Floor post-pouring belt structure

Abstract

The utility model discloses a floor post-pouring band structure, including base bottom plate, the post-pouring band is arranged between the adjacent base bottom plate, and the one side of base bottom plate towards post-pouring band is provided with first tenon, and the post-pouring band is provided with first mortise corresponding first tenon, and the upper part horizontal interval of post-pouring band is provided with a plurality of face reinforcement, and the lower part of post-pouring band is provided with bottom reinforcement correspondingly, and the vertical reinforcement is connected between face reinforcement and the bottom reinforcement corresponding below it, and the post-pouring band is arranged with flat steel, and the middle part of flat steel is downward bent and forms bending lower part, and the bending lower part is provided with a plurality of formwork holes for containing face reinforcement, and the upper part of flat steel is parallel to post-pouring band top surface, and face reinforcement, bottom reinforcement are connected with the inboard reinforcement arranged in base bottom plate respectively, and flat steel cooperates face reinforcement, vertical reinforcement and bottom reinforcement and forms rigid connection frame, guarantees that steel framework whole is stable, and flat steel helps more evenly transfer longitudinal stress, and reduces the risk of structure cracking in later period.

Description

Technical Field

[0001] This utility model relates to the field of post-pouring strip technology, specifically to a post-pouring strip structure for floor slabs. Background Technology

[0002] A post-cast strip is a concrete strip left at a corresponding location in the base slab, wall, or beam during building construction to prevent harmful cracks that may occur in reinforced concrete structures due to uneven shrinkage or settlement, as required by design or construction specifications. In existing technologies, post-cast strips are typically designed with reinforcing steel bars and concrete to strengthen the structure. However, due to the large length of the post-cast strip, a large number of reinforcing bars need to be installed, which can easily lead to rebar misalignment or displacement during construction. This is detrimental to further ensuring the overall structural load-bearing capacity and reducing the risk of cracking. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned defects or problems in the background technology and provide a post-cast strip structure for floor slabs.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A post-cast strip structure for floor slabs includes a foundation slab, with post-cast strips arranged between adjacent foundation slabs. A first tenon is provided on the side of the foundation slab facing the post-cast strip, and a first mortise is provided in the post-cast strip corresponding to the first tenon. Several face reinforcement bars are arranged horizontally at intervals in the upper part of the post-cast strip, and bottom reinforcement bars are arranged in the lower part of the post-cast strip. Vertical reinforcement bars connect the face reinforcement bars and the corresponding bottom reinforcement bars below them. Flat steel bars are arranged in the post-cast strip, with the middle of the flat steel bars bent downwards to form a bent lower part. Several template holes for accommodating the face reinforcement bars are provided in the bent lower part. The upper part of the flat steel bars is parallel to the top surface of the post-cast strip. The face reinforcement bars and the bottom reinforcement bars are respectively connected to the slab reinforcement bars arranged in the foundation slab.

[0006] In some embodiments of this utility model, a second tenon groove is provided on the side of the foundation plate facing the post-cast strip, the second tenon groove is located on the side of the first tenon, and the post-cast strip is provided with a second tenon corresponding to the second tenon groove.

[0007] In some embodiments of this utility model, a connector is vertically arranged on the first tenon and the second tenon, and the other end of the connector is located inside the foundation plate.

[0008] In some embodiments of this utility model, the connector includes a connecting body with a U-shaped cross-section, side plates extending from both ends of the connecting body, and a communicating opening at the bottom of the connecting body.

[0009] In some embodiments of this utility model, the protruding dimensions of the first tenon and the second tenon are 0.1-0.4 times the thickness of the post-cast strip, and both the first tenon and the second tenon are arranged between the face reinforcement and the bottom reinforcement.

[0010] In some embodiments of this utility model, the distance between the upper part of the flat steel and the top surface of the post-cast strip is 20-100mm.

[0011] In some embodiments of this utility model, the vertical reinforcing bars are at the same distance from the foundation plates on both sides, and the diameter of the bottom reinforcing bars is greater than the diameter of the top reinforcing bars.

[0012] In some embodiments of this utility model, a waterproof membrane is arranged at the bottom of the foundation slab and the post-pouring strip, and a number of reinforcing steel strips are provided between the post-pouring strip and the waterproof membrane. The two ends of the reinforcing steel strips extend to the bottom of the foundation slab, and the length of the reinforcing steel strips extending to the bottom of the foundation slab is not less than half the width of the post-pouring strip.

[0013] In some embodiments of this invention, the reinforcing steel bars are arranged in parallel.

[0014] In some embodiments of this utility model, the ends of the reinforcing steel strip are provided with a sloping end.

[0015] As can be seen from the above description of this utility model, compared with the prior art, this utility model has the following beneficial effects:

[0016] 1. The bent flat steel, together with the face steel bars, vertical steel bars and bottom steel bars, forms a rigid connection frame to ensure the overall stability of the steel skeleton. At the same time, the flat steel helps to distribute longitudinal stress more evenly and reduce the risk of structural cracking.

[0017] 2. The template holes at the bottom of the bend serve as positioning guides for the face reinforcement, which helps to shorten the installation time of the face reinforcement. At the same time, the bend at the bottom can constrain the arrangement of the face reinforcement, which helps to reduce the impact on the structural bearing capacity caused by the face reinforcement shifting or misaligning during construction.

[0018] 3. The first tenon and the corresponding first tenon of the post-cast strip form an interlocking structure between the foundation plate and the post-cast strip, which helps to improve the shear bearing capacity of the post-cast strip structure. At the same time, after the post-cast strip is poured, the "interlocking" shape of the concave and convex structure helps to disperse local stress and reduce the situation of interface cracking caused by stress concentration. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of Embodiment 2 of the present invention;

[0022] Figure 3 For the present utility model Figure 2 Enlarged view of point A;

[0023] Figure 4 This is a schematic diagram of the connector of this utility model;

[0024] Figure 5 This is a schematic diagram of Embodiment 3 of the present invention;

[0025] Figure 6 This is a schematic diagram of the flat steel of this utility model;

[0026] Figure 7 This is a schematic diagram of Embodiment 4 of the present invention;

[0027] Figure 8 This is a schematic diagram of the reinforcing steel bar of this utility model;

[0028] Explanation of key figure labels:

[0029] 1. Foundation slab; 10. First tenon; 11. Second tenon; 2. Post-pouring strip; 20. Facing reinforcement; 21. Bottom reinforcement; 22. Vertical reinforcement; 23. First tenon; 24. Second tenon; 3. Flat steel; 30. Lower bend; 31. Template hole; 32. Lower hole; 4. Connector; 40. Connecting body; 41. Side plate; 42. Connecting opening; 5. Waterproof membrane; 6. Reinforcing steel strip; 60. Sloping end. Detailed Implementation

[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 preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0031] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0032] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of this utility model.

[0033] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0034] In the claims, description and accompanying drawings of this utility model, the terms "comprising", "having", and variations thereof are used to mean "including but not limited to".

[0035] Example 1, see Figure 1 :

[0036] A post-cast strip structure for floor slabs includes a foundation slab 1, with a post-cast strip 2 arranged between two adjacent foundation slabs 1. The top surface of the post-cast strip 2 is flush with the top surface of the foundation slab 1. Several face steel bars 20 are horizontally spaced at the upper part of the post-cast strip 2, and bottom steel bars 21 are correspondingly arranged at the lower part of the post-cast strip 2. Vertical steel bars 22 are connected between the face steel bars 20 and the corresponding bottom steel bars 21 below them. The face steel bars 20 are correspondingly connected to the slab steel bars arranged in the upper part of the foundation slab 1, and the bottom steel bars 21 are correspondingly connected to the slab steel bars arranged in the lower part of the foundation slab 1. It can be understood that the vertical steel bars 22 are connected by welding, and the face steel bars 20, the vertical steel bars 22, and the slab steel bars are connected by steel bar binding or welding.

[0037] In one implementation, the vertical reinforcing bars 22 are at the same distance from the foundation plates 1 on both sides.

[0038] In one embodiment, the diameter of the bottom reinforcing bar 21 is larger than the diameter of the face reinforcing bar 20. Preferably, the diameter of the bottom reinforcing bar 21 is 14 mm and the diameter of the face reinforcing bar 20 is 12 mm.

[0039] The post-cast strip 2 is provided with flat steel 3, which is positioned above the bottom reinforcing bar 21. The middle of the flat steel 3 is bent downwards, forming a lower bent portion 30. The upper part of the flat steel 3 is parallel to the top surface of the post-cast strip 2. The lower bent portion 30 is provided with several template holes 31 for accommodating the face reinforcing bar 20. The template holes 31 serve as positioning guides for the face reinforcing bar 20, facilitating its passage and shortening the installation time. The lower bent portion 30 can constrain the position of the face reinforcing bar 20 and reduce its displacement during construction, minimizing the impact on the structural bearing capacity due to reinforcing bar misalignment. At the same time, the bent flat steel 3, together with the face reinforcing bar 20, vertical reinforcing bar 22, and bottom reinforcing bar 21, forms a rigid connection frame, ensuring the overall stability of the reinforcing bar skeleton. The flat steel 3 helps to more evenly transmit longitudinal stress, reducing the risk of structural cracking later.

[0040] In one implementation, the spacing between adjacent template holes 31 is 100mm.

[0041] In one embodiment, the distance between the upper part of the flat steel 3 and the top surface of the post-cast strip 2 is 20-100mm.

[0042] The foundation plate 1 is provided with a first tenon 10 on the side facing the post-cast strip 2, and the post-cast strip 2 is provided with a first mortise 23 corresponding to the first tenon 10. The concave and convex structure forms an interlocking relationship between the foundation plate 1 and the post-cast strip 2, which helps to improve the shear bearing capacity of the post-cast strip 2 structure. At the same time, after the post-cast strip 2 is poured, the "interlocking" shape of the concave and convex structure disperses local stress through the interlocking effect, reducing the situation of interface cracking caused by stress concentration.

[0043] Example 2, see Figure 2-4 :

[0044] In one embodiment, the foundation plate 1 is provided with a second tenon 11 on the side facing the post-cast strip 2. The second tenon 11 is located on the side of the first tenon 10, and the post-cast strip 2 is provided with a second tenon 24 corresponding to the second tenon 11.

[0045] In one embodiment, the first tenon 10 is arranged above the second mortise 11, and the distance between the first tenon 10 and the top surface of the base plate 1 and the distance between the second mortise 11 and the bottom surface of the base plate 1 are the same.

[0046] In one embodiment, a connector 4 is vertically arranged on the first tenon 10 and the second tenon 24, with the other end of the connector 4 located inside the base plate 1.

[0047] In one embodiment, the connector 4 includes a connecting body 40 with a U-shaped cross-section and side plates 41 extending from both ends of the connecting body 40, which helps to improve shear bearing capacity and reduce the occurrence of cracking later.

[0048] In one embodiment, the bottom of the connecting body 40 is provided with a connecting opening 42, so that the concrete on the upper and lower sides of the connecting body 40 can be connected to each other during pouring.

[0049] In one embodiment, the protrusion dimensions of the first tenon 10 and the second tenon 24 are 0.1-0.4 times the thickness of the post-cast strip 2, and the first tenon 10 and the second tenon 24 are both arranged between the face steel bar 20 and the bottom steel bar 21.

[0050] Example 3, see Figure 5-6 :

[0051] Repeat Example 1, but the flat steel 3 is not arranged above the bottom reinforcing bar 21. The lower bent part 30 of the flat steel 3 extends downward. The lower bent part 30 is provided with a lower hole 32 corresponding to the bottom reinforcing bar 21. The bottom reinforcing bar 21 passes through the lower hole 32, so that the lower bent part 30 serves as a positioning guide for the face reinforcing bar 20 and the bottom reinforcing bar 21, and at the same time constrains the position of the face reinforcing bar 20 and the bottom reinforcing bar 21.

[0052] Example 4, see Figure 7-8 :

[0053] The embodiment 1 is repeated, but a waterproof membrane 5 is arranged at the bottom of the foundation slab 1 and the post-pouring strip 2. Several reinforcing steel bars 6 are set between the post-pouring strip 2 and the waterproof membrane 5. The two ends of the reinforcing steel bars 6 extend to the bottom of the foundation slab 1, and the length of the reinforcing steel bars 6 extending to the bottom of the foundation slab 1 is not less than half the width of the post-pouring strip 2. The reinforcing steel bars 6 help to reduce the settlement of the post-pouring strip 2 itself and the load above it, and reduce the risk of cracking. The rigid connection frame formed by the reinforcing steel bars 6, flat steel bars 3, face steel bars 20, vertical steel bars 22 and bottom steel bars 21 can better bear the permanent load of the structure and help to disperse local deformation stress, thereby improving the overall durability of the structure.

[0054] In one embodiment, the reinforcing steel bars 6 are arranged in parallel.

[0055] In one embodiment, the ends of the reinforcing steel strip 6 are provided with a sloping end 60.

[0056] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. A post-cast strip structure for floor slabs, characterized in that: The foundation includes a base plate (1), and a post-cast strip (2) is arranged between adjacent base plates (1). A first tenon (10) is provided on the side of the base plate (1) facing the post-cast strip (2). A first mortise (23) is provided in the post-cast strip (2) corresponding to the first tenon (10). Several face steel bars (20) are arranged horizontally at intervals in the upper part of the post-cast strip (2). Bottom steel bars (21) are arranged in the lower part of the post-cast strip (2). Vertical steel bars (22) are connected between the face steel bars (20) and the bottom steel bars (21) below them. Flat steel (3) is arranged in the post-cast strip (2). The flat steel (3) is bent downward in the middle to form a bent lower part (30). Several template holes (31) for accommodating the face steel bars (20) are provided in the bent lower part (30). The upper part of the flat steel (3) is parallel to the top surface of the post-cast strip (2). The face steel bars (20) and the bottom steel bars (21) are respectively connected to the slab steel bars arranged in the base plate (1).

2. The post-cast strip structure for floor slabs according to claim 1, characterized in that: The foundation plate (1) is provided with a second mortise (11) on the side facing the post-cast strip (2). The second mortise (11) is located on the side of the first tenon (10). The post-cast strip (2) is provided with a second tenon (24) corresponding to the second mortise (11).

3. The post-cast strip structure for floor slabs according to claim 2, characterized in that: A connector (4) is vertically arranged on the first tenon (10) and the second tenon (24), and the other end of the connector (4) is located inside the base plate (1).

4. The post-cast strip structure for floor slabs according to claim 3, characterized in that: The connector (4) includes a connecting body (40), the cross-section of the connecting body (40) is U-shaped, the two ends of the connecting body (40) have side plates (41), and the bottom of the connecting body (40) has a connecting opening (42).

5. A post-cast strip structure for floor slabs according to claim 2, characterized in that: The protrusion dimensions of the first tenon (10) and the second tenon (24) are 0.1-0.4 times the thickness of the post-cast strip (2). The first tenon (10) and the second tenon (24) are both arranged between the face steel bar (20) and the bottom steel bar (21).

6. The post-cast strip structure for floor slabs according to claim 1, characterized in that: The distance between the upper part of the flat steel (3) and the top surface of the post-cast strip (2) is 20-100mm.

7. The post-cast strip structure for floor slabs according to claim 1, characterized in that: The vertical reinforcing bars (22) are at the same distance from the foundation slabs (1) on both sides, and the diameter of the bottom reinforcing bars (21) is greater than the diameter of the top reinforcing bars (20).

8. A post-cast strip structure for floor slabs according to any one of claims 1-7, characterized in that: Waterproof membrane (5) is arranged at the bottom of the foundation slab (1) and the post-pouring strip (2). Several reinforcing steel strips (6) are provided between the post-pouring strip (2) and the waterproof membrane (5). The two ends of the reinforcing steel strips (6) extend to the bottom of the foundation slab (1). The length of the reinforcing steel strips (6) extending to the bottom of the foundation slab (1) is not less than half the width of the post-pouring strip (2).

9. A post-cast strip structure for floor slabs according to claim 8, characterized in that: The reinforcing steel bars (6) are arranged in parallel.

10. A post-cast strip structure for floor slabs according to claim 9, characterized in that: The ends of the reinforcing steel bar (6) are provided with a sloping end (60).

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