CN108756036A - A kind of assembled light steel bar truss floor support plate - Google Patents

Abstract

The present invention relates to the technical field of building floor decks, in particular to an assembled light steel truss floor deck, which includes a floor deck and a steel bar truss, and the steel bar truss includes an upper chord steel bar, a lower chord steel bar, and a connection between the upper chord steel bar and the lower chord The web steel bar of the steel bar includes a connecting piece. The connecting piece is provided with a first slot for clamping with the upper chord steel bar and a second slot for clamping with the lower chord steel bar. The connecting piece can be connected with the floor deck through the fastener. The connection is disassembled, and the steel bar truss is clamped on the connecting piece. In the present invention, the "single-piece" steel bar truss can be quickly assembled with the floor slab through the arrangement of the connecting piece provided with the first and second clamping grooves, and the floor slab can be disassembled after the strength of the poured concrete meets the requirements It can be reused, and at the same time, it is easy to reduce the damage of "over-reinforcement" or "less-reinforcement" on the floor, so that the floor deck is in an appropriate reinforcement configuration; the space between adjacent "single-piece" steel trusses is large, which is convenient for placing lightweight fillers .

Description

A prefabricated light steel truss floor deck

technical field

The invention relates to the technical field of building floor decks, in particular to an assembled light steel bar truss floor deck.

Background technique

With the diversification of modern building structures and uses, light-weight floor decks that require a large number of lofts, such as lofts, are more and more widely used. Most of the existing lightweight steel truss floor decks use a single piece of steel truss, that is, the steel truss includes an upper chord steel bar, a lower chord steel bar, and a web bar connecting the upper chord steel bar and the lower chord steel bar. A single piece of light steel truss is formed by reducing the lower chord steel bars. For example, Chinese patent application number: 201320354144.8, patent name: cast-in-place light steel truss composite floor, discloses a composite floor slab formed by welding light steel trusses and galvanized steel sheets to achieve a high degree of industrialization, and on-site pouring does not need to support light floor bearings plate. However, the strength of the galvanized sheet to the floor slab is not greatly increased and cannot be removed and reused, which wastes materials, and the galvanized sheet on the bottom surface of the floor slab brings inconvenience to the ceiling decoration of the floor.

Contents of the invention

For the existing light-weight steel truss floor decks, there are material wastes, galvanized sheets cannot be dismantled and reused, etc., the present invention provides an assembled light-weight steel bar truss floor decks, which are easy to assemble and disassemble on the floor decks. The board can be reused, and the utilization rate of the steel bar is high, and the floor surface is flat.

In order to achieve the above object, the technical solution provided by the present invention is: an assembled light steel truss floor deck, including a floor deck, a steel bar truss, and the steel bar truss includes an upper chord steel bar, a lower chord steel bar and a connecting upper chord steel bar and The web steel bar of the lower chord steel bar includes a connecting piece, the connecting piece is provided with a first slot for clamping with the upper chord steel bar and a second slot for clamping with the lower chord steel bar, and the connecting piece is connected to the floor deck through a fastener The connection is detachable, and the steel bar truss is clamped on the connecting piece.

Further, the first slot and the second slot on the same connecting piece open to the same side of the connecting piece, and each adjacent connecting piece or 2-3 connecting pieces are respectively clamped on both sides of the steel truss.

Further, the connectors are arranged in pairs on both sides of the steel bar truss, and the paired first locking groove and the second locking groove are relatively locked to the steel bar truss.

Further, the part between the first card slot and the second card slot is recessed, so that both sides of the first card slot and the second card slot are respectively upper ribs and lower ribs.

Further, the upper side of the upper rib is provided with a first slope, the first slope extends from the root side of the upper rib to the end side and slopes downward, and the upper side of the lower rib is also provided with a slope inclined to the first slope. The first bevel in the same direction.

Further, several grooves are provided on the side of the connector or on the upper side of the connector, and there are ribs between adjacent grooves.

Further, lightweight fillers are provided between adjacent steel bar trusses, and the lightweight fillers are arranged at intervals.

Further, the lightweight filling material is connected to the steel truss through a supporting connector.

Further, 2-3 rows of steel bar trusses are arranged at intervals on each floor deck and are connected through connectors and fasteners (7). The horizontal intervals of the pieces are distributed in the length direction of the floor deck perpendicular to the length direction of the steel truss, and the supports alternately protrude from the left and right sides of the floor deck

Further, the supporting member is provided with a fixing hole, and the floor deck is provided with a connecting hole, and one end of the fastener is connected to the connecting member sequentially through the fixing hole and the connecting hole.

Compared with the prior art, the present invention has the following beneficial effects:

1. The present invention enables the "single-piece" steel bar truss to be quickly assembled with the floor deck through the arrangement of the connectors provided with the first and second slots. The connectors and the floor deck consist of bolts and screws Fasteners and other fasteners can be detachably connected, and the floor deck can be disassembled and reused after the poured concrete strength meets the requirements. In the configuration of suitable reinforcement; "T" frame or triangular frame is set at the end of the steel bar truss to be fixedly connected to the beam of the space to be laid or welded on the steel beam, so that the assembled light steel bar truss floor deck of the present invention does not need to be supported, and can be easily It is convenient to pour concrete; at the same time, the space between adjacent "single-piece" steel trusses is large, which is convenient for placing lightweight fillers. The quality of the floor deck after pouring is lower and the sound insulation effect is better, especially for loft jumps. style floor decoration.

2. In the present invention, the connecting piece clamps the steel bar truss in the middle, so that the steel bar truss is not easy to turn over on one side, has strong stability, and the connecting piece can replace each other, easy to assemble, easy to industrialized production, and greatly improves the assembly style. Assembly efficiency of light steel truss floor deck.

3. In the present invention, the indentation between the first slot and the second slot greatly saves the materials used for connection and reduces the cost; the setting of the first slope and the second slope makes the installation of the steel truss fast and flanging, Reduce assembly costs.

4. In the present invention, the connecting piece is provided with grooves and ribs, so that the concrete has a greater grip on the connecting piece, and the connection with the concrete is firm.

5. The present invention. The supporting member protrudes from the left or right side of the floor deck or both sides of the floor deck. With the support of the support, the seam dislocation phenomenon is reduced or even disappeared; and the support is also removed when the floor slab is removed, which does not increase the extra workload caused by dismantling the support, so that the floor slab and the support have more Stable and efficient utilization.

Description of drawings

Fig. 1 is the schematic diagram of the structure of the assembled light steel truss floor deck of the invention;

Fig. 2 is a schematic diagram of a cross-sectional structure in the direction of Fig. 1A-A;

Fig. 3 is a schematic diagram of a cross-sectional structure in the direction of Fig. 1B-B;

Fig. 4 is the schematic diagram of connector structure;

Figure 5 is a schematic diagram of the side view of the connector;

Fig. 6 is a schematic view of the structure of the connecting piece viewed from above;

Fig. 7 is a schematic diagram of a truss floor deck with light-duty filling materials;

Fig. 8 is a schematic diagram of a steel truss floor deck provided with supports.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, and the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

A prefabricated light steel bar truss floor deck according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in Figures 1-7, an assembled light steel truss floor deck includes a steel bar truss 1, a floor deck 2, and a connector 4 connecting the floor deck 2 and the steel bar truss 1. The steel bar truss includes upper chord bars 11, lower chord bars 12, and web bars 13 welded to connect the upper chord bars and the lower chord bars. The upper chord bars 11 and the lower chord bars 12 are arranged in parallel and alternately in sheet form. The connector 4 includes a first slot 41 for clamping the upper chord steel bar 11 and a second slot 42 for clamping the lower chord steel bar 12. 4 on the same side. The connector 4 is provided with a groove 45 opposite to the first and second slots 41 , 42 and the top of the connector 4 , and the bottom of the connector 4 is provided with a threaded connection hole 44 . A portion between the first locking slot 41 and the second locking slot 42 is recessed, so that the first locking slot 41 and the second locking slot 42 are located between the protruding upper rib 401 and the lower rib 402 . The side of the connector 4 is provided with several grooves 45, and there are ribs 46 between the adjacent grooves 45, and the combination of the grooves 45 and the ribs 46 makes the connector 4 be subject to greater gripping force in the concrete, Bonds well to concrete.

The upper side of the upper rib 401 is provided with a first slope 4011, the first slope 4011 extends from the root side of the upper rib 401 to the end side of the upper rib 401 and slopes downward. Similarly, the upper side of the lower rib 402 is also provided with a second slope 4021 in the same direction as the first slope 4011 .

The connectors 4 are clamped at intervals on the upper and lower chord steel bars of the single-piece steel bar truss, and the first clamping groove 41 and the second clamping groove 42 of each adjacent connector 4 are oppositely arranged. Therefore, a plurality of connectors 4 are arranged on both sides of the steel truss gradually, and the threaded connection holes 44 are detachably connected to the floor deck 2 through fasteners 7, and the connecting bars 4 and the steel truss 1 clamped with the connectors 4 can be The disassembled ones are fixed on the floor deck 2. 2-3 rows of single-piece steel bar trusses 1 are arranged at intervals on each of the floor decks 2, and the matching light steel bar truss floor decks are convenient for transportation and assembly.

The method of installing the steel bar truss 1 on the floor deck 2 can be as follows: first, drill through holes at the set position of the floor deck 2, and the connectors 4 are fixed on the side of the floor deck 2 by bolts to form 2-3 rows, each row The connecting pieces 4 on the top are arranged at intervals, and the openings of the first slot and the second slot of the adjacent or spaced 2-3 connecting pieces are oppositely arranged; 4. The upper end, the first slot, and the second slot are clamped. Since the connector has elastic deformation capability and the connector is provided with a slope, the steel bar truss can be pressed into the first slot and the second slot from top to bottom.

Of course, by first installing the connecting piece 4 on the steel truss, and then fixing the connecting piece on one side of the floor slab by bolts, the rapid assembly of the steel truss and the floor slab can also be realized.

Since the steel bar trusses connected to the floor deck are sheet-shaped, non-triangular structure steel bar trusses invented by the invention, therefore, when the floor deck is installed, multi-row light steel bar truss floor decks are arranged side by side, and the steel bar trusses are 1 interval apart. Set, the steel bar truss 1 is horizontally connected with distribution bars 6, and the distribution bars 6 are bound and connected with the upper and lower chord bars of the steel bar truss respectively, and a cuboid space is formed between the distribution bars 6, the upper chord bars 41 and the lower chord bars 42, which is convenient for placing lightweight fillers The lightweight filling material 5 is connected to the steel bar truss by existing supporting connectors or tying and other common methods in existing construction, so that the floor deck after pouring is light in weight, heat-preserving and sound-proof.

Further, it includes a support 3, the fastener 7 is a bolt, the support 3 is connected to the side of the floor deck 2 away from the steel truss 1, and the support 3 is distributed at intervals in the lateral direction along the length of the floor deck 2. The direction is perpendicular to the length direction of the steel bar truss 1, and the support members 3 alternately protrude from the left and right sides of the floor deck 2, that is, as shown in Figure 8, the right end of a support member 3 protrudes from the right side of the floor deck 2, and the left end is indented On the left side of the floor deck 2, the adjacent supporting member 3 is the opposite, the right end is indented into the right side of the floor deck 2, and the left end is stretched out from the left side of the floor deck 2. The floor deck 2 is provided with a connection hole 21, the support member 3 is provided with a fixing hole 31, the front end of the fastener 7 passes through the fixing hole 31, the connection hole 21 is connected with the threaded hole of the connector 4 in turn, The support member 3 and the floor deck 2 are connected with the steel bar truss 1 . In some embodiments, the support member 3 is connected to the floor deck 2 alone, and the floor deck 2 is connected to the connector 4. The connection of the support member 3, the floor deck 2 and the connector 4 does not share fasteners, and the floor deck can be reused. There is no need to separate the bearing plate 2 and the support member 3 .

The support member 3 is C-shaped steel, and the fixing hole 31 is a round through hole, of course, it can also be set as an oblong through hole. The length of the support member 3 is equal to or smaller than the width of the floor deck 2 . The floor deck 2 can be arranged and connected to several steel bar trusses 1 in the transverse direction. In this embodiment, two steel bar trusses 1 are parallel and parallel connected to the floor deck 2 .

The supporting member 3, the floor deck 2 and the steel truss 1 are assembled in the factory or on the construction site through the connecting member 4, which is not restricted by the environment and weather, has high production efficiency, and can be produced automatically by using equipment. The assembled steel truss floor decks are transported to the construction site for splicing. Since the supports 3 alternately protrude around the floor decks 2, any two assembled steel bar truss floor decks can be spliced together.

In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "length", "width", "upper", "lower", "front", "rear", "left", " The orientations or positional relationships indicated by "right", "vertical", "horizontal", "top", and "bottom" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and It is not to indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, or operate in a particular orientation, and thus should not be construed as limiting the invention.

The present invention and its implementations have been schematically described above, and the description is not restrictive. What is shown in the drawings is only one of the implementations of the method of the present invention, and is not actually limited thereto. Therefore, if a person of ordinary skill in the art is inspired by it, without departing from the inventive concept of the present invention, and without creatively designing a method and embodiment similar to the technical solution, it shall fall within the scope of protection of the present invention.

Claims (10)

1. An assembled light steel truss floor deck, including a floor deck (2), a steel truss (1), and the steel truss (1) includes an upper chord steel bar (11), a lower chord steel bar (12) and connecting The web steel bar (13) of the upper chord steel bar (11) and the lower chord steel bar (12) is characterized in that it includes a connecting piece (4), and the connecting piece (4) is provided with a first clamping joint with the upper chord steel bar (11). The card slot (41) and the second card slot (41) clamped with the lower chord steel bar (12), the connecting piece (4) is detachably connected with the floor deck (2) through the fastener (7), the The steel bar truss (1) is clamped on the connector (4). 2. The prefabricated light steel truss floor deck according to claim 1, characterized in that the first slot (41) and the second slot (42) on the same connector (4) are connected to the connector (4) ) opening on the same side, and each adjacent connecting piece (4) or 2-3 connecting pieces (4) apart are clamped on both sides of the steel truss (1). 3. The prefabricated light steel truss floor deck according to claim 1, characterized in that the connectors (4) are arranged in pairs on both sides of the steel truss (1), and the paired first slots ( 41) and the second clamping groove (42) are relatively engaged with the steel bar truss. 4. The prefabricated light steel truss floor deck according to claim 2, characterized in that, the part between the first slot (41) and the second slot (42) is concave, so that the first Both sides of the slot (41) and the second slot (42) are respectively an upper rib (401) and a lower rib (402). 5. The assembled light steel truss floor deck according to claim 4, characterized in that, the upper side of the upper rib (401) is provided with a first slope (4011), and the first slope (4011) is formed from the upper rib The base of the plate 401 extends laterally toward the end (4011) and slopes downward, and the upper side of the lower rib (402) is also provided with a second slope (4012) in the same direction as the first slope (4011). 6. The prefabricated light steel truss floor deck according to claim 2, characterized in that several grooves (45) are provided on the side of the connector (4) or on the upper side of the connector (4), adjacent to the Ribs (46) are formed between the grooves (45). 7. The prefabricated light steel truss floor deck according to any one of claims 1-6, characterized in that light fillers (5) are provided between adjacent steel trusses (1), and the light Quality filling materials (5) are set at intervals. 8. The prefabricated light reinforced truss floor deck according to claim 7, characterized in that the lightweight filler (5) is connected to the reinforced truss through a supporting connector. 9. The prefabricated light steel truss floor deck according to any one of claims 1-6, characterized in that, each floor deck (2) is arranged in 2-3 rows at intervals through the connectors (4) The steel truss (1) connected with the fastener (7), the floor deck (2) is connected with the support (3) on the side away from the steel truss (1), and the support (3) is distributed at intervals in the transverse direction The length direction of the floor deck (2) is perpendicular to the length direction of the steel bar truss (1), and the supports (3) alternately protrude from the left and right sides of the floor deck (2). 10. The assembled light-duty reinforced truss floor deck according to claim 7, characterized in that the support (3) is provided with fixing holes (31), and the floor deck (2) is provided with connecting holes ( 21), one end of the fastener (7) is connected to the connecting piece (4) through the fixing hole (31) and the connecting hole (21) in sequence.