Basement roof concrete post-cast strip structure

Abstract

The utility model discloses a basement roof concrete post-cast strip structure, and relates to the technical field of post-cast strips. The device comprises a lower precast slab, an arched precast slab and an upper precast slab, the arched precast slab is positioned between the lower precast slab and the upper precast slab; the lower prefabricated slab, the arched prefabricated slab and the upper prefabricated slab are all in lap joint between the two top plate bodies, the bottom face of the lower prefabricated slab is flush with the bottom faces of the top plate bodies, and the top face of the upper prefabricated slab is flush with the top faces of the top plate bodies. According to the post-cast strip structure, the lower prefabricated slab, the arched prefabricated slab and the upper prefabricated slab are arranged, the layered arched design is adopted, so that the strength of the post-cast strip structure is high, the first mortar waterproof layer, the second mortar waterproof layer and the top mortar waterproof layer are arranged, water permeation can be effectively prevented, the waterproof performance of the post-cast strip structure is remarkably improved, and the service life of the post-cast strip structure is prolonged. The problems that an existing post-cast strip structure is insufficient in structural strength and not ideal in waterproof performance are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of post-cast strips, in particular to a basement top slab concrete post-cast strip structure. Background Art

[0002] Concrete post-cast strips are concrete strips left at corresponding positions of foundation slabs, walls and beams in accordance with design or construction specifications to prevent harmful cracks that may occur in reinforced concrete structures due to uneven shrinkage or settlement during construction. It can temporarily divide the structure into several parts, and after a period of time after the internal shrinkage of the components, the concrete of the construction joints is poured to connect the structure into a whole.

[0003] The main functions of the post-cast strip are: solving settlement differences, reducing temperature shrinkage, and solving temperature stress; after the construction of the main structure is completed, most of the settlement is filled with concrete from the connecting parts to connect the high and low layers into a whole; it can effectively prevent harmful cracks in reinforced concrete structures and ensure the safety and stability of the structure.

[0004] After searching, the announcement number CN220266862U and the announcement date 2023-12-29 disclose a basement top slab concrete post-cast strip structure, which belongs to the field of building construction and is used for basement top slab construction. The top slab steel mesh is connected to the prefabricated cover plate overlapped on the groove part by pouring a connecting concrete layer; the prefabricated cover plate is composed of a prefabricated steel mesh with a galvanized casing cast at the center position, and a water stop wing ring is provided at the connection position between the galvanized casing and the prefabricated steel mesh; the side waterproof layer of the cover plate is laid at the position where the top surface of the prefabricated cover plate contacts the basement top slab, the side waterproof layer of the cover plate and the top surface of the prefabricated cover plate are covered with a cover plate top protective net, and the top surface of the cover plate top protective net and the top surface of the basement top slab are poured with a concrete leveling layer composed of concrete.

[0005] The patent has the following shortcomings:

[0006] 1. The structural strength of the post-cast strip structure is not ideal. Although a three-layer design of pouring and connecting concrete layer, prefabricated cover plate and concrete leveling layer is adopted, the bearing capacity of each layer has not been significantly improved;

[0007] 2. The waterproof performance of the post-cast strip structure is not ideal. The sealing between the layers of poured and connected concrete layers, prefabricated cover plates and concrete leveling layers is not enough, and the sealing effect between each layer and the top plate is also poor, which is prone to leakage.

[0008] To this end, we provide a basement top slab concrete post-cast strip structure to solve the above-mentioned problems. Utility Model Content

[0009] The utility model aims to provide a basement top slab concrete post-cast strip structure. By arranging a lower precast plate, an arched precast plate and an upper precast plate, a layered arched design is adopted to make the strength of the post-cast strip structure higher. By arranging a first mortar waterproof layer, a second mortar waterproof layer and a top mortar waterproof layer, water penetration can be effectively prevented, and the waterproof performance of the post-cast strip structure is significantly improved, thereby solving the problems of insufficient structural strength and unsatisfactory waterproof performance of the existing post-cast strip structure.

[0010] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0011] The utility model is a post-cast strip structure of a basement top slab concrete, comprising a lower precast plate, an arched precast plate and an upper precast plate; the arched precast plate is located between the lower precast plate and the upper precast plate; the lower precast plate, the arched precast plate and the upper precast plate are all overlapped between two top plate bodies, and the bottom surface of the lower precast plate is flush with the bottom surface of the top plate body, and the top surface of the upper precast plate is flush with the top surface of the top plate body; rubber waterstops are arranged between the side surfaces of the lower precast plate, the arched precast plate and the upper precast plate and the top plate body; a first mortar waterproof layer is arranged between the lower precast plate and the arched precast plate, and a second mortar waterproof layer is arranged between the arched precast plate and the upper precast plate; top mortar waterproof layers are arranged on both sides of the upper precast plate.

[0012] The utility model is further configured as follows: first overlapping portions are provided on both sides of the lower prefabricated plate, a first arched portion is provided on the top surface of the lower prefabricated plate, and a bottom surface is configured as a plane; a plurality of first circular holes evenly distributed in a lattice shape are provided on the surface of the first arched portion; and a plurality of first prestressed tendons evenly distributed at intervals are provided inside the lower prefabricated plate.

[0013] The utility model is further configured such that second overlapping portions are provided on both sides of the arched prefabricated plate, a plurality of second circular holes evenly distributed in a lattice shape are provided on the top surface of the arched prefabricated plate, and a plurality of second prestressed tendons evenly distributed in a lattice shape are provided inside the arched prefabricated plate.

[0014] The utility model is further configured such that third overlapping portions are provided on both sides of the upper prefabricated plate, a second arched portion is provided on the bottom surface of the upper prefabricated plate, and a top surface is configured as a plane; a plurality of third prestressed tendons distributed at equal intervals are provided inside the upper prefabricated plate.

[0015] The utility model is further configured that a stepped overlapping portion for overlapping is provided at the edge of the top plate body; and a plurality of equally spaced grooves for placing prestressed tendons are provided on each horizontal surface of the stepped overlapping portion.

[0016] The utility model is further configured such that the first mortar waterproof layer is formed by a steel mesh and poured waterproof mortar; the bottom of the first mortar waterproof layer is filled into the first circular hole to form a plurality of convex bodies evenly distributed in a lattice shape; and convex strips are formed on both sides of the bottom of the first mortar waterproof layer to fill into the cavity above the rubber waterstop.

[0017] The utility model is further configured such that the structure of the second mortar waterproof layer is the same as the structure of the first mortar waterproof layer.

[0018] The utility model is further configured such that the cross-sectional shape of the top mortar waterproof layer is set to be T-shaped; one side thereof overlaps the overlapping groove at the edge of the upper prefabricated plate, the other side overlaps the stepped overlapping portion of the top plate body, and the bottom is connected to the rubber waterstop.

[0019] The utility model has the following beneficial effects:

[0020] 1. The utility model provides a lower prefabricated plate, an arched prefabricated plate and an upper prefabricated plate, so that the strength of the post-cast strip structure is relatively high. The layered design can ensure the construction quality of each layer, better distribute and transfer the load, and improve the overall performance of the structure. The arched structure can effectively improve the bearing capacity of the post-cast strip, and can disperse the load to a larger area, thereby reducing the stress per unit area.

[0021] 2. The utility model can effectively prevent water penetration by arranging the first mortar waterproof layer, the second mortar waterproof layer and the top mortar waterproof layer, and significantly improve the waterproof performance of the post-cast strip structure. At the same time, the first circular hole and the second circular hole are arranged, so that the mortar waterproof layer and the prefabricated board layer can be connected more closely. By filling mortar, the structural connection becomes stronger, thereby improving the overall strength of the post-cast strip. By arranging a rubber waterstop, the elasticity and sealing performance of the rubber are utilized to provide a good waterproof effect, and the sealing performance of the post-cast strip is improved, effectively preventing problems caused by leakage of the basement top plate.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are 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 creative work.

[0024] Figure 1 The figure is a schematic diagram of the overall structural assembly of a basement top slab concrete post-cast strip structure.

[0025] Figure 2 It is a front cross-sectional view of the overall structure of a basement top slab concrete post-cast strip structure.

[0026] Figure 3 Schematic diagram of the explosion of the lower precast slab, arched precast slab, upper precast slab, first mortar waterproof layer and second mortar waterproof layer of a basement top slab concrete post-cast strip structure Figure 1 .

[0027] Figure 4 Schematic diagram of the explosion of the lower precast slab, arched precast slab, upper precast slab, first mortar waterproof layer and second mortar waterproof layer of a basement top slab concrete post-cast strip structure Figure 2 .

[0028] Figure 5 The present invention is a structural schematic diagram of a basement top slab concrete post-cast strip structure.

[0029] Figure 6 The present invention is a schematic diagram of the first mortar waterproof layer structure of a basement top slab concrete post-cast strip structure.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1-lower precast plate, 101-first overlapping part, 102-first arched part, 103-first circular hole, 104-first prestressed tendon, 2-arched precast plate, 201-second overlapping part, 202-second circular hole, 203-second prestressed tendon, 3-upper precast plate, 301-third overlapping part, 302-second arched part, 303-third prestressed tendon, 304-lap groove, 4-top plate body, 401-step overlapping part, 402-groove, 5-first mortar waterproof layer, 501-steel mesh, 502-convex body, 503-convex strip, 6-second mortar waterproof layer, 7-rubber waterstop, 8-top mortar waterproof layer. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment 1

[0034] See also Figure 1-5The utility model is a post-cast strip structure of a basement top slab concrete, comprising a lower precast slab 1, an arched precast slab 2 and an upper precast slab 3; the arched precast slab 2 is located between the lower precast slab 1 and the upper precast slab 3; the lower precast slab 1, the arched precast slab 2 and the upper precast slab 3 are all overlapped between two top slab bodies 4, and the bottom surface of the lower precast slab 1 is flush with the bottom surface of the top slab body 4, and the top surface of the upper precast slab 3 is flush with the top surface of the top slab body 4; rubber waterstops 7 are provided between the side surfaces of the lower precast slab 1, the arched precast slab 2 and the upper precast slab 3 and the top slab body 4.

[0035] Specifically, first overlapping portions 101 are provided on both sides of the lower precast plate 1, a first arched portion 102 is provided on the top surface of the lower precast plate 1, and the bottom surface is provided as a plane; a plurality of first circular holes 103 evenly distributed in a lattice shape are provided on the surface of the first arched portion 102; a plurality of first prestressed tendons 104 evenly distributed in intervals are provided inside the lower precast plate 1.

[0036] Specifically, second overlap portions 201 are provided on both sides of the arched precast panel 2, a plurality of second circular holes 202 evenly distributed in a lattice are provided on the top surface of the arched precast panel 2, and a plurality of second prestressed tendons 203 evenly distributed inside the arched precast panel 2 are provided.

[0037] Specifically, third overlapping portions 301 are provided on both sides of the upper precast plate 3, a second arched portion 302 is provided on the bottom surface of the upper precast plate 3, and a top surface is provided as a plane; a plurality of third prestressed tendons 303 distributed at equal intervals are provided inside the upper precast plate 3.

[0038] Furthermore, a stepped overlapping portion 401 for overlapping is provided at the edge of the top plate body 4; and a plurality of equally spaced grooves 402 for placing prestressed tendons are provided on each horizontal surface of the stepped overlapping portion 401 .

[0039] The operation process of this embodiment is as follows: fix the rubber water stop 7 on both sides of the lower precast plate 1, and overlap the lower precast plate 1 between the two top plate bodies 4, and at the same time make the first prestressed tendon 104 stuck in the groove 402, and then cast the first mortar waterproof layer 5; fix the rubber water stop 7 on both sides of the arched precast plate 2, and place the arched precast plate 2 on the top of the first mortar waterproof layer 5, and overlap between the two top plate bodies 4, and at the same time make the second prestressed tendon 203 stuck in the groove 402, and then cast the second mortar waterproof layer 6; fix the rubber water stop 7 on both sides of the arched precast plate 2, and place the arched precast plate 2 on the top of the first mortar waterproof layer 5, and overlap between the two top plate bodies 4, and at the same time make the second prestressed tendon 203 stuck in the groove 402, and then cast the second mortar waterproof layer 6; The waterstop 7 is fixed on both sides of the upper precast panel 3, and the upper precast panel 3 is placed on the top of the second mortar waterproof layer 6 and overlapped between the two top plate bodies 4. At the same time, the third prestressed tendons 303 are inserted into the grooves 402, and finally the top mortar waterproof layers 8 on both sides are poured. The layered design can ensure the construction quality of each layer, better distribute and transfer the load, and improve the overall performance of the structure. The arch structure can effectively improve the bearing capacity of the post-cast strip, and can disperse the load to a larger area, thereby reducing the stress per unit area. Specific embodiment 2

[0041] See also Figure 2 , 4 , 6. On the basis of specific embodiment 1 and specific embodiment 2, a first mortar waterproof layer 5 is arranged between the lower prefabricated panel 1 and the arched prefabricated panel 2, and a second mortar waterproof layer 6 is arranged between the arched prefabricated panel 2 and the upper prefabricated panel 3; top mortar waterproof layers 8 are arranged on both sides of the upper prefabricated panel 3.

[0042] Specifically, the first mortar waterproof layer 5 is formed by a steel mesh 501 and poured waterproof mortar; the bottom of the first mortar waterproof layer 5 is filled into the first circular hole 103 to form a plurality of convex bodies 502 evenly distributed in a lattice shape; the bottom sides of the first mortar waterproof layer 5 are filled into the cavity above the rubber waterstop 7 to form convex strips 503; the structure of the second mortar waterproof layer 6 is the same as that of the first mortar waterproof layer 5.

[0043] Furthermore, the cross-sectional shape of the top mortar waterproof layer 8 is set to be T-shaped; one side thereof overlaps the overlapping groove 304 at the edge of the upper precast plate 3, and the other side overlaps the stepped overlapping portion 401 of the top plate body 4, and the bottom is connected to the rubber waterstop 7.

[0044] The operation process of this embodiment is as follows: when pouring the first mortar waterproof layer 5, the steel mesh 501 is placed on the top of the lower precast plate 1, and the waterproof mortar is poured to form the first mortar waterproof layer 5. When pouring the second mortar waterproof layer 6, the steel mesh 501 is placed on the top of the arched precast plate 2, and the waterproof mortar is poured to form the second mortar waterproof layer 6. The mortar waterproof layer can effectively prevent water penetration and significantly improve the waterproof performance of the post-cast strip structure. At the same time, the first circular hole 103 and the second circular hole 202 are set so that the mortar waterproof layer and the precast plate layer can be connected more closely. By filling the mortar, the structural connection becomes stronger, thereby improving the overall strength of the post-cast strip. The rubber waterstop 7 uses the elasticity and sealing performance of the rubber to provide a good waterproof effect and improve the sealing performance of the post-cast strip, effectively preventing problems caused by leakage of the basement roof.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A basement top slab concrete post-cast strip structure, comprising a lower precast slab (1), an arched precast slab (2) and an upper precast slab (3); characterized in that: The arched prefabricated plate (2) is located between the lower prefabricated plate (1) and the upper prefabricated plate (3); The lower prefabricated plate (1), the arched prefabricated plate (2) and the upper prefabricated plate (3) are all overlapped between the two top plate bodies (4), and the bottom surface of the lower prefabricated plate (1) is flush with the bottom surface of the top plate body (4), and the top surface of the upper prefabricated plate (3) is flush with the top surface of the top plate body (4); A rubber water stop strip (7) is provided between the side surfaces of the lower prefabricated plate (1), the arched prefabricated plate (2) and the upper prefabricated plate (3) and the top plate body (4); A first mortar waterproof layer (5) is provided between the lower prefabricated plate (1) and the arched prefabricated plate (2), and a second mortar waterproof layer (6) is provided between the arched prefabricated plate (2) and the upper prefabricated plate (3); Top mortar waterproof layers (8) are provided on both sides of the upper prefabricated plate (3).

2. A basement top slab concrete post-cast strip structure according to claim 1, characterized in that: Both sides of the lower prefabricated plate (1) are provided with first overlapping portions (101), the top surface of the lower prefabricated plate (1) is provided with a first arched portion (102), and the bottom surface is provided as a plane; A plurality of first circular holes (103) evenly distributed in a lattice pattern are provided on the surface of the first arched portion (102); A plurality of first prestressed tendons (104) distributed at equal intervals are arranged inside the lower prefabricated plate (1).

3. The basement top slab concrete post-cast strip structure according to claim 1, characterized in that: Second overlapping portions (201) are provided on both sides of the arched prefabricated plate (2), and a plurality of second circular holes (202) evenly distributed in a lattice are provided on the top surface of the arched prefabricated plate (2); A plurality of second prestressed tendons (203) distributed at equal intervals are arranged inside the arched prefabricated panel (2).

4. The basement top slab concrete post-cast strip structure according to claim 1, characterized in that: The upper prefabricated plate (3) is provided with a third overlapping portion (301) on both sides, the bottom surface of the upper prefabricated plate (3) is provided with a second arched portion (302), and the top surface is provided as a plane; A plurality of third prestressed tendons (303) distributed at equal intervals are arranged inside the upper prefabricated plate (3).

5. A basement top slab concrete post-cast strip structure according to any one of claims 2 to 4, characterized in that: A stepped overlapping portion (401) for overlapping is provided at the edge of the top plate body (4); A plurality of equally spaced grooves (402) for placing prestressed tendons are provided on each horizontal surface of the stepped overlap portion (401).

6. A basement top slab concrete post-cast strip structure according to claim 5, characterized in that: The first mortar waterproof layer (5) is formed by a steel mesh (501) and pouring waterproof mortar; The bottom of the first mortar waterproof layer (5) is filled into the first circular hole (103) to form a plurality of convex bodies (502) evenly distributed in a lattice shape; Both sides of the bottom of the first mortar waterproof layer (5) are filled into the cavity above the rubber water stop strip (7) to form convex strips (503).

7. A basement top slab concrete post-cast strip structure according to claim 6, characterized in that: The structure of the second mortar waterproof layer (6) is the same as that of the first mortar waterproof layer (5).

8. The basement top slab concrete post-cast strip structure according to claim 1, characterized in that: The cross-sectional shape of the top mortar waterproof layer (8) is set to be T-shaped; One side thereof is overlapped on the overlap groove (304) at the edge of the upper prefabricated plate (3), and the other side is overlapped on the stepped overlap portion (401) of the top plate body (4), and the bottom is connected to the rubber water stop (7).

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