Post-cast strip prefabricated slab and post-cast strip structure
By using prefabricated post-pouring strip plates, the problems of low construction efficiency and long construction period of post-pouring strips in the existing technology are solved, and efficient construction process and structural strength are achieved.
Patent Information
- Application Number
- CN202421599058.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-08
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-07-08
AI Technical Summary
In the prior art, the post-pouring strips require on-site concrete pouring and long-term maintenance, which is easily affected by the weather, resulting in low construction efficiency and extended construction period.
Prefabricated post-pouring strip plates are used to form a post-pouring strip structure through several prefabricated plates in a linear array along the first direction. Each prefabricated plate is equipped with a steel bar structure layer and a pre-buried steel bar for fixed connection with the connecting steel bars.
Effectively reduce on-site casting and maintenance processes, avoid weather interference, improve construction efficiency, shorten construction period, and enhance the tensile, bending resistance and overall structural strength of the post-cast belt structure.
Smart Images
Figure CN222893797U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building engineering, in particular to a post-cast strip prefabricated board and a post-cast strip structure. Background Art
[0002] A post-cast strip is a concrete strip left at the corresponding positions of the foundation slab, wall, or beam in accordance with design or construction specifications to prevent harmful cracks that may be caused by uneven shrinkage or settlement of the reinforced concrete structure during construction.
[0003] In the prior art, the post-cast strip is formed by pouring concrete on site, and a long period of curing is required after the concrete solidifies, and the curing process is easily affected by the weather; thus, the construction efficiency is reduced, which is not conducive to shortening the construction period.
[0004] It should be noted that the above contents are only used to assist in understanding the technical solution of the present utility model, and do not constitute an admission that the above contents are prior art. Utility Model Content
[0005] The main purpose of the utility model is to provide a post-cast strip prefabricated board and a post-cast strip structure, aiming to effectively improve the construction efficiency and thus shorten the construction period.
[0006] To achieve the above-mentioned purpose, the utility model proposes a post-cast strip prefabricated panel, which is applied to the post-cast strip structure; the post-cast strip structure is formed by a plurality of the post-cast strip prefabricated panels distributed in a linear array along a first direction; a steel structure layer is provided inside each of the post-cast strip prefabricated panels; the post-cast strip prefabricated panel includes a plurality of embedded steel bars, each of the embedded steel bars includes a first end and a second end that are relatively arranged along its axial direction, the first end of the embedded steel bar is arranged inside the post-cast strip prefabricated panel, the second end of the embedded steel bar is exposed outside the post-cast strip prefabricated panel, and the second end of the embedded steel bar is used to be fixedly connected to an external connecting steel bar, wherein the connecting steel bar is installed on the building structure.
[0007] In one embodiment, the side of the post-cast prefabricated panel facing outward is defined as a first surface; the axial direction of each embedded steel bar extends along a second direction, wherein the second direction is perpendicular to the first direction and the second direction is perpendicular to the first surface.
[0008] In one embodiment, the post-cast strip prefabricated plate includes at least two embedded steel bars, and the at least two embedded steel bars are arranged at intervals in the middle area of the first surface.
[0009] In one embodiment, the first end of the embedded steel bar is provided with a first hook-shaped portion, and the first hook-shaped portion is used to hook the steel bar structure layer; and / or the second end of the embedded steel bar is provided with a second hook-shaped portion, and the second hook-shaped portion is used to hook the connecting steel bar.
[0010] In one embodiment, the distance from the second end of the embedded steel bar to the first surface is 200-300 mm.
[0011] In one embodiment, the post-cast strip precast panel includes a second surface, which is arranged opposite to the first surface; the left and right sides of the post-cast strip precast panel along the first direction are provided with arc-shaped surfaces, and the cross-sectional area of the post-cast strip precast panel is gradually increased from the first surface to the second surface along the second direction through the arc-shaped surfaces.
[0012] In one embodiment, the steel bar structure layer includes a plurality of first steel bars arranged transversely and a plurality of second steel bars arranged longitudinally, and the plurality of first steel bars and the plurality of second steel bars are staggered and distributed to form a mesh structure.
[0013] In one embodiment, two adjacent post-cast strip prefabricated panels distributed in a linear array along the first direction are bonded to each other via a bonding layer; specifically, the bonding layer includes but is not limited to waterproof mortar or adhesive.
[0014] In one embodiment, a preset gap is provided between the post-cast strip prefabricated plate and the connecting steel bars.
[0015] In order to achieve the above-mentioned purpose, the utility model provides a post-cast strip structure, comprising any of the above-mentioned post-cast strip prefabricated panels.
[0016] The technical solution of the utility model is to form a post-cast strip structure by using a plurality of post-cast strip prefabricated panels distributed in a linear array along a first direction, wherein the post-cast strip prefabricated panels are pre-cast with concrete. Different from the post-cast strip structure in the prior art which requires on-site casting and subsequent maintenance, the post-cast strip prefabricated panels in the utility model are pre-manufactured, which can effectively reduce the related processes of on-site casting and subsequent maintenance, and avoid the influence of weather to the greatest extent, thereby effectively improving the construction efficiency and shortening the construction period.
[0017] In addition, on the one hand, a steel bar structure layer is provided inside the post-cast strip precast panel, and the steel bar structure layer is used to enhance the structural tensile and bending resistance of the post-cast strip precast panel; on the other hand, embedded steel bars are provided to connect with the connecting steel bars, and the connecting steel bars are used to realize the interconnection between the post-cast strip precast panel and the building structure, so as to ensure the overall structural strength and rigidity of the post-cast strip structure; the combination of the two enables the post-cast strip structure to withstand greater vertical pressure, ensure the stability of the building structure under the action of vertical load, not easily deform, effectively resist parallelism under the action of external force, and maintain the stability of the structural shape; it can maintain its performance for a long time under normal conditions, and provide guarantee for the long-term stability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 This is a structural schematic diagram of an embodiment of a post-cast strip prefabricated plate provided by the utility model;
[0020] Figure 2 The second structural schematic diagram of an embodiment of a post-cast strip prefabricated plate provided by the utility model;
[0021] Figure 3 This is a structural schematic diagram of an embodiment of a post-cast strip structure provided by the utility model.
[0022] Description of reference numerals:
[0023] 1. Post-cast strip prefabricated plate; 101. First surface; 102. Second surface; 103. Arc-shaped curved surface; 2. Steel bar structure layer; 201. First steel bar; 202. Second steel bar; 3. Pre-buried steel bar; 301. First hook-shaped portion; 302. Second hook-shaped portion; 4. Connecting steel bar; 5. Preset gap; 100. Post-cast strip structure;
[0024] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution in the utility model. Obviously, what is described is only a part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0026] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0027] In addition, it should be noted that the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0028] In the prior art, the post-cast strip is formed by pouring concrete on site, and a long period of curing is required after the concrete solidifies, and the curing process is easily affected by the weather; thus, the construction efficiency is reduced, which is not conducive to shortening the construction period.
[0029] In order to solve the above technical problems, the utility model proposes a post-cast strip prefabricated board.
[0030] See also Figure 1-3 In one embodiment of the utility model, the post-cast strip precast panel 1 is applied to a post-cast strip structure 100; the post-cast strip structure 100 is formed by a plurality of post-cast strip precast panels 1 distributed in a linear array along a first direction; a steel structure layer 2 is provided inside each post-cast strip precast panel 1; the post-cast strip precast panel 1 includes a plurality of embedded steel bars 3, each of which includes a first end and a second end that are relatively arranged along its axial direction, the first end of the embedded steel bar 3 is arranged inside the post-cast strip precast panel 1, the second end of the embedded steel bar 3 is exposed outside the post-cast strip precast panel 1, and the second end of the embedded steel bar 3 is used to be fixedly connected to an external connecting steel bar 4, wherein the connecting steel bar 4 is installed on a building structure (not shown in the drawings).
[0031] The technical solution of the utility model adopts a plurality of post-cast strip prefabricated panels 1 distributed in a linear array along a first direction to form a post-cast strip structure 100, wherein the post-cast strip prefabricated panels 1 are pre-cast by concrete pouring. Different from the post-cast strip structure 100 in the prior art which requires on-site pouring and later maintenance, the post-cast strip prefabricated panels 1 in the utility model adopt a pre-manufactured method, which can effectively reduce the related processes of on-site pouring and later maintenance, and avoid the influence of weather to the greatest extent, thereby effectively improving the construction efficiency and shortening the construction period.
[0032] Among them, the concrete used for the post-cast precast slab 1 can be the surplus concrete in the construction process; this is because there will be some surplus concrete during the project construction process, and this part of the surplus concrete is used as the manufacturing material of the post-cast precast slab 1, making full use of the surplus concrete, thereby saving materials and controlling production costs.
[0033] In addition, since the post-cast precast panel 1 made of concrete itself has certain fireproof and waterproof properties, its fireproof property helps to improve the overall fireproof capability of the building; through its waterproof property, there is no need to carry out the laying construction of waterproof membranes etc. separately, which greatly simplifies the construction process, saves the cost of waterproof materials and the labor and time cost of laying waterproof materials, and reduces the risk of leakage caused by damage to waterproof materials.
[0034] In addition, on the one hand, a steel structure layer 2 is provided inside the post-cast strip precast panel 1, and the steel structure layer 2 is used to enhance the structural tensile strength, bending resistance and other capabilities of the post-cast strip precast panel 1; on the other hand, embedded steel bars 3 are provided to be connected with the connecting steel bars 4, and the connecting steel bars 4 are used to realize an indirect connection between the post-cast strip precast panel 1 and the building structure, so as to ensure the overall structural strength and rigidity of the post-cast strip structure 100; the combination of the two enables the post-cast strip structure 100 to withstand greater vertical pressure, ensure the stability of the building structure under the action of vertical loads, not easily deform, effectively resist parallelism under the action of external forces, and maintain the stability of the structural shape; it can maintain its performance for a long time under normal conditions, and provide a guarantee for the long-term stability of the structure.
[0035] Among them, the structural form of the above-mentioned steel bar structure layer 2 has various structures. Figure 2 The steel structure layer 2 includes a plurality of first steel bars 201 arranged transversely and a plurality of second steel bars 202 arranged longitudinally, and the plurality of first steel bars 201 and the plurality of second steel bars 202 are arranged in an interlaced manner to form a mesh structure. In this way, the steel structure layer 2 in which the first steel bars 201 and the second steel bars 202 are arranged in an interlaced manner to form a mesh structure ensures that the tensile strength and bending strength of the post-cast zone precast panel 1 meet the use requirements.
[0036] Among them, two adjacent post-casting strip prefabricated panels 1 distributed in a linear array along the first direction are bonded to each other through an adhesive layer (not shown in the figure); in such a configuration, in actual operation, the length of the post-casting strip structure 100 is relatively long, and it is necessary to splice multiple post-casting strip prefabricated panels 1 to form it; in a certain embodiment, the overall length of the post-casting strip structure 100 is 5400mm, and the length of a single post-casting strip prefabricated panel 1 is 450mm, so the post-casting strip structure 100 needs to be spliced to form 12 post-casting strip prefabricated panels 1. At the same time, an adhesive layer is set between two adjacent post-casting strip prefabricated panels 1 to ensure that the post-casting strip prefabricated panels 1 can be effectively connected to ensure the overall strength of the post-casting strip structure 100, and the structure is simple and practical. Specifically, the adhesive layer includes but is not limited to waterproof mortar or adhesive. It should be noted that after understanding the technical solution of the present application, those skilled in the art can think of other materials for the adhesive layer without creative labor, and they should also belong to the protection scope of the present application.
[0037] As a preferred solution of the above embodiment, refer to the attached Figure 1-2 , the side of the post-cast strip precast panel 1 facing outward is defined as the first surface 101; the axial direction of each embedded steel bar 3 is extended along the second direction, wherein the second direction is perpendicular to the first direction, and the second direction is perpendicular to the first surface 101. In this way, the arrangement of the embedded steel bars 3 is standardized, ensuring that the arrangement of the embedded steel bars 3 of each post-cast strip precast panel 1 is roughly the same, thereby improving the uniformity of the post-cast strip precast panel 1.
[0038] Furthermore, the post-cast strip precast panel 1 includes at least two embedded steel bars 3, and at least two embedded steel bars 3 are arranged at intervals in the middle area of the first surface 101. In this way, by centrally arranging a plurality of embedded steel bars 3 in the middle area of the first surface 101, the embedded steel bars 3 can effectively support the entire post-cast strip precast panel 1, ensuring that the stress distribution of the post-cast strip precast panel 1 is uniform. It can be understood that if a plurality of embedded steel bars 3 are centrally arranged on the single-side edge of the first surface 101, it will cause unbalanced force on the post-cast strip precast panel 1, thereby affecting the connection firmness between the post-cast strip precast panel 1 and the connecting steel bars 4. In this embodiment, two embedded steel bars 3 are arranged.
[0039] Furthermore, the first end of the embedded steel bar 3 is provided with a first hook-shaped portion 301, and the first hook-shaped portion 301 is used to hook the steel bar structure layer 2; in this way, the first hook-shaped portion 301 hooks the steel bar structure layer 2, thereby improving the connection strength between the embedded steel bar 3 and the steel bar structure layer 2. In actual operation, the first end of the embedded steel bar 3 and the steel bar structure layer 2 are first hooked with each other, and then welded to each other to achieve the purpose of mutually fixed connection between the embedded steel bar 3 and the steel bar structure layer 2, which has a simple structure and strong practicality; then it is placed in a forming mold for concrete pouring to form a post-cast strip precast plate 1.
[0040] Furthermore, the second end of the embedded steel bar 3 is provided with a second hook-shaped portion 302, and the second hook-shaped portion 302 is used to hook the connecting steel bar 4. In this way, the second hook-shaped portion 302 hooks the connecting steel bar 4, thereby improving the connection strength between the embedded steel bar 3 and the connecting steel bar 4. In actual operation, the second end of the embedded steel bar 3 and the connecting steel bar 4 are first hooked with each other, and then welded to each other, so as to achieve the purpose of fixing the embedded steel bar 3 and the connecting steel bar 4 to each other, and the structure is simple and practical. Among them, the first hook-shaped portion 301 and the second hook-shaped portion 302 are respectively arranged on the opposite sides of the embedded steel bar 3, so that the embedded steel bar 3 has an S-shaped structure to ensure that the force of the embedded steel bar 3 is balanced.
[0041] Furthermore, the distance from the second end of the embedded steel bar 3 to the first surface 101 is 200-300 mm, that is, the length of the exposed portion of the embedded steel bar 3 is 200-300 mm. In this way, by specifically limiting the length of the exposed portion of the embedded steel bar 3, it is ensured that the exposed portion of the embedded steel bar 3 has sufficient length to be connected to the connecting steel bar 4, thereby ensuring that the post-cast strip prefabricated plate 1 can be effectively connected to the connecting steel bar 4. In this embodiment, the length of the exposed portion of the embedded steel bar 3 is 250 mm.
[0042] As a preferred solution of the above embodiment, refer to the attached Figure 1 , 3 The post-cast strip prefabricated panel 1 includes a second surface 102, which is arranged opposite to the first surface 101; the post-cast strip prefabricated panel 1 is provided with arc-shaped curved surfaces 103 on the left and right sides along the first direction, and the cross-sectional area of the post-cast strip prefabricated panel 1 is gradually increased from the first surface 101 to the second surface 102 along the second direction through the arc-shaped curved surfaces 103. With such arrangement, after the post-cast strip prefabricated panel 1 is installed, it is necessary to fill the gap between the left and right sides of the post-cast strip prefabricated panel 1 and the building structure with waterproof mortar and other materials to ensure that the side of the post-cast strip prefabricated panel 1 is fully fitted and connected with the building structure; if the side of the post-cast strip prefabricated panel 1 is set as a right-angle structure, the waterproof mortar material may not be able to completely fill the inner depth of the gap, thereby causing the post-cast strip prefabricated panel 1 to be unable to be fully fitted and connected with the building structure. Therefore, in this embodiment, the side of the post-cast strip precast panel 1 is provided with an arc surface 103, and the arc surface 103 is used to gradually increase the cross-sectional area of the post-cast strip precast panel 1 along the second direction from the first surface 101 to the second surface 102, thereby facilitating the filling of the waterproof mortar material into the deep interior of the gap, ensuring that the post-cast strip precast panel 1 is fully fitted and connected to the building structure.
[0043] As a preferred solution of the above embodiment, refer to the attached Figure 3, a preset gap 5 is provided between the post-cast strip precast panel 1 and the connecting steel bar 4. With such a configuration, since the side of the post-cast strip precast panel 1 facing outward is defined as the first surface 101 in the above text, the present embodiment can also be described as a preset gap 5 being provided between the first surface 101 of the post-cast strip precast panel 1 and the connecting steel bar 4; considering that if the connecting steel bar 4 and the post-cast strip precast panel 1 are in contact with each other, since the connecting steel bar 4 is made of steel and the post-cast strip precast panel 1 is made of concrete, the long-term contact between the two is likely to cause corrosion and oxidation of the connecting steel bar 4, thereby affecting the self-strength and rigidity of the connecting steel bar 4; therefore, the present embodiment requires a preset gap 5 to be provided between the post-cast strip precast panel 1 and the connecting steel bar 4.
[0044] In this embodiment, the preset gap 5 is 60-70 mm, preferably 50 mm. By specifically limiting the preset gap 5, it is ensured that the post-cast zone prefabricated plate 1 and the connecting steel bar 4 will not contact each other due to external forces, thereby causing corrosion and oxidation of the connecting steel bar 4.
[0045] This embodiment also discloses a post-cast strip structure, including the post-cast strip prefabricated plate of any of the above embodiments. For the specific structure of the post-cast strip prefabricated plate, reference can be made to the above embodiments. Since the post-cast strip structure adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.
[0046] It should be noted that the post-cast strip prefabricated board and other contents of the post-cast strip structure disclosed in the present utility model are prior arts and will not be described in detail here.
[0047] The above are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any direct / indirect application of the present invention in other related technical fields is included in the patent protection scope of the present invention.
Claims
1. A post-cast strip prefabricated board, applied to a post-cast strip structure; characterized in that: The post-cast strip structure is formed by a plurality of post-cast strip precast panels distributed in a linear array along a first direction; a steel structure layer is provided inside each post-cast strip precast panel; the post-cast strip precast panel includes a plurality of embedded steel bars, each of which includes a first end and a second end that are relatively arranged along its axial direction, the first end of the embedded steel bar is arranged inside the post-cast strip precast panel, the second end of the embedded steel bar is exposed outside the post-cast strip precast panel, and the second end of the embedded steel bar is used for fixed connection with external connecting steel bars, wherein the connecting steel bars are installed on the building structure.
2. The post-cast strip prefabricated board according to claim 1, characterized in that: The side of the post-cast prefabricated plate facing outward is defined as a first surface; the axial direction of each embedded steel bar extends along a second direction, wherein the second direction is perpendicular to the first direction and the second direction is perpendicular to the first surface.
3. The post-cast strip prefabricated board according to claim 2, characterized in that: The post-cast strip prefabricated plate includes at least two embedded steel bars, and the at least two embedded steel bars are arranged at intervals in the middle area of the first surface.
4. The post-cast strip prefabricated board according to claim 2, characterized in that: The first end of the embedded steel bar is provided with a first hook-shaped portion, and the first hook-shaped portion is used to hook the steel bar structure layer; and / or the second end of the embedded steel bar is provided with a second hook-shaped portion, and the second hook-shaped portion is used to hook the connecting steel bar.
5. The post-cast strip prefabricated board according to claim 2, characterized in that: The distance from the second end of the embedded steel bar to the first surface is 200-300 mm.
6. The post-cast strip prefabricated board according to claim 2, characterized in that: The post-cast strip precast panel includes a second surface, which is arranged opposite to the first surface; the left and right sides of the post-cast strip precast panel along the first direction are provided with arc-shaped surfaces, and the cross-sectional area of the post-cast strip precast panel is gradually increased from the first surface to the second surface along the second direction through the arc-shaped surfaces.
7. The post-cast strip prefabricated board according to claim 1, characterized in that: The steel bar structure layer includes a plurality of first steel bars arranged transversely and a plurality of second steel bars arranged longitudinally, and the plurality of first steel bars and the plurality of second steel bars are staggered and distributed to form a mesh structure.
8. The post-cast strip prefabricated board according to claim 1, characterized in that: Two adjacent post-cast strip prefabricated panels distributed in a linear array along the first direction are bonded to each other via a bonding layer; specifically, the bonding layer includes but is not limited to waterproof mortar or adhesive.
9. The post-cast strip prefabricated board according to claim 1, characterized in that: A preset gap is provided between the post-cast strip prefabricated plate and the connecting steel bars.
10. A post-cast strip structure, characterized in that: It comprises the post-cast strip prefabricated panel as described in any one of claims 1 to 9.