Prefabricated concrete hollow wall capable of limiting reinforcing mesh in two directions
By using tie members welded with C-shaped and Z-shaped bars in precast concrete hollow walls, bidirectional limiting of wall panels A and B is achieved, solving the problem of poor anti-bulging ability in existing technologies and improving the wall's stress performance and material utilization efficiency.
Patent Information
- Application Number
- CN202423243362.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-27
AI Technical Summary
The existing tie-fit structure for forming double-sided composite shear walls has the problem of poor anti-bulging ability, which affects the accuracy of the position of the steel mesh and the structural safety of the wall, and the cost is relatively high.
The tie rods are made of C-shaped and Z-shaped bars welded together. The C-shaped bars support the steel mesh of the wall panel A, and the Z-shaped bars hook onto the steel mesh of the wall panels A and B, so as to achieve bidirectional limiting of the wall panels A and B, ensuring the positional accuracy of the steel mesh and the anti-bulging effect.
It achieves bidirectional limiting of steel mesh, ensuring better structural performance of the wall, preventing wall panel bulging, reducing material consumption and cost, and adapting to the combination needs of walls of different heights.
Smart Images
Figure CN223675601U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of fabricated building engineering, and particularly relates to a prefabricated concrete hollow wall capable of bidirectional limiting of reinforcement mesh. BACKGROUND
[0002] The prefabricated hollow wall is a commonly used fabricated reinforced concrete prefabricated component, is preformed in a factory, and is then subjected to secondary pouring at a construction site to form a load-bearing wall. The prefabricated hollow wall is composed of a prefabricated A-face wall plate, a prefabricated B-face wall plate and a cavity, and the prefabricated A-face wall plate and the prefabricated B-face wall plate are connected by a tie member. The reinforcement mesh of the wall body is arranged in the concrete of the prefabricated A-face wall plate and the prefabricated B-face wall plate, respectively.
[0003] At present, the forming process of the prefabricated hollow wall is as follows: the wall body reinforcement mesh is bound and placed in position, the B-face wall plate is first poured to the design thickness, and after curing, the B-face wall plate is turned over by 180°, and then the A-face wall plate is poured to the design thickness. Since the A-face wall plate and the B-face wall plate are connected and supported by the tie member, a cavity is formed in the middle, and then a prefabricated double-sided composite shear wall is formed. This process is commonly referred to as a flip-over and insert forming process.
[0004] In the flip-over and insert forming process, the tie member plays a crucial role. Firstly, the tie member plays a role in controlling precision during product forming. Secondly, the tie member plays a role in preventing the A-face wall plate and the B-face wall plate from expanding during on-site pouring. Thirdly, the application of different tie members affects the cost of the product.
[0005] The structure of the tie member for forming the double-sided composite shear wall includes:
[0006] Complete cast-in-place type (commonly known as a hook bar): The hook bar is arranged in a point type and is the same as a cast-in-place shear wall, and is only horizontally operated during the prefabrication process and is connected with the reinforcement mesh of the A-face and B-face prefabricated wall plates. The hook bar only ties the reinforcement mesh of the A-face and the B-face, and only has a pulling function, without a supporting function, i.e., without an overall limiting function of the reinforcement mesh. In addition, the hook bar and the wall body reinforcement mesh are connected by binding, which is a loose connection. During the flip-over and insert forming process, the A-face reinforcement mesh will float upward due to the resistance of the concrete, i.e., the actual position of the load-bearing reinforcement mesh cannot meet the design requirements, which affects the load-bearing safety of the wall body. Since the reinforcement mesh cannot reach the design required depth in the concrete, the anti-expansion ability is greatly reduced during the pouring of the cavity concrete.
[0007] Steel bar truss type: length arrangement, that is, length line type arrangement along A, B face prefabricated wall plate; and steel bar net binding connection of A, B face prefabricated wall plate. Because of adopting length line type length arrangement's pull together, serious waste steel bar, raise cost. Contrary to pull hook steel bar, truss type only has the function of supporting, does not have the function of pulling, that is, the upper and lower ends of truss steel bar are bound in two wall steel bar nets, and when cavity concrete is poured, only the pulling force of the upper and lower ends of truss steel bar deeply into the concrete can be relied on to control, that is, because truss steel bar cannot hook A, B wall steel bar net, the anti-expansion function of this structure is greatly reduced. Content of the utility model
[0008] In view of the above problems, the utility model aims at providing a prefabricated concrete hollow wall capable of bidirectional limiting steel bar net to solve the problem of poor anti-expansion ability of the existing pull together for forming double-sided composite shear wall.
[0009] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0010] The utility model provides a prefabricated concrete hollow wall capable of bidirectional limiting steel bar net, which comprises A face prefabricated wall plate and B face prefabricated wall plate arranged in parallel and a plurality of pull togethers connecting the A face prefabricated wall plate and the B face prefabricated wall plate, wherein the pull together comprises C type steel bar and Z type steel bar welded together, the lower ends of the C type steel bar and the Z type steel bar are embedded in the B face prefabricated wall plate and are hooked on the B face wall plate steel bar net inside the B face prefabricated wall plate, the upper ends of the C type steel bar and the Z type steel bar are embedded in the A face prefabricated wall plate, the C type steel bar holds the A face wall plate steel bar net inside the A face prefabricated wall plate, and the Z type steel bar is hooked on the A face wall plate steel bar net.
[0011] The C type steel bar comprises C type steel bar stand and C type steel bar upper hook and C type steel bar lower hook arranged at the two ends of the C type steel bar stand, wherein the C type steel bar lower hook is hooked on the outside of the bottom steel bar of the B face wall plate steel bar net, and the C type steel bar upper hook is held at the bottom steel bar of the A face wall plate steel bar net.
[0012] The C type steel bar upper hook and the C type steel bar lower hook are straight rod sections and are perpendicular to the C type steel bar stand.
[0013] The Z type steel bar comprises Z type steel bar stand and Z type steel bar upper hook and Z type steel bar lower hook arranged at the two ends of the Z type steel bar stand, wherein the Z type steel bar lower hook is hooked on the outside of the bottom steel bar of the B face wall plate steel bar net, and the Z type steel bar upper hook is hooked on the outside of the top steel bar of the A face wall plate steel bar net.
[0014] The Z type steel bar upper hook and the Z type steel bar lower hook are located on the two sides of the Z type steel bar stand respectively, and the Z type steel bar upper hook and the Z type steel bar lower hook are perpendicular to the Z type steel bar stand.
[0015] The Z-shaped steel bar stand is fixedly connected with the C-shaped steel bar stand through a plurality of welding points, and the distance between the upper hook of the Z-shaped steel bar and the upper hook of the C-shaped steel bar is greater than the thickness of the A-face wallboard steel mesh.
[0016] The C-shaped steel bar and the Z-shaped steel bar are both integrated structures formed by bending steel bars.
[0017] The plurality of tie members are arranged at equal intervals between the A-face prefabricated wallboard and the B-face prefabricated wallboard.
[0018] The A-face prefabricated wallboard and the B-face prefabricated wallboard are both concrete prefabricated boards, the A-face wallboard steel mesh is embedded in the A-face prefabricated wallboard, the B-face wallboard steel mesh is embedded in the B-face prefabricated wallboard, the A-face wallboard steel mesh and the B-face wallboard steel mesh are parallel split structures, or the two ends of the A-face wallboard steel mesh and the B-face wallboard steel mesh are welded laterally by another two groups of steel meshes to form a steel mesh cage shape.
[0019] The prefabricated concrete hollow wall capable of bidirectional limiting steel mesh provided by the utility model has the advantages that the tie member has the functions of supporting and pulling, the A and B wallboard steel meshes are bidirectionally limited, the position of the A and B wallboard steel meshes is accurate, the stress performance of the wall structure is better, the thickness of the steel reinforcement protective layer of the A and B wallboards is fully ensured, and the hollow wall body is not expanded during pouring.
[0020] The utility model adopts point arrangement, uses local materials, and has low cost; the tie member can adjust the specification size of the assembly, that is, the assembly can be calculated at will according to different height of wall body, the best forming and anti-expansion scheme is formed, special equipment is not needed, and the utility model is easy to popularize and apply. ACCURACY
[0021] Figure 1 It is a structure schematic view of the prefabricated concrete hollow wall capable of bidirectional limiting steel mesh provided by the utility model;
[0022] Figure 2 It is a structure schematic view of the tie member in the utility model.
[0023] In the drawing: 1-A-face prefabricated wallboard, 2-A-face wallboard steel mesh, 3-tie member, 4-B-face prefabricated wallboard, 5-B-face wallboard steel mesh, 31-C-shaped steel bar, 311-C-shaped steel bar stand, 312-upper hook of C-shaped steel bar, 313-lower hook of C-shaped steel bar, 32-Z-shaped steel bar, 321-Z-shaped steel bar stand, 322-upper hook of Z-shaped steel bar, 323-lower hook of Z-shaped steel bar, 33-welding point. CONCRETE EMBODIMENT
[0024] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be described in detail below in combination with the drawings and specific embodiments.
[0025] Referring to Figure 1 As shown in the utility model provides a kind of prefabricated concrete hollow wall of bidirectional limiting reinforcement mesh, including parallelly arranged A face prefabricated wallboard 1 and B face prefabricated wallboard 4 and connect A face prefabricated wallboard 1 and B face prefabricated wallboard 4 multiple drawfast 3, wherein drawfast 3 includes C type reinforcement 31 and Z type reinforcement 32 welded together, the lower end of C type reinforcement 31 and Z type reinforcement 32 is embedded in B face prefabricated wallboard 4 and is hooked on B face wallboard reinforcement mesh 5 inside B face prefabricated wallboard 4;The upper end of C type reinforcement 31 and Z type reinforcement 32 is embedded in A face prefabricated wallboard 1, and C type reinforcement 31 lifts A face wallboard reinforcement mesh 2 in A face prefabricated wallboard 1, and Z type reinforcement 32 is hooked on A face wallboard reinforcement mesh 2.
[0026] Referring to Figure 1 And Figure 2 As shown in the utility model embodiment, C type reinforcement 31 includes C type reinforcement vertical rod 311 and C type reinforcement upper hook 312 and C type reinforcement lower hook 313 arranged at the both ends of C type reinforcement vertical rod 311, wherein C type reinforcement lower hook 313 is hooked on the bottom wire outside B face wallboard reinforcement mesh 5, and C type reinforcement upper hook 312 is lifted at the bottom wire of A face wallboard reinforcement mesh 2.
[0027] Preferably, C type reinforcement upper hook 312 and C type reinforcement lower hook 313 are straight rod sections, and C type reinforcement upper hook 312 and C type reinforcement lower hook 313 are located on the same side of C type reinforcement vertical rod 311 and are perpendicular to C type reinforcement vertical rod 311.
[0028] Specifically, the length of C type reinforcement vertical rod 311 is determined according to wall thickness, AB wallboard reinforcement mesh specification, AB wallboard reinforcement cover layer design thickness and other indexes.
[0029] Referring to Figure 1 And Figure 2 As shown in the utility model embodiment, Z type reinforcement 32 includes Z type reinforcement vertical rod 321 and Z type reinforcement upper hook 322 and Z type reinforcement lower hook 323 arranged at the both ends of Z type reinforcement vertical rod 321, wherein Z type reinforcement lower hook 323 is hooked on the bottom wire outside B face wallboard reinforcement mesh 5, and Z type reinforcement upper hook 322 is hooked on the top wire outside A face wallboard reinforcement mesh 2.
[0030] Specifically, Z type reinforcement upper hook 322 and Z type reinforcement lower hook 323 are straight rod sections, and Z type reinforcement upper hook 322 and Z type reinforcement lower hook 323 are respectively located on the two sides of Z type reinforcement vertical rod 321 and are perpendicular to Z type reinforcement vertical rod 321.The length of Z type reinforcement vertical rod 321 is determined according to wall thickness, AB wallboard reinforcement mesh specification, AB wallboard reinforcement cover layer design thickness and other indexes.
[0031] Further, the Z-shaped reinforcing rod stand 321 is fixedly connected with the C-shaped reinforcing rod stand 311 through a plurality of welding points 33, and the spacing L between the upper hook of the Z-shaped reinforcing rod 322 and the upper hook of the C-shaped reinforcing rod 312 is greater than the thickness of the A-face wallboard reinforcing mesh 2. According to the length of the two stands, the welding point position and the specification size are determined.
[0032] Specifically, the C-shaped reinforcing rod 31 and the Z-shaped reinforcing rod 32 are both integral structures formed by bending reinforcing rods, and have high overall rigidity, and the diameter of the reinforcing rod is determined according to force calculation.
[0033] Preferably, a plurality of tie members 3 are arranged at equal intervals between the A-face prefabricated wallboard 1 and the B-face prefabricated wallboard 4.
[0034] In the embodiment, the A-face prefabricated wallboard 1 and the B-face prefabricated wallboard 4 are both concrete prefabricated boards, the A-face wallboard reinforcing mesh 2 is embedded in the A-face prefabricated wallboard 1, and the B-face wallboard reinforcing mesh 5 is embedded in the B-face prefabricated wallboard 4. The A-face wallboard reinforcing mesh 2 and the B-face wallboard reinforcing mesh 5 are parallel split structures, or the two ends of the A-face wallboard reinforcing mesh 2 and the B-face wallboard reinforcing mesh 5 are laterally welded by another two groups of reinforcing meshes to form a reinforcing cage shape, that is, a double-layer and double-direction reinforcing mesh. The A-face wallboard reinforcing mesh and the B-face wallboard reinforcing mesh are both composed of longitudinal and transverse vertical reinforcing rods.
[0035] The embodiment only takes the split binding of the A-face and B-face wallboard reinforcing meshes as an example.
[0036] Referring to Figure 1 As shown in the figure, the total thickness of the prefabricated concrete hollow wall is H, the thickness of the reinforcing steel bar protection layer of the A-face and B-face prefabricated wallboards is H1 and H2 respectively, the thickness of the A-face and B-face prefabricated wallboards is D1 and D2 respectively, and the thickness of the cast-in-place cavity between the A-face and B-face prefabricated wallboards is D.
[0037] The specific implementation process of the prefabricated concrete hollow wall capable of bidirectional limiting of reinforcing mesh sheets is as follows:
[0038] Design: determine the process parameters, limiting member arrangement, wall reinforcement, embedded parts, etc. of the prefabricated concrete hollow wall;
[0039] Tie member preparation: cut and weld according to the design specification size;
[0040] Prepare A-face and B-face wallboard reinforcing meshes;
[0041] Preparation of B face prefabricated wallboard 4: support side mold on the mold table, lay B face wallboard reinforcement mesh protective layer cushion, the height of the cushion is H2; lay B face wallboard reinforcement mesh 5, generally it is single layer two-way reinforcement mesh that is bound (or welded), namely longitudinal reinforcement and transverse reinforcement; lay tie 3 at the specified position, the bottom of tie 3 hooks the bottom reinforcement of B face wallboard reinforcement mesh 5, and is bound firmly; install embedded parts (such as wire pipe, wire box, etc.); B face wallboard concrete pouring; rough surface treatment, generally manual roughening; curing and forming;
[0042] Preparation of A face prefabricated wallboard 1:
[0043] Bind A face wallboard reinforcement mesh 2 on the formed B face prefabricated wallboard 4, to ensure that A face wallboard reinforcement mesh 2 is clamped between the upper hook 322 of Z-shaped reinforcement and the upper hook 312 of C-shaped reinforcement; support side mold on the mold table; install embedded parts (such as wire pipe, wire box, etc.); pour concrete in the side mold; the prefabricated B face prefabricated wallboard 4 is turned over 180 degrees together with the bound A face wallboard reinforcement mesh 2, and is inserted into the side mold as a whole;
[0044] Rough surface treatment: generally manual roughening;
[0045] Curing and forming, demolding together, product completion.
[0046] Specifically, A, B face wallboard reinforcement mesh can also be bound together first, install tie 3 at the specified position, and then pour and form according to the above forming procedure.
[0047] In the embodiment of the application, tie 3 has the functions of supporting and pulling at the same time; the supporting function of C-shaped reinforcement 31 ensures the accurate position of A face wallboard reinforcement mesh 2 and B face wallboard reinforcement mesh 5, so that the wall structure has better stress performance; the supporting and pulling hook function of tie 3 enables A face wallboard reinforcement mesh 2 and B face wallboard reinforcement mesh 5 to participate in the limiting and pulling of the tie as a whole, so that the hollow wall does not rise during pouring; at the same time, the thickness of the A, B face wallboard reinforcement mesh protective layer is fully guaranteed. The specification size of the combination of tie 3 can be adjusted, that is, for different height walls, the combination can be calculated arbitrarily to form the best forming and anti-expansion scheme.
[0048] The prefabricated concrete hollow wall capable of bidirectional limiting of reinforcement mesh provided by the utility model adopts point type arrangement of tie 3, is low in cost, simple and easy to operate, accurate in alignment, does not need special equipment, and is easy to popularize and apply.
[0049] The above description is only an embodiment of the utility model, and is not used to limit the protection scope of the utility model. Any modification, equivalent replacement, improvement, expansion, etc. made within the spirit and principle of the utility model are included in the protection scope of the utility model.
Claims
1. A prefabricated concrete hollow wall capable of bidirectional limiting of reinforcement mesh, comprising A-side prefabricated wall panels (1) and B-side prefabricated wall panels (4) arranged in parallel and a plurality of tie members (3) connecting the A-side prefabricated wall panels (1) and the B-side prefabricated wall panels (4), characterized in that, The tie member (3) comprises a C-shaped rib (31) and a Z-shaped rib (32) welded together, the lower ends of the C-shaped rib (31) and the Z-shaped rib (32) are embedded in the B-face prefabricated wallboard (4) and are hooked on the B-face wallboard reinforcement mesh (5) inside the B-face prefabricated wallboard (4); the upper ends of the C-shaped rib (31) and the Z-shaped rib (32) are embedded in the A-face prefabricated wallboard (1), and the C-shaped rib (31) supports the A-face wallboard reinforcement mesh (2) in the A-face prefabricated wallboard (1), and the Z-shaped rib (32) is hooked on the A-face wallboard reinforcement mesh (2).
2. The prefabricated concrete hollow wall capable of bidirectional limiting steel mesh according to claim 1, characterized in that, The C-shaped rib (31) comprises a C-shaped rib vertical rod (311) and a C-shaped rib upper hook (312) and a C-shaped rib lower hook (313) arranged at both ends of the C-shaped rib vertical rod (311), wherein the C-shaped rib lower hook (313) is hooked on the outside of the bottom rib of the B-face wallboard reinforcement mesh (5), and the C-shaped rib upper hook (312) is supported at the bottom rib of the A-face wallboard reinforcement mesh (2).
3. The prefabricated concrete hollow wall capable of bidirectional limiting steel mesh according to claim 2, characterized in that, The C-shaped rib upper hook (312) and the C-shaped rib lower hook (313) are both straight rod sections and are perpendicular to the C-shaped rib vertical rod (311).
4. The prefabricated concrete hollow wall capable of bidirectional limiting steel mesh according to claim 2, characterized in that, The Z-shaped rib (32) comprises a Z-shaped rib vertical rod (321) and a Z-shaped rib upper hook (322) and a Z-shaped rib lower hook (323) arranged at both ends of the Z-shaped rib vertical rod (321), wherein the Z-shaped rib lower hook (323) is hooked on the outside of the bottom rib of the B-face wallboard reinforcement mesh (5), and the Z-shaped rib upper hook (322) is hooked on the outside of the top rib of the A-face wallboard reinforcement mesh (2).
5. The prefabricated concrete hollow wall capable of bidirectional limiting steel mesh according to claim 4, characterized in that, The Z-shaped rib upper hook (322) and the Z-shaped rib lower hook (323) are respectively located on both sides of the Z-shaped rib vertical rod (321), and the Z-shaped rib upper hook (322) and the Z-shaped rib lower hook (323) are both perpendicular to the Z-shaped rib vertical rod (321).
6. The prefabricated concrete hollow wall capable of bidirectional limiting steel mesh according to claim 4, characterized in that, The Z-shaped rib vertical rod (321) and the C-shaped rib vertical rod (311) are fixedly connected through a plurality of welding points (33), and the distance between the Z-shaped rib upper hook (322) and the C-shaped rib upper hook (312) is greater than the thickness of the A-face wallboard reinforcement mesh (2).
7. The prefabricated concrete hollow wall with bidirectional limiting steel mesh according to claim 1, characterized in that, The C-shaped rib (31) and the Z-shaped rib (32) are both integral structures formed by bending steel bars.
8. The prefabricated concrete hollow wall capable of bidirectional limiting steel mesh according to claim 1, characterized in that, A plurality of the tie members (3) are arranged at equal intervals between the A-face prefabricated wallboard (1) and the B-face prefabricated wallboard (4).
9. The prefabricated concrete hollow wall capable of bidirectional limiting steel mesh according to claim 1, characterized in that, The A-face prefabricated wallboard (1) and the B-face prefabricated wallboard (4) are both concrete prefabricated boards, the A-face wallboard reinforcement mesh (2) is embedded in the A-face prefabricated wallboard (1), and the B-face wallboard reinforcement mesh (5) is embedded in the B-face prefabricated wallboard (4). The A-face wallboard reinforcement mesh (2) and the B-face wallboard reinforcement mesh (5) are parallel split structures, or the two ends of the A-face wallboard reinforcement mesh (2) and the B-face wallboard reinforcement mesh (5) are laterally welded by another two groups of reinforcement meshes to form a reinforcement cage shape.