Demounting-free bottom die steel bar truss floor support plate abutted seam node

Abstract

The utility model relates to the technical field of building construction, in particular to a disassembly-free bottom die steel bar truss floor support plate abutted seam node which comprises a plurality of floor support plates, a steel bar truss is arranged on the top of each floor support plate, the two opposite sides of each floor support plate extend upwards to be provided with folding parts, and the folding parts are connected with the floor support plates. A cover plate is arranged between every two adjacent floor bearing plates, the cover plates are located above the floor bearing plates, the bottoms of the cover plates are provided with covering grooves, the covering grooves are matched with the two adjacent folded parts, and a plurality of fixing ribs are laid on the tops of the cover plates in the length direction of the cover plates at intervals. And each fixing rib is fixedly connected between the two adjacent steel bar trusses. The floor support plate has the effects of reducing the possibility of slurry leakage and improving the structural reliability and stability of the whole floor support plate.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a joint node of a steel bar truss floor deck without dismantling a bottom formwork. Background Art

[0002] In construction projects, steel truss floor decks are increasingly favored by the market due to their advantages such as standardization, factory production, stable quality, and short construction period. With the gradual development of prefabricated buildings, people pay more and more attention to the effects of prefabricated buildings, especially the pursuit of "original" clear water effects. However, most of the current steel truss floor decks will leak due to concrete pouring, and cannot produce clear water effects, which makes it difficult to meet people's quality and appearance requirements for steel frame floor decks. Utility Model Content

[0003] In response to the deficiencies in the above-mentioned prior art, the present application provides a joint node of a steel truss floor decking plate without the need for removal of the bottom formwork, which aims to improve the sealing between adjacent floor decking plates while adopting the construction method without the need for removal of the bottom formwork, reduce the possibility of leakage, and thus improve the quality and appearance of the finished product.

[0004] The above invention objectives of the present application are achieved through the following technical solutions:

[0005] A plurality of floor decking plates, each of which is provided with a steel truss on the top, each of which is provided with folded portions extending upward on opposite sides of the floor decking plates, a cover plate is provided between each two adjacent floor decking plates, the cover plate is located above the floor decking plates and has a covering groove on the bottom, the covering groove is matched with two adjacent folded portions, a plurality of fixing ribs are laid at intervals on the top of the cover plate along its own length direction, and each of the fixing ribs is fixedly connected between two adjacent steel trusses.

[0006] By adopting the above technical scheme, a cover plate is provided, which can provide a connection platform between two adjacent floor decking plates, ensuring a firm connection between the adjacent floor decking plates, and by providing a folded portion and a covering groove, it is convenient for construction workers to accurately install the cover plate and the floor decking plate to form a close-jointed joint where two adjacent floor decking plates are installed in a close fit, and since the cover plate is provided above the floor decking plate, the covering groove is opened at the bottom of the cover plate, and cooperates with the folded portion extending upward of the floor decking plate, when pouring concrete above the floor decking plate, the outer side of the cover plate, the folded portion and the covering groove can respectively form a barrier for blocking the flow of mortar to reduce the possibility of leakage, and fixing ribs are provided on the top of the cover plate, which can cooperate with the floor decking plate to clamp and limit the cover plate to prevent the cover plate from loosening or sliding, and at the same time, the fixing ribs are fixedly connected between adjacent steel trusses, so that an integral steel bar system is formed between each floor decking plate, thereby improving the structural reliability and stability of the overall floor decking plate.

[0007] In a preferred example, the present application may be further configured as follows: a structural adhesive layer is filled between the covering groove and the folded portion.

[0008] By adopting the above technical solution, the structural adhesive layer filled between the covering groove and the folded portion can further improve the sealing and stability of the node.

[0009] In a preferred example, the present application can be further configured as follows: the steel truss includes a connecting plate, the connecting plate is fixedly connected to the top of the floor decking plate, lower chord steel bars are laid on opposite sides of the top of the connecting plate, upper chord steel bars are arranged above the two lower chord steel bars, and web steel bars are fixedly connected between each of the lower chord steel bars and the upper chord steel bars, and the web steel bars are arranged obliquely.

[0010] By adopting the above technical solution and setting a connecting plate, support and installation positions can be provided for each steel bar, and a stable triangular structure can be formed between the lower chord steel bars, the web bars and the upper chord steel bars, so that the force can be well transmitted and dispersed in the structure, thereby increasing the overall stiffness and stability of the steel truss.

[0011] In a preferred example, the present application can be further configured as follows: the fixing bars are fixedly connected between the lower chord steel bars of two adjacent steel bar trusses.

[0012] By adopting the above technical solution, the fixed bars are installed on the lower chord steel bars between adjacent floor decking plates, so that the overall steel bar system of each floor decking plate can be constructed. At the same time, since the lower chord steel bars are located at the bottom of the steel bar system, it is beneficial for the fixed bars to limit the cover plate.

[0013] In a preferred example, the present application can be further configured as follows: a plurality of support members are provided between the bottoms of two adjacent floor decking plates, and the support members are vertically provided at the joints between the two adjacent floor decking plates.

[0014] By adopting the above technical solution, supporting members are arranged in the joints between adjacent floor decking plates, which can provide support for the bottom of the floor decking plates to enhance the bearing capacity at the edges of the floor decking plates, thereby reducing the possibility of collapse at the joints during construction pressure.

[0015] In a preferred example, the present application can be further configured as follows:

[0016] A plurality of floor decking plates, each of which is provided with a steel truss on the top, each of which is provided with folded portions extending upward on opposite sides of the floor decking plates, a cover plate is provided between each two adjacent floor decking plates, the cover plate is located above the floor decking plates and has two symmetrical covering grooves on the bottom, the covering grooves are matched with the folded portions, the area of ​​the cover plate between the two covering grooves is an open seam, a plurality of fixing ribs are laid at intervals on the top of the cover plate along its own length direction, and each of the fixing ribs is fixedly connected between two adjacent steel trusses.

[0017] By adopting the above technical solution, compared with the joint nodes of the steel truss floor decking plates which do not require dismantling of the bottom formwork and are adapted to two folded parts at the same time, this technical solution is suitable for the joint nodes which need to be set with layered and orderly exposed seams. The construction workers can adjust the distance between adjacent floor decking plates by controlling the size of the exposed seams.

[0018] In summary, the present application includes at least one of the following beneficial technical effects:

[0019] 1. By setting the cover plate, a connection platform can be provided between two adjacent floor decking plates to ensure a firm connection between the adjacent floor decking plates. By setting the folded portion and the covering groove, it is convenient for construction workers to accurately install the cover plate and the floor decking plate to form a close joint node where two adjacent floor decking plates are installed in a close fit. In addition, since the cover plate is set above the floor decking plate, the covering groove is opened at the bottom of the cover plate, and cooperates with the folded portion extending upward from the floor decking plate, when pouring concrete above the floor decking plate, the outer side of the cover plate, the folded portion and the covering groove can respectively form a barrier for blocking the flow of mortar to reduce the possibility of leakage. In addition, fixing ribs are set on the top of the cover plate to cooperate with the floor decking plate to clamp and limit the cover plate to prevent the cover plate from loosening or sliding. At the same time, the fixing ribs are fixedly connected between adjacent steel trusses to form an integral steel bar system between each floor decking plate, thereby improving the structural reliability and stability of the overall floor decking plate.

[0020] 2. The structural adhesive layer filled between the covering groove and the folded portion can further improve the sealing and stability of the node.

[0021] 3. Placing support members in the joints between adjacent floor decking plates can provide support to the bottom of the floor decking plates to enhance the bearing capacity at the edges of the floor decking plates, thereby reducing the possibility of collapse at the joints during construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a joint node of a steel truss floor decking plate without dismantling the bottom formwork in one embodiment of the present application;

[0023] Figure 2It is a structural schematic diagram of the joint node of the steel truss floor decking plate without removing the bottom formwork in another embodiment of the present application.

[0024] Figure numerals: 1. floor deck; 2. steel truss; 21. connecting plate; 22. lower chord steel bar; 23. upper chord steel bar; 24. web bar steel bar; 3. folded portion; 4. cover plate; 5. cover groove; 6. fixing rib; 7. structural adhesive layer; 8. support member; 9. exposed seam. DETAILED DESCRIPTION

[0025] The following is a description of exemplary embodiments of the present application in conjunction with the accompanying drawings, including various details of the embodiments of the present application to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0026] It should be noted that the terms "first", "second", etc. in the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present disclosure described here can be implemented in an order other than those illustrated or described here. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure.

[0027] In addition, the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article, unless otherwise specified, generally means that the associated objects before and after are in an "or" relationship.

[0028] The following describes a joint node of a steel truss floor deck that does not require removal of the bottom formwork of the present application with reference to the accompanying drawings.

[0029] like Figure 1As shown, the joint node of the steel bar truss floor decking slab without dismantling the bottom formwork includes a plurality of floor decking slabs 1, a steel bar truss 2 is arranged on the top of each floor decking slab 1, and folded portions 3 are extended upward on the opposite sides of each floor decking slab 1, and a cover plate 4 is arranged between each two adjacent floor decking slabs 1, the cover plate 4 is located above the floor decking slab 1 and a covering groove 5 is opened at the bottom, and the covering groove 5 is adapted to the two adjacent folded portions 3, and a plurality of fixing ribs 6 are laid at intervals along the length direction of the cover plate 4 on the top, and each fixing rib 6 is fixedly connected between two adjacent steel bar trusses 2. By arranging the cover plate 4, a connection platform can be provided between the two adjacent floor decking slabs 1 to ensure a firm connection between the adjacent floor decking slabs 1, and by arranging the folded portion 3 and the covering groove 5, it is convenient for construction personnel to accurately install the cover plate 4 and the floor decking slab 1. , so as to form a close-jointed node where two adjacent floor decking plates 1 are installed in a close-fitting manner. The finished product of the close-jointed node is flat, smooth and has high integrity. Since the cover plate 4 is arranged above the floor decking plate 1, the covering groove 5 is opened at the bottom of the cover plate 4, and cooperates with the folded portion 3 extending upward from the floor decking plate 1. When pouring concrete above the floor decking plate 1, the outer side of the cover plate 4, the folded portion 3 and the covering groove 5 can respectively form a barrier for blocking the flow of mortar to reduce the possibility of leakage. In addition, a fixing rib 6 is arranged on the top of the cover plate 4, which can cooperate with the floor decking plate 1 to clamp and limit the cover plate 4 to prevent the cover plate 4 from loosening or sliding. At the same time, the fixing rib 6 is fixedly connected between adjacent steel trusses 2, so that an integral steel bar system is formed between each floor decking plate 1, thereby improving the structural reliability and stability of the overall floor decking plate 1.

[0030] Specifically, the floor decking 1 can be made of structural plates such as cement fiber boards, high-performance concrete boards, artificial stone boards and steel plates that can carry out structural load-bearing, and the cover plate 4 is made of the same material as the floor decking 1 to ensure the consistency of the bearing capacity, stiffness and deformation characteristics at the joint nodes of adjacent floor decking slabs 1. Among them, the inside of the covering groove 5 of the cover plate 4 can also be provided with a flange corresponding to the shape of the folded portion 3 to better complete the fit. In this embodiment, the fixing ribs 6 are made of steel bars with a diameter of 10 mm and are evenly arranged at intervals of 1000 mm to ensure sufficient bearing capacity.

[0031] Furthermore, a structural adhesive layer 7 is filled between the covering groove 5 and the folding portion 3. The structural adhesive layer 7 filled between the covering groove 5 and the folding portion 3 can further improve the sealing and stability of the node. The structural adhesive layer 7 includes epoxy resin structural adhesive, polyurethane structural adhesive, anaerobic structural adhesive, hot melt pressure sensitive adhesive, acrylic structural adhesive, silicone structural adhesive, etc. Construction personnel can choose according to actual needs such as strength requirements and construction performance.

[0032] Furthermore, the steel truss 2 includes a connecting plate 21, which is fixedly connected to the top of the floor decking slab 1. Lower chord steel bars 22 are laid on opposite sides of the top of the connecting plate 21. Upper chord steel bars 23 are arranged above the two lower chord steel bars 22. Web steel bars 24 are fixedly connected between each lower chord steel bar 22 and the upper chord steel bar 23. The web steel bars 24 are inclined. By setting the connecting plate 21, support and installation positions can be provided for each steel bar. A stable triangular structure can be formed between the lower chord steel bars 22, the web steel bars 24 and the upper chord steel bars 23, so that the force can be well transmitted and dispersed in the structure, thereby increasing the overall stiffness and stability of the steel truss 2.

[0033] Among them, the fixing ribs 6 are fixedly connected between the lower chord steel bars 22 of two adjacent steel trusses 2. By installing the fixing ribs 6 on the lower chord steel bars 22 between adjacent floor decking plates 1, the construction of the overall steel bar system of each floor decking plate 1 can be realized. At the same time, since the lower chord steel bars 22 are located at the bottom of the steel bar system, it is beneficial for the fixing ribs 6 to limit the cover plate 4. Specifically, the fixing ribs 6 can be fixedly connected to the lower chord steel bars 22 by binding or welding according to the actual construction situation. The binding method is more flexible and cost-effective, and has good visibility and maintainability. The welding method can provide a long-lasting and stable connection, and has good durability and corrosion resistance, and can withstand the load of the structure and the influence of the external environment for a long time.

[0034] In addition, a number of support members 8 are arranged between the bottoms of two adjacent floor decking plates 1. The support members 8 are arranged vertically at the joints between the two adjacent floor decking plates 1. By arranging the support members 8 at the joints between the adjacent floor decking plates 1, support can be provided to the bottoms of the floor decking plates 1 to enhance the bearing capacity at the edges of the floor decking plates 1, thereby reducing the possibility of collapse at the joints when pressure is applied during construction. Specifically, the support members 8 can be selected as structural members such as wooden planks and steel pipes that can provide additional support and stability to ensure that the joint nodes of the floor decking plates 1 can withstand the weight and pressure during concrete pouring.

[0035] In one embodiment, if Figure 2As shown, the joint node of the steel bar truss floor decking slab without dismantling bottom formwork includes several floor decking slabs 1, each of which is provided with a steel bar truss 2 on the top, and each of which is provided with a folding portion 3 extending upward on the opposite sides of the floor decking slab 1, and a cover plate 4 is provided between each two adjacent floor decking slabs 1, the cover plate 4 is located above the floor decking slab 1 and has two symmetrical covering grooves 5 on the bottom, which are matched with the folding portion 3, and the area where the cover plate 4 is located between the two covering grooves 5 is an open seam portion 9, and several fixing ribs 6 are laid at intervals on the top of the cover plate 4 along its own length direction, and each fixing rib 6 is fixedly connected between two adjacent steel bar trusses 2. Compared with the scheme of the joint node of the steel bar truss floor decking slab without dismantling bottom formwork in the above-mentioned embodiment, which is provided with a single covering groove 5 and is matched with two folding portions 3 at the same time, the scheme of this embodiment is suitable for the joint node of the open seam with a sense of hierarchy and regularity, and the construction personnel can adjust the distance between adjacent floor decking slabs 1 by controlling the design size of the open seam portion 9, and can select the joint form according to actual construction needs.

[0036] In summary, the advantages of this application scheme are as follows:

[0037] The non-removal bottom formwork system is conducive to meeting the requirements of civilized construction on site, and can significantly shorten the construction period and improve construction efficiency;

[0038] The outer side of the cover plate 4, the folded portion 3 and the cover groove 5 can respectively form a barrier for blocking the flow of mortar, so as to reduce the possibility of mortar leakage and ensure the quality and appearance of the finished product;

[0039] A fixing rib 6 is arranged on the top of the cover plate 4, which can cooperate with the floor deck 1 to clamp and limit the cover plate 4, preventing the cover plate 4 from loosening or sliding off. At the same time, the fixing rib 6 is fixedly connected between adjacent steel bar trusses 2, so that an integral steel bar system is formed between each floor deck 1, thereby improving the structural reliability and stability of the overall floor deck 1;

[0040] Different cover plates 4 can be replaced according to needs to set different joint forms. The finished product of the dense joint is flat and smooth with high integrity, and the exposed seams have a sense of hierarchy and are neat and orderly.

[0041] The above specific implementations do not constitute a limitation on the protection scope of this application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included in the protection scope of this application.

Claims

1. A joint node of a steel bar truss floor deck without dismantling the bottom formwork, characterized in that: include: A plurality of floor decking plates (1), each of which is provided with a steel truss (2) on the top, each of which is provided with folded portions (3) extending upward on opposite sides of each of which, a cover plate (4) is provided between each two adjacent floor decking plates (1), the cover plate (4) is located above the floor decking plates (1) and has a covering groove (5) at the bottom, the covering groove (5) being adapted to the two adjacent folded portions (3), a plurality of fixing ribs (6) being laid at intervals on the top of the cover plate (4) along its length direction, each of which is fixedly connected between two adjacent steel trusses (2).

2. A joint node of a steel bar truss floor deck without dismantling the bottom formwork as claimed in claim 1, characterized in that: A structural adhesive layer (7) is filled between the covering groove (5) and the folded portion (3).

3. The joint node of the steel bar truss floor deck without dismantling the bottom formwork as claimed in claim 1 is characterized in that: The steel bar truss (2) comprises a connection plate (21), wherein the connection plate (21) is fixedly connected to the top of the floor decking plate (1), lower chord steel bars (22) are laid on opposite sides of the top of the connection plate (21), upper chord steel bars (23) are arranged above the two lower chord steel bars (22), and a web steel bar (24) is fixedly connected between each lower chord steel bar (22) and the upper chord steel bar (23), and the web steel bar (24) is arranged obliquely.

4. A joint node of a steel bar truss floor deck without dismantling bottom formwork as claimed in claim 3, characterized in that: The fixing bars (6) are fixedly connected between the lower chord steel bars (22) of two adjacent steel bar trusses (2).

5. The joint node of the steel bar truss floor deck without dismantling the bottom formwork as claimed in claim 1 is characterized in that: A plurality of support members (8) are arranged between the bottoms of two adjacent floor decking plates (1), and the support members (8) are arranged vertically at the joint between the two adjacent floor decking plates (1).

6. A joint node of a steel bar truss floor deck without dismantling the bottom formwork, characterized in that: include: A plurality of floor decking plates (1), each of which is provided with a steel bar truss (2) on the top, each of which is provided with a folded portion (3) extending upward on opposite sides of each of which, a cover plate (4) is provided between each two adjacent floor decking plates (1), the cover plate (4) is located above the floor decking plates (1) and has two symmetrically arranged cover grooves (5) on the bottom, the cover grooves (5) being matched with the folded portion (3), the area of ​​the cover plate (4) between the two cover grooves (5) being an exposed seam (9), the top of the cover plate (4) being provided with a plurality of fixed ribs (6) at intervals along its length direction, each of which is fixedly connected between two adjacent steel bar trusses (2).

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