Concrete chiseling-free post-cast strip construction method

Abstract

The invention discloses a concrete chiseling-free post-cast strip construction method, which belongs to the field of building construction, and comprises the following steps: S1, arranging waterstop integral plates on two sides of a post-cast strip; s2, welding and fixing the integral water stop plate and reinforcing steel bars of the reinforcing cage; the water stop integral plate comprises a water stop steel plate and two lap joint steel plates, and the two lap joint steel plates are arranged on the two vertical sides of the water stop steel plate respectively. The water stop integral plate is composed of a water stop steel plate and lap joint steel plates on the two sides, and an integrated rigid partition structure is formed. The water stop steel plate serves as a core waterproof component and blocks water seepage paths of concrete on the two sides of the post-cast strip. The lap joint steel plates serve as permanent embedded components and are vertically arranged on the two sides of the water stop steel plate, the flowing concrete partition function is achieved, meanwhile, a traditional split partition of a steel reinforcement framework and a dense mesh is replaced, and the problems that the temporary partition dismantling procedure is complex, aggregate residues generated by chiseling are difficult to treat, and materials are wasted are solved.

Description

Technical Field

[0001] The present invention belongs to the field of building structure construction, and specifically relates to a post-cast strip construction method for concrete without chiseling and roughening. Background Technique

[0002] As an important structural measure in modern building structures, the post-cast strip plays a key role in adjusting structural settlement differences and controlling temperature stresses. The typical current construction process of the post-cast strip includes: after the waterproof layer construction is completed, the slab reinforcement is tied, the waterstop steel plate is welded, a wire mesh with dense meshes is erected as a partition, the concrete on both sides is poured in layers, and the partition is chiseled and removed in the later stage and the joint surface is treated. Although this traditional process realizes the isolation of new and old concrete, significant technological defects are exposed in practical engineering applications.

[0003] In the traditional process, the wire mesh with dense meshes is the core component of the temporary partition, and its fixing method adopts a steel bar framework welding system. Specifically, construction workers need to weld special fixing steel bars above and below the waterstop steel plate to form a grid-like support structure, and then lay the wire mesh with dense meshes in the gaps between the steel bars. Although this structural method can ensure the temporary blocking effect during the pouring stage, when the partition needs to be removed during the closing stage of the post-cast strip, defects in multiple aspects are exposed. First, the strong adhesion between the wire mesh with dense meshes and the concrete requires a large amount of manual labor for mechanical breaking during the chiseling operation; a large amount of concrete debris generated during the chiseling and roughening treatment is likely to fall into the dense gaps between the steel bars, and it is difficult for conventional cleaning equipment to completely remove it, and the residual aggregate will directly affect the bonding strength of the post-poured concrete; the wire mesh with dense meshes, as a one-time consumable material, cannot be recycled.

[0004] The patent with the publication number CN219060136U discloses an intercepting structure for the post-cast strip of the prefabricated basement floor slab without chiseling and roughening. Prefabricated concrete thin plates are respectively arranged on both sides above and below the waterstop steel plate as a partition system, and steel bars are embedded in the prefabricated concrete thin plates and welded to the waterstop steel plate for fixation. Since the thin plate and the poured concrete are of the same base material, the thin plate combines well with the concrete on both sides of the post-cast strip and the concrete in the post-cast strip, eliminating the chiseling and roughening process. However, this prefabricated thin plate has an interference problem with the steel bars of the steel cage, and additional formwork is required at the top and bottom to limit the concrete interception range outside the protective layer. Summary of the Invention

[0005] The purpose of the present invention is to provide a post-cast strip construction method for concrete without chiseling and roughening to solve the problems mentioned in the above-mentioned prior art.

[0006] Provided is a post-cast strip construction method for concrete without chiseling and roughening, including:

[0007] S1. Arrange a waterstop integral plate on both sides of the post-cast strip;

[0008] S2. Weld and fix the waterstop integral plate to the steel bars of the steel cage;

[0009] The water-stop integral plate includes a water-stop steel plate and two overlapping steel plates, and the two overlapping steel plates are respectively arranged on the vertical sides of the water-stop steel plate.

[0010] As a further solution of the present invention: the side wall of the overlapping steel plate is provided with a pull-out reinforcement plate.

[0011] The pull-out reinforcement plate, as a lateral extension structure of the overlapping steel plate, forms a mechanical bite with the concrete on the surface after the concrete is poured and solidified. Through the tensile resistance and shear resistance formed by the bonding interface, the bonding strength between the concrete and the overlapping steel plate is enhanced, and the interface detachment caused by shrinkage during the long-term solidification of the concrete is avoided.

[0012] As a further solution of the present invention: the pull-out reinforcement plate has through holes penetrating the side wall.

[0013] When the concrete is poured, it seeps into the through holes and forms anchoring nodes after hardening. Through the mechanical anchoring formed by the concrete in the through holes, the bonding effect between the concrete and the overlapping steel plate is significantly enhanced, and the waterproof failure caused by the formation of interface cracks between the concrete and the overlapping steel plate is avoided.

[0014] As a further solution of the present invention: the pull-out reinforcement plates are continuously arranged along the length direction of the overlapping steel plate, and the pull-out reinforcement plates extend away from the water-stop steel plate.

[0015] On the one hand, this pull-out reinforcement plate structure enhances the anti-detachment effect between the concrete and the overlapping steel plate, and the inclined bonding surface forms mechanical bite and structural limit; on the other hand, the vertically upward extension structure increases the flow path of the seepage water, and when the water seeps, it needs to overcome a path of upward extension, so the anti-seepage effect of the post-cast strip bonding interface is enhanced.

[0016] As a further solution of the present invention: the overlapping steel plate is provided with through holes for the reinforcement bars to penetrate.

[0017] The positions of the through holes match the spacing of the main reinforcement bars of the reinforcement cage, allowing the reinforcement bars to directly pass through, and using welding technology to fix the reinforcement bars and the overlapping steel plate after passing through, so that the reinforcement cage, the water-stop integral plate and the concrete form a stress integral body that operates synergistically, ensuring the strength reliability of the post-cast strip.

[0018] As a further solution of the present invention: it further includes step S3, and S3 specifically includes: applying prestress to the overlapping steel plate in the direction of the post-cast strip, and releasing the prestress after the concrete reaches the initial strength.

[0019] The tensioned lapped steel plate allows for an overpour of concrete in the transverse direction. After the concrete reaches its initial strength, the prestress is released. After the prestress is released, the elastic retraction of the lapped steel plate compensates for the shrinkage deformation of the concrete, preventing the generation of tensile stress between the lapped steel plate and the concrete and ensuring that the lapped steel plate always fits tightly with the concrete.

[0020] As a further aspect of the present invention: The prestress of the lapped steel plates on both sides of the post-cast strip is tensioned towards each other by steel bars welded to the lapped steel plates on both sides, and a temporary fixing member is used to fix between the corresponding steel bars on both sides.

[0021] Since the steel bars are welded and fixed to the lapped steel plates and there is a certain strength between the two, prestress can be applied to the lapped steel plates through the main bars of the steel cage and maintained during the long-term solidification of the concrete, eliminating the need for additional tensioning members and simplifying the process flow. Since the post-cast strip is a symmetric structure, the integral water-stop plates on both sides of the post-cast strip can form a mutual support structure, converging the acting forces to the temporary fixing member and forming a single-point two-way stress system, simplifying the structure of the entire prestress maintenance system.

[0022] As a further aspect of the present invention: The temporary fixing member includes two locking members with their outer walls fixedly connected, and the two locking members are respectively detachably connected to the corresponding steel bars.

[0023] The locking member provides mechanical engagement, flexible disassembly and assembly, and labor-saving effects through a linkage structure, facilitating the operator to disassemble and assemble the two opposing steel bars to maintain and release the prestress. Compared with conventional wire binding and fixing, mechanical engagement by the locking member can prevent the steel bars from slipping and provide a more reliable prestress maintenance effect.

[0024] As a further aspect of the present invention: A cross-bracing assembly is provided between the connecting roots of the relative sides of the two integral water-stop plates.

[0025] The cross-bracing assembly is arranged between the two integral water-stop plates, providing a reaction support for applying prestress to the lapped steel plate, preventing the integral water-stop plates from being displaced due to force, and eliminating the need for additional support equipment.

[0026] As a further aspect of the present invention: The prestress is released after the concrete reaches 40% - 70% of its design strength.

[0027] Premature release of stress when the concrete strength is insufficient may cause the concrete to be damaged. During the concrete solidification process, in the early stage, evaporation and settlement shrinkage are dominant. The formwork restraint and aggregate settlement lead to limited lateral shrinkage. Coupled with the low concrete strength at this stage, there is no need to release prestress prematurely. In the middle stage of concrete solidification, cement hydration consumes internal moisture and early chemical shrinkage are dominant, and the lateral shrinkage intensifies. At this time, the concrete already has a certain compressive strength, and prestress can be released to restore the deformation of the overlapping steel plate to compensate for the interfacial tensile stress generated by concrete shrinkage. In the late stage of concrete solidification, drying shrinkage begins to develop. The volume stability of the component is affected by creep, and the lateral shrinkage rate slows down. At this time, releasing prestress again cannot fully compensate for the partial bonding strength that has been lost at the interface.

[0028] As a further solution of the present invention: the prestress is released after the concrete reaches 40% - 60% of the design strength.

[0029] Since the prestress applied in the present invention mainly acts on the part of the concrete slab near the overlapping steel plate, mainly to achieve shrinkage compensation and prevent interfacial cracks from generating, the acting force applied is smaller than that of the conventional prestressed slab. Therefore, when the concrete has a relatively low strength, it can resist the acting force of the overlapping steel plate without causing structural damage.

[0030] As a further solution of the present invention: the prestress is released after the concrete reaches 40% - 50% of the design strength.

[0031] Further shorten the prestress release time, enhance the shrinkage compensation effect of the overlapping steel plate, and can be used in combination with an expansive agent to reduce the prestress strength.

[0032] As a further solution of the present invention: the prestress is released after the concrete reaches 50% - 60% of the design strength.

[0033] Balance the ratio of the prestress application strength to the concrete shrinkage rate.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0035] 1. The integral water-stop plate is composed of a water-stop steel plate and overlapping steel plates on both sides, forming an integrated rigid partition structure. The water-stop steel plate, as the core waterproof component, blocks the seepage path of the concrete on both sides of the post-cast strip. The overlapping steel plates, as permanent embedded components, are vertically arranged on both sides of the water-stop steel plate. While realizing the function of separating the flowing concrete, they replace the split partition of the traditional steel bar skeleton and dense mesh, and solve the problems of complex removal process of the temporary partition, difficult treatment of the residual aggregates generated by chiseling, and material waste.

[0036] 2. The overlapping steel plate made of metal materials can be welded and fixed to the steel reinforcement cage. The overlapping steel plate replaces the ordinary formwork to achieve separation within the full height pouring range of the concrete, eliminating the need for secondary formwork installation, and significantly simplifying the construction process. Brief Description of the Drawings

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present drawings or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present drawings. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0038] Figure 1 Schematic diagram of the construction process of the post-cast strip for concrete without chiseling the surface

[0039] Figure 2 is Figure 1 the enlarged view of area A in

[0040] Figure 3 One of the schematic diagrams of the structure of the anti-pulling reinforcement plate provided by the embodiment of the present invention

[0041] Figure 4 Two of the schematic diagrams of the structure of the anti-pulling reinforcement plate provided by the embodiment of the present invention

[0042] Figure 5 Three of the schematic diagrams of the structure of the anti-pulling reinforcement plate provided by the embodiment of the present invention

[0043] Figure 6 One of the schematic diagrams of the structure of the temporary fixing member provided by the embodiment of the present invention

[0044] Figure 7 Two of the schematic diagrams of the structure of the temporary fixing member provided by the embodiment of the present invention

[0045] In the figure: 1, integral water stop plate; 11, water stop steel plate; 12, overlapping steel plate; 2, anti-pulling reinforcement plate; 3, temporary fixing member; 31, locking member; 4, cross bracing assembly. Detailed Embodiments

[0046] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following will describe and explain the present invention in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0047] Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, the present invention can also be applied to other similar scenarios based on these drawings. In addition, it can also be understood that although the efforts made in such a development process may be complex and lengthy, for those of ordinary skill in the art related to the content disclosed in the present invention, some design, manufacturing, or production changes made based on the technical content disclosed in the present invention are only conventional technical means and should not be understood as insufficient disclosure of the content of the present invention.

[0048] However, there will be cases where unnecessary details are omitted. For example, there are cases where details of well-known matters are omitted and repeated descriptions of actually identical structures are omitted. This is to avoid the following description from becoming unnecessarily lengthy and to facilitate the understanding of those skilled in the art. In addition, the accompanying drawings and the following description are provided for those skilled in the art to fully understand the present invention and are not intended to limit the subject matter recited in the claims.

[0049] Please refer to Figure 1 As shown, in an embodiment of the present invention, a construction method for a post-cast strip of concrete without chiseling includes the following steps:

[0050] S1. Arrange a water-stop integral plate 1 on both sides of the post-cast strip;

[0051] S2. Weld and fix the water-stop integral plate 1 to the steel bars of the steel reinforcement cage;

[0052] The water-stop integral plate 1 includes a water-stop steel plate 11 and two overlapping steel plates 12, and the two overlapping steel plates 12 are respectively arranged on the vertical two sides of the water-stop steel plate 11.

[0053] The overlapping steel plate 12 and the water-stop steel plate 11 form the water-stop integral plate 1 by welding or integrally molding. The water-stop steel plate 11 serves as a rigid waterproof layer to block the seepage path of the concrete on both sides of the post-cast strip. The overlapping steel plate 12 is a dense metal plate, which can be welded to the steel bars of the steel reinforcement cage to form an integral framework and serves as a partition structure during concrete pouring. The overlapping steel plate 12 is retained as a permanent structure without the need for later chiseling and directly serves as the transition interface between the new and old concrete. The overlapping steel plate 12 replaces the traditional dense wire mesh, eliminates the need for removing the temporary partition, omits the chiseling process in the traditional process, and avoids the residue of aggregates. The integration of the water-stop steel plate 11 and the partition structure simplifies the construction process.

[0054] Further, please refer to Figure 1As shown in the figure, the side wall of the lapping steel plate 12 is provided with anti-pulling rib plates 2, and the anti-pulling rib plates 2 are fixed to the lapping steel plate 12 by welding. Since there is only an adhesive force between the concrete and the lapping steel plate 12 to resist the mutual tensile stress generated during concrete shrinkage, there is a great risk of interface detachment under the action of external water penetration and concrete shrinkage, and the seal failure further leads to the intrusion of seepage water. Therefore, anti-pulling rib plates 2 are added to the lapping steel plate 12 to generate shear resistance distributed at multiple points between the concrete and the lapping steel plate 12, reduce the occurrence of stress concentration, and significantly improve the anti-pulling strength of the bonding interface.

[0055] In one embodiment, please refer to Figure 3 As shown in the figure, the anti-pulling rib plate 2 is a rib plate connected between the water-stop steel plate 11 and the lapping steel plate 12, and a plurality of rib plates are arranged along the length direction of the integral water-stop plate 1. In addition to providing anti-pulling force, this arrangement structure also enhances the structural strength of the integral water-stop plate 1, and then enhances the overall compressive and bending moment strengths of the floor slab after being combined with the concrete.

[0056] Furthermore, please refer to Figure 4 As shown in the figure, the anti-pulling rib plate 2 has through holes penetrating the side wall. The penetrating through holes allow the concrete to penetrate into the holes during pouring and form a pin structure after hardening. The friction between the concrete and the anti-pulling rib plate 2 and the dowel effect act together to form mechanical anchoring, significantly enhancing the interface anti-pulling force.

[0057] In a specific embodiment, please refer to Figure 1 and Figure 2 As shown in the figure, the anti-pulling rib plate 2 includes a bottom plate and convex plates. A plurality of convex plates are continuously arranged along one side of the length direction of the welded bottom plate to form a wavy extension structure, and the other opposite side of the bottom plate is welded to the lapping steel plate 12. Through holes for the concrete to penetrate are formed between the convex plates and the bottom plate. This structure of the anti-pulling rib plate 2 is only fixedly connected to the lapping steel plate 12, so that there are no other auxiliary structures between the connection interface of the lapping steel plate 12 and the water-stop steel plate 11. While providing anti-pulling force for the lapping steel plate 12, it ensures that the lapping steel plate 12 can smoothly generate bending deformation under the action of prestress.

[0058] In one embodiment, please refer to Figure 5 As shown in the figure, the anti-pulling rib plates 2 are continuously arranged along the length direction of the lapping steel plate 12 to form a continuously and uniformly distributed anchoring section, increasing the concrete wrapping depth, so that the biting effect extends from the interface surface layer to the interior of the concrete. The continuous biting structure avoids the stress concentration problem of point anchoring and significantly improves the anti-pulling force. The anti-pulling rib plates 2 extend away from the water-stop steel plate 11, increasing the length of the seepage path at the interface. The upward extension direction forces the seepage water to bypass against gravity, forming a labyrinth water-blocking structure and prolonging the seepage time.

[0059] The overlapping steel plate 12 is provided with through holes for the steel bars to pass through. The through holes on the overlapping steel plate 12 allow the main steel bars of the steel cage to pass through directly, avoiding the steel bars from being cut off or bent at the overlapping steel plate 12, and ensuring the continuity of the steel bars in the structure. The through hole position matches the designed spacing of the steel cage, so that the steel bars maintain the original straight line arrangement, eliminating the problem of steel bar dislocation or interruption caused by partition components. The integral bearing structure formed by the water-stop integral plate 1 and the continuous steel mesh can evenly transfer the load and improve the structural integrity and seismic resistance.

[0060] The construction method also includes step S3, i.e. applying prestress to the lap steel plate 12 in the direction of the post-casting strip, and releasing the prestress after the concrete reaches the initial strength. Applying prestress to the lap steel plate 12 in the direction of the post-casting strip forces the lap steel plates 12 on both sides to produce a certain degree of lateral elastic deformation, which is equivalent to reserving a certain length of concrete shrinkage. The shrinkage rate of conventional concrete at 28 days is about 0.2mm / m~0.3mm / m, so the amount of excess concrete required to form deformation compensation for the lap steel plate 12 is extremely small. When the concrete hardens and shrinks, the pre-compression stress is gradually released to offset the tensile stress caused by the shrinkage, avoid interface debonding, and leave a certain compression effect after the shrinkage is basically completed to ensure that the interface is always tightly fitted.

[0061] In addition, if no prestress is applied, when the anti-pullout reinforcement plate 2 is used to enhance the interface bonding force between the lap joint steel plate 12 and the concrete, although the shrinkage of the concrete near the lap joint steel plate 12 is suppressed, the shrinkage of the concrete is a forced behavior of internal stress, and the shrinkage will still occur in other areas, resulting in possible crack development in other areas. After the prestress is applied, when the anti-pullout reinforcement plate 2 is set to enhance the interface bonding effect, the lap joint steel plate 12 will not constrain the concrete during the shrinkage period, and the internal stress of the concrete can be effectively released.

[0062] Although the expansion agent produces moderate expansion in the early stage of concrete hardening through chemical reaction, offsetting the tensile stress caused by drying shrinkage and temperature shrinkage, and can effectively reduce the occurrence of cracks, the amount of expansion agent added needs to be strictly controlled. Excessive addition will lead to excessive expansion and cause structural cracking; insufficient addition will not be able to compensate for shrinkage and is difficult to control in terms of technology, especially when concrete is developed under lateral constraints.

[0063] For further information, see Figure 1 , Figure 6 and Figure 7As shown, the prestress of the lapping steel plates 12 on both sides of the post-cast strip is tensioned toward the opposite direction by the steel bars welded to the lapping steel plates 12 on both sides, and is formed by fixing with the temporary fasteners 3 between the corresponding steel bars on both sides. By utilizing the symmetry of the structures on both sides of the post-cast strip and through the opposite tension of the welded steel bars, a self-balanced system of prestress is formed in the horizontal direction, eliminating the equipment and structural redundancy caused by unilateral independent tensioning. Since the required compensation deformation amount of the lapping steel plates 12 is not large, the structural influence on the steel reinforcement cage itself caused by using the steel bars in the steel reinforcement cage as the tension force transmission members is extremely small. In addition, since the prestress needs to be maintained for a long time before being released during the concrete setting stage, using the traditional jack system for tensioning not only has the problem of space tension, but is also not conducive to equipment maintenance.

[0064] The temporary fastener 3 is used as a standard part for quickly fixing the tensioning state. Specifically, the temporary fastener 3 includes two locking members 31 fixedly connected to the outer walls, and the two locking members 31 are respectively detachably connected to the corresponding steel bars. The two locking members 31 are fixedly connected to the outer walls to form a rigid whole, ensuring uniform stress transmission during the tensioning process. A clamping mechanism, such as a wedge-shaped clip or a bolt tightening, is provided inside the locking member 31, allowing the steel bar to be inserted and then locking the clamping mechanism through the locking member to achieve mechanical biting fixation, realizing quick locking or release of the prestress.

[0065] In one embodiment, please refer to Figure 6 As shown, the locking member 31 includes a claw through which the steel bar penetrates and a ferrule that can apply a radial acting force to the claw. The front end of the claw forms a plurality of slits in the circumferential direction and a claw portion that realizes radial deformation through the structural avoidance of the slits. After the steel bar penetrates the claw, the ferrule is sleeved on the periphery of the claw portion of the claw and the ferrule is tightened by bolts or buckles, forcing the claw portion to generate radial deformation and be in close contact and biting with the bolts.

[0066] In one embodiment, please refer to Figure 7 As shown, the locking member 31 includes two pressing plates hinged to each other, and a clamping groove for accommodating the steel bar is formed between the two pressing plates. After the steel bar is partially placed in the clamping groove, the two pressing plates are fitted together, and the two pressing plates are fastened by bolts or buckles, so that the steel bar is in close contact and biting with the clamping groove.

[0067] Please refer to Figure 1 and Figure 2 As shown, a cross-bracing assembly 4 is provided between the connecting roots on the opposite sides of the two integral waterstop plates 1, and the connecting roots are the connecting parts of the waterstop steel plates 11 and the lapping steel plates 12. The cross-bracing assembly 4 forms an opposite support at the connection of the two lapping steel plates 12 and the waterstop steel plates 11 respectively to balance the bending moment generated by the prestress.

[0068] The cross brace assembly 4 includes a brace plate and a telescopic rod. The brace plate is arranged along the length direction of a single connection root, and both ends of multiple telescopic rods respectively abut against two opposite brace plates. The brace plate can balance the multi-point local stress formed by the telescopic rods. The telescopic rod has the function of adjustable length, which is a prior art and its specific structure will not be elaborated in detail here. A groove for limiting the end of the telescopic rod is formed on the brace plate to avoid end slip during the support process.

[0069] It should be noted that the present invention is not limited to the above embodiments. The above embodiments are only examples, and embodiments having the same constitution and the same effect as the technical idea within the technical solution scope of the present invention are all included in the technical scope of the present invention. In addition, within the scope not departing from the gist of the present invention, various deformations that those skilled in the art can think of applied to the embodiments, and other ways constructed by combining some constituent elements in the embodiments are also included in the scope of the present invention.

Claims

1. A construction method for post-cast strip of concrete without chiseling, characterized in that, Including: S1. Arrange a water-stop integral plate (1) on both sides of the post-cast strip; S2. Weld and fix the water-stop integral plate (1) to the steel bars of the steel reinforcement cage; The water-stop integral plate (1) includes a water-stop steel plate (11) and two overlapping steel plates (12), and the two overlapping steel plates (12) are respectively arranged on the vertical two sides of the water-stop steel plate (11).

2. The post-cast strip construction method for concrete without chiseling hair according to claim 1, characterized in that, An anti-pulling rib plate (2) is arranged on the side wall of the overlapping steel plate (12).

3. The post-cast strip construction method for concrete without chiseling hair according to claim 2, characterized in that The anti-pulling rib plate (2) has through holes penetrating the side wall.

4. A post-cast strip construction method for concrete without chiseling according to claim 2, characterized in that, The anti-pulling rib plates (2) are continuously arranged along the length direction of the overlapping steel plate (12), and the anti-pulling rib plates (2) extend away from the water-stop steel plate (11).

5. A post-pouring belt construction method for concrete without chiseling hair according to claim 1, characterized in that, Through holes for the steel bars to penetrate are formed in the overlapping steel plate (12).

6. A construction method for a post-cast strip of concrete without chiseling, according to claim 1, characterized in that, It further includes step S3, and S3 specifically includes: applying prestress to the overlapping steel plate (12) in the direction of the post-cast strip, and releasing the prestress after the concrete reaches the initial strength.

7. A construction method for a post-cast strip of concrete without chiseling, according to claim 6, characterized in that, The prestress of the overlapping steel plates (12) on both sides of the post-cast strip is formed by tensioning the steel bars welded to the overlapping steel plates (12) on both sides in the opposite direction and using temporary fixtures (3) to fix between the corresponding steel bars on both sides.

8. A post-cast strip construction method for concrete without chiseling according to claim 7, characterized in that, The temporary fixture (3) includes two locking members (31) fixedly connected to the outer walls, and the two locking members (31) are respectively detachably connected to the corresponding steel bars.

9. A post-cast strip construction method for concrete without chiseling according to claim 7, characterized in that, A cross-bracing assembly (4) is arranged between the connecting roots of the opposite sides of the two water-stop integral plates (1).

10. A post-cast strip construction method for concrete without chiseling according to claim 6, characterized in that, The prestress is released after the concrete reaches 40% - 70% of the design strength.

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