Pouring deformation resistant net rack laminated wall structure
By combining connecting components with connecting steel bars, the problem of steel bar grid displacement and deformation during the pouring process of the composite wall was solved, enabling convenient storage and transportation of the composite slab, improving construction efficiency and enhancing the building's thermal insulation performance.
Patent Information
- Application Number
- CN202423148747.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-20
AI Technical Summary
In existing technologies, the steel mesh is prone to displacement and deformation during the casting process of composite walls, which leads to a decrease in the quality of the finished product. Furthermore, the use of transverse reinforcement makes the storage and transportation of composite slabs inconvenient.
By using connecting components and connecting steel bars, and connecting the L-shaped connecting steel bars to the fixing holes of the hook part, combined with the V-shaped positioning steel bars, the steel mesh can be quickly positioned and fixed as a whole, avoiding the use of horizontal bars.
It improves the efficiency of building composite walls, simplifies the storage and transportation process, and enhances the building's thermal insulation performance.
Smart Images
Figure CN223548781U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building technology, specifically relating to a space frame composite wall structure that resists casting deformation. Background Technology
[0002] A space frame composite wall is a type of wall constructed from precast composite slabs. The composite slabs are prefabricated in a factory and are typically concrete layers with internal steel mesh. The composite wall is formed by using another layer of steel mesh to sandwich an insulation board together with the composite slabs, and then pouring concrete into the constructed cast-in-place layer to form a second concrete layer, thus creating a composite wall.
[0003] During the pouring process in the cast-in-place layer, the steel mesh in the cast-in-place layer will be squeezed, which can easily cause the steel mesh to shift and deform, affecting the forming quality of the composite wall. The current practice is to add horizontal bars at certain intervals, embed the horizontal bars in the precast concrete layer in advance, and then use the horizontal bars to pass through the insulation layer and tie them to the steel mesh in the cast-in-place layer to limit the movement of the steel mesh.
[0004] However, this method makes the prefabrication process of the composite slab more complicated, and the horizontal ribs are longer. The long horizontal ribs protrude from the outside of the composite slab, making it difficult to store and transport. Utility Model Content
[0005] To address the problems existing in the prior art, this utility model provides a space frame composite wall structure resistant to casting deformation. By adding connecting components and connecting steel bars, the composite slab does not need to be reinforced with horizontal bars, making the storage and transportation of the composite slab more convenient. At the same time, the first steel mesh frame can be quickly positioned and formed as a whole with the precast concrete layer through the cooperation between the connecting components and connecting steel bars, improving the construction efficiency.
[0006] The specific technical solution adopted in this utility model is as follows:
[0007] A composite wall structure with a steel mesh frame resistant to casting deformation includes a precast concrete layer, an insulation layer, and a cast-in-place layer. The insulation layer is located between the precast concrete layer and the cast-in-place layer. A first steel mesh frame is provided within the cast-in-place layer. A connecting component is provided within the insulation layer. The fixing part of the connecting component is connected to the precast concrete layer. The hook part of the connecting component is provided with a fixing hole along the vertical direction. The first steel mesh frame is connected to the hook part of the connecting component by means of connecting steel bars. The connecting steel bars have an L-shaped structure. The horizontal end of the connecting steel bars is tied to the first steel mesh frame. The vertical end of the connecting steel bars passes through the fixing hole of the connecting component and forms a hook engagement.
[0008] The precast concrete layer is provided with a second steel mesh and positioning steel bars. The positioning steel bars have a V-shaped structure, and the tip of the positioning steel bar protrudes from the surface of the precast concrete layer to form a fixed point. The other end of the positioning steel bar is connected to the second steel mesh.
[0009] The fixing part and the hooking part of the connecting component are separate structures. The fixing part is a sleeve-shaped structure. A U-bolt is provided at the end of the fixing part. The U-bolt hooks and cooperates with the fixing point formed by the positioning steel bar. The fixing part is fixedly connected to the precast concrete layer by means of the cooperation of the U-bolt and the fixing point. The cavity of the fixing part is provided with an internal thread. The surface of the hooking part is provided with an external thread that cooperates with the internal thread. The fixing part is threadedly connected to the hooking part by means of the internal thread and the external thread.
[0010] The vertical end of the connecting steel bar is provided with a limiting protrusion, which is located on the side wall of the vertical end of the connecting steel bar. The limiting protrusion prevents the vertical end of the connecting steel bar from disengaging from the hook.
[0011] The beneficial effects of this utility model are:
[0012] This utility model includes a connecting component and connecting steel bars. When building a composite wall, the fixing part of the connecting component is first fixedly connected to the fixing point on the surface of the precast concrete layer. Then, the vertical end of the connecting steel bar is inserted into the fixing hole of the hook part of the connecting component. Finally, the connecting steel bar is tied and fixed to the first steel mesh frame.
[0013] The composite wall with this structure eliminates the need for additional horizontal reinforcement in the composite slab, making storage and transportation more convenient. At the same time, the first steel mesh frame, through the cooperation between connecting components and connecting steel bars, can be quickly positioned and form an integral whole with the precast concrete layer, improving construction efficiency. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This is a top view of the structure of this utility model;
[0016] Figure 3 for Figure 1 An enlarged schematic diagram of part A in the middle;
[0017] In the attached diagram, 1 is the precast concrete layer, 2 is the insulation layer, 3 is the cast-in-place layer, 4 is the first steel mesh frame, 5 is the fixing part, 6 is the hook part, 7 is the fixing hole, 8 is the connecting steel bar, 9 is the second steel mesh frame, 10 is the positioning steel bar, 11 is the limiting protrusion, and 12 is the U-bolt. Detailed Implementation
[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:
[0019] Specific embodiments, such as Figure 1-3 As shown, this utility model provides a composite wall structure with a grid frame that resists casting deformation, including a precast concrete layer 1, an insulation layer 2, and a cast-in-place layer 3. The insulation layer 2 is located between the precast concrete layer 1 and the cast-in-place layer 3. A first steel grid frame 4 is provided in the cast-in-place layer 3. A connecting component is provided in the insulation layer 2. The fixing part 5 of the connecting component is connected to the precast concrete layer 1. The hook part 6 of the connecting component is provided with a fixing hole 7 in the vertical direction. The first steel grid frame 4 is connected to the hook part 6 of the connecting component by means of connecting steel bars 8. The connecting steel bars 8 have an L-shaped structure. The horizontal end of the connecting steel bars 8 is tied to the first steel grid frame 4. The vertical end of the connecting steel bars 8 passes through the fixing hole 7 of the connecting component and forms a hook engagement.
[0020] During the pouring process within the cast-in-place layer 3, the steel mesh within it is compressed, which can easily cause the steel mesh to shift or deform, affecting the forming quality of the composite wall. The current practice is to add horizontal reinforcement bars at certain intervals, pre-embedding these bars within the precast concrete layer 1, and then using these bars to pass through the insulation layer 2 and tie them to the steel mesh within the cast-in-place layer 3, thus limiting the steel mesh's position. However, this method results in a cumbersome prefabrication process for the composite slab, and the horizontal reinforcement bars are quite long, with long protruding bars on the outer side of the composite slab, making storage and transportation difficult.
[0021] Therefore, this utility model is provided with a connecting component and a connecting steel bar 8. When building a composite wall, the fixing part 5 of the connecting component is first fixedly connected to the fixing point on the surface of the precast concrete layer 1. Then, the vertical end of the connecting steel bar 8 is inserted into the fixing hole 7 of the hook part 6 of the connecting component. Finally, the connecting steel bar 8 is tied and fixed to the first steel mesh frame 4.
[0022] The composite wall with this structure eliminates the need for additional horizontal reinforcement in the composite slab, making storage and transportation more convenient. At the same time, the first steel mesh frame 4, through the cooperation between the connecting components and the connecting steel bars 8, can be quickly positioned and form an integral whole with the precast concrete layer 1, improving construction efficiency.
[0023] like Figure 1-2 As shown, a second steel mesh 9 and a positioning steel bar 10 are provided in the precast concrete layer 1. The positioning steel bar 10 has a V-shaped structure, and the tip of the positioning steel bar 10 protrudes from the surface of the precast concrete layer 1 and forms a fixed point. The other end of the positioning steel bar 10 is connected to the second steel mesh 9. The setting of the positioning steel bar 10 increases the structural strength of the precast concrete layer 1 on the one hand, and provides a fixed point for fixing the connecting component fixing part 5 on the other hand.
[0024] like Figure 1-2As shown, the fixing part 5 and the hook part 6 of the connecting component are separate structures. The fixing part 5 is a sleeve-shaped structure. The end of the fixing part 5 is fixedly connected to the precast concrete layer 1 by means of the fixing point formed by the positioning steel bar 10. The cavity of the fixing part 5 is provided with an internal thread. The surface of the hook part 6 is provided with an external thread that mates with the internal thread. The fixing part 5 is threadedly connected to the hook part 6 by means of the internal thread and the external thread. In this utility model, the connection between the fixing part 5 and the hook part 6 is made of plastic material. The plastic material has a low thermal conductivity, which can cut off the cold bridge, thereby improving the thermal insulation performance of the building.
[0025] like Figure 3 As shown, the vertical end of the connecting steel bar 8 is provided with a limiting protrusion 11. The limiting protrusion 11 is located on the side wall of the vertical end of the connecting steel bar 8. The limiting protrusion 11 prevents the vertical end of the connecting steel bar 8 from detaching from the hook part 6. During the concrete pouring process in the cast-in-place layer 3, as the top surface of the concrete rises, the concrete surface will reach the connecting steel bar 8 and continue to rise. The concrete may push up the connecting steel bar 8 and cause the vertical end of the connecting steel bar 8 to detach from the fixing hole 7, resulting in the connecting steel bar 8 detaching from the connecting component. Therefore, the vertical end of the connecting steel bar 8 is provided with a limiting protrusion 11. The sum of the diameter of the vertical end and the width of the limiting protrusion 11 is slightly larger than the diameter of the fixing hole 7. Since the hook part 6 of the connecting steel bar 8 and the connecting component is made of metal, and metal has a certain degree of plasticity, a little force can press the vertical end of the connecting steel bar 8 with the limiting protrusion 11 into the fixing hole 7, and the upward thrust generated by the concrete will not be too large. Therefore, the limiting protrusion 11 can prevent the vertical end of the connecting steel bar 8 from detaching from the hook part 6.
Claims
1. A composite wall structure with a grid structure resistant to casting deformation, comprising a precast concrete layer (1), an insulation layer (2), and a cast-in-place layer (3), wherein the insulation layer (2) is located between the precast concrete layer (1) and the cast-in-place layer (3), and a first steel grid (4) is provided within the cast-in-place layer (3), characterized in that, The insulation layer (2) is provided with a connecting component. The fixing part (5) of the connecting component is connected to the precast concrete layer (1). The hook part (6) of the connecting component is provided with a fixing hole (7) in the vertical direction. The first steel mesh frame (4) is connected to the hook part (6) of the connecting component by means of the connecting steel bar (8). The connecting steel bar (8) has an L-shaped structure. The horizontal end of the connecting steel bar (8) is tied to the first steel mesh frame (4). The vertical end of the connecting steel bar (8) passes through the fixing hole (7) of the connecting component and forms a hook engagement.
2. The space frame composite wall structure resistant to casting deformation according to claim 1, characterized in that, The precast concrete layer (1) is provided with a second steel mesh (9) and a positioning steel bar (10). The positioning steel bar (10) has a V-shaped structure. The tip of the positioning steel bar (10) protrudes from the surface of the precast concrete layer (1) and forms a fixed point. The other end of the positioning steel bar (10) is connected to the second steel mesh (9).
3. The space frame composite wall structure resistant to casting deformation according to claim 1, characterized in that, The fixing part (5) and hook part (6) of the connecting assembly are of a split structure. The fixing part (5) is of a sleeve-shaped structure. The end of the fixing part (5) is provided with a U-bolt (12). The U-bolt (12) hooks and cooperates with the fixed point formed by the positioning steel bar (10). The fixing part (5) forms a fixed connection with the precast concrete layer (1) by means of the cooperation of the U-bolt (12) and the fixed point. The cavity of the fixing part (5) is provided with an internal thread. The surface of the hook part (6) is provided with an external thread that cooperates with the internal thread. The fixing part (5) forms a threaded connection with the hook part (6) by means of the internal thread and the external thread.
4. A space frame composite wall structure resistant to casting deformation according to claim 1, characterized in that, The vertical end of the connecting steel bar (8) is provided with a limiting protrusion (11). The limiting protrusion (11) is located on the side wall of the vertical end of the connecting steel bar (8). The limiting protrusion (11) prevents the vertical end of the connecting steel bar (8) from disengaging from the hook part (6).