixedly connected with the upper and lower chord steel bars. If the location is wider, the number of connectors connected in a truss will be reduced, thus further reducing the amount of reinforcement. The first connector and the second connector are arranged in a "herringbone" shape, the position occupied by one connector is narrow, and the connectors in a truss can be arranged in sequence, which is more conducive to enhancing the strength between the upper and lower chord steel bars. .

Further, the formwork includes a top plate, a thermal insulation and sound insulation layer, and a bottom plate in sequence from top to bottom, and the lower part of the truss is located in the top plate; the bottom plate is provided with a bottom plate rigid mesh, and the bottom plate rigid mesh includes transverse steel bars and longitudinal steel bars, The transverse steel bars are bent upward and pass through the thermal insulation and sound insulation layer and the top plate to form reinforcements.

Beneficial effects: the floor bearing plate has the function of thermal insulation and sound insulation, and when used for floor construction, the floors have the effect of thermal insulation and sound insulation. The rigid net of the bottom plate can enhance the strength of the bearing plate of the floor, and the reinforcements can firmly connect the bottom plate, the thermal insulation layer and the top plate together.

Further, upper transverse bars are connected between the upper chord bars of the plurality of trusses, and in the horizontal direction, the upper transverse bars are located between the two lower transverse bars.

Beneficial effect: In the manufacturing process of the floor deck, after a plurality of trusses are connected into a whole through the lower transverse bars, they are put into the formwork to form the floor deck; in this process, the lower chord steel bars are connected by the lower transverse bars and under the action of the template, It will be in a fixed position; but because the truss is a sheet structure, the connecting pieces of the truss and the top chord bars are on the same vertical plane, and the top chord bars and connecting pieces are easily offset from the original vertical plane. The stress of the truss. The setting of the upper cross bars can fix the upper chord bars of multiple trusses to prevent the upper chord bars and connectors on one truss from deviating from the vertical plane, so that the truss is always in the vertical plane, so that the floor deck is in use. The force is always in an ideal state. At the same time, when the floor deck is hoisted, the connection between the upper transverse bar and the upper chord steel bar can be selected as the hoisting point for hoisting, so as to avoid hoisting only the upper chord steel bar, and the upper chord steel bar will be bent unevenly and cause the truss to be damaged. In addition, the lower cross bars connect the lower chord bars of multiple trusses, and the upper cross bars connect the upper chord bars of multiple trusses, so that multiple trusses are connected by the upper cross bars and the lower cross bars to form a three-dimensional structure. The steel cage is used as a floor bearing. A part of the slab, whether it is the force strength of itself or the force strength of the floor slab after construction, is uniformly dispersed, and the force effect is better.

Further, the reinforcing member is positioned above the top plate and then bent, the bent portion of the reinforcing member is positioned below the upper chord steel bar, and a damping sleeve is provided outside the reinforcing member.

Beneficial effects: The upper part of the reinforcement is bent so that the upper part of the reinforcement acts as a hook, that is, the connection strength between the poured concrete layer and the floor deck is stronger through the upper part of the reinforcement; compared with the reinforcement buried in the top plate , it is easier to construct when the reinforcement extends out of the roof, and it is less likely to crack when the floor deck is used; the setting of the damping sleeve can reduce the transmission of sound in the floor deck.

Further, the bending portion of the reinforcement member and the reinforcement member are arranged at a angle of less than or equal to 90°.

Beneficial effect: the bending part is arranged in this way, and the hanging force is better and safer when the floor deck is used.

Further, the transverse reinforcement on the rigid mesh of the bottom plate is located below the longitudinal reinforcement, and the lower transverse reinforcement is located above the lower chord reinforcement.

Beneficial effects: The transverse steel bars on the rigid net of the bottom plate will be bent upwards to form reinforcements, which will bear part of the longitudinal force, and are arranged under the longitudinal steel bars. With the cooperation of the longitudinal steel bars, the force will be better. The lower chord reinforcement also bears the upward tensile force and is arranged under the lower transverse reinforcement, and the stress is enhanced.

Further, the thermal insulation and sound insulation layer is made of porous open-pore material, and a plurality of cavities are arranged between the bottom plate and the thermal insulation and sound insulation layer, and the cavities are holes and grooves provided on the upper surface of the bottom plate.

Beneficial effects: The porous open-cell material is a material with a large number of tiny gaps and holes that are connected inside and outside. When the sound wave enters the thermal insulation and sound insulation layer, it enters the material along the hole and causes the air in the hole to vibrate. Due to the viscous resistance of the air, heat conduction Therefore, most of the sound energy is converted into heat energy and consumed, so the thermal insulation and sound insulation layer of porous open-pore material eliminates most of the medium and high frequency sound waves in the sound waves. When the sound passes through the thermal insulation layer, the medium and high frequency sound will be weakened, and when the sound enters the cavity, the sound wave will cause the air to vibrate in the cavity, so that most of the sound energy is converted into heat energy and consumed, which is better for noise reduction. effect. The cavity is a hole and groove on the upper surface of the bottom plate, so that the sound wave forms multiple diffuse reflections on the wall of the hole and groove of the bottom plate, so that the sound energy is converted and consumed many times, and the noise reduction effect is further strengthened.

Description of drawings

Fig. 1 is the structural representation of floor deck embodiment 1 in this scheme;

Fig. 2 is the structural representation of floor deck embodiment 2 in this scheme;

Fig. 3 is the structural representation of floor deck embodiment 3 in this scheme;

Fig. 4 is the structural representation of floor deck embodiment 4 in this scheme;

Fig. 5 is the structural representation of floor deck embodiment 5 in this scheme;

Fig. 6 is the structural representation of the floor deck embodiment 6 in this scheme;

Fig. 7 is the longitudinal sectional view of the floor deck embodiment 6 in this scheme;

Fig. 8 is the transverse sectional view of the floor deck embodiment 6 in this scheme;

Fig. 9 is the transverse sectional view of floor deck embodiment 7 in this scheme;

Fig. 10 is the transverse sectional view of the floor deck embodiment 8 in this scheme;

Fig. 11 is the structural representation of floor deck embodiment 9 in this scheme;

Fig. 12 is a longitudinal cross-sectional view of Embodiment 9 of the floor deck in this solution.

Detailed ways

The following is further described in detail by specific embodiments:

Reference numerals in the accompanying drawings include: upper chord reinforcing bar 10, lower chord reinforcing bar 11, connecting piece 12, first connecting piece 121, second connecting piece 122, connecting reinforcing bar 13, upper reinforcing bar 14, formwork 20, lower transverse rib 21, side bars The top connecting table 22 , the end connecting table 23 , the upper cross bars 24 , the top plate 30 , the thermal insulation and sound insulation layer 31 , the bottom plate 32 , the bottom plate rigid net 33 , the reinforcement 34 , and the damping sleeve 341 .

Example 1

As shown in FIG. 1, a floor deck 20 using a sheet-type double-layer steel truss includes a template 20 and a plurality of trusses, and the truss includes upper chord steel bars 10, upper layer steel bars 14, and lower chord steel bars 11 (such as 8) and a plurality of connectors 12, in actual production, for the convenience of construction, the chord steel bars, the upper chord bars 14, the lower chord bars 11 and a plurality of connectors 12 will be dislocated, and the upper chord bars 10 and the lower chord bars 11 pass through the connectors 12. In the fixed connection, the upper part of the truss protrudes out of the template 20, and the lower cross bars 21 are connected between the lower chord bars 11 of the plurality of trusses (as shown in FIG. 8). In this embodiment, one formwork 20 adopts three trusses, and the three trusses are evenly spaced along the width direction of the formwork 20 .

The upper chord reinforcing bar 10, the upper chord reinforcing bar 14 and the lower chord reinforcing bar 11 are arranged parallel to each other. In this scheme, the upper chord reinforcing bar 10, the upper layer reinforcing bar 14 and the lower chord reinforcing bar 11 are parallel to the upper surface of the formwork 20. When the formwork 20 is placed horizontally, the upper chord reinforcing bar 10 and the upper chord reinforcing bar 14 The bottom chord bars 11 are in a horizontal position. The connecting piece 12 is inclined to the upper chord steel bar 10, and the distance between adjacent connecting pieces 12 is the same; in this embodiment, the connecting piece 12 includes a first connecting piece 121 and a second connecting piece 122, and the first connecting piece 121 and the second connecting piece The pieces 122 are disposed obliquely to the upper chord bar 10 at different angles. In order to ensure the force strength of the connecting piece 12, the first connecting piece 121 and the second connecting piece 122 are arranged in a "herringbone" shape, and the distance between adjacent connecting pieces 12 is 0-50 cm. In this embodiment, adjacent connecting pieces are preferably connected. Piece 12 has a distance of 0.

In order to facilitate the manufacture of the truss in this scheme, the two ends of the connecting piece 12 are welded to the upper chord steel bar 10 and the lower chord steel bar 11 respectively, the length direction of the truss is located at the end of the connecting piece 12, and the connecting steel bar 13 perpendicular to the upper chord steel bar 10 and the lower chord steel bar 11 is welded. . The upper chord reinforcing bar 10 and the lower chord reinforcing bar 11 in the truss are made of anti-seismic threaded steel commonly used in the market, and the connecting piece 12 is made of steel. According to the stress conditions of the upper chord steel bar 10, the lower chord steel bar 11 and the connecting piece 12 during use, the diameter of the connecting piece 12 is smaller than the diameter of the upper chord steel bar 10 and the lower chord steel bar 11, and the diameter of the lower chord steel bar 11 is smaller than the diameter of the upper chord steel bar 10.

The specific implementation process is as follows: the floor deck 20 in this embodiment is firstly placed with four trusses before production, evenly spaced and vertically placed, and a plurality of lower transverse bars 21 are horizontally erected on the lower chord steel bars 11. The lower transverse bars 21 It is perpendicular to the lower chord steel bar 11 and is welded and fixed to form the overall structure of the truss. When the floor deck 20 in this embodiment is produced, the formwork 20 is poured first, and then the assembled truss overall structure is put into the formwork 20. Note that the upper part of the connecting piece 12, the upper reinforcement bars 14 and the upper chord reinforcement bars 10 are exposed to the floor bearing. Outside the plate 20, the lower part of the connecting piece 12 and the lower chord steel bar 11 sink into the formwork, and the manufacturing of the floor deck 20 in this embodiment can be completed.

When the floor deck 20 in this scheme is in use, equipment is used to transport and hoist the floor deck 20 through the top chord steel bar 10. After the floor deck 20 is fixed, the top chord steel bar 10 is bound with steel bars or placed with steel mesh, and then Concrete is poured, the floor deck 20 and the freshly poured concrete layer form the floor slab.

Example 2

The difference between this embodiment and Embodiment 1 is that, as shown in FIG. 2 , in this embodiment, the first connecting member 121 and the second connecting member 122 are arranged in the shape of “eight”, and the distance between adjacent connecting members 12 , and the shortest spacing distance between the first connecting piece 121 and the second connecting piece 122 is 10-50 cm, the spacing distance between adjacent connecting pieces 12 in this embodiment, and the shortest distance between the first connecting piece 121 and the second connecting piece 122 The interval distances are equal.

By adopting the "eight"-shaped connector 12, so that there is a certain distance between the first connector 121 and the second connector 122, the number of connectors 12 used in the truss can be reduced, which can reduce the amount of steel bars used in the truss as a whole. .

Example 3

The difference between this embodiment and Embodiment 1 is that, as shown in FIG. 3 , in this embodiment, side connecting platforms 22 are provided on both sides of the lower end surface of the floor deck 20 .

The setting of the side connecting platform 22 is convenient for supporting the spliced part after the formwork 20 is spliced when the floor deck 20 is in use in this embodiment, so as to be fixed on the floor deck 20 in this embodiment.

Example 4

The difference between this embodiment and Embodiment 3 is that, as shown in FIG. 4 , the formwork 20 in this embodiment sequentially includes a top plate 30 , a thermal insulation and sound insulation layer 31 , and a bottom plate 32 from top to bottom, and the lower part of the truss is located in the top plate 30 . In this embodiment, the thermal insulation and sound insulation layer 31 is a porous open-cell material, that is, the porous open-cell material has a large number of tiny gaps and holes connected inside and outside. In this embodiment, the thermal insulation and sound insulation layer 31 is made of rock wool. A concave-convex cavity is formed between the bottom plate 32 and the thermal insulation and sound insulation layer 31. Specifically, holes and grooves can be provided on the upper surface of the bottom plate 32, or holes and grooves can be provided on the lower surface of the thermal insulation and sound insulation layer 31. The lower surface of the thermal insulation and sound insulation layer 31 is also provided with holes and grooves, and the first method is adopted in this embodiment. The shape of the holes can be wavy, zigzag, honeycomb, pulse wave or other irregular shapes. A shock-absorbing pad is laid in the top plate 30 or between the top plate 30 and the thermal insulation and sound insulation layer 31, or a shock-absorbing pad can be laid in the top plate 30 and between the top plate 30 and the thermal insulation and sound insulation layer 31 at the same time, and the shock-absorbing pad can be made of pearls Cotton, bubble film and other materials that can play a role in buffering and shock absorption. The bottom plate 32 is provided with a bottom plate rigid mesh 33. In this embodiment, the bottom plate rigid mesh 33 is made of rigid materials such as steel wire, steel bar, iron wire, etc., and is welded by the same kind of materials or different kinds of materials in a criss-cross manner. In this embodiment, the rigid mesh 33 of the bottom plate is formed by a plurality of transverse reinforcement bars and a plurality of longitudinal reinforcement bars interlaced to form a mesh structure.

Since the sound transmission between the upper and lower floors is mostly through the impact or vibration generated by the floor slab, the formwork 20 in this embodiment adopts various measures to weaken the transmission of the sound. That is, when the impact vibration is transmitted to the shock-absorbing pad on the top plate 30, the vibration force is buffered on the shock-absorbing pad and weakened, so that the high-frequency sound waves generated by the vibration are weakened at the same time, and the weakened sound waves enter the porous opening material. In the thermal insulation and sound insulation layer 31, the holes that communicate with the inside and outside of the porous open-pore material enter the material and cause the air in the holes to vibrate. Further eliminates most of the mid- and high-frequency sound waves in the sound waves. Finally, when the sound wave passes through the thermal insulation and sound insulation layer 31 and enters the hole in the bottom plate 32, the sound wave forms multiple diffuse reflections on the uneven hole wall, so as to convert and consume the sound energy of the middle and low frequencies, so as to improve the efficiency of the sound wave. Good for sound insulation.

Example 5

The difference between this embodiment and Embodiment 4 is that, as shown in FIG. 5 , in this embodiment, end connecting platforms 23 are provided at both ends of the lower end surface of the floor deck 20 , and there is no thermal insulation at the end connecting platforms 23 . Acoustic layer 31 and bottom plate 32 .

Example 6

The difference between this embodiment and Embodiment 4 is that, as shown in FIG. 6 , FIG. 7 , and FIG. 8 , the transverse steel bars of the bottom plate rigid mesh 33 are bent upward and pass through the thermal insulation and sound insulation layer 31 and the top plate 30 to form reinforcements 34 ; In this embodiment, the reinforcing member 34 is positioned above the top plate 30 and then bent. The bent portion of the reinforcing member 34 is located below the upper chord steel bar 10 and above the upper layer steel bar 14 . A damping sleeve 341 is provided outside the reinforcing member 34 .

On the one hand, the reinforcement 34 protruding from the top plate 30 is convenient for construction, and on the other hand, after the floor is constructed, the reinforcement 34 penetrates the formwork 20 and the floor, so that the hoisting of the formwork 20 is not easy to crack; in addition, the bending part of the reinforcement 34 It is convenient for the binding of steel bars during floor construction.

Example 7

The difference between this embodiment and Embodiment 5 is that, as shown in FIG. 9 , in this embodiment, the bent portion of the reinforcing member 34 is perpendicular to the reinforcing member 34 .

Example 8

The difference between this embodiment and Embodiment 5 is that, as shown in FIG. 10 , in this embodiment, the bent portion of the reinforcing member 34 and the reinforcing member 34 have an included angle structure of less than 90°, and the bent portion of the reinforcing member 34 is in the direction of the angle of 90°. The lower template 20 is inclined.

Example 9

The difference between this embodiment and Embodiment 6 is that, as shown in FIG. 11 and FIG. 12 , the upper cross bars 24 are connected between the upper chord bars 10 of the plurality of trusses in this embodiment. In the horizontal direction, the upper cross bars 24 are located at Between the two lower transverse ribs; in order to make the upper transverse rib 24 better in strength, the upper transverse rib 24 is also located at the midpoint between the first connecting piece 121 and the second connecting piece 122 .

The arrangement of the upper transverse bars 24 in this embodiment can keep each truss in a vertical state, and all the trusses form a reinforcement cage structure under the action of the upper transverse bars 24 and the lower transverse bars 21, thereby making the overall mechanical performance of the trusses better. When the floor deck in this embodiment is hoisted, the connection between the upper transverse bar 24 and the upper chord steel bar 10 can be selected as the hoisting point, where the steel bars are concentrated and the force strength is better, which can prevent the floor deck from being damaged due to hoisting. The dislocation arrangement of the upper cross bars 24 and the lower cross bars 21 makes the force strength of the whole truss in all directions balanced, and avoids the influence of weak force strength at a certain place during the use of the floor deck.

The above are only the embodiments of the present invention, and common knowledge such as well-known specific technical solutions and/or characteristics in the solutions are not described too much here. It should be pointed out that for those skilled in the art, under the premise of not departing from the technical solution of the present utility model, several modifications and improvements can also be made, which should also be regarded as the protection scope of the present utility model, and these will not affect the present utility model. The effect of the implementation of the utility model and the practicability of the patent. The scope of protection claimed in this application shall be based on the content of the claims, and the descriptions of the specific implementation manners in the description can be used to interpret the content of the claims.

Claims (10)

1. a floor deck adopting a sheet-type double-layer steel bar truss, comprising a template and a plurality of trusses, it is characterized in that: the truss comprises upper chord steel bars, upper layer steel bars, lower chord steel bars and multiple connectors that are positioned on the same vertical plane , the upper chord steel bar and the lower chord steel bar are fixedly connected through the connecting piece, the upper chord steel bar is located between the upper chord steel bar and the lower chord steel bar and is fixed with the connecting piece, and the upper chord steel bar of the truss, the upper chord steel bar and the upper part of the connecting piece protrude out of the template , and lower transverse bars are connected between the lower chord bars of multiple trusses. 2. a kind of floor deck adopting sheet type double-layer steel truss according to claim 1, is characterized in that, described upper chord steel bar, upper chord steel bar and lower chord steel bar are arranged in parallel with each other, and described connecting piece is arranged obliquely to upper chord steel bar . 3. A kind of floor deck using sheet-type double-layer steel truss according to claim 2, characterized in that, the connecting piece comprises a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece The pieces are inclined to the upper chord steel bars along different angles, and the two ends of the connecting piece are respectively welded on the upper chord steel bars and the lower chord steel bars. 4 . The floor deck using a sheet-type double-layer steel truss according to claim 3 , wherein the first connecting piece and the second connecting piece are arranged in an "eight" shape or a "herringbone" shape. 5 . 5. A kind of floor deck adopting a sheet-type double-layer steel truss according to any one of claims 1-4, wherein the formwork comprises a top plate, a thermal insulation and sound insulation layer, and a bottom plate in sequence from top to bottom, The lower part of the truss is located in the top plate; the bottom plate is provided with a bottom plate rigid mesh, the bottom plate rigid mesh includes transverse steel bars and longitudinal steel bars, the transverse steel bars are bent upward and pass through the thermal insulation and sound insulation layer and the top plate to form reinforcements. 6. A kind of floor deck adopting a sheet-type double-layer steel bar truss according to any one of claims 1-4, characterized in that, upper transverse bars are connected between the upper chord bars of a plurality of trusses, and in the horizontal direction, The upper cross bar is located between the two lower cross bars. 7. A kind of floor deck adopting a sheet-type double-layer steel truss according to claim 5, characterized in that, the reinforcing member is positioned above the top plate and then bent, and the bending portion of the reinforcing member is positioned below the upper chord steel bar , a damping sleeve is provided outside the reinforcement. 8 . The floor deck using a sheet-type double-layer steel truss according to claim 7 , wherein the bending portion of the reinforcing member and the reinforcing member are arranged at an angle of less than or equal to 90°. 9 . 9 . The floor slab using a sheet-type double-layer steel truss according to claim 8 , wherein the transverse reinforcement on the rigid mesh of the bottom plate is located below the longitudinal reinforcement, and the lower transverse reinforcement is located above the lower chord reinforcement. 10 . 10 . The floor deck using sheet-type double-layer steel trusses according to claim 9 , wherein the thermal insulation and sound insulation layer is a porous perforated material, and a space between the bottom plate and the thermal insulation and sound insulation layer is provided. 11 . There are several cavities, and the cavities are holes and slots provided on the upper surface of the bottom plate.

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