Gravity retaining wall

Abstract

The utility model discloses a gravity type retaining wall belongs to retaining wall technical field, including retaining wall main part and the mixing pile body of preparation with deep mixing pile technology, retaining wall main part sets up in the top of mixing pile body, and the top of adjacent mixing pile body is provided with reinforced cage, and the inside of retaining wall main part is located both sides of reinforced cage and is provided with splicing mechanism, the utility model discloses the splicing mechanism that sets up, when retaining wall reinforced cage constructs, the steel reinforced jack of the convex strip surface reservation of splicing cover shell, and the horizontal steel bar is directly inserted positioning, need not on -the -spot measurement interval or additional banding fixed, greatly shortens the installation time of single -section reinforced cage, and the splicing cover shell and the occlusal convex strip of splicing mechanism are detained in retaining wall, and the physical occlusion structure of occlusal convex strip will be adjacent retaining wall segmentation tightly locked, and resist horizontal earth pressure and shear force, avoid the crack or slip of junction, promote overall shear performance.

Description

Technical Field

[0001] This utility model relates to the field of retaining wall technology, specifically a gravity retaining wall. Background Technology

[0002] Gravity retaining walls are a composite retaining structure that combines deep mixing pile technology with gravity retaining structures. They resist earth pressure through the self-weight and shear strength of cement-soil piles and are suitable for slope protection or foundation pit protection in soft soil foundations. The deep mixing pile machine forcibly mixes cement slurry (or cement powder) with the in-situ soft soil to form cement-soil piles. The piles and the surrounding soil form a composite foundation, which can resist the lateral pressure of the soil by its own weight and maintain soil stability.

[0003] Currently, the construction of retaining walls between multiple piles requires segmented construction. Due to factors such as shrinkage and settlement, the joints of the segmented concrete retaining walls are prone to becoming weak points in shear resistance, leading to wall cracking or overall instability. The irregular gaps formed by the shrinkage of each segment of the concrete retaining wall require high-pressure grouting equipment to inject filler grout, which has low grouting efficiency. Moreover, grout is prone to overflow at the opening of the cracks after grouting. In addition, in traditional processes, transverse reinforcement needs to be measured, tied, or welded on-site, which is labor-intensive and difficult to guarantee positioning accuracy. Spacing errors can easily lead to uneven stress on the reinforcement cage, affecting the overall structural safety. Therefore, a gravity retaining wall is needed to solve the problems existing in the current technology. Utility Model Content

[0004] The purpose of this utility model is to provide a gravity retaining wall to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gravity retaining wall, comprising a retaining wall body and a mixing pile body prepared using deep mixing pile technology. The retaining wall body is positioned above the mixing pile body, and a reinforcing cage is positioned above adjacent mixing pile bodies. The interior of the retaining wall body is equipped with splicing mechanisms on both sides of the reinforcing cage. Each splicing mechanism includes a splicing sleeve, interlocking protrusions, and an opening assembly. The splicing sleeve is positioned above the mixing pile body, the interlocking protrusions are fixed to the two side surfaces of the splicing sleeve, and the opening assembly is positioned inside the splicing sleeve.

[0006] Preferably, the opening assembly includes two sealing baffles, and the inner sidewall of the splicing shell has a communication opening, with the two sealing baffles respectively fitted into the communication opening of the splicing shell.

[0007] Preferably, a support frame is slidably connected between the two sealing baffles, and positioning blocks are fixed on both sides of the sealing baffles. A positioning groove that engages and matches the positioning blocks is provided on the inner side wall of the splicing shell.

[0008] Preferably, the splicing shell has a grouting port inside, which is connected to the connecting port, and the front and rear surfaces of the splicing shell are provided with template docking grooves.

[0009] Preferably, the surface of the interlocking protrusion is provided with a rebar insertion hole, and the end of the transverse rebar of the rebar cage is inserted into the rebar insertion hole of the interlocking protrusion.

[0010] Preferably, the lower end face of the splicing shell is fixed with an upright stake, which is inserted into the interior of the mixing pile body.

[0011] This utility model provides a gravity retaining wall, which has the following advantages compared with the prior art:

[0012] With the splicing mechanism in place, the pre-drilled holes for reinforcing bars on the surface of the splicing sleeve during the construction of the retaining wall reinforcement cage facilitate the direct insertion and positioning of transverse reinforcing bars, eliminating the need for on-site spacing measurement or additional binding and fixing. This significantly shortens the installation time of a single section of the reinforcement cage. The splicing sleeve and interlocking protrusions in the splicing mechanism are placed in the retaining wall. The physical interlocking structure of the interlocking protrusions tightly locks adjacent retaining wall sections, resisting horizontal earth pressure and shear force, preventing cracking or slippage at the joints, and improving the overall shear resistance.

[0013] By using a pre-designed splicing shell and opening components, cement grout or epoxy resin is injected into the joints through the grouting ports on the splicing shell to fill tiny gaps and eliminate potential leakage risks. This method is particularly suitable for foundation pit scenarios with abundant groundwater. Furthermore, the use of pre-set grouting ports on the splicing shell can neatly unify the width of gaps formed by concrete shrinkage during the construction of traditional segmented retaining walls. Additionally, the leaking ports on the front and rear walls of the splicing shell can prevent grout overflow. Attached Figure Description

[0014] Figure 1 This is a three-dimensional view of the overall structure of this utility model;

[0015] Figure 2 This is a three-dimensional view of the steel cage structure of this utility model;

[0016] Figure 3 This is a three-dimensional view of the splicing mechanism structure of this utility model;

[0017] Figure 4 This is a diagram showing the disassembled state of the sealing baffle of this utility model.

[0018] In the diagram: 1. Main body of retaining wall; 2. Mixing pile body; 3. Splicing mechanism; 4. Reinforcing cage; 5. Splicing sleeve; 6. Interlocking rib; 7. Opening assembly; 8. Sealing baffle; 9. Support frame; 10. Positioning block; 11. Positioning groove; 12. Grouting port for filling joints; 13. Connecting port; 14. Reinforcing bar insertion hole; 15. Formwork butt groove; 16. Erecting pile. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 This utility model provides a gravity retaining wall, including a retaining wall body 1 and a mixing pile body 2 prepared using deep mixing pile technology. The retaining wall body 1 is located above the mixing pile body 2. The retaining wall body 1 has a splicing mechanism 3 inside, and a steel cage 4 is set between two adjacent splicing mechanisms 3. The splicing mechanism 3 includes a splicing sleeve 5, an interlocking protrusion 6, and an opening component 7. The splicing sleeve 5 is located above the mixing pile body 2. The interlocking protrusion 6 is fixed on both sides of the splicing sleeve 5. The opening component 7 is located inside the splicing sleeve 5. The surface of the interlocking protrusion 6 has a steel bar insertion hole 14. The ends of the transverse steel bars of the steel cage 4 are inserted into the steel bar insertion holes 14 of the interlocking protrusion 6. The splicing sleeve 5 and the interlocking protrusion 6 in the splicing mechanism 3 are left in the retaining wall. The physical interlocking structure of the interlocking protrusion 6 tightly locks the adjacent retaining wall segments, resists horizontal earth pressure and shear force, avoids cracking or slippage at the joint, and improves the overall shear resistance.

[0021] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth noting that the opening component 7 includes two sealing baffles 8. The two sides of the splicing shell 5 connected to the interlocking protrusion 6 are provided with connecting openings 13. The two sealing baffles 8 are respectively fitted into the connecting openings 13 of the splicing shell 5, and a support frame 9 is slidably connected between the two sealing baffles 8. Positioning blocks 10 are fixed on both sides of the sealing baffles 8. Positioning grooves 11 that engage and match with the positioning blocks 10 are provided on the inner walls of both sides of the connecting openings 13 of the splicing shell 5. A joint filling grouting port 12 is provided inside the splicing shell 5. The joint filling grouting port 12 is connected to the connecting openings 13. Template docking grooves 15 are provided on the front and rear surfaces of the splicing shell 5. Cement grout or epoxy resin is injected into the joint through the joint filling grouting port 12 of the splicing shell 5 to fill the tiny gaps and eliminate the risk of leakage.

[0022] Further as Figure 1 As shown, it is worth noting that the lower end face of the splicing shell 5 is fixed with a vertical stake 16, which is inserted into the interior of the mixing pile body 2.

[0023] Specifically, during the preparation stage of retaining wall construction, the pile driver is accurately positioned at the designed pile location, the pile driver is started, and the drill bit is slowly drilled into the soil layer. At the same time, grouting is sprayed and mixed according to the design requirements of the grouting volume and mixing speed. After the mixing pile construction is completed, the pile driver is moved to the next pile location to carry out the construction of the next mixing pile body 2.

[0024] Before the mixing pile body 2 solidifies, the splicing mechanism 3 is inserted into the inside of the mixing pile body 2 by erecting the pile 16. When the retaining wall steel cage 4 is constructed, the steel bar insertion hole 14 reserved on the surface of the interlocking protrusion 6 of the splicing sleeve 5 makes it convenient for the horizontal steel bars to be directly inserted and positioned without the need for on-site measurement of spacing or additional binding and fixing, which greatly shortens the installation time of a single section of steel cage.

[0025] During the template installation stage, four templates surround the outside of the splicing shell 5 to form a pouring cavity. The prepared concrete is injected into the molding cavity to realize the construction of the retaining wall. The splicing shell 5 and the interlocking rib 6 in the splicing mechanism 3 are left in the retaining wall. The physical interlocking structure of the interlocking rib 6 tightly locks the adjacent retaining wall segments to resist horizontal earth pressure and shear force, avoid cracking or slippage at the connection, and improve the overall shear resistance.

[0026] After the main body of the retaining wall is formed, the support frame 9 between the two sealing baffles 8 is slid upward first. Then, the sealing baffles 8 are removed from the connecting opening 13 and the splicing shell 5 is taken out. Cement grout or epoxy resin is injected into the joint through the grouting port 12 of the splicing shell 5 to fill the tiny gaps and eliminate the risk of leakage. This method is especially suitable for foundation pit scenarios with abundant groundwater. In addition, the method of using the pre-set gap grouting port of the splicing shell 5 can neatly unify the gap width formed by the shrinkage of the concrete in the front and back construction of the traditional segmented retaining wall. Moreover, the leakage outlet of the sealing grouting port 12 of the front and back walls of the splicing shell 5 can prevent the grout from overflowing.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Although embodiments of this utility model have been shown and described, this does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model. Regarding the embodiments of this utility model, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gravity retaining wall, characterized in that: It includes a retaining wall body and a mixing pile body, wherein the retaining wall body is disposed above the mixing pile body; The retaining wall body is equipped with a splicing mechanism, which is connected to the mixing pile body, and a steel cage is provided between two adjacent splicing mechanisms. The splicing mechanism includes a splicing sleeve and interlocking protrusions. The interlocking protrusions are disposed on both sides of the splicing sleeve and are used to connect the reinforcing cage.

2. A gravity retaining wall according to claim 1, characterized in that: The splicing mechanism also includes an opening component; The opening assembly includes two sealing baffles. The two sides of the splicing sleeve connected to the interlocking protrusion are provided with connecting openings. The connecting openings are adapted to the sealing baffles so that the two sealing baffles are respectively fitted into the two connecting openings.

3. A gravity retaining wall according to claim 2, characterized in that: Multiple positioning blocks are arranged vertically on both sides of the sealing baffle, and positioning grooves that engage and match the positioning blocks are opened on the inner walls of both sides of the connecting opening of the splicing shell.

4. A gravity retaining wall according to claim 2, characterized in that: A supporting frame is slidably connected between the two sealing baffles.

5. A gravity retaining wall according to claim 2, characterized in that: The splicing shell has a grouting port inside, which is connected to the connecting port. The splicing shell also has a template docking groove.

6. A gravity retaining wall according to claim 1, characterized in that: The surface of the interlocking protrusion is provided with a rebar insertion hole, and the end of the transverse rebar of the rebar cage is inserted into the rebar insertion hole.

7. A gravity retaining wall according to claim 1, characterized in that: The lower end face of the splicing shell is fixed with an upright stake, which is inserted into the mixing pile body.

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