Post-cast anti-seepage and anti-crack concrete structure

Abstract

The utility model discloses a kind of anti-seepage and crack-resistant concrete structures of post-cast strip, belong to post-cast strip construction technical field. Including the lower part fast and easy closing net of symmetrical setting in post-cast strip area, the lower part fast and easy closing net is set in the edge of post-cast strip area, the upper side of the lower part fast and easy closing net and the upper side of the lower part fast and easy closing net are respectively welded on the lower side and the upper side of the upper part fast and easy closing net on the two sides of the water stop plate, the two sides of the upper part fast and easy closing net and the lower part fast and easy closing net are each equipped with support reinforcement, the support reinforcement is used to limit the vertical position of the upper part fast and easy closing net and the lower part fast and easy closing net, the upper side of the upper part fast and easy closing net and the lower part fast and easy closing net is each equipped with a plurality of stud. The technical scheme is used to improve the bonding capacity of cast-in-place concrete and post-cast concrete in post-cast strip construction process, improve the construction effect of post-cast strip.

Description

Technical Field

[0001] This utility model belongs to the field of post-pouring strip construction technology, specifically relating to a post-pouring strip anti-seepage and crack-resistant concrete structure. Background Technology

[0002] A post-cast strip is a temporary construction joint of a certain width reserved in the structure during the construction process of a concrete structure. After the main structure concrete is poured and reaches a certain strength or settlement stability, this part is then sealed with micro-expansion concrete or other special concrete to form an integral structure.

[0003] Although the post-pouring strip anti-seepage structure disclosed in application number 2021202069295 provides a construction structure for the post-pouring strip, after its construction, the post-pouring concrete and the cast-in-place concrete are in contact through a groove. This method is not only difficult to construct (it requires chiseling the cast-in-place concrete, resulting in a large amount of construction work) and complicated construction steps, but also leads to limited bonding strength between the cast-in-place concrete and the post-pouring concrete, resulting in poor construction effect of the post-pouring strip. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a post-pouring strip anti-seepage and crack-resistant concrete structure to improve the bonding ability between cast-in-place concrete and post-pouring concrete during the construction of the post-pouring strip, thereby improving the construction effect of the post-pouring strip.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A post-cast strip seepage-proof and crack-resistant concrete structure is used for construction of the post-cast strip area. It includes a lower quick-closing mesh symmetrically arranged within the post-cast strip area, positioned at the edge of the area. An upper quick-closing mesh is provided above each of the lower meshes. A waterstop plate is installed between the upper and lower meshes, with its two sides welded to the lower and upper sides of the upper and lower meshes, respectively. The lower quick-closing mesh has supporting steel bars on both sides to define the vertical position of the upper and lower quick-closing mesh. Several studs are provided on both sides of the upper and lower quick-closing mesh, with one end of each stud fixed to the upper and lower quick-closing mesh. The mesh also includes a wire mesh and post-cast concrete. The wire mesh is positioned above the post-cast strip area, and the post-cast concrete is poured into the post-cast strip area, completely filling it.

[0007] Furthermore, both sides of the waterstop plate are provided with bending portions.

[0008] Furthermore, the middle part of the post-cast strip area is provided with vertical reinforcing bars, and several horizontal reinforcing bars are provided on the vertical reinforcing bars. The horizontal reinforcing bars are welded to the vertical reinforcing bars, and the two ends of the horizontal reinforcing bars respectively abut against the sides of the lower quick-closing mesh and the upper quick-closing mesh symmetrically arranged on both sides.

[0009] Furthermore, clamping bars are provided on both sides of the vertical reinforcing bar, and the clamping bars are welded and fixed to the vertical reinforcing bar.

[0010] Furthermore, a supporting steel plate is provided at the upper end of the vertical reinforcing bar, and the supporting steel plate is welded to the vertical reinforcing bar to support the middle part of the wire mesh.

[0011] Furthermore, each of the symmetrically arranged studs is provided with several upper tie rods and lower support rods. One end of the upper tie rod is fixed to the stud on the upper quick-closing net, and the other end is fixed to the upper surface of the waterstop plate. One end of the lower support rod is fixed to the stud on the lower quick-closing net, and the other end is fixed to the lower surface of the waterstop plate.

[0012] The beneficial effects of this utility model are as follows:

[0013] In this technical solution, the upper and lower quick-closing mesh enhances the bonding strength between the cast-in-place and post-cast concrete surfaces. Simultaneously, the studs further strengthen the tensile strength of the bond between the cast-in-place and post-cast concrete. The waterstop (waterstop steel plate) prevents water seepage at the interface between the cast-in-place and post-cast concrete, avoiding water penetration along the joint. Furthermore, the wire mesh prevents cracking of the post-cast concrete later on. Therefore, this technical solution achieves impermeability and crack resistance in the post-cast strip, improving its construction effectiveness.

[0014] Other advantages, objectives, and features of this invention will be set forth in the following description and will be apparent to those skilled in the art to some extent, or may be learned by practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0015] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0016] Figure 1 This is a three-dimensional schematic diagram of the post-pouring strip construction structure of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the post-pouring strip construction structure of this utility model;

[0018] Figure 3 This is a schematic diagram showing the arrangement of the upper tie rod and the lower support rod of this utility model.

[0019] The following labels are shown in the attached diagram:

[0020] 1. Pre-cast concrete foundation; 2. Lower quick-closing mesh; 3. Studs; 4. First supporting reinforcement; 5. Waterstop plate; 6. Vertical reinforcement; 7. Horizontal reinforcement; 8. Clamping reinforcement; 9. Wire mesh; 10. Supporting steel plate; 11. Upper tie rod; 12. Lower support rod; 13. Upper quick-closing mesh; 14. Second supporting reinforcement; 15. Bending section; 16. Cast-in-place concrete; 17. Post-cast concrete. Detailed Implementation

[0021] like Figures 1-3 As shown, a post-cast strip anti-seepage and crack-resistant concrete structure is used for construction of the post-cast strip area. It includes a lower quick-closing mesh 2 (existing technology, with several fish-scale-like protrusions on its surface) symmetrically arranged within the post-cast strip area. The lower quick-closing mesh 2 is located at the edge of the post-cast strip area. An upper quick-closing mesh 13 is provided above each lower quick-closing mesh 2. A waterstop plate 5 is provided between the upper quick-closing mesh 13 and the lower quick-closing mesh 2. The two sides of the waterstop plate 5 are welded to the lower side of the upper quick-closing mesh 13 and the upper side of the lower quick-closing mesh 2, respectively. The upper quick-closing mesh 13 and the lower quick-closing mesh 2 have... All are equipped with supporting steel bars, including a first supporting steel bar 4 set on one side of the cast-in-place concrete 16 and a second supporting steel bar 14 set in the post-cast strip. The supporting steel bars are used to limit the vertical position of the upper quick-closing mesh 13 and the lower quick-closing mesh 2. Several studs 3 are provided on both sides of the upper quick-closing mesh 13 and the lower quick-closing mesh 2. One end of the studs 3 is fixed to the upper quick-closing mesh 13 and the lower quick-closing mesh 2 respectively. It also includes a wire mesh 9 and post-cast concrete 17. The wire mesh 9 is set at the upper part of the post-cast strip area. The post-cast concrete 17 is poured into the post-cast strip area and completely fills the post-cast strip area.

[0022] The installation of the upper quick-closing mesh 13 and the lower quick-closing mesh 2 enhances the wall bonding ability between the cast-in-place concrete 16 and the post-cast concrete 17. Simultaneously, the installation of the studs 3 further enhances the tensile strength of the bond between the cast-in-place concrete 16 and the post-cast concrete 17. The installation of the waterstop 5 (waterstop steel plate) blocks water seepage at the interface between the cast-in-place concrete 16 and the post-cast concrete 17, preventing water from seeping downwards along the joint. Furthermore, the installation of the wire mesh 9 prevents cracking of the post-cast concrete 17 later on. Therefore, this technical solution achieves impermeability and crack resistance in the post-cast strip, improving the construction effect of the post-cast strip. It is easy to understand that both the cast-in-place concrete 16 and the post-cast concrete 17 are constructed on the pre-cast concrete foundation 1, and the pre-cast concrete foundation 1 should be equipped with waterproof membranes and other components, which is existing technology and will not be elaborated upon here. It is not difficult to understand that there should be components such as a steel cage on the top of the pre-cast concrete foundation 1. The upper quick-closing mesh 13, the lower quick-closing mesh 2 and the supporting steel bars can be welded to the foundation construction components such as the steel cage for fixation. This will not be elaborated on further here.

[0023] In one feasible method, the waterstop 5 is provided with bending portions 15 on both sides. The bending portions 15 can be firmly hooked into the concrete to prevent the concrete from moving due to thermal expansion and contraction, which would cause gaps between the waterstop 5 and the concrete and lead to water seepage. Of course, the layout direction of the waterstop 5 can be selected according to the actual situation.

[0024] In one feasible method, a vertical reinforcing bar 6 is provided in the middle of the post-cast strip area, and several horizontal reinforcing bars 7 are provided on the vertical reinforcing bar 6. The horizontal reinforcing bars 7 are welded to the vertical reinforcing bar 6, and the two ends of the horizontal reinforcing bars 7 respectively abut against the sides of the lower quick-closing mesh 2 and the upper quick-closing mesh 13 symmetrically arranged on both sides, so as to provide horizontal support for the lower quick-closing mesh 2 and the upper quick-closing mesh 13. The use of the horizontal reinforcing bars 7 in conjunction with the supporting reinforcing bars can avoid the problem of lateral compression deformation of the cast-in-place concrete.

[0025] In one feasible method, clamping bars 8 are provided on both sides of the vertical reinforcing bar 6. The clamping bars 8 are welded and fixed to the vertical reinforcing bar 6 to enhance the supporting force of the vertical reinforcing bar 6. The vertical reinforcing bar 6 can be fixed to the reinforcing cage (composed of several staggered reinforcing bars, a common method in foundation construction).

[0026] In one feasible method, a support steel plate 10 is provided at the upper end of the vertical reinforcing bar 6. The support steel plate 10 is welded to the vertical reinforcing bar 6 to support the middle part of the wire mesh 9, so as to avoid the wire mesh 9 being deformed by the weight of the poured concrete, resulting in a bent distribution and a poor crack resistance.

[0027] In one feasible embodiment, each of the symmetrically arranged studs 3 is provided with a number of upper tie rods 11 and lower support rods 12. One end of the upper tie rod 11 is fixed to the stud 3 provided on the upper quick-closing mesh 13, and the other end is fixed to the upper surface of the waterstop plate 5. One end of the lower support rod 12 is fixed to the stud 3 provided on the lower quick-closing mesh 2, and the other end is fixed to the lower surface of the waterstop plate 5.

[0028] It is easy to understand that the upper tie rod 11 applies a tensile force to the waterstop plate 5, and the lower support rod 12 applies a supporting force to the waterstop plate 5, thereby avoiding the problem that the waterstop plate 5 will deform under the gravity of the concrete pouring, which would affect its water-stopping effect.

[0029] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A post-cast strip anti-seepage and crack-resistant concrete structure, used for construction of the post-cast strip area, characterized in that: The system includes a lower quick-closing mesh symmetrically arranged within the post-pouring strip area, positioned at the edge of the post-pouring strip area. An upper quick-closing mesh is positioned above each of the lower quick-closing meshes. A waterstop plate is provided between the upper and lower quick-closing meshes, with its two sides welded to the lower and upper sides of the upper and lower quick-closing meshes, respectively. Supporting steel bars are provided on both sides of both the upper and lower quick-closing meshes to define their vertical positions. Several studs are provided on both sides of both the upper and lower quick-closing meshes, with one end of each stud fixed to one of the upper or lower quick-closing meshes. The system also includes a wire mesh and post-pouring concrete. The wire mesh is positioned above the post-pouring strip area, and the post-pouring concrete is poured into the post-pouring strip area, completely filling it.

2. The post-cast strip anti-seepage and crack-resistant concrete structure according to claim 1, characterized in that: The waterstop plate has bends on both sides.

3. The post-cast strip anti-seepage and crack-resistant concrete structure according to claim 1, characterized in that: The post-cast strip area is provided with vertical reinforcing bars in the middle, and several horizontal reinforcing bars are provided on the vertical reinforcing bars. The horizontal reinforcing bars are welded to the vertical reinforcing bars, and the two ends of the horizontal reinforcing bars respectively abut against the sides of the lower quick-closing mesh and the upper quick-closing mesh symmetrically arranged on both sides.

4. The post-cast strip seepage-proof and crack-resistant concrete structure according to claim 3, characterized in that: The vertical reinforcing bars are provided with clamping reinforcing bars on both sides, and the clamping reinforcing bars are welded and fixed to the vertical reinforcing bars.

5. The post-cast strip anti-seepage and crack-resistant concrete structure according to claim 3, characterized in that: The upper end of the vertical reinforcing bar is provided with a supporting steel plate, which is welded to the vertical reinforcing bar to support the middle part of the wire mesh.

6. The post-cast strip anti-seepage and crack-resistant concrete structure according to claim 1, characterized in that: Each of the symmetrically arranged studs is equipped with several upper tie rods and lower support rods. One end of the upper tie rod is fixed to the stud on the upper quick-closing net, and the other end is fixed to the upper surface of the waterstop plate. One end of the lower support rod is fixed to the stud on the lower quick-closing net, and the other end is fixed to the lower surface of the waterstop plate.

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