Fabricated counterfort retaining wall

Abstract

The utility model provides an assembly type counterfort retaining wall which comprises a bottom plate, a plurality of rows of cavity panel modules are arranged on the bottom plate side by side, a counterfort module is arranged at the splicing position of every two rows of cavity panel modules, and each row of cavity panel module comprises a plurality of wall panels spliced in the height direction. Each set of buttress module comprises a buttress base and a plurality of buttress rib plates, and the construction efficiency can be remarkably improved through the modular splicing type design; penetrating reinforcing steel bars used for penetrating the cavity panel modules and the buttress modules are embedded in the bottom plate, a reinforcing steel bar cage is embedded in the position, between every two adjacent sets of cavity panel modules, of the bottom plate, and the cavity panel modules, the buttress modules and the bottom plate form a firm and stable connecting system through the arrangement of the penetrating reinforcing steel bars and the reinforcing steel bar cages. The cooperative bearing capacity of the wall body and the foundation plate is enhanced; each wall panel is provided with a cavity capable of being filled with gravel materials, and on the premise that the thickness and the bearing capacity of the retaining wall are guaranteed, the use amount of concrete and other pouring materials is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of buttress retaining wall technology, and in particular to a prefabricated buttress retaining wall. Background Technology

[0002] Retaining walls, as an important geotechnical structure, are widely used in bridge, tunnel, road, and water conservancy engineering projects. Based on materials, retaining walls can be classified as stone retaining walls, concrete retaining walls, and reinforced concrete retaining walls. According to structural form, retaining walls can be divided into gravity retaining walls, cantilever retaining walls, buttress retaining walls, and box-type retaining walls. The differences in structural forms determine their mechanical properties and engineering adaptability. Buttress retaining walls, by adding longitudinal reinforcing ribs (buttresses) to form a spatial support system, can effectively enhance the cooperative bearing capacity of the wall body and foundation slab, and significantly improve the stress distribution of the overall structure. However, during the construction of buttress retaining walls, in order to maintain the stability and bearing capacity of the retaining wall, it is usually necessary to support a large amount of formwork in a designated area for in-situ concrete pouring. The construction speed is slow, and a relatively thick pouring space usually needs to be reserved when supporting the formwork to ensure the thickness of the retaining wall, guarantee its bearing capacity, and improve its overall integrity. This requires the use of a large amount of pouring material. Utility Model Content

[0003] The purpose of this utility model is to provide a prefabricated buttress retaining wall that, while ensuring overall stability,

[0004] This utility model provides a prefabricated buttress retaining wall, including a base plate. Several rows of hollow panel modules are arranged side by side on the base plate. A buttress module is provided at the joint of every two rows of hollow panel modules. Each row of hollow panel modules includes multiple wall panels spliced ​​along the height direction. Each group of buttress modules includes a buttress base and multiple buttress ribs. The base plate is pre-embedded with reinforcing bars for passing through the hollow panel modules and the buttress modules. A reinforcing cage is embedded between every two groups of adjacent hollow panel modules on the base plate. Each wall panel has a cavity.

[0005] Furthermore, the base plate is provided with mounting slots corresponding to the cavity panel module and the buttress module.

[0006] Furthermore, both the cavity panel module and the buttress module are perpendicular to the base plate, and the buttress module is perpendicular to the cavity panel module.

[0007] Furthermore, the base is pre-embedded with connecting bolts for connecting the buttress bases, and each buttress base is fixedly installed on the base by two rows of connecting bolts.

[0008] Furthermore, both the buttress base and the buttress rib are provided with multiple first through holes, through which the buttress base and the buttress rib are inserted into the inserted reinforcing bars; the wall panel is provided with two rows of second through holes, through which the buttress module composed of multiple wall panels is inserted into the inserted reinforcing bars.

[0009] Furthermore, each of the wall panels is provided with splicing ear plates on both sides, and every two groups of adjacent cavity panel modules are spliced ​​together by splicing ear plates.

[0010] Furthermore, a casting cavity is formed between the splicing point of each pair of adjacent cavity panel modules and the buttress module, and the reinforcing cage is inserted into the casting cavity.

[0011] Furthermore, each of the cavity panel modules has multiple layers of pre-reserved reinforcing bars along its height on both sides and on the side of the buttress module near the casting cavity.

[0012] Furthermore, the wall panel is provided with drainage holes, and a reverse filter layer is provided at the drainage holes. The reverse filter layer includes a gravel layer and a geotextile layer from the inside to the outside, and the geotextile covers the outer port of the drainage hole.

[0013] Furthermore, interlocking teeth are provided between the buttress base and the buttress rib, as well as between every two adjacent buttress ribs.

[0014] The technical solution of this utility model significantly improves construction efficiency through modular design. Compared with traditional cast-in-place process, it eliminates the need for extensive formwork support in designated areas, reducing the cumbersome procedures of formwork erection and dismantling, and effectively accelerating the construction progress. The cavities in the wall panels can be filled with sand and gravel materials, which greatly reduces the amount of concrete and other pouring materials while ensuring the thickness and load-bearing capacity of the retaining wall, thus lowering material costs. The design of pre-embedded reinforcing bars and reinforcing cages in the base slab forms a solid and stable connection system between the cavity panel modules, buttress modules, and base slab, enhancing the collaborative load-bearing capacity of the wall and foundation slab, optimizing the stress distribution of the overall structure, and improving the stability and integrity of the retaining wall. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall assembly structure of the retaining wall.

[0017] Figure 2 A schematic diagram showing the structure for reserving reinforcing bars and connecting bolts for the base plate.

[0018] Figure 3 This is a schematic diagram of the connection structure of multiple wall panels, buttress bases and buttress ribs in this utility model.

[0019] Figure 4 This is a schematic diagram of the wall panel structure in this utility model.

[0020] Figure 5 This is a schematic diagram of the structure of the buttress base in this utility model.

[0021] Figure 6 This is a schematic diagram of the buttress rib plate in this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1-wall panel, 101-cavity, 2-buttress base, 3-buttress rib, 4-base plate, 401-installation groove, 5-through reinforcing bar, 6-reinforcing cage, 7-connecting bolt, 8-reserved reinforcing bar, 9-first through hole, 10-second through hole. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example 1

[0027] like Figures 1-6 As shown, the technical solution of this utility model provides a prefabricated buttress retaining wall, including a base plate 4 cast on site. Several rows of hollow panel modules 101 are arranged side by side on the base plate 4. A buttress module is provided at the splicing point of every two rows of hollow panel modules 101. Both the hollow panel modules 101 and the buttress modules are perpendicular to the base plate 4, and the buttress modules are perpendicular to the hollow panel modules 101. The base plate 4 has mounting grooves 401 corresponding to the hollow panel modules 101 and the buttress modules. Each row of hollow panel modules 101 includes multiple wall panels 1 spliced ​​along the height direction. Each wall panel 1 has three cavities 101, so that the hollow panel module 101 formed after splicing has three cavities 101, realizing the hollowing out of the retaining wall. The wall body is lighter, which not only reduces the pressure on the foundation, but also reduces the assembly difficulty.

[0028] Each buttress module includes a buttress base 2 and multiple buttress ribs 3. The height of the buttress base 2 is greater than the height of the wall panel 1 but less than the sum of the heights of two wall panels 1. Connecting bolts 7 are pre-embedded on the base for connecting the buttress base 2. Each buttress base 2 is fixedly installed on the base by two rows of connecting bolts 7. Through-steel bars 5 are pre-embedded on the base plate 4 for passing through the cavity 101 panel module and the buttress module, respectively. Multiple first through holes 9 are opened on both the buttress base 2 and the buttress ribs 3, and the buttress base 2 and the buttress ribs 3 are passed through the first through holes 9 onto the through-steel bars 5. Two rows of second through holes 10 are opened on the wall panel 1, and the buttress module assembled from multiple wall panels 1 is passed through the second through holes 10 onto the through-steel bars 5. The through-steel bars 5 in this technical solution are HRB400 ribbed steel bars, and their diameter and reserved length are determined based on the height of the retaining wall and internal force calculations.

[0029] A steel cage 6 is embedded between each pair of adjacent cavity 101 panel modules on the base plate 4. The corresponding structure is as follows: each wall panel 1 has splicing ear plates on both sides, and each pair of adjacent cavity 101 panel modules is spliced ​​together by splicing ear plates; a casting cavity is formed between the splicing point of each pair of adjacent cavity 101 panel modules and the buttress module, and the steel cage 6 is inserted into the casting cavity. The casting cavity facilitates subsequent grouting connection, eliminates the connection gap between the upper component and the base plate 4, and enhances the overall stability.

[0030] On both sides of each cavity 101 panel module and on the side of the buttress module near the casting cavity, multiple layers of reserved steel bars 8 are provided along the height direction. These are used to connect the cavity 101 panel module and the buttress module into a whole after concrete is poured into the casting cavity.

[0031] Drainage holes are provided on the wall panel 1. These drainage holes can promptly drain rainwater, groundwater, or other seepage water from the backfill soil behind the wall, preventing water from stagnating behind the wall for a long time and reducing the lateral thrust of hydrostatic pressure on the wall. A filter layer is installed at the drainage hole. The filter layer consists of a gravel layer and a geotextile from the inside out. The geotextile covers the outer end of the drainage hole. The filter layer prevents soil particles from being lost while draining water, preventing the drainage hole from becoming blocked and ensuring the long-term effectiveness of the drainage system.

[0032] Example 2

[0033] Compared with Embodiment 1, this embodiment differs in that: there are interlocking teeth between the buttress base 2 and the buttress rib 3, as well as between every two adjacent buttress ribs 3. The side of the teeth closest to the wall panel 1 is a right angle, which is used to limit the relative displacement between the buttress base 2 and the buttress rib 3, as well as between every two adjacent buttress ribs 3.

[0034] Before assembly, the wall panel 1, buttress base 2, and buttress rib 3 need to be prefabricated according to the design drawings. Long, narrow foundation pits along the retaining wall layout direction should be excavated at the corresponding locations. Then, C30 reinforced concrete should be poured to form the base slab 4, with installation grooves 401 reserved. Before pouring, pre-installed through-steel bars 5 should be installed; the through-steel bars 5 should be HRB400 ribbed type. Then, the cavity 101 panel module and the buttress module should be assembled separately. During the assembly of the cavity 101 panel module: the wall panel 1 is hoisted so that the second through hole 10 on the wall panel 1 passes through the top of the through-steel bar 5. The bottom plate 4 and wall panel 1 are hoisted to a perpendicular position before assembly. The bottom wall panel 1 is connected to the bottom plate 4 with mortar at the mounting groove 401. During the assembly of the buttress module: first, the buttress base 2 is hoisted to a perpendicular position with the bottom plate 4 before assembly. The mounting groove 401 on the bottom plate 4 is connected to the buttress base 2 with mortar. Then, the buttress rib 3 is hoisted along the height direction at the top of the buttress base 2. During the assembly process, the wall panel 1 is hoisted to match the number of layers of the buttress rib 3. The joints are connected by pouring concrete without formwork. When assembling the cavity 101 panel module and the buttress module, the principle of assembling one layer and pouring the joint layer at a time is followed until the new prefabricated retaining wall is formed. After the wall assembly is completed, sand and gravel are filled into the cavity 101 to enhance the overall stability.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A prefabricated buttress retaining wall, characterized in that, The system includes a base plate on which several rows of cavity panel modules are arranged side by side. A buttress module is provided at the joint of every two rows of cavity panel modules. Each row of cavity panel modules includes multiple wall panels spliced ​​along the height direction. Each group of buttress modules includes a buttress base and multiple buttress ribs. The base plate is pre-embedded with reinforcing bars for passing through the cavity panel modules and the buttress modules. A reinforcing cage is embedded between every two groups of adjacent cavity panel modules on the base plate. Each wall panel has a cavity.

2. The prefabricated buttress retaining wall according to claim 1, characterized in that, The base plate has mounting slots corresponding to the cavity panel module and the buttress module.

3. The prefabricated buttress retaining wall according to claim 1, characterized in that, Both the cavity panel module and the buttress module are perpendicular to the base plate, and the buttress module is perpendicular to the cavity panel module.

4. The prefabricated buttress retaining wall according to claim 1, characterized in that, The base has pre-embedded connecting bolts for connecting the buttress bases, and each buttress base is fixedly installed on the base by two rows of connecting bolts.

5. The prefabricated buttress retaining wall according to claim 1, characterized in that, Both the buttress base and the buttress rib have multiple first through holes, through which the buttress base and the buttress rib pass on the reinforcing bars; the wall panel has two rows of second through holes, through which the buttress module, which is assembled from multiple wall panels, passes on the reinforcing bars.

6. The prefabricated buttress retaining wall according to claim 1, characterized in that, Each of the wall panels is provided with splicing ear plates on both sides, and every two groups of adjacent cavity panel modules are spliced ​​together by splicing ear plates.

7. The prefabricated buttress retaining wall according to claim 6, characterized in that, A casting cavity is formed between the splicing point of each pair of adjacent cavity panel modules and the buttress module, and the reinforcing cage is inserted into the casting cavity.

8. The prefabricated buttress retaining wall according to claim 7, characterized in that, Each of the cavity panel modules has multiple layers of pre-reserved steel bars along its height on both sides and on the side of the buttress module near the casting cavity.

9. The prefabricated buttress retaining wall according to claim 1, characterized in that, The wall panel has drainage holes, and a filter layer is provided at the drainage holes. The filter layer includes a gravel layer and a geotextile from the inside to the outside, and the geotextile covers the outer port of the drainage hole.

10. The prefabricated buttress retaining wall according to claim 1, characterized in that, There are interlocking teeth between the buttress base and the buttress rib, as well as between every two adjacent buttress ribs.

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