Prefabricated underground retaining wall structure

Abstract

The utility model relates to the technical field of retaining walls, specifically a prefabricated underground retaining wall structure, comprising: a prefabricated wall panel, wherein two prefabricated wall panels are provided and are parallel to each other, a gap is reserved between the two prefabricated wall panels to form a casting cavity, a reinforcing bar structure is provided in the casting cavity, the reinforcing bar structure comprises a plurality of first reinforcing bars distributed in a plum blossom shape; a locking buckle is buckled at the mutual connection between the horizontal reinforcement and the vertical reinforcement; the beneficial effects are: by prefabricating two prefabricated wall panels that are parallel to each other and a gap is reserved between the two prefabricated wall panels, and concrete is continuously poured in the gap, it can be ensured that the wall is seamless and has no holes, and the functional requirements of the underground retaining wall are met; the prefabricated wall panels are prefabricated in a factory, and only hoisting is required on site, and the construction speed is high; the two prefabricated wall panels are tightened and positioned by the first reinforcing bars, and the self-strength is high, which can effectively avoid the possibility of expansion and deformation during concrete pouring, thereby ensuring the construction quality and construction efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of retaining walls, in particular to a prefabricated underground retaining wall structure. Background Art

[0002] The basement exterior wall, as a type of retaining wall, is the enclosing structure of the building's basement, used to isolate the basement from the surrounding environment. The basement retaining wall is mainly used to withstand the soil pressure on the ground and has certain waterproof properties. It generally adopts concrete structure and has certain seismic resistance.

[0003] In the prior art, the basement retaining wall adopts the traditional cast-in-place construction. After the steel bars are tied and fixed, they are supported by formwork and then poured with concrete to form. The formed retaining wall can enhance the integrity and earthquake resistance of the building.

[0004] However, at present, due to the small space of the basement, a large amount of work in the construction process needs to be done manually, the construction speed is slow, the labor material cost is high, and it is easy to affect the construction quality and efficiency of the entire building. Therefore, the utility model proposes a prefabricated underground retaining wall structure to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a prefabricated underground retaining wall structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a prefabricated underground retaining wall structure, comprising:

[0007] Prefabricated wall panels, wherein two prefabricated wall panels are provided and are parallel to each other, a gap is left between the two prefabricated wall panels to form a casting cavity, a tie rod structure is provided in the casting cavity, the tie rod structure comprises a plurality of first tie rods distributed in a plum blossom shape, two ends of the first tie rods are respectively located in the inner cavities of the two prefabricated wall panels, both ends of the first tie rods are bent 135 degrees to form locking buckles, and the two locking buckles are staggered 90 degrees with each other in the axial direction around the middle of the first tie rod;

[0008] The prefabricated wall panel is provided with horizontal bars and vertical bars which are perpendicular to each other. There are multiple horizontal bars and vertical bars, forming a "well"-shaped structure. The locking buckles are buckled at the connection between the horizontal bars and the vertical bars.

[0009] Preferably, the tie rod structure includes a plurality of second tie rods distributed in a plum blossom shape, the angle between the second tie rods and the horizontal direction is thirty degrees, and both ends of the second tie rods are respectively embedded in two prefabricated wall panels.

[0010] Preferably, the two locking buckles are located in the same plane, and the two locking buckles are perpendicular to each other.

[0011] Preferably, the upper ends of the vertical steel bars inside the two prefabricated wall panels are interconnected to form an inverted "U"-shaped structure, and the lower half of the prefabricated wall panels is provided with additional steel bars, which are vertically arranged and tied and fixed with the horizontal bars.

[0012] Preferably, the prefabricated wall panels are placed on the upper surface of the mounting base from top to bottom, and two groups of symmetrically distributed connecting steel bars are arranged inside the mounting base. The connecting steel bars are in an "L" shape, and the upper ends of the connecting steel bars extend from bottom to top into the inner cavity of the casting cavity.

[0013] Preferably, a water-stop steel plate is provided at the joint between the installation base and the prefabricated wall panel, the upper half of the water-stop steel plate is located in the casting cavity, and the lower half is located in the installation base.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model prefabricates two mutually parallel prefabricated wall panels with a gap between the two prefabricated wall panels, and continuously pours concrete in the gap, which can ensure that the wall is seamless and has no holes, and meet the functional requirements of the underground retaining wall. The prefabricated wall panels are prefabricated in the factory and only need to be hoisted on site, with high construction speed and lower labor and material costs. The two prefabricated wall panels are tightened and positioned by the first tensioning rod, and have high self-strength, which can effectively avoid the possibility of expansion and deformation during concrete pouring, thereby ensuring construction quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic cross-sectional view of the overall structure of the utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the overall structure of the second embodiment of the utility model;

[0018] Figure 3 It is a three-dimensional schematic diagram of the local structure of the utility model;

[0019] Figure 4 For this utility model Figure 1 A schematic diagram of the structure enlargement in the middle;

[0020] Figure 5 This is a three-dimensional schematic diagram of the first reinforcing bar structure of the utility model;

[0021] Figure 6 It is a three-dimensional schematic diagram of the first tie rod structure in the third embodiment of the utility model.

[0022] In the figure: 1. Prefabricated wall panel; 2. Horizontal reinforcement; 3. Vertical reinforcement; 4. First tension reinforcement; 41. Locking buckle; 5. Second tension reinforcement; 6. Installation base; 7. Connecting reinforcement; 8. Additional reinforcement; 9. Waterstop steel plate; 10. Casting cavity. DETAILED DESCRIPTION

[0023] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0027] See also Figures 1 to 6 , the utility model provides a technical solution:

[0028] Embodiment 1, a prefabricated underground retaining wall structure, includes: a prefabricated wall panel 1.

[0029] Specifically, two prefabricated wall panels 1 are provided and are parallel to each other, and a gap is left between the two prefabricated wall panels 1 to form a casting cavity 10, such as Figure 1 and Figure 3 As shown, the casting cavity 10 can be used for casting and molding concrete. The outer leaf thickness of the prefabricated wall panel 1 is 80mm, the inner leaf thickness is 50mm, the width of the casting cavity 10 is 200mm, and a tie rod structure is arranged in the casting cavity 10 for tightening and fixing the two prefabricated wall panels 1 to prevent the prefabricated wall panels 1 from being deformed and damaged due to the squeezing force of the concrete when the inner cavity of the casting cavity 10 is cast and molded. Secondly, the tie rod structure includes a plurality of first tie rods 4 distributed in a plum blossom shape, which are used to ensure that each position on the two prefabricated wall panels 1 can be uniformly stressed. The two ends of the first tie rod 4 are respectively located in the inner cavity of the two prefabricated wall panels 1. The two ends of the first tie rod 4 are bent 135 degrees to form a locking buckle 41. The two locking buckles 41 are staggered 90 degrees around the axial direction of the middle part of the first tie rod 4. Figure 5 As shown, the two locking buckles 41 have different bending directions, and when viewed along the length direction of the first tie rod 4, the two locking buckles 41 form a ninety-degree angle;

[0030] Furthermore, horizontal ribs 2 and vertical reinforcements 3 are arranged inside the prefabricated wall panel 1 and are perpendicular to each other. A plurality of horizontal ribs 2 and vertical reinforcements 3 are arranged to form a "well"-shaped structure. The arrangement of the horizontal ribs 2 and vertical reinforcements 3 is used to reinforce the structural strength of the prefabricated wall panel 1 itself. The locking buckle 41 is buckled at the mutual connection between the horizontal ribs 2 and the vertical reinforcements 3, such as Figure 5 As shown, the two locking buckles 41 fasten and connect the intersection of the horizontal reinforcement 2 and the vertical reinforcement 3 from two directions respectively, which on the one hand realizes the connection between the two prefabricated wall panels 1, and on the other hand can effectively improve the stability of the first reinforcement 4 itself, avoiding the first reinforcement 4 from moving and rotating and causing separation, thereby ensuring a stable connection between the two prefabricated wall panels 1.

[0031] Embodiment 2: The reinforcing bar structure of the present application may further include a plurality of second reinforcing bars 5 distributed in a plum blossom shape, the angle between the second reinforcing bars 5 and the horizontal direction is thirty degrees, and the two ends of the second reinforcing bars 5 are respectively embedded in the two prefabricated wall panels 1, such as Figure 2 As shown, the multiple second tie bars 5 in the same vertical plane can be composed of multiple short steel bars, or can be formed by a single steel bar bent into a wavy structure. The function of the second tie bars 5 is mainly to tie the two prefabricated wall panels 1 together and form a casting cavity 10 between the two prefabricated wall panels 1 for concrete pouring.

[0032] In the third embodiment, the two locking buckles 41 of the present application are located in the same plane, and the two locking buckles 41 are perpendicular to each other. Figure 6 As shown, the two locking buckles 41 can be used to fasten the intersection of the horizontal reinforcement 2 and the vertical reinforcement 3 from the same direction. At this time, the first reinforcement 4 is an axisymmetric structure as a whole.

[0033] In order to further improve the strength of the prefabricated wall panel 1, the upper ends of the vertical steel bars 3 inside the two prefabricated wall panels 1 of the present invention are connected to each other to form an inverted "U" shaped structure. Figure 1 and Figure 3 As shown, the vertical steel bars 3 at corresponding positions inside the two prefabricated wall panels 1 are formed by bending the same steel bar, or by welding two separate steel bars to each other, and are mainly used to further connect the two prefabricated wall panels 1 together to improve the connection strength. Additional steel bars 8 are arranged in the lower half of the prefabricated wall panel 1. The additional steel bars 8 are arranged vertically and tied and fixed with the horizontal bars 2. The setting of the additional steel bars 8 is used to reinforce the strength of the lower half of the prefabricated wall panel 1 to avoid deformation and damage of the prefabricated wall panel 1 due to excessive pressure at the bottom of the pouring cavity 10 during concrete pouring.

[0034] In order to install the prefabricated wall panel 1, the prefabricated wall panel 1 of the present application is placed from top to bottom on the upper surface of the mounting base 6, and the mounting base 6 is formed by pouring concrete. When the mounting base 6 is poured, the prefabricated wall panel 1 has not been installed yet, so the pouring of the mounting base 6 is relatively convenient. Two groups of symmetrically distributed connecting steel bars 7 are arranged inside the mounting base 6. The connecting steel bars 7 are in an "L" shape and are used to improve the strength of the mounting base 6 itself, and the upper ends of the connecting steel bars 7 extend from bottom to top into the inner cavity of the casting cavity 10. After the inner cavity concrete of the casting cavity 10 is poured and formed, the upper half of the connecting steel bars 7 is buried in the concrete, which can improve the connection strength between the prefabricated wall panel 1 and the mounting base 6.

[0035] In order to perform waterproofing, the present application also has a waterstop steel plate 9 arranged at the joint between the mounting base 6 and the prefabricated wall panel 1. The upper half of the waterstop steel plate 9 is located in the casting cavity 10, and the lower half is located in the mounting base 6. The waterstop steel plate 9 is used to perform waterproofing on the joint between the prefabricated wall panel 1 and the mounting base 6, and the waterstop steel plate 9 is buried in the concrete to ensure the stability of its own position and will not easily shift its position.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A prefabricated underground retaining wall structure, characterized in that: include: A prefabricated wall panel (1), wherein two prefabricated wall panels (1) are provided and are parallel to each other, a gap is left between the two prefabricated wall panels (1) to form a casting cavity (10), a tie rod structure is provided in the casting cavity (10), the tie rod structure comprises a plurality of first tie rods (4) distributed in a plum blossom shape, the two ends of the first tie rod (4) are respectively located in the inner cavities of the two prefabricated wall panels (1), the two ends of the first tie rod (4) are bent 135 degrees to form a locking buckle (41), and the two locking buckles (41) are staggered 90 degrees around the axial direction of the middle part of the first tie rod (4); The prefabricated wall panel (1) is provided with horizontal ribs (2) and vertical steel bars (3) which are perpendicular to each other. A plurality of the horizontal ribs (2) and vertical steel bars (3) are provided to form a "well"-shaped structure. The locking buckle (41) is buckled at the connection between the horizontal ribs (2) and the vertical steel bars (3).

2. A prefabricated underground retaining wall structure according to claim 1, characterized in that: The tie rod structure comprises a plurality of second tie rods (5) distributed in a plum blossom shape, the angle between the second tie rods (5) and the horizontal direction is thirty degrees, and the two ends of the second tie rods (5) are respectively embedded in the two prefabricated wall panels (1).

3. A prefabricated underground retaining wall structure according to claim 1, characterized in that: The two locking buckles (41) are located in the same plane, and the two locking buckles (41) are perpendicular to each other.

4. The prefabricated underground retaining wall structure according to claim 1, characterized in that: The upper ends of the vertical steel bars (3) inside the two prefabricated wall panels (1) are connected to each other to form an inverted "U"-shaped structure. The lower half of the prefabricated wall panel (1) is provided with additional steel bars (8), which are arranged vertically and tied and fixed to the horizontal bars (2).

5. The prefabricated underground retaining wall structure according to claim 1, characterized in that: The prefabricated wall panel (1) is placed from top to bottom on the upper surface of the mounting base (6), and two groups of symmetrically distributed connecting steel bars (7) are arranged inside the mounting base (6). The connecting steel bars (7) are in an "L" shape, and the upper ends of the connecting steel bars (7) extend from bottom to top into the inner cavity of the casting cavity (10).

6. A prefabricated underground retaining wall structure according to claim 5, characterized in that: A water-stop steel plate (9) is provided at the joint between the installation base (6) and the prefabricated wall panel (1); the upper half of the water-stop steel plate (9) is located in the casting cavity (10), and the lower half is located in the installation base (6).

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