A detachable bottom die steel bar truss plate end connecting joint structure

Abstract

The embodiment of the application provides a detachable bottom mold steel bar truss plate end connecting joint structure, which comprises a steel beam, a steel bar truss erected on the steel beam, a truss bottom mold detachably connected to the lower side of the steel bar truss, and one side edge of the truss bottom mold facing the steel beam; a connecting piece having a first section and a second section, the first section being connected to the top surface of the steel beam, and the second section extending downward from the side edge of the steel beam; and a square sealing strip, the second section being connected to the side wall of the square sealing strip, and the top surface of the square sealing strip abutting against the bottom surface of the truss bottom mold. In the technical scheme of the application, the connecting piece is arranged on the edge of the steel beam, and then the square sealing strip is connected to the connecting piece through fasteners, so that the square sealing strip can be correspondingly arranged at the gap between the steel beam and the edge of the truss bottom mold, thereby sealing the gap and effectively avoiding the problem of concrete leakage during concrete pouring. After the concrete solidifies, the square sealing strip is convenient to remove, thereby effectively reducing the construction difficulty.

Description

Technical Field

[0001] This application relates to the field of steel structure truss plate technology, and in particular to an end connection node structure for a detachable bottom formwork steel truss plate. Background Technology

[0002] With the development of construction technology, prefabricated construction has gradually become the main construction method. In the construction of floor slabs in concrete structures, prefabricated steel truss slabs are used instead of wooden bottom formwork. The concrete formwork can be quickly made by erecting the steel truss slabs on the building structure, and then concrete can be poured on the steel truss slabs to complete the floor slab construction.

[0003] Steel truss slabs typically consist of a metal bottom formwork and steel trusses. When pouring the floor slab, concrete is poured directly onto the metal bottom formwork, which buries the steel trusses. Once the concrete has dried, the metal bottom formwork can be removed, thus completing the floor slab construction.

[0004] However, when such steel truss panels are erected on steel beams, their edges cannot be tightly connected to the beams, often leaving large gaps. After concrete is poured onto the truss panels, it easily leaks through these gaps. Existing technical solutions mainly include two methods: First, welding edge sealing strips to the edges of the steel truss panels and then tightly connecting the strips to the steel beams. Second, flattening the edges of the metal bottom formwork and then directly placing it on the steel beams. Both methods suffer from difficulties in removing the metal bottom formwork by cutting it from above, leading to high construction difficulty and low efficiency, thus impacting construction progress. Utility Model Content

[0005] In view of the above problems, this application is made to provide a removable bottom formwork steel truss plate end connection node structure to solve or at least partially solve the above problems.

[0006] In one embodiment of this application, a detachable bottom formwork steel truss plate end connection node structure is provided, comprising:

[0007] steel beams;

[0008] A steel truss is erected on the steel beam.

[0009] The bottom formwork of the truss is detachably connected to the lower side of the steel truss, with one side of the bottom formwork facing the steel beam;

[0010] The connector has a first section and a second section that are bent and connected together. The first section is intermittently spot-welded to the top surface of the steel beam, and the second section extends downward from the side edge of the steel beam.

[0011] A square sealing strip, the second section of which is connected to the side wall of the square sealing strip, and the top surface of the square sealing strip abuts against the bottom surface of the truss bottom formwork.

[0012] Optionally, the steel beam is an I-beam or an H-beam, and the steel beam has an upper flange plate;

[0013] Multiple steel trusses are erected on the steel beam. One end of the first steel truss is located on the left side of the upper flange plate, and one end of the second steel truss is located on the right side of the upper flange plate.

[0014] The first steel truss and the second steel truss are spaced apart.

[0015] Optionally, the connector is an L-shaped connector plate, with the first section of the connector connected to the top surface of the upper flange plate, and the second section of the connector extending from the side edge of the upper flange plate downwards.

[0016] Optionally, the width of the second segment is less than or equal to the width of the first segment;

[0017] The width of the second segment is equal to or greater than the thickness of the upper flange.

[0018] Optionally, the square sealing strip has perpendicular sidewalls and a top wall;

[0019] The second section of the connector is connected to the side wall by fasteners, and the top wall abuts against the bottom surface of the truss bottom formwork.

[0020] Optionally, the square sealing strip is made of one of the following materials: wood, plastic, rubber, or metal square tube.

[0021] Optionally, a sealing element is provided on the top wall of the square sealing strip, and the sealing element abuts against the bottom surface of the truss bottom formwork.

[0022] Optionally, the width of the first segment is M, and the value of M ranges from 30mm to 60mm;

[0023] The width of the second segment is N, and the value of N ranges from 30mm to 60mm.

[0024] Optionally, the side wall height and top wall width of the square sealing strip are greater than or equal to 30 mm;

[0025] The fastener is one of the following: nail, steel staple, or self-tapping screw.

[0026] Optionally, the fastener connects the second segment of the connector to the square sealing strip at a position corresponding to the centerline of the sidewall of the square sealing strip or slightly above the centerline.

[0027] In the technical solution provided in this application embodiment, by setting connectors at the edge of the steel beam and then connecting the square sealing strip to the connectors with fasteners, the square sealing strip can be correspondingly set at the gap between the steel beam and the edge of the truss bottom formwork, thereby sealing the gap and effectively avoiding the problem of grout leakage during concrete pouring. After the concrete solidifies, the square sealing strip is easy to remove, effectively reducing the difficulty of construction. Since the square sealing strip is not welded to the truss bottom formwork, the truss bottom formwork can also be easily and completely removed after the square sealing strip is removed, avoiding workers having to cut from above, which is convenient, time-saving, and labor-saving. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This application provides a front view of an end connection node structure for a detachable bottom formwork steel truss plate, as shown in the embodiment of the present application.

[0030] Figure 2 A left view of an end connection node structure of a detachable bottom formwork steel truss plate provided in an embodiment of this application;

[0031] Figure 3 An exploded view of an end connection node structure of a removable bottom formwork steel truss plate provided in an embodiment of this application;

[0032] Figure 4 A front view of another detachable bottom formwork steel truss plate end connection node structure provided in an embodiment of this application;

[0033] Figure 5 A left view of another detachable bottom formwork steel truss plate end connection node structure provided in an embodiment of this application;

[0034] Figure 6 An exploded view of another detachable bottom formwork steel truss plate end connection node structure provided in an embodiment of this application.

[0035] Explanation of the attached drawing numbers:

[0036] Steel beam 1, upper flange plate 11;

[0037] 2. Steel truss; 3. Truss bottom formwork; 4. Connecting components; 41. First section; 42. Second section; 5. Square sealing strip; 6. Fasteners. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain error range. Furthermore, in the embodiments of this application, "multiple" refers to two or more. Without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0039] Figure 1 This application provides a front view of an end connection node structure for a detachable bottom formwork steel truss plate, as shown in the embodiment of the present application. Figure 2 The left view shows a detachable bottom formwork steel truss plate end connection node structure provided in an embodiment of this application.

[0040] See Figures 1 to 6 In one embodiment of this application, a detachable bottom formwork steel truss plate end connection node structure is provided. The detachable bottom formwork steel truss plate end connection node structure includes: steel beam 1, steel truss 2, truss bottom formwork 3, connector 4, and square sealing strip 5.

[0041] Steel beam 1 is the building's crossbeam. Before pouring concrete, steel beam 1 can be used to support the bottom formwork of the steel truss slab. After pouring concrete, steel beam 1 can be used to support the floor slab. The steel truss slab includes steel truss 2 and truss bottom formwork 3. After pouring concrete, the truss bottom formwork 3 can be removed, and the steel truss 2 can be embedded in the concrete.

[0042] The steel truss 2 is erected on the steel beam 1. The bottom formwork 3 of the truss is detachably connected to the lower side of the steel truss 2, with one side of the bottom formwork 3 facing the steel beam 1. The bottom formwork 3 can be used to support the poured concrete. Once the concrete has dried, the bottom formwork 3 can be removed.

[0043] The connector 4 has a first section 41 and a second section 42 that are bent and connected. The first section 41 is connected to the top surface of the steel beam 1, and the second section 42 extends downward from the side edge of the steel beam 1. A square sealing strip 5 is attached to the side wall of the square sealing strip 5, and the top surface of the square sealing strip 5 abuts against the bottom surface of the truss bottom formwork 3.

[0044] Since the truss bottom formwork 3 is located on the bottom surface of the floor slab, a gap will be formed between the edge of the truss bottom formwork 3 and the steel beam 1 when the bottom formwork of the steel truss slab is constructed. If the truss bottom formwork 3 is erected on the steel beam 1, although the formation of the gap can be avoided, after the concrete is poured, the edge of the truss bottom formwork 3 will be embedded between the concrete and the steel beam 1, making the removal of the truss bottom formwork 3 very difficult.

[0045] In addition, in the existing technical solutions, edge sealing strips can be welded to the edge of the truss bottom formwork 3 and then overlapped on the steel beam 1 to avoid the formation of gaps. However, when dismantling the truss bottom formwork 3, it is still necessary to cut the connection between the edge sealing strip and the truss bottom formwork 3. Construction workers need to work on their backs, which is difficult and inefficient.

[0046] In the technical solution provided in this application, by setting a connector 4 at the edge of the steel beam 1, and then connecting the square sealing strip 5 to the connector 4 with fasteners 6, the square sealing strip 5 can be correspondingly set at the gap between the steel beam 1 and the edge of the truss bottom formwork 3, thereby sealing the gap and effectively avoiding the problem of grout leakage during concrete pouring. After the concrete has solidified, the square sealing strip 5 is easy to remove, effectively reducing the difficulty of construction. Since the square sealing strip 5 is not welded to the truss bottom formwork 3, the truss bottom formwork 3 can also be easily and completely removed after the square sealing strip 5 is removed, and the truss bottom formwork 3 can be reused.

[0047] Furthermore, the fabrication of this connector 4 is relatively simple; it can be made by bending the scrap material generated during the fabrication of the truss bottom mold 3. Typically, the metal sheet used to fabricate the truss bottom mold 3 is a 0.5mm thick galvanized sheet, which is then bent to create the connector 4.

[0048] join Figures 1 to 4 In one embodiment provided in this application, the steel beam 1 is an I-beam or an H-beam, and the steel beam 1 has an upper flange plate 11, a lower flange plate, and a web plate. Taking the steel beam 1 as a transverse H-beam as an example, the steel truss 2 is mounted on the upper side of the upper flange plate 11, the edge of the truss bottom formwork 3 is approximately flush with the edge of the upper flange plate 11, and a gap is formed between the edge of the truss bottom formwork 3 and the edge of the upper flange plate 11.

[0049] In order to improve the support efficiency of the steel beam 1, multiple steel trusses 2 are erected on the steel beam 1. One end of the first steel truss 2 is located on the left side of the upper flange plate 11, and one end of the second steel truss 2 is located on the right side of the upper flange plate 11. The first steel truss 2 and the second steel truss 2 are arranged at intervals.

[0050] Furthermore, the connector 4 is an L-shaped connecting plate. The first section 41 of the connector 4 is intermittently spot-welded to the top surface of the upper flange plate 11, and the second section 42 of the connector 4 extends from the side edge of the upper flange plate 11 to the lower part of the upper flange plate 11. The first section 41 can be connected to the upper flange plate 11 by intermittent spot welding. Since the square sealing strip 5 is mainly suspended and connected to one side of the upper flange plate 11 by the connector 4, welding can improve the connection stability of the square sealing strip 5 and improve the sealing effect of the square sealing strip 5.

[0051] For the configuration of connector 4, this application provides various structural forms. For example, participating Figures 1 to 3 In one specific implementation, the width of the second segment 42 is smaller than the width of the first segment 41, and the width of the second segment 42 is approximately equal to the thickness of the upper flange plate 11. Thus, after the square sealing strip 5 is removed, the second segment 42 of the connector 4 directly adheres to the edge of the upper flange plate 11.

[0052] join Figures 4 to 6 In another specific embodiment, the width of the second segment 42 is equal to the width of the first segment 41, and the width of the second segment 42 is greater than the thickness of the upper flange plate 11. By lengthening the width of the second segment 42, the second segment 42 can be better connected to the square sealing strip 5, and a wider square sealing strip 5 can also be used, thereby covering larger gaps.

[0053] When the width of the second segment 42 is too long, although the second segment 42 will protrude outside the upper flange plate 11, during the decoration stage, the construction method is relatively simple: bend the second segment 42 to wrap around the edge of the upper flange plate 11.

[0054] If special working conditions are encountered, the steel beam 1 will not be decorated externally, and the upper flange plate 11 of the steel beam 1 will be exposed. Only the second section 42 of the connector 4 needs to be cut, that is, the exposed part extending out of the flange is removed. Compared with cutting the bottom formwork 3 of the truss, this method is relatively simple and convenient to construct.

[0055] See Figures 1 to 6 In one embodiment provided in this application, the square sealing strip 5 has perpendicular side walls and a top wall, the second section 42 of the connector 4 is connected to the side wall by fasteners 6, and the top wall abuts against the bottom surface of the truss bottom mold 3.

[0056] When sealing gaps, the square sealing strip 5 must use one side to abut against the side of the upper flange plate 11 and another side to abut against the bottom surface of the truss bottom formwork 3. Therefore, the square sealing strip 5 has perpendicular side walls and top walls to effectively seal gaps.

[0057] In one specific embodiment, the square sealing strip 5 is made of one of the following materials: wood, plastic, rubber, or metal square tubing. For example, taking a wooden square sealing strip 5 as an example, this type of square sealing strip 5 is not only easy to process and manufacture, but can also be reused multiple times. When encountering a long gap that needs to be sealed, multiple wooden square sealing strips 5 can be spliced ​​together.

[0058] Because freshly poured concrete has a certain degree of fluidity and a high water content, simply abutting the square sealing strip 5 against the bottom surface of the truss bottom formwork 3 may not provide a complete seal, potentially leading to cement slurry leakage.

[0059] To improve the sealing effect of the square sealing strip 5, in one embodiment provided in this application, a sealing element is provided on the top wall of the square sealing strip 5, and the sealing element abuts against the bottom surface of the truss bottom mold 3. The sealing element can be made of materials such as rubber or silicone. Compared with the wooden square sealing strip 5, the sealing element can be connected more tightly to the bottom of the truss bottom mold 3, resulting in a better sealing effect and effectively preventing grout leakage.

[0060] Furthermore, participate Figure 6 In one embodiment provided in this application, the width of the first segment 41 is M, and the value of M ranges from 30mm to 60mm; the width of the second segment 42 is N, and the value of N ranges from 30mm to 60mm. The side wall height and top wall width of the square sealing strip 5 are greater than 30mm.

[0061] As mentioned above, to facilitate the installation and removal of the square sealing strip 5, the square sealing strip 5 is connected to the second section 42 of the connector 4 by fastener 6. The fastener 6 is one of the following: nail, steel stud, or self-tapping screw.

[0062] Furthermore, fastener 6 connects the second section 42 of connector 4 to square sealing strip 5 at the centerline position or slightly above the centerline of the side wall of square sealing strip 5. This connection method ensures that square sealing strip 5 can tightly abut against the edge of upper flange plate 11 of steel beam 1, effectively preventing grout leakage.

[0063] In summary, in the technical solution provided in this application embodiment, by setting connectors at the edge of the steel beam and then connecting the square sealing strip to the connectors with fasteners, the square sealing strip can be correspondingly set at the gap between the steel beam and the edge of the truss bottom formwork, thereby sealing the gap and effectively avoiding the problem of grout leakage during concrete pouring. After the concrete solidifies, the square sealing strip is easy to remove, effectively reducing the difficulty of construction. Since the square sealing strip is not welded to the truss bottom formwork, the truss bottom formwork can also be easily and completely removed after the square sealing strip is removed.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A detachable bottom formwork steel truss plate end connection node structure, characterized in that, include: steel beams; A steel truss is erected on the steel beam. The bottom formwork of the truss is detachably connected to the lower side of the steel truss, with one side of the bottom formwork facing the steel beam; The connector has a first section and a second section that are bent and connected together. The first section is intermittently spot-welded to the top surface of the steel beam, and the second section extends downward from the side edge of the steel beam. A square sealing strip, the second section of which is connected to the side wall of the square sealing strip, and the top surface of the square sealing strip abuts against the bottom surface of the truss bottom formwork.

2. The end connection node structure of the detachable bottom formwork steel truss plate according to claim 1, characterized in that, The steel beam is an I-beam or an H-beam, and the steel beam has an upper flange plate; Multiple steel trusses are erected on the steel beam. One end of the first steel truss is located on the left side of the upper flange plate, and one end of the second steel truss is located on the right side of the upper flange plate. The first steel truss and the second steel truss are spaced apart.

3. The end connection node structure of the detachable bottom formwork steel truss plate according to claim 2, characterized in that, The connector is an L-shaped connecting plate. The first section of the connector is connected to the top surface of the upper flange plate, and the second section of the connector extends from the side edge of the upper flange plate downwards.

4. The end connection node structure of the detachable bottom formwork steel truss plate according to claim 3, characterized in that, The width of the second segment is less than or equal to the width of the first segment; The width of the second segment is equal to or greater than the thickness of the upper flange.

5. The end connection node structure of the detachable bottom formwork steel truss plate according to claim 1, characterized in that, The square sealing strip has perpendicular side walls and a top wall; The second section of the connector is connected to the side wall by fasteners, and the top wall abuts against the bottom surface of the truss bottom formwork.

6. The end connection node structure of the detachable bottom formwork steel truss plate according to claim 5, characterized in that, The square sealing strip is made of one of the following materials: wood, plastic, rubber, or metal square tube.

7. The end connection node structure of the detachable bottom formwork steel truss plate according to claim 6, characterized in that, A sealing element is provided on the top wall of the square sealing strip, and the sealing element abuts against the bottom surface of the truss bottom formwork.

8. The end connection node structure of the detachable bottom formwork steel truss plate according to claim 4, characterized in that, The width of the first segment is M, and the value of M ranges from 30mm to 60mm; The width of the second segment is N, and the value of N ranges from 30mm to 60mm.

9. The end connection node structure of the detachable bottom formwork steel truss plate according to claim 5, characterized in that, The side wall height and top wall width of the square sealing strip are greater than or equal to 30mm; The fastener is one of the following: nail, steel staple, or self-tapping screw.

10. The end connection node structure of the detachable bottom formwork steel truss plate according to claim 5, characterized in that, The fastener is positioned at the center line of the side wall of the square sealing strip or slightly above the center line, connecting the second section of the connector to the square sealing strip.

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