Foundation pit top prefabricated assembled retaining wall structure

Abstract

The utility model discloses a kind of foundation pit top prefabricated assembly type retaining wall structure, which belongs to foundation pit construction technical field. Including crown beam and second water retaining groove, the top of the crown beam is provided with multiple groups of second water retaining groove, the top of the crown beam at the side of the second water retaining groove is provided with two groups of second jack, the top of the crown beam is provided with main retaining wall board, the sidewall of the main retaining wall board is provided with two groups of bearing arm, the both ends of the bearing arm are provided with adjusting arm, the one end of the adjusting arm close to bearing arm is provided with pin shaft, and adjusting arm is movably connected with bearing arm by pin shaft, the sidewall of the bearing arm is symmetrically movably installed with sleeve. The utility model not only realizes flexible adjustment adaptation different shape retaining wall foundation pit top, facilitates flexible assembly adaptation different height use scene, and improves the flexibility of use and the convenience of assembly.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit construction technology, specifically to a prefabricated retaining wall structure for the top of a foundation pit. Background Technology

[0002] A retaining wall for a foundation pit is a structure used to support the soil around the foundation pit and prevent soil deformation and instability. Its main function is to ensure the stability and safety of the foundation pit and prevent soil landslides or collapses. Traditional retaining walls have the following disadvantages: they require tying steel bars, erecting formwork, pouring concrete, and then removing the formwork after the concrete has reached its strength. Moreover, the formwork erection is cumbersome and labor-intensive when constructing the capping beam, resulting in significant waste. To improve this situation, a prefabricated assembled retaining wall structure for the top of the foundation pit is proposed.

[0003] As disclosed in the authorization announcement number CN215562640U, a precast retaining wall structure for the top of a foundation pit includes a capping beam and a precast retaining wall set on the capping beam. A vertically penetrating grouting hole is reserved on the precast retaining wall. A reserved reinforcing bar is reserved at the top of the capping beam, with part of the reserved reinforcing bar extending outside the capping beam and the part of the reserved reinforcing bar extending outside the capping beam inserted into the grouting hole. A nut is installed at the top of the part of the reserved reinforcing bar extending into the grouting hole. Fine stone micro-expansion concrete is poured into the grouting hole.

[0004] Although it enables the prefabrication and on-site splicing of retaining walls, making construction convenient, economical and environmentally friendly, and improving construction efficiency; it also improves the integrity of the prefabricated retaining wall structure and the strength of the connection nodes by reserving pre-reinforced steel bars on the top of the cap beam and pre-reserving grouting holes on the prefabricated retaining wall in the early stage, inserting the pre-reinforced steel bars into the grouting holes during assembly, and then filling the grouting holes with fine stone micro-expansion concrete in the later stage.

[0005] However, this does not solve the problem that the existing retaining wall structure is not conducive to flexible adjustment to adapt to the top of retaining wall pits of different shapes, nor is it conducive to flexible assembly to adapt to different height usage scenarios, thus affecting the flexibility of use and the convenience of assembly. Utility Model Content

[0006] The purpose of this utility model is to provide a prefabricated retaining wall structure for the top of a foundation pit, so as to solve the problems mentioned in the background art that the retaining wall structure is not easy to flexibly adjust to adapt to the top of the foundation pit with different shapes, is not conducive to flexible assembly to adapt to different height usage scenarios, and affects the flexibility of use and the convenience of assembly.

[0007] To address the technical problems mentioned in the background section, some embodiments of this application provide a prefabricated retaining wall structure for the top of a foundation pit, including a cap beam and a second water-retaining channel. The top of the cap beam is provided with multiple sets of second water-retaining channels. The top of the cap beam on one side of the second water-retaining channel is provided with two sets of second insertion holes. A main retaining wall panel is provided above the cap beam. Two sets of bearing arms are provided on the side wall of the main retaining wall panel. Adjusting arms are provided at both ends of the bearing arms. A pin is provided at the end of the adjusting arm near the bearing arm, and the adjusting arm is movably connected to the bearing arm through the pin.

[0008] Furthermore, sleeves are symmetrically and movably installed on the side walls of the bearing arm, and sliding rods are slidably installed inside the sleeves.

[0009] Preferably, each sleeve has a locking pin on its side wall, and the locking pin extends through the sleeve to the surface of the slide rod and is threadedly connected to the sleeve.

[0010] Preferably, each slide bar is provided with a linkage shaft at one end near the adjusting arm, and the slide bar is movably connected to the adjusting arm through the linkage shaft.

[0011] Preferably, secondary retaining walls are provided on both sides of the main retaining wall, and the secondary retaining walls are connected to the adjusting arm.

[0012] Preferably, both the main retaining wall and the secondary retaining wall are provided with a water-blocking plate at their bottom ends, and two sets of plug-in columns are provided at the bottom ends of both the main retaining wall and the secondary retaining wall on one side of the water-blocking plate.

[0013] Preferably, the top of both the main retaining wall and the secondary retaining wall is provided with a first water-blocking groove, and the top of both the main retaining wall and the secondary retaining wall on one side of the first water-blocking groove is provided with two sets of first insertion holes.

[0014] Preferably, both sides of the main retaining wall panel and the secondary retaining wall panel are provided with limiting grooves, and steel plates are provided between the main retaining wall panel and the secondary retaining wall panel.

[0015] Preferably, limit strips are provided on both sides of the steel plate, and the steel plate is slidably connected to the limit groove through the limit strips.

[0016] Compared with the prior art, the beneficial effects of this utility model are: the retaining wall structure not only realizes flexible adjustment to adapt to the top of the retaining wall foundation pit of different shapes, and facilitates flexible assembly to adapt to different height usage scenarios, but also improves the flexibility of use and the convenience of assembly.

[0017] When constructing a prefabricated retaining wall on the top of a foundation pit, the capping beam needs to be pre-cast according to the shape of the pit. The shape of the capping beam varies depending on the pit's shape; only the positions of the second water-retaining groove and the second insertion hole on the capping beam need to be clearly determined. Then, the main and secondary retaining wall panels are sequentially hoisted onto the capping beam. The insertion column is inserted into the second insertion hole, and the water-retaining plate is inserted into the second water-retaining groove to complete the assembly of the main and secondary retaining wall panels with the capping beam. The water-retaining plate serves to block water. Next, the limiting strip is aligned with the limiting groove, and the steel plate is moved. The steel plate drives the limiting strip to slide within the limiting groove, thus installing the steel plate between the main and secondary retaining wall panels. The steel plate is ductile and can be adjusted according to the bending angle. To adjust the shape of the steel plate and adapt it to the shape of the cap beam, the position of the secondary retaining wall plate needs to be adjusted. First, loosen the locking pin, pull the sliding rod, which drives the sleeve to rotate. The sliding rod, through the linkage shaft, drives the adjusting arm to rotate around the pin shaft. The bearing arm provides movable support for the adjusting arm, which in turn drives the secondary retaining wall plate to rotate. With the cooperation of the steel plate, it can be used to accommodate cap beams of different shapes. When the height of the retaining wall needs to be increased, the corresponding plug-in column and water-retaining plate are inserted into the first plug hole and the first water-retaining groove, respectively, thus increasing the height of the retaining wall. This adapts to different usage conditions, enabling flexible adjustment to accommodate the top of the foundation pit of retaining walls of different shapes. It facilitates flexible assembly to adapt to different height usage scenarios, improving the flexibility of use and the convenience of assembly. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0019] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0020] In the attached diagram:

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 3 This is a top view cross-sectional structural diagram of the present invention;

[0024] Figure 4 This is a three-dimensional structural diagram of the main and auxiliary retaining wall panels and steel plates of this utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of the crown beam of this utility model.

[0026] Figure label:

[0027] 1. Crown beam; 2. Main retaining wall panel; 3. Steel plate; 4. Secondary retaining wall panel; 5. Bearing arm; 6. Adjusting arm; 7. Sleeve; 8. Locking pin; 9. Slide rod; 10. Linkage shaft; 11. Pin shaft; 12. Insertion column; 13. Water baffle; 14. Limiting groove; 15. First water baffle groove; 16. First insertion hole; 17. Second water baffle groove; 18. Second insertion hole; 19. Limiting strip. Detailed Implementation

[0028] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0029] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0030] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0031] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0032] Please see Figure 1-5This utility model provides an embodiment of a prefabricated retaining wall structure for the top of a foundation pit, including a cap beam 1 and a second water-retaining groove 17. Multiple sets of second water-retaining grooves 17 are provided at the top of the cap beam 1. Two sets of second insertion holes 18 are provided at the top of the cap beam 1 on one side of the second water-retaining groove 17. A main retaining wall plate 2 is provided above the cap beam 1. Two sets of bearing arms 5 are provided on the side wall of the main retaining wall plate 2. Adjusting arms 6 are provided at both ends of the bearing arms 5. A pin 11 is provided at the end of each adjusting arm 6 near the bearing arm 5, and the adjusting arm 6 is movably connected to the bearing arm 5 via the pin 11. Sleeves 7 are symmetrically and movably installed on the side wall of each bearing arm 5. A sliding rod 9 is slidably installed inside each sleeve 7. A locking pin 8 is provided on the side wall of each sleeve 7, and the locking pin 8 extends through the sleeve 7 to the surface of the sliding rod 9 and is threadedly connected to the sleeve 7. A linkage shaft 10 is provided at the end of each sliding rod 9 near the adjusting arm 6, and the sliding rod 9 is movably connected to the adjusting arm 6 via the linkage shaft 10.

[0033] A secondary retaining wall 4 is provided on both sides of the main retaining wall 2, and the secondary retaining wall 4 is connected to the adjusting arm 6. A water baffle 13 is provided at the bottom of both the main retaining wall 2 and the secondary retaining wall 4. Two sets of plug-in columns 12 are provided at the bottom of both the main retaining wall 2 and the secondary retaining wall 4 on one side of the water baffle 13.

[0034] The top of both the main retaining wall panel 2 and the secondary retaining wall panel 4 is provided with a first water-blocking groove 15. The top of both the main retaining wall panel 2 and the secondary retaining wall panel 4 on one side of the first water-blocking groove 15 is provided with two sets of first insertion holes 16. Limiting grooves 14 are provided on both sides of the main retaining wall panel 2 and the secondary retaining wall panel 4. A steel plate 3 is provided between the main retaining wall panel 2 and the secondary retaining wall panel 4.

[0035] Limiting strips 19 are provided on both sides of the steel plate 3, and the steel plate 3 is slidably connected to the limiting groove 14 through the limiting strips 19.

[0036] When constructing a prefabricated retaining wall on the top of a foundation pit, the first step is to precast the capping beam 1 according to the shape of the foundation pit. The shape of the capping beam 1 varies depending on the shape of the foundation pit; only the positions of the second water-retaining groove 17 and the second insertion hole 18 on the capping beam 1 need to be clearly determined. Then, the main retaining wall panel 2 and the secondary retaining wall panel 4 are sequentially hoisted onto the capping beam 1. The insertion column 12 is inserted into the second insertion hole 18, and the water-retaining plate 13 is inserted into the second water-retaining groove 17 to complete the assembly of the main retaining wall panel 2 and the secondary retaining wall panel 4 with the capping beam 1. The water-retaining plate 13 serves to block water. Next, the limiting strip 19 is aligned with the limiting groove 14, and the steel plate 3 is moved. The steel plate 3 drives the limiting strip 19 to slide within the limiting groove 14, thus installing the steel plate 3 between the main retaining wall panel 2 and the secondary retaining wall panel 4. The steel plate 3 is ductile and can be adjusted according to… The shape of the steel plate 3 is adjusted by bending the angle. At the same time, the position of the secondary retaining wall plate 4 needs to be adjusted to match the shape of the cap beam 1. First, loosen the locking pin 8, pull the sliding rod 9, and the sliding rod 9 drives the sleeve 7 to rotate. The sliding rod 9 drives the adjusting arm 6 to rotate around the pin 11 through the linkage shaft 10. The bearing arm 5 provides movable support for the adjusting arm 6, so the adjusting arm 6 drives the secondary retaining wall plate 4 to rotate. With the cooperation of the steel plate 3, it can be matched with cap beams 1 of different shapes. When it is necessary to increase the height of the retaining wall, the corresponding plug-in column 12 and water-retaining plate 13 are inserted into the first plug hole 16 and the first water-retaining groove 15 respectively, which can increase the height of the retaining wall and adapt to different usage conditions. It realizes flexible adjustment to adapt to the top of the foundation pit of retaining wall of different shapes, facilitates flexible assembly to adapt to different height usage scenarios, and improves the flexibility of use and the convenience of assembly.

[0037] Working Principle: When constructing a prefabricated retaining wall on the top of a foundation pit, the capping beam 1 needs to be pre-cast according to the shape of the foundation pit. The shape of the capping beam 1 varies depending on the shape of the foundation pit. Only the positions of the second water-retaining groove 17 and the second insertion hole 18 on the capping beam 1 need to be clearly determined. Then, the main retaining wall panel 2 and the secondary retaining wall panel 4 are hoisted onto the capping beam 1 in sequence. The insertion column 12 is inserted into the second insertion hole 18, and the water-retaining plate 13 is inserted into the second water-retaining groove 17, thus completing the assembly of the main retaining wall panel 2 and the secondary retaining wall panel 4 with the capping beam 1. The water-retaining plate 13 serves to block water. Next, the limiting strip 19 is aligned with the limiting groove 14, and the steel plate 3 is moved. The steel plate 3 drives the limiting strip 19 to slide within the limiting groove 14, thus installing the steel plate 3 onto the main retaining wall panel 2 and the secondary retaining wall panel 4. Between 4, the steel plate 3 is ductile and its shape can be adjusted according to the bending angle. At the same time, in order to adapt to the shape of the cap beam 1, the position of the secondary retaining wall plate 4 needs to be adjusted. First, loosen the locking pin 8, pull the sliding rod 9, and the sliding rod 9 drives the sleeve 7 to rotate. The sliding rod 9 drives the adjusting arm 6 to rotate around the pin 11 through the linkage shaft 10. The bearing arm 5 provides movable support for the adjusting arm 6, so the adjusting arm 6 drives the secondary retaining wall plate 4 to rotate. With the cooperation of the steel plate 3, it can be matched with cap beams 1 of different shapes. When it is necessary to increase the height of the retaining wall, the corresponding plug-in column 12 and water-retaining plate 13 are inserted into the first plug hole 16 and the first water-retaining groove 15 respectively, which can increase the height of the retaining wall and adapt to different usage conditions. The above is the complete usage of the prefabricated assembled retaining wall structure at the top of the foundation pit.

[0038] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A precast assembled retaining wall structure for foundation pit top, comprising a crown beam (1) and a second water retaining groove (17), characterized in that: The top of the crown beam (1) is provided with multiple sets of second water-blocking grooves (17). The top of the crown beam (1) on one side of the second water-blocking groove (17) is provided with two sets of second insertion holes (18). The crown beam (1) is provided with a main retaining wall plate (2). The side wall of the main retaining wall plate (2) is provided with two sets of bearing arms (5). The two ends of the bearing arms (5) are provided with adjusting arms (6). The end of the adjusting arm (6) near the bearing arm (5) is provided with a pin (11). The adjusting arm (6) is movably connected to the bearing arm (5) through the pin (11).

2. The precast top foundation pit retaining wall structure according to claim 1, wherein: Each of the support arms (5) has a sleeve (7) symmetrically and movably installed on its side wall, and each of the sleeves (7) has a sliding rod (9) slidably installed inside its interior.

3. The precast retaining wall structure of claim 2, wherein: Locking pins (8) are provided on the side walls of the sleeve (7), and the locking pins (8) extend through the sleeve (7) to the surface of the slide rod (9) and are threadedly connected to the sleeve (7).

4. The foundation top precast assembled retaining wall structure according to claim 3, characterized in that: Each slide rod (9) is provided with a linkage shaft (10) at one end near the adjusting arm (6), and the slide rod (9) is movably connected to the adjusting arm (6) through the linkage shaft (10).

5. The precast retaining wall structure of claim 4, wherein: Both sides of the main retaining wall (2) are provided with secondary retaining wall (4), and the secondary retaining wall (4) is connected to the adjusting arm (6).

6. The foundation top precast assembled retaining wall structure according to claim 5, characterized in that: Both the main retaining wall (2) and the secondary retaining wall (4) are equipped with water-blocking plates (13) at their bottom ends. Both the main retaining wall (2) and the secondary retaining wall (4) on one side of the water-blocking plate (13) are equipped with two sets of plug-in columns (12).

7. The prefabricated retaining wall structure for the top of the foundation pit according to claim 6, characterized in that: The top of the main retaining wall (2) and the secondary retaining wall (4) are provided with a first water-blocking groove (15), and the top of the main retaining wall (2) and the secondary retaining wall (4) on one side of the first water-blocking groove (15) are provided with two sets of first insertion holes (16).

8. The foundation top precast assembled retaining wall structure according to claim 7, characterized in that: Both sides of the main retaining wall panel (2) and the secondary retaining wall panel (4) are provided with limiting grooves (14), and steel plates (3) are provided between the main retaining wall panel (2) and the secondary retaining wall panel (4).

9. The foundation top precast assembled retaining wall structure according to claim 8, characterized in that: Both sides of the steel plate (3) are provided with limit strips (19), and the steel plate (3) is slidably connected to the limit groove (14) through the limit strips (19).

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