Steel bar truss floor support plate connecting structure

Abstract

The utility model provides a steel bar truss floor support plate connecting structure which comprises a load-bearing brick wall structure, a connecting structure and a steel bar truss floor support plate, the load-bearing brick wall structure comprises two end load-bearing brick walls, L-shaped openings are reserved in the end load-bearing brick walls, and the connecting structure comprises concrete piers and embedded connecting pieces. And the end part of the steel bar truss floor support plate and the vertical section of the L-shaped opening of the end part bearing brick wall are arranged at an interval. In this way, the process that angle steel is welded after a steel plate is embedded in the side face of a traditional node wall, and steel bar truss floor support plate support steel bars are welded to the angle steel is omitted, the L-shaped opening is reserved in the bearing brick wall structure, the connecting structure is embedded for connecting the ends of the steel bar truss floor support plates, connection is more reliable, the anti-seismic performance is good, the wall is not damaged when stressed, and the structure is simple and convenient. The construction is convenient; and meanwhile, the vertical section wall body at the L-shaped opening is arranged at intervals, so that the effect of edge sealing formworks can be achieved, edge-covered galvanized steel sheets do not need to be welded any more, and support of side formworks is saved when concrete is poured.

Description

Technical Field

[0001] This utility model relates to the field of steel truss floor decking technology, and in particular to a connection structure for steel truss floor decking. Background Technology

[0002] With the further development of my country's industrialization, the construction technology of steel truss floor decking has been widely used in building engineering. Steel truss floor decking can completely replace the function of formwork, but reduces the formwork erection and dismantling work, greatly improves the efficiency of floor decking construction, and effectively solves many problems encountered in traditional construction processes.

[0003] Currently, reinforced truss floor decking is widely used in steel structure systems, and the technology is relatively mature. However, it is less commonly used in brick-concrete structures because there are many problems in connecting reinforced truss floor decking to brick-concrete structures. Connecting reinforced truss floor decking to brick walls and sharing loads is a major challenge. The conventional approach for connecting brick walls to reinforced truss floor decking is to use pre-embedded steel plates on the side of the wall. The end support reinforcement of the reinforced truss floor decking is welded to angle steel welded to the pre-embedded steel plates, and the ends of the reinforced truss floor decking are welded with edge-sealing steel plates. This structure easily causes cracks at the junction of the brick wall and the floor slab when the concrete is poured, and the need to weld edge-sealing steel plates at the ends of the reinforced truss floor decking before pouring concrete results in a large workload and a long construction period.

[0004] Therefore, it is necessary to propose a steel truss floor deck connection structure to solve or at least alleviate the above-mentioned defects. Utility Model Content

[0005] The main objective of this invention is to provide a connection structure for steel truss floor decking, in order to solve the problem that the connection between steel truss floor decking and brick-concrete structure is prone to cracking and requires welding of edge sealing steel plates before concrete can be poured.

[0006] To achieve the above objectives, this utility model provides a steel truss floor deck connection structure, including a load-bearing brick wall structure, a connection structure, and a steel truss floor deck; wherein,

[0007] The load-bearing brick wall structure includes two longitudinally opposed end load-bearing brick walls. Each end load-bearing brick wall has an L-shaped opening on its adjacent side for placing the end of a steel truss floor slab. Furthermore, the horizontal section of each end load-bearing brick wall at the L-shaped opening is recessed downwards to form a connection space for the pre-installation of the connection structure.

[0008] The connection structure includes a concrete pier and a pre-embedded connector. The concrete pier is pre-placed in the connection space, and the pre-embedded connector is connected to the top of the concrete pier. The end of the steel truss floor slab is connected to the pre-embedded connector, and the end of the steel truss floor slab is spaced apart from the vertical section of the L-shaped opening of the end load-bearing brick wall.

[0009] Preferably, the embedded connector includes an embedded steel plate and an anchoring steel bar, the top end of the anchoring steel bar is connected to the bottom of the embedded steel plate, and the bottom end of the anchoring steel bar extends downward into the interior of the concrete pier so that the embedded steel plate is connected to the concrete pier, and the end of the steel truss floor deck is connected to the embedded steel plate.

[0010] Preferably, the ends of the steel truss floor deck have support vertical bars, which are welded to the embedded steel plate.

[0011] Preferably, there are multiple connection spaces, which are arranged at horizontal intervals, and each connection space contains a pre-installed connection structure.

[0012] Preferably, the length of the anchoring steel bar is 200mm to 300mm.

[0013] Preferably, the load-bearing brick wall structure further includes an intermediate load-bearing brick wall, which is disposed between the two end load-bearing brick walls, and the intermediate load-bearing brick wall has L-shaped openings reserved on both sides.

[0014] Preferably, the concrete pier is rectangular and has dimensions of 60mm × 100mm × 100mm.

[0015] Preferably, the concrete pier is made of C20 concrete.

[0016] Preferably, the number of anchoring steel bars is four, and the four anchoring steel bars are distributed in a square shape.

[0017] Preferably, the length of the section of the steel truss floor slab located on the end load-bearing brick wall is greater than half the thickness of the end load-bearing brick wall.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention provides a steel truss floor deck connection structure, including a load-bearing brick wall structure, a connection structure, and a steel truss floor deck. The load-bearing brick wall structure includes two longitudinally opposite end load-bearing brick walls. Each end load-bearing brick wall has an L-shaped opening reserved on its adjacent side for placing the end of the steel truss floor deck. The end load-bearing brick wall is recessed downward at the horizontal section of the L-shaped opening to form a connection space for the connection structure. The connection structure includes a concrete pier and an embedded connector. The concrete pier is placed in the connection space, and the embedded connector is connected to the top of the concrete pier. The end of the steel truss floor deck is connected to the embedded connector, and the end of the steel truss floor deck is spaced apart from the vertical section of the L-shaped opening of the end load-bearing brick wall. This eliminates the traditional process of pre-embedding steel plates on the side of the wall and then welding angle steel, and then welding the reinforcing bars of the steel truss floor deck support to the angle steel. By reserving an L-shaped opening in the load-bearing brick wall structure and pre-embedding the connecting structure for the end connection of the steel truss floor deck, the connection is more reliable, the seismic performance is better, and there is no damage to the stress on the wall, making construction convenient. At the same time, the vertical wall sections at the L-shaped opening can also serve as edge sealing formwork, eliminating the need for welding galvanized steel plates for edge sealing, and saving on the support of side formwork when pouring concrete. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram illustrating the application scenario of the overall structure of this utility model in an end-bearing brick wall according to one embodiment;

[0022] Figure 2 This is a schematic diagram showing the arrangement of the connecting mechanism in one embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram illustrating the application scenario of the overall structure of this utility model in a central load-bearing brick wall according to one embodiment;

[0024] Figure 4 This is a schematic diagram of the longitudinal reinforcing bars inside a steel truss floor slab in one embodiment of the present invention.

[0025] Figure 5 This is a plan view of the connection structure in one embodiment of the present invention.

[0026] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0027] Explanation of icon numbers:

[0028] 10. Load-bearing brick wall structure; 110. End load-bearing brick wall; 120. L-shaped opening; 130. Middle load-bearing brick wall; 20. Connecting structure; 210. Concrete pier; 220. Embedded connector; 221. Embedded steel plate; 222. Anchoring reinforcement; 30. Steel truss floor deck; 310. Support vertical reinforcement; 320. Longitudinal reinforcement. Detailed Implementation

[0029] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0032] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0033] Please see the appendix Figure 1-5 This utility model provides an embodiment of a steel truss floor deck 30 connection structure, including a load-bearing brick wall structure 10, a connection structure 20, and a steel truss floor deck 30. First, it should be noted that in this application, "longitudinal" refers to the direction along the length of the steel truss floor deck 30, and "width" refers to the direction along the width of the steel truss floor deck 30. Specifically, as follows:

[0034] The load-bearing brick wall structure 10 includes two longitudinally opposite end load-bearing brick walls 110. Each of the two end load-bearing brick walls 110 has an L-shaped opening 120 reserved on its adjacent side for placing the end of the steel truss floor slab 30. The end load-bearing brick wall 110 is recessed downwards at the horizontal section of the L-shaped opening 120 to form a connection space for the pre-installed connection structure 20. The connection structure 20 includes a concrete pier 210 and an embedded connector 220. The concrete pier 210 is pre-installed in the connection space, and the embedded connector 220 is connected to the top of the concrete pier 210. The end of the steel truss floor slab 30 is connected to the embedded connector 220, and the end of the steel truss floor slab 30 is spaced apart from the vertical section of the L-shaped opening 120 of the end load-bearing brick wall 110.

[0035] Specifically, the connection structure of the steel truss floor deck 30 in this application includes a load-bearing brick wall structure 10, a connection structure 20, and a steel truss floor deck 30. The load-bearing brick wall structure 10 is used for the end connection and placement of the steel truss floor deck 30, and includes two longitudinally opposite end load-bearing brick walls 110, so that the two ends of the steel truss floor deck 30 are respectively supported in the two end load-bearing brick walls 110. Typically, in the prior art, steel plates 221 are pre-embedded in the end load-bearing brick walls 110, angle steel is welded on, and then the steel truss floor deck is welded on. Plate 30 is welded to angle steel, and then edge-sealing steel plate is welded on. However, this method can easily cause the wall to crack. Therefore, in this application, the end load-bearing brick wall 110 has an L-shaped opening 120 reserved in advance during construction for the end of the steel truss floor slab 30 to be placed. At the same time, a connection space is reserved by recessing downward at the horizontal section of the L-shaped opening 120 for the installation of the connection structure 20. This connects the end of the steel truss floor slab 30 to the connection structure 20. In this way, the connection structure 20, as the main load-bearing structure, will not cause the wall to crack.

[0036] The connecting structure 20 includes a concrete pier 210 and a pre-embedded connector 220. The concrete pier 210 is prepared by on-site mixing and serves as a support and load-bearing body, thus eliminating the need for anchoring steel plates within the wall. The concrete pier 210 can only be constructed after the masonry and plastering have reached sufficient strength. C20 concrete can be used, which is sufficient to support the steel truss floor slab 30, has a low cost, and ensures durability. Preferably, the concrete pier 210 can be rectangular for ease of construction, with dimensions of 60mm × 100mm × 100mm, determined by considering load-bearing strength, load-bearing brick wall height, and construction cost. Those skilled in the art can adjust the dimensions according to actual conditions. The pre-embedded connector 220... The connector 220 is connected to the top of the concrete pier 210, thus forming a unified force-bearing structure and preventing the concrete pier 210 from cracking. The top also facilitates the connection of the ends of the steel truss floor deck 30. In this way, the pressure at the ends of the steel truss floor deck 30 is borne by the pre-embedded connector 220 and the concrete pier 210, and will not be directly applied to the load-bearing brick wall structure 10, thus not damaging the wall's load-bearing capacity. It is worth mentioning that when the steel truss floor deck 30 is erected and connected, its ends need to be spaced apart from the vertical section of the L-shaped opening 120 of the end load-bearing brick wall 110. This gap allows the vertical section of the L-shaped opening 120 to be used as a template when pouring the steel truss floor deck 30, thus serving as an edge sealing template and saving the need for side template support when pouring concrete.

[0037] In a preferred embodiment of this utility model, the pre-embedded connector 220 includes a pre-embedded steel plate 221 and an anchoring steel bar 222. The top end of the anchoring steel bar 222 is connected to the bottom of the pre-embedded steel plate 221, and the bottom end of the anchoring steel bar 222 extends downward into the interior of the concrete pier 210 so that the pre-embedded steel plate 221 is connected to the concrete pier 210. The end of the steel truss floor deck 30 is connected to the pre-embedded steel plate 221.

[0038] It should be noted that using a combination of embedded steel plate 221 and anchor steel bar 222 to connect the concrete pier 210 can significantly improve the connection strength and stability of the concrete pier 210. The anchor steel bar 222 can effectively transmit tensile and shear forces, while the embedded steel plate 221 provides a larger contact area, enhancing the overall integrity of the connection. This facilitates connection with the end of the steel truss floor slab 30, simplifying construction. Preferably, there are four anchor steel bars 222 arranged in a square shape, further increasing the bonding area between the anchor steel bars 222 and the concrete, thus improving the overall integrity of the connection. It is worth noting that the embedded steel plate and the anchor steel bar 222 must be securely welded. Preferably, the length of the anchor steel bar 222 can be set between 200mm and 300mm, but greater than 200mm is sufficient. This increases the bonding area between the anchor steel bar 222 and the concrete pier 210, better transmitting tensile and shear forces, improving the overall load-bearing capacity of the structure, and reducing concrete cracking.

[0039] In a preferred embodiment of the present invention, the end of the steel truss floor deck 30 has a support vertical bar 310, which is welded to the embedded steel plate 221.

[0040] It should be noted that the ends of the steel truss floor deck 30 usually have support reinforcement, generally including support vertical bars 310 and support horizontal bars. When connecting, the bottom end of the support vertical bars 310 at the end of the steel truss floor deck 30 is welded firmly to the embedded steel plate 221. This method of connecting the support reinforcement and the embedded reinforcement by welding the joint is safe and reliable, convenient to construct, and has good seismic performance.

[0041] In a preferred embodiment of the present invention, there are multiple connecting spaces, which are arranged at intervals along the lateral direction, and each connecting space is pre-installed with a connecting structure 20.

[0042] It is worth noting that, considering that the steel truss floor deck 30 has a certain width, in order to ensure stable end connections and uniform stress distribution, multiple connection structures 20 need to be provided for end connections. Therefore, multiple connection spaces are set at intervals along the transverse direction, and one connection structure 20 is pre-installed in each connection space. During construction, multiple support vertical bars 310 at the ends of the steel truss floor deck 30 need to be welded to the pre-embedded steel plates 221 at each location.

[0043] Furthermore, the load-bearing brick wall structure 10 also includes an intermediate load-bearing brick wall, which is disposed between the two end load-bearing brick walls 110, and the intermediate load-bearing brick wall has L-shaped openings 120 reserved on both sides.

[0044] It should be noted that in some application scenarios with a large length span, it is not advisable to set excessively long steel truss floor decks 30. Therefore, multiple steel truss floor decks 30 can be combined. Thus, an intermediate load-bearing brick wall can be built in the middle, which is set between the two end load-bearing brick walls 110 as an intermediate connection structure. In order to facilitate the connection of steel truss floor decks 30 on both sides, L-shaped openings 120 are reserved on both sides of the intermediate load-bearing brick wall. Thus, the steel truss floor deck 30 on each side is connected between one end load-bearing brick wall 110 and one side of the intermediate load-bearing brick wall.

[0045] Furthermore, the length of the section of the steel truss floor slab 30 located on the end load-bearing brick wall 110 is greater than half the thickness of the end load-bearing brick wall 110.

[0046] It is understood that the thickness of the end load-bearing brick wall 110 here refers to its longitudinal thickness. Therefore, the length of the section of the steel truss floor slab 30 located on the end load-bearing brick wall 110 exceeds half the wall thickness to ensure stable stress distribution at the end and improve the overall structural connection stability. Furthermore, the steel truss floor slab 30 has two layers of longitudinal reinforcing bars 320 arranged vertically at intervals. Therefore, the longitudinal reinforcing bars 320 extending to the end (the length of the section on the end load-bearing brick wall 110) also exceeds half the wall thickness. Please refer to the appendix for details. Figure 4 .

[0047] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A steel bar truss floor deck connecting structure characterized by, This includes load-bearing brick wall structures, connecting structures, and steel truss floor slabs; among which, The load-bearing brick wall structure includes two longitudinally opposed end load-bearing brick walls. Each end load-bearing brick wall has an L-shaped opening on its adjacent side for placing the end of a steel truss floor slab. Furthermore, the horizontal section of each end load-bearing brick wall at the L-shaped opening is recessed downwards to form a connection space for the pre-installation of the connection structure. The connection structure includes a concrete pier and a pre-embedded connector. The concrete pier is pre-placed in the connection space, and the pre-embedded connector is connected to the top of the concrete pier. The end of the steel truss floor slab is connected to the pre-embedded connector, and the end of the steel truss floor slab is spaced apart from the vertical section of the L-shaped opening of the end load-bearing brick wall.

2. The steel trussed floor deck connection construction according to claim 1, characterized by, The embedded connector includes an embedded steel plate and an anchoring steel bar. The top end of the anchoring steel bar is connected to the bottom of the embedded steel plate, and the bottom end of the anchoring steel bar extends downward into the interior of the concrete pier so that the embedded steel plate is connected to the concrete pier. The end of the steel truss floor deck is connected to the embedded steel plate.

3. The steel trussed floor deck connection assembly according to claim 2, wherein, The ends of the steel truss floor deck have support vertical bars, which are welded to the embedded steel plate.

4. The steel trussed floor deck connection assembly according to claim 1, wherein, The number of connection spaces is multiple, and the multiple connection spaces are arranged at intervals along the horizontal direction, and each connection space has a pre-installed connection structure.

5. The steel trussed floor deck connection assembly according to claim 2, wherein, The length of the anchoring steel bar is 200mm to 300mm.

6. The steel trussed floor deck connection assembly according to claim 1, wherein, The load-bearing brick wall structure also includes an intermediate load-bearing brick wall, which is located between the two end load-bearing brick walls, and the intermediate load-bearing brick wall has L-shaped openings reserved on both sides.

7. The steel trussed floor deck connection assembly according to claim 2, wherein, The concrete pier is rectangular in shape, and its dimensions are 60mm × 100mm × 100mm.

8. The steel trussed floor deck connection construction according to claim 7, characterized by, The concrete pier is made of C20 concrete.

9. The steel trussed floor deck connection assembly according to claim 2, wherein, The number of anchoring steel bars is four, and the four anchoring steel bars are distributed in a square shape.

10. The steel truss floor deck connection structure according to claim 1, characterized in that, The length of the section of the steel truss floor slab located on the end load-bearing brick wall is greater than half the thickness of the end load-bearing brick wall.

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