Steel structure composite floor structure integrated with steel bar truss floor support plate

Abstract

This utility model discloses a steel structure composite floor slab structure with integrated steel truss floor deck, belonging to the field of steel structure building construction technology. It includes a base slab, a steel truss, and a fixing device fixed to the base slab. The fixing device includes a support clamp with an elastic arc opening and a fixing assembly including a fixing seat and a rotating block. The support clamp is used to quickly position the lower chord steel bars of the steel truss by engaging them. The rotating block is rotatably mounted on the fixing seat and has a notch for engaging the crossbars of the steel truss, and is threaded with fastening screws. This utility model solves the problems of difficult installation and positioning, low efficiency, and insufficient fixing reliability of steel trusses in the prior art by combining elastic locking with mechanical fastening, and has the beneficial effects of convenient installation, accurate positioning, and firm and reliable connection.

Description

Technical Field

[0001] This utility model belongs to the field of steel structure building construction technology, and in particular relates to a steel structure composite floor slab structure with integrated steel truss floor deck. Background Technology

[0002] In modern construction engineering, steel structure buildings are widely used due to their advantages such as fast construction speed, high strength, and good seismic performance. As an important component of the steel structure system, composite floor slab structures generally adopt steel truss floor decks. These floor decks combine the functions of the reinforcing steel bars in the floor slab with the construction scaffolding. They can not only serve as permanent formwork for pouring concrete, but their own steel truss can also replace some of the reinforcing steel bars, thereby simplifying the on-site steel bar binding work and shortening the construction period.

[0003] The traditional process of installing steel truss floor slabs typically involves laying profiled steel sheets on steel beams as a bottom formwork, then hoisting the prefabricated steel truss onto the slab. The crucial step is securing the steel truss to the slab. Current practices involve construction workers manually adjusting the heavy truss to its designed position, requiring one or more people to stabilize it, while another person uses electric welding to spot-weld the lower chord reinforcement of the truss to the slab.

[0004] However, during the aforementioned installation process, due to the inherent length and weight of the steel truss, relying entirely on manual precision alignment and temporary support is not only labor-intensive but also time-consuming. Especially during welding and fixing, the truss is prone to displacement due to unstable manual support, making it difficult to guarantee installation accuracy. This wet-work method, heavily reliant on manual operation, significantly reduces overall construction efficiency, and the initial stability and reliability of the connections depend entirely on the workers' skill level, leaving potential quality risks for subsequent concrete pouring and other processes.

[0005] Therefore, this utility model proposes a steel structure composite floor slab structure with integrated steel truss floor decking to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a steel structure composite floor slab structure with integrated steel truss floor deck, which aims to improve the problems of difficult positioning of steel truss during installation, reliance on manual support, low installation efficiency and insufficient fixation reliability in the existing technology.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a steel structure composite floor slab structure with integrated steel truss floor deck, comprising a base plate, a steel truss installed on the upper surface of the base plate, and a fixing device fixed to the upper surface of the base plate; the steel truss includes a lower chord steel bar and crossbars spaced above the lower chord steel bar; The fixing device includes a support clamp and a fixing component. The support clamp is elastic and has an arc-shaped opening for laterally engaging the lower chord reinforcing bar. The fixing component includes a fixing seat and a rotating block. The fixing seat is fixedly connected to the top of the base plate, and the rotating block is rotatably mounted on the fixing seat. A rotating rod is fixedly connected inside the rotating block, and a fastening screw is threaded onto the rotating block. Furthermore, the support clamping block elastically positions the lower chord steel bar of the steel truss through its arc opening, while the rotating block of the fixing component has a notch formed on its outer wall for fitting the crossbar, which cooperates with the crossbar of the steel truss. The axis of the fastening screw is perpendicular to the axis of the crossbar, and the fastening screw is adapted to be screwed into a pre-set screw hole in the crossbar for tight fixing. Through the synergistic effect of the support clamping block and the fixing component, the steel truss is stably installed on the base plate. Preferably, it also includes a steel beam, which is located below the base plate, and the base plate is fixedly connected to the top of the steel beam by fixing bolts; Preferably, an iron block is fixedly connected to the bottom of the lower chord steel bar, and the iron block is welded to the upper surface of the base plate; Preferably, the steel truss further includes top chord reinforcement and web reinforcement, wherein the web reinforcement is welded at an angle between the top chord reinforcement and the bottom chord reinforcement; Preferably, the side wall of the base plate is further provided with a connecting component for splicing with another base plate; Preferably, the connecting component includes a T-shaped connecting block, and the side wall of the base plate is provided with a connecting groove for the T-shaped connecting block to be inserted. Preferably, the outer wall of the T-shaped connecting block is fixed with a protrusion, and the interior of the base plate is correspondingly provided with a groove for the protrusion to be inserted; Preferably, one end of the rotating rod is fixedly connected to the inside of the rotating block, while the other end is rotatably accommodated in the fixed base; Preferably, the support clamp is integrally bent from an elastic metal plate, and the arc edge of the support clamp has an outwardly expanding guide slope. Preferably, the crossbar is a hollow tubular structure, and the tube wall of the crossbar has a screw hole for the fastening screw to be screwed in.

[0008] This utility model has the following beneficial effects: 1. This utility model, by setting up a combined fixing device consisting of an elastic support clamp and a threaded locking fixing component, uses the support clamp to quickly and elastically lock the lower chord steel bars of the steel truss, and then uses the rotating block of the fixing component to engage the crossbar and tighten the fixing screws for final locking. This solves the problems of difficult positioning, reliance on manual support, and low installation efficiency in the prior art when installing steel trusses, and achieves the effects of simplified operation, rapid installation and significantly improved construction efficiency.

[0009] 2. This utility model solves the problems of insufficient connection reliability and poor structural stability caused by the single fixing method in the prior art by adopting multiple fixing methods, which combine elastic locking, iron block welding and threaded mechanical locking of fixing components. It achieves the effect of firm and reliable connection, greatly enhances the connection strength between steel truss and base plate and the overall structural safety.

[0010] 3. This utility model solves the problem of uneven joints and height differences that affect construction quality when splicing floor decking by setting a connecting groove on the side wall of the base plate and using a T-shaped connecting block with a protrusion to be inserted into the connecting groove and internal groove of the adjacent base plate for splicing. It achieves the effect of accurate positioning and rapid splicing of the base plate and ensures the overall flatness of the floor slab. Attached Figure Description

[0011] Figure 1 This is a perspective view of a steel structure composite floor slab structure with integrated steel truss floor decking proposed in this utility model; Figure 2 This is a schematic diagram of the base plate of a steel structure composite floor slab structure with integrated steel truss floor decking proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 2 Enlarged view of point B in the middle; Figure 5 This is a schematic diagram of a T-shaped connecting block for a steel structure composite floor slab structure with an integrated steel truss floor deck proposed in this utility model. Figure 6 This is a schematic diagram of the protrusions in a steel structure composite floor slab structure with integrated steel truss floor decking proposed in this utility model.

[0012] Legend: 1. Steel beam; 2. Base plate; 3. Fixing bolts; 4. Lower chord reinforcement; 5. Upper chord reinforcement; 6. Web reinforcement; 7. Iron block; 8. Crossbar; 9. Fixing assembly; 901. Fixing seat; 902. Rotating block; 903. Rotating rod; 904. Fastening screw; 905. Support clamp; 10. Connecting assembly; 1001. T-shaped connecting block; 1002. Connecting groove; 1003. Protrusion; 1004. Groove. Detailed Implementation

[0013] 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.

[0014] Reference Figures 1-6 The present invention provides an embodiment of a steel structure composite floor slab structure with integrated steel truss floor deck, including a base plate 2 and a steel truss. The steel truss is installed on the upper surface of the base plate 2. The steel truss is composed of components such as lower chord steel bars 4 and crossbars 8. The crossbars 8 are spaced above the lower chord steel bars 4. It also includes a fixing device that is fixed to the upper surface of the base plate 2. The fixing device enables the rapid positioning and high-strength locking of the steel truss. The fixing device specifically includes a support clamp 905 and a fixing component 9. The support clamp 905 is fixed to the upper surface of the base plate 2. The support clamp 905 is elastic and has an arc opening for laterally engaging the lower chord steel bar 4. When installing the steel truss, the lower chord steel bar 4 can be quickly pressed in and temporarily elastically clamped and positioned by the arc opening of the support clamp 905. The fixing component 9 is also fixed to the base plate 2 and is used to finally lock and fix the steel truss. The structure of the fixing component 9 includes a fixing seat 901 and a rotating block 902. The bottom of the fixing seat 901 is fixedly connected to the top of the base plate 2, providing a stable installation base for the entire fixing component 9. The rotating block 902 is rotatably installed on the fixing seat 901. Furthermore, a rotating rod 903 is fixedly connected inside the rotating block 902, so that the rotation of the rotating block 902 can drive the rotating rod 903 to rotate synchronously. A fastening screw 904 is also threadedly connected to the rotating block 902. The outer wall of the rotating block 902 has a notch for fitting the crossbar 8. When the rotating block 902 is rotated, the notch of the rotating block 902 can be aligned with and wrap around the crossbar 8 on the steel truss. After the fitting is completed, the fastening screw 904 is tightened. The axis of the fastening screw 904 is perpendicular to the axis of the crossbar 8, and the fastening screw 904 will be screwed into the pre-set screw hole in the crossbar 8. The strong axial force generated by the threaded connection presses against the crossbar 8, thereby firmly locking the steel truss and the fixing component 9 together. It also includes steel beam 1, which is located below the base plate 2. The base plate 2 is fixedly connected to the top of the steel beam 1 by fixing bolts 3, thereby transferring the entire load of the floor slab to the main steel structure. To provide additional fixation strength and enhance the overall structure, an iron block 7 is fixedly connected to the bottom of the lower chord steel bar 4. After the steel truss is initially positioned by the support clamp 905, the bottom surface of the iron block 7 is attached to the upper surface of the base plate 2, and the iron block 7 is firmly connected to the base plate 2 by welding, forming a double fixation guarantee of welding and mechanical locking. At the same time, in order to form a stable triangular support unit, the steel truss also includes an upper chord steel bar 5 and a web steel bar 6. The web steel bar 6 is welded at an angle between the upper chord steel bar 5 and the lower chord steel bar 4. The side wall of the base plate 2 is provided with a structure that cooperates with the connecting component 10. Specifically, the connecting component 10 includes a T-shaped connecting block 1001, and the side wall of the base plate 2 is correspondingly provided with a connecting groove 1002 for the T-shaped connecting block 1001 to be inserted into. In order to achieve more precise positioning and connection, the outer wall of the T-shaped connecting block 1001 is also fixed with a protrusion 1003, and the interior of the base plate 2 is correspondingly provided with a groove 1004 for the protrusion 1003 to be inserted into. When splicing, the T-shaped connecting block 1001 is simultaneously inserted into the connecting groove 1002 of two adjacent base plates 2, and the protrusion 1003 on the T-shaped connecting block 1001 is also embedded into the groove 1004 of each base plate 2, thereby achieving precise positioning and firm splicing of the two base plates 2 in the horizontal and vertical directions. One end of the rotating rod 903 is fixedly connected to the inside of the rotating block 902, while the other end of the rotating rod 903 is rotatably accommodated in the fixed seat 901. This arrangement allows the rotating block 902 to rotate stably and smoothly on the fixed seat 901 with the rotating rod 903 as the axis. To make the insertion process of the lower chord steel bar 4 more convenient and effortless, the structure of the support clamping block 905 is specifically designed such that the support clamping block 905 is integrally bent from an elastic metal plate, thereby obtaining good elasticity and clamping force. The support clamp 905 has an outwardly expanding guide slope at the arc edge. When the lower chord steel bar 4 is pressed against the arc, the lower chord steel bar 4 will first contact the guide slope and smoothly open the arc under pressure, sliding into the snap-fit ​​position. The crossbar 8 is a hollow tubular structure, and a screw hole for the fastening screw 904 to be screwed into is opened on the tube wall of the crossbar 8. The thread of the screw hole matches the thread of the fastening screw 904, ensuring that a reliable threaded connection can be formed between the two.

[0015] Working principle: When laying the floor slab, multiple base plates 2 are first placed side by side on the top of the steel beam 1 below. By inserting the T-shaped connecting block 1001 into the connecting groove 1002 on the side wall of two adjacent base plates 2, and embedding the protrusion 1003 of the T-shaped connecting block 1001 into the groove 1004 inside the base plate 2, the multiple base plates 2 can be quickly spliced ​​and accurately positioned. After splicing, the entire base plate 2 is fixed to the steel beam 1 using fixing bolts 3, thus completing the laying of the foundation load-bearing platform. Next, the steel truss is installed. It is hoisted above the base plate 2. The operator aligns the lower chord steel bar 4 of the truss with the fixed support clamp 905 on the base plate 2 and applies force to press the lower chord steel bar 4 into the arc-shaped opening of the support clamp 905. Thanks to the elasticity of the support clamp 905 and its guiding slope, the lower chord steel bar 4 can smoothly fit into the arc-shaped opening, achieving rapid initial positioning and temporary fixation of the steel truss. Then, the iron block 7 at the bottom of the lower chord steel bar 4 is welded to the upper surface of the base plate 2. First, a first layer of stable connection is formed. Finally, the operator rotates the rotating block 902 of the fixing component 9, so that the rotating block 902 rotates on the fixing seat 901 with the rotating rod 903 as the axis, until the notch of the rotating block 902 completely fits the crossbar 8 of the steel truss. Then, the fastening screw 904 on the rotating block 902 is tightened. The fastening screw 904 is screwed into the screw hole of the crossbar 8 and pressed tightly. The strong thread locking force completely fixes the steel truss and the base plate 2 into one piece, completing the entire installation.

Claims

1. A steel structure composite floor slab structure with integrated steel truss floor deck, comprising a base plate (2) and a steel truss, wherein the steel truss is installed on the upper surface of the base plate (2), and the steel truss comprises a lower chord steel bar (4) and a crossbar (8), wherein the crossbar (8) is spaced above the lower chord steel bar (4); Its features are, Also includes: A fixing device fixed to the upper surface of the base plate (2), the fixing device includes a support clamp (905) and a fixing component (9), the support clamp (905) is elastic and has an arc opening for laterally engaging the lower chord steel bar (4); The fixing component (9) includes a fixing seat (901) and a rotating block (902). The fixing seat (901) is fixedly connected to the top of the base plate (2). The rotating block (902) is rotatably mounted on the fixing seat (901). A rotating rod (903) is fixedly connected inside the rotating block (902). A fastening screw (904) is threaded onto the rotating block (902). The outer wall of the rotating block (902) has a notch for fitting the crossbar (8). The axis of the fastening screw (904) is perpendicular to the axis of the crossbar (8), and the fastening screw (904) is adapted to be screwed into a pre-set screw hole in the crossbar (8) to secure it.

2. The steel composite floor slab structure with integrated steel truss floor decking as described in claim 1, characterized in that: It also includes a steel beam (1), which is located below the base plate (2), and the base plate (2) is fixedly connected to the top of the steel beam (1) by fixing bolts (3).

3. The steel structure composite floor slab structure with integrated steel truss floor decking according to claim 1, characterized in that: The bottom of the lower chord steel bar (4) is fixedly connected to an iron block (7), which is welded to the upper surface of the base plate (2).

4. The steel structure composite floor slab structure with integrated steel truss floor decking according to claim 1, characterized in that: It also includes an upper chord steel bar (5) and a web steel bar (6), wherein the web steel bar (6) is welded at an angle between the upper chord steel bar (5) and the lower chord steel bar (4).

5. The steel composite floor slab structure with integrated steel truss floor decking according to claim 1, characterized in that: The side wall of the base plate (2) is also provided with a connecting component (10) for splicing with another base plate (2).

6. The steel composite floor slab structure with integrated steel truss floor decking according to claim 5, characterized in that: The connecting component (10) includes a T-shaped connecting block (1001), and the side wall of the base plate (2) is provided with a connecting groove (1002) for the T-shaped connecting block (1001) to be inserted.

7. The steel structure composite floor slab structure with integrated steel truss floor decking according to claim 6, characterized in that: The outer wall of the T-shaped connecting block (1001) is fixed with a protrusion (1003), and the interior of the base plate (2) is correspondingly provided with a groove (1004) for the protrusion (1003) to be inserted.

8. The steel structure composite floor slab structure with integrated steel truss floor decking according to claim 1, characterized in that: One end of the rotating rod (903) is fixedly connected to the inside of the rotating block (902), while the other end is rotatably accommodated in the fixed seat (901).

9. The steel structure composite floor slab structure with integrated steel truss floor decking according to claim 1, characterized in that: The support clamp (905) is integrally bent from an elastic metal plate, and the arc edge of the support clamp (905) has an outwardly expanding guide slope.

10. The steel structure composite floor slab structure with integrated steel truss floor decking according to claim 1, characterized in that: The crossbar (8) is a hollow tubular structure, and the tube wall of the crossbar (8) is provided with screw holes for the fastening screws (904) to be screwed in.

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