CN220247339U - Novel steel bar truss floor carrier plate free of form removal and construction structure thereof - Google Patents

Abstract

The utility model discloses a novel steel bar truss floor support plate free of form removal and a construction structure thereof. The steel bar truss floor support plate comprises a bottom die steel plate, wherein a plurality of groups of web member steel bars are arranged on the bottom die steel plate along the transverse direction at intervals, each group of web member steel bars comprises two web member steel bars which are arranged in a splayed symmetrical mode, an upper chord steel bar which is arranged along the transverse direction is connected between the upper parts of the two web member steel bars of each group, and lower chord steel bars which are arranged along the transverse direction are connected to the lower parts of the two web member steel bars of each group. The construction structure comprises the novel steel bar truss floor support plate free of form removal and further comprises a beam template which is longitudinally arranged. The galvanized steel sheet at the bottom of the truss floor support plate is used as a template, so that the floor support plate can omit the procedures and the cost of formwork supporting and formwork removing, is attractive and durable, can reduce the work load of site reinforcement binding by about 70%, can greatly improve the construction efficiency and can reduce the construction cost.

Description

A new formwork-free steel truss floor deck and its construction structure

Technical field

The utility model belongs to the technical field of building floor decking construction, and specifically relates to a new formwork-free steel truss floor decking and its construction structure.

Background technique

Steel structure building construction continues to develop, and the traditional construction method of cast-in-place slabs is difficult to keep up with the construction speed of steel structures for the main body of the building, thus affecting the overall construction progress. The construction of cast-on-site slabs requires the construction of formwork, scaffolding and other auxiliary facilities, resulting in an overall disjointed construction process.

Utility model content

The purpose of this utility model is: this utility model provides a new type of steel truss floor decking and its construction structure that does not require removal of formwork, and solves the problem of low construction efficiency of the traditional on-site cast slab construction method.

The galvanized steel plate at the bottom of the truss floor deck of this utility model is used as a formwork. The floor deck can save the process and cost of formwork support and removal, is beautiful and durable, and can reduce the workload of on-site steel bar binding by about 70%, and can significantly Improve construction efficiency and reduce construction costs. In addition, the steel bars are evenly arranged, the spacing between the upper and lower steel bars and the thickness of the concrete protective layer can be fully guaranteed, creating favorable conditions for improving the quality of floor slab construction.

The purpose of this utility model is achieved through the following technical solutions:

A new formwork-free steel truss floor bearing plate includes a bottom formwork steel plate. The bottom formwork steel plate is provided with several groups of web steel bars arranged transversely and at intervals. Each group of web bar steel bars includes two symmetrically arranged in a figure-eight shape. The upper parts of the two web bar reinforcements in each group are connected with upper chord steel bars arranged transversely, and the lower parts of the two web bar reinforcements in each group are connected with lower chord steel bars arranged transversely.

Further, the web steel bars include alternating facade triangular sections and horizontal U-shaped sections. The upper end corners of the facade triangular sections are connected to the upper chord steel bars. The lower two corners of the facade triangular sections are connected to the lower chord steel bars. The horizontal U-shaped sections are connected alternately. The shape section is connected to the bottom formwork steel plate.

Further, the bottom mold steel plate is a galvanized steel plate.

Further, it also includes end supports located at the ends of the upper and lower chord steel bars. The end supports include interconnected vertical steel bars of the supports and horizontal steel bars of the supports. The vertical steel bars of the supports are connected between the upper chord steel bars and the bottom formwork. Between the steel plates, the horizontal steel bars of the support are connected between the two lower chord steel bars.

Further, one end of the bottom mold steel plate is provided with a buckling part A, and the other end of the bottom mold steel plate is provided with a buckling part B that cooperates with the buckling part A.

Further, the bottom mold steel plate is provided with a boss portion, and the boss portion is connected to the web bar steel bar.

A construction structure for a new formwork-free steel truss floor deck, which includes the above-mentioned new type steel truss floor deck without demolition, and also includes a beam formwork arranged longitudinally, and the beam formwork is connected to two adjacent bottom formworks. Between the steel plates, the upper end of the beam formwork is connected to the bottom formwork steel plate. The beam formwork is equipped with steel bars in the beam that extend above the bottom formwork steel plate. Transition steel bars are used between the upper chord steel bars and the lower chord steel bars on the two adjacent bottom formwork steel plates. Connection, the two directly adjacent bottom formwork steel plates are connected through buckling.

Further, it also includes a support frame, which supports the three end faces of the beam formwork through wooden squares, and the beam formwork and the upper wooden squares are connected through iron nails.

Furthermore, the bottom formwork steel plate is provided with plate reinforcements arranged in the same direction as the upper chord steel bars.

Further, the two adjacent bottom formwork steel plates are arranged in opposite directions relative to the beam formwork. The upper chord steel bars on the two adjacent bottom formwork steel plates are connected by transverse upper chord connecting steel bars. The two adjacent bottom formwork steel plates are spaced apart. The lower chord steel bars on the formwork steel plate are connected by transverse lower chord connecting steel bars, and the lower chord steel bars are connected by longitudinal distributed bars.

Further, the two adjacent bottom formwork steel plates are arranged in opposite directions relative to the beam formwork, and the upper chord steel bars on the two adjacent bottom formwork steel plates are connected through transverse support negative reinforcements. The lower chord steel bars on the bottom formwork steel plate are connected by transverse distributed bars.

Further, among the two adjacent bottom formwork steel plates, one of the opposite beam formworks is arranged in a forward direction, and the other opposite beam formwork is arranged in a reverse direction, and the upper chord steel bars on the two adjacent bottom formwork steel plates pass through The horizontal bearings are connected by negative reinforcement, and the lower chord steel bars on the two adjacent bottom formwork steel plates are connected by horizontal distributed reinforcement.

Beneficial effects of this utility model:

1. The new steel truss floor deck realizes mechanized production, which is conducive to the uniform spacing of steel bars and the consistent thickness of the concrete protective layer, ensuring the quality of concrete floor pouring and molding.

2. The prefabricated steel truss floor deck can significantly reduce the amount of on-site steel bar binding work, speed up the construction progress, increase construction safety guarantee, and achieve civilized construction.

3. Steel truss floor decking is the most common type of floor decking, and the use of steel bars in the steel truss floor decking also makes it more stable and has a longer service life.

4. Compared with ordinary profiled steel plates, the bottom plate of the steel truss floor deck is only used as a formwork. The thinnest steel plate can be used as much as possible, with a thickness of only 0.5mm, which reduces its cost to a certain extent. At the same time Floor slabs cast using steel truss floor decks are 30-50mm thicker than traditional concrete floor slabs. If the building is required to have the same clear space, each floor of the building can save 30-50mm of space in construction costs, which is more obvious for high-rise buildings. Savings investment advantages.

5. After the construction is completed, the steel truss is completely wrapped in concrete, and the poured concrete protective layer has a uniform thickness, and the floor is made of galvanized steel plate, which has good anti-corrosion properties.

The aforementioned main scheme of the present utility model and its further options can be freely combined to form multiple schemes, all of which are schemes that can be adopted and claimed for protection by the present utility model; and in the present utility model, (each non-conflicting choice) between choices and Other options can also be combined freely. After understanding the solution of the present utility model, those skilled in the art will understand that there are many combinations according to the existing technology and common sense, all of which are the technical solutions to be protected by the present utility model, and an exhaustive list will not be made here.

Description of drawings

Figure 1 is a structural elevation of the steel truss floor deck of the present utility model.

Figure 2 is a structural side view (section) of the steel truss floor deck of the present utility model.

Figure 3 is a structural side view of the end support of the steel truss floor deck of the present utility model.

Figure 4 is a schematic diagram of the arrangement of gluten in the construction structural plate of the present invention.

Figure 5 is a structural schematic diagram of a node of the construction structure of the present utility model.

Figure 6 is a structural schematic diagram of the second node of the construction structure of the present utility model.

Figure 7 is a schematic structural diagram of the three nodes of the construction structure of the present utility model.

Figure 8 is a schematic diagram of the buckling structure of the steel truss floor deck of the construction structure of the present utility model.

In the picture: 1-upper chord steel bar, 2-lower chord steel bar, 3-web bar steel bar, 4-bottom form steel plate, 5-end support, 6-support vertical steel bar, 7-support horizontal steel bar, 8-buckle Joint part A, 9-fastening part B, 10-boss part, 11-plate reinforcement, 12-support frame, 13-beam formwork, 14-timber square, 15-beam inner steel bar, 16-upper chord connecting steel bar, 17 -Bottom chord connecting steel bars, 18-iron nails, 19-distribution bars, 20-bearing negative bars.

Detailed ways

The following non-limiting examples serve to illustrate the invention.

Example 1

Referring to Figures 1 to 3, a new formwork-free steel truss floor bearing plate includes an upper chord steel bar 1, a lower chord steel bar 2, a web steel bar 3, a bottom formwork steel plate 4, and an end support 5 (including the vertical support of the support). The axial steel bar 6 and the support horizontal steel bar 7), the fastening part A 8, the fastening part B 9 and the boss part 10.

Referring to Figures 1 and 2, the bottom formwork steel plate 4 is a 0.5mm thick galvanized steel plate used as the bottom formwork. The bottom formwork steel plate 4 is provided with several groups of web bar steel bars 3 (diameter 4.5mm) arranged transversely and at intervals. Each group of web bar steel bars 3 includes two symmetrically arranged in a figure-eight shape. The two web bar steel bars 3 in each group There are upper chord steel bars 1 (diameter 10mm/8mm) arranged laterally, welded and connected between the upper parts of each group, and lower chord steel bars 2 (diameter 10mm/8mm) arranged laterally are welded and connected to the lower parts of the two web steel bars 3 of each group.

Each web rod steel bar 3 includes alternating facade triangular sections and horizontal U-shaped sections. The upper end corners of the facade triangular section are welded and connected to the upper chord steel bar 1, and the lower two corners of the facade triangular section are welded and connected to the lower chord steel bars 2. The horizontal The U-shaped section is welded to the boss portion 10 on the bottom formwork steel plate 4 to form an upper steel truss structure.

Referring to Figure 3, it also includes an end support 5 located at the ends of the upper chord steel bar 1 and the lower chord steel bar 2. The end support 5 includes a support vertical steel bar 6 and a support horizontal steel bar 7 that are welded to each other. The vertical steel bar 6 is welded and connected between the upper chord steel bar 1 and the bottom form steel plate 4. The horizontal steel bar 7 of the support is welded and connected between the two lower chord steel bars 2. The end supports 5 are used to pair the ends of the upper chord steel bar 1 and the lower chord steel bar 2. The base is supported and fixed.

One end of the bottom mold steel plate 4 is provided with a buckle part A 8, and the other end of the bottom mold steel plate 4 is provided with a buckle part B 9 that cooperates with the buckle part A 8. The connection between the buckle part A 8 and the buckle part B 9 is used. The fastening connection between the two directly adjacent bottom formwork steel plates 4 is realized to avoid slurry leakage in the connection gap. The bottom mold steel plate 4 is also provided with a boss portion 10, and the boss portion 10 is welded to the web bar steel bar 3.

Example 2

Referring to Figures 4 to 8, a construction structure of a new formwork-free steel truss floor deck includes the formwork-free new steel truss floor deck of Embodiment 1, and also includes slab reinforcements 11, support frames 12, and beams. Formwork 13, wooden squares 14, beam internal steel bars 15, upper chord connecting steel bars 16, lower chord connecting steel bars 17, iron nails 18, distribution bars 19 and bearing negative bars 20.

The support frame 12 adopts a buckle-type steel pipe support frame, and the support frame 12 is used to support the beam formwork 13, thereby realizing the fixed installation of the beam formwork 13. The beam formwork 13 is arranged longitudinally. At the same time, the beam formwork 13 is connected between two adjacent bottom formwork steel plates 4 (that is, there are two bottom formwork steel plates 4 that are spaced apart). The upper end of the beam formwork 13 is connected to the bottom formwork steel plate 4. By using the beam The formwork 13 supports the bottom formwork steel plate 4 to realize the fixed installation of the steel truss floor bearing plate. The beam formwork 13 is provided with internal beam reinforcement bars 15 extending above the bottom formwork steel plate 4. The internal beam reinforcement bars 15 are the internal steel reinforcement skeleton of the beam structure after it is poured.

The upper chord steel bars 1 and the lower chord steel bars 2 on the two adjacent bottom formwork steel plates 4 are connected by transition steel bars. The transition steel bars are used to connect the steel bar trusses on the two adjacent bottom formwork steel plates 4 into one body to ensure the overall structure. To make it stronger, the transition steel bars can also be connected to the steel bars 15 inside the beam to further enhance the connection strength.

Referring to Figure 8, two directly adjacent bottom formwork steel plates 4 (i.e., two bottom formwork steel plates 4 with overlapping joints) are connected by snapping, that is, the snapping portion A 8 of one bottom formwork steel plate 4 is snappingly connected. On the fastening portion B 9 of the other bottom form steel plate 4, this kind of bending and folding structure can be used to connect the ends of the two bottom form steel plates 4, or to use multiple bending structures to realize the connection. Sealing effect.

Referring to Figure 4, the bottom formwork steel plate 4 is provided with plate reinforcements 11 arranged in the same direction as the upper chord reinforcement 1. When there is a spacing a between the plate reinforcements 11 that is affected by the upper chord reinforcement of the truss, the gluten close to the upper chord reinforcement can be directly tied with it. At this time, the spacing is b, and the subsequent gluten spacing will continue to be a.

The beam formwork 13 has a U-shaped cross-section structure. There are wooden squares 14 on the outside of the beam formwork 13. The support frame 12 supports the three end faces of the beam formwork 13 through the wooden squares 14, and connects the bottom formwork steel plate 4 and the upper wooden square 14. are connected through iron nails 18 to realize the support of the beam formwork 13 to the bottom formwork steel plate 4.

There are three positional relationships between the two adjacent bottom formwork steel plates 4 relative to the beam formwork 13. Each positional relationship corresponds to a different type of connection node, and the description is made with the beam formwork 13 as the longitudinal arrangement.

Referring to Figure 5, in the first type, two adjacent bottom formwork steel plates 4 are arranged in opposite directions relative to the beam formwork 13, and the upper chord steel bars 1 on the two adjacent bottom formwork steel plates 4 are connected by transverse upper chords. 16 is tied and connected, and the upper chord connecting steel bar 16 is an inverted U-shaped structure. The lower chord steel bars 2 on the two adjacent bottom formwork steel plates 4 are tied and connected by a transverse lower chord connecting steel bar 17, and the lower chord connecting steel bar 17 is a positive buckle. U-shaped structure, the lower chord steel bars 2 are tied and connected with longitudinal distribution bars 19.

Referring to Figure 6, in the second type, two adjacent bottom formwork steel plates 4 are arranged in opposite directions relative to the beam formwork 13, and the upper chord steel bars 1 on the two adjacently spaced bottom formwork steel plates 4 are connected by transverse bearings. The steel bars 20 are connected, and the support negative reinforcement 20 is an inverted U-shaped structure. The lower chord steel bars 2 on the two adjacent bottom formwork steel plates 4 are connected by transverse distribution bars 19, and the distribution bars 19 of this node are through Long arrangement.

Referring to Figure 7, in the third type, among the two adjacent bottom formwork steel plates 4, one of the opposite beam formwork 13 is arranged in a forward direction, and the other opposite beam formwork 13 is arranged in a reverse direction. The two adjacent bottom formwork steel plates are spaced apart. The upper chord steel bars 1 on the two adjacent bottom formwork steel plates 4 are connected by transverse support negative reinforcements 20. The support negative reinforcements 20 are inverted U-shaped structures. The distribution bars 19 are connected, and the distribution bars 19 of this node only extend to the end position in the reversely arranged bottom formwork steel plate 4.

A construction method for a new formwork-free steel truss floor deck. The construction structure of the formwork-free new steel truss floor deck includes the following steps.

Step 1, support frame erection: Before installing the steel truss floor deck, set up the entire hall support frame. The vertical and horizontal spacing of the vertical poles is 1200mm, and the step distance is 1500mm. The distance between the vertical sweeping pole and the floor surface is ≤550mm. The adjustable bracket of the formwork bracket extends out of the top horizontal pole. The length is ≤650mm, and the exposed length of the screw rod is ≤400mm. The length of the adjustable bracket inserted into the vertical pole shall not be less than 150mm. The top of the vertical pole adopts an adjustable support, and the number of steel pipes in the support is two.

Step 2, install the beam formwork on the support frame: Use the support frame as the support base to install and fix the beam formwork, and support the outside of the beam formwork with wooden squares to prevent the beam formwork from expanding after pouring.

Step 3, install the steel truss floor decking: After the beam formwork is installed and before the steel truss floor decking is laid, place the base line when laying the slab according to the starting position shown in the drawing, align it with the base line, and install the first slab. , and install other boards in sequence, finishing with non-standard boards.

Fix the adjacent reinforced truss floor decking plates on the beam formwork. At the connection point between the reinforced truss floor decking plate and the beam formwork, the galvanized bottom formwork steel plate is flush with the beam edge on the side formwork of the beam formwork. The reinforced truss floor decking plate is then After positioning, the bottom formwork steel plate at its end and the side formwork of the beam or column are firmly fixed with iron nails. The distance between the iron nails is ≤200mm. The beam formwork is used to support and install the steel truss floor deck.

The two directly adjacent steel truss floor decks are connected by buckles. The connection between the floor decks is buckled. The hooks between the boards are tightly connected to ensure that there is no leakage of slurry when pouring concrete. At the same time, pay attention to the direction of arranging the boards. Be consistent.

Step 4. Wire pipe laying: The electrical junction box can be pre-embedded. It can be fixed on the galvanized plate first. Small holes of Φ30mm and below are allowed to be drilled. Drilling should be done carefully to avoid deformation of the steel truss floor deck and The bottom form of the truss and the galvanized bottom form steel plate is desoldered, which affects the appearance or causes slurry leakage. When laying pipelines, it is prohibited to pull or cut any steel bars of the steel trusses at will.

Step 5, tie the steel bars: place the steel bars in the beam, tie the slab reinforcements parallel to the direction of the steel truss floor deck, and the distribution bars (slab bottom bars) perpendicular to the direction of the steel truss floor deck.

Step 6, check and accept and pour concrete: Before concrete is poured, the installation of the steel truss floor deck and other projects should be completed and accepted. Debris on the floor deck (including porcelain rings on the studs) and dust, must be removed. Grease, etc., and finally the concrete is poured and cured.

The above-mentioned basic examples of the present invention and its further optional examples can be freely combined to form multiple embodiments, and they are all applicable and claimed embodiments of the present invention. In the scheme of the present utility model, each optional example can be arbitrarily combined with any other basic example and optional example.

The above descriptions are only preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the present utility model. Within the protection scope of utility model.

Claims (10)

1. The utility model provides a novel steel bar truss building carrier plate of form removal exempts from, includes die block steel sheet (4), its characterized in that: the bottom die steel plate (4) on be equipped with a plurality of groups along transversely and interval arrangement's web member reinforcing bar (3), every group web member reinforcing bar (3) are including being splayed symmetrical arrangement's two, are connected with between the upper portion of two web member reinforcing bars (3) of every group along transversely arranging's last string reinforcing bar (1), the lower part of two web member reinforcing bars (3) of every group all is connected with along transversely arranging's lower string reinforcing bar (2).

2. The form removal-free novel steel bar truss floor carrier plate according to claim 1, wherein: the web member steel bar (3) comprises a vertical face triangular section and a horizontal U-shaped section which are alternately arranged, wherein the upper end angle of the vertical face triangular section is connected with the upper chord steel bar (1), the lower two angles of the vertical face triangular section are connected with the lower chord steel bar (2), and the horizontal U-shaped section is connected with the bottom die steel plate (4); the bottom die steel plate (4) is a galvanized steel plate.

3. The form removal-free novel steel bar truss floor carrier plate according to claim 1 or 2, wherein: the steel plate mold is characterized by further comprising end support seats (5) positioned at the ends of the upper chord steel bar (1) and the lower chord steel bar (2), wherein the end support seats (5) comprise support seat vertical steel bars (6) and support seat horizontal steel bars (7) which are connected with each other, the support seat vertical steel bars (6) are connected between the upper chord steel bar (1) and the bottom mold steel plate (4), and the support seat horizontal steel bars (7) are connected between the two lower chord steel bars (2).

4. The form removal-free novel steel bar truss floor carrier plate according to claim 1 or 2, wherein: one end of the bottom die steel plate (4) is provided with a buckling part A (8), and the other end of the bottom die steel plate (4) is provided with a buckling part B (9) matched with the buckling part A (8).

5. The form removal-free novel steel bar truss floor carrier plate according to claim 1 or 2, wherein: the bottom die steel plate (4) is provided with a boss part (10), and the boss part (10) is connected with the web member reinforcing steel bars (3).

6. The utility model provides a novel steel bar truss building carrier plate's of exempting from to disassemble construction structure, includes the novel steel bar truss building carrier plate of exempting from to disassemble of any of claims 1-5, still includes beam form (13) of longitudinal arrangement, its characterized in that: the beam template (13) is connected between two adjacent die block steel plates (4) at intervals, the upper end of the beam template (13) is connected with the die block steel plates (4), beam inner steel bars (15) extending to the upper parts of the die block steel plates (4) are arranged in the beam template (13), the upper chord steel bars (1) and the lower chord steel bars (2) on the two adjacent die block steel plates (4) at intervals are connected through transition steel bars, and the two directly adjacent die block steel plates (4) are connected through buckling.

7. The construction structure of the formwork-removal-free novel steel bar truss floor carrier plate, which is characterized in that: the beam template comprises a beam template body and is characterized by further comprising a supporting frame (12), wherein the supporting frame (12) supports three end faces of the beam template body (13) through battens (14), and the beam template body (13) is connected with the battens (14) at the upper end through iron nails (18);

the bottom die steel plate (4) is provided with plate surface ribs (11) which are arranged in the same direction with the upper chord steel bars.

8. The construction structure of the form removal-free novel steel bar truss floor carrier plate according to claim 6 or 7, wherein: the two bottom die steel plates (4) adjacent at intervals are oppositely arranged relative to the beam template (13), the upper chord steel bars (1) on the two bottom die steel plates (4) adjacent at intervals are connected through transverse upper chord connecting steel bars (16), the lower chord steel bars (2) on the two bottom die steel plates (4) adjacent at intervals are connected through transverse lower chord connecting steel bars (17), and longitudinal distributing steel bars (19) are connected between the lower chord steel bars (2).

9. The construction structure of the form removal-free novel steel bar truss floor carrier plate according to claim 6 or 7, wherein: the two bottom die steel plates (4) adjacent at intervals are reversely arranged relative to the beam template (13), the upper chord steel bars (1) on the two bottom die steel plates (4) adjacent at intervals are connected through transverse support negative bars (20), and the lower chord steel bars (2) on the two bottom die steel plates (4) adjacent at intervals are connected through transverse distribution bars (19).

10. The construction structure of the form removal-free novel steel bar truss floor carrier plate according to claim 6 or 7, wherein: one of the two opposite beam templates (13) of the two adjacent bottom die steel plates (4) at intervals is arranged in the forward direction, the other opposite beam template (13) is arranged in the reverse direction, the upper chord steel bars (1) on the two adjacent bottom die steel plates (4) at intervals are connected through transverse support negative bars (20), and the lower chord steel bars (2) on the two adjacent bottom die steel plates (4) at intervals are connected through transverse distribution bars (19).