Complex reinforced retaining wall structure and construction method thereof

Abstract

The invention provides a complex reinforced retaining wall structure and a construction method thereof. The complex reinforced retaining wall structure comprises a wall body, an upper beam and a base, the wall body comprises a plurality of cross-shaped wall bricks and a plurality of convex wall bricks, and the upper beam comprises a plurality of beam walls and two first slope strips; the base is arranged in foundation soil; the wall body is formed by splicing a plurality of cross-shaped wall bricks and a plurality of convex wall bricks, the bottom of the wall body is connected with the top of the base, and the top of the wall body is connected with the bottom of the upper beam. According to the complex reinforced retaining wall structure and the construction method thereof, through combination of the latticed wall body and the three-dimensional fixing mechanism, the wind resistance and shock resistance can be further improved, and prefabricated parts can be produced in an industrialized mode, so that the complex reinforced retaining wall structure and the construction method have the advantages that the construction period can be shortened, labor force is reduced, and the machining cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical fields of road engineering and geotechnical engineering, and particularly relates to a complex reinforced retaining wall structure and a construction method thereof. Background Art

[0002] Traditional gravity retaining walls rely on the self-weight of the wall to resist earth pressure, and have defects such as a large amount of masonry work, a large floor area, and a long construction period. In particular, it is difficult to meet the engineering requirements in narrow urban sections or filling areas. Although reinforced retaining walls have been applied, problems such as the reliability of their connection structures, the control of verticality during construction, and the uniformity of the compaction degree of fillers still need to be optimized to further improve the safety and economy of the retaining wall. Therefore, it is necessary to provide a new complex reinforced retaining wall structure and a construction method thereof to solve the above technical problems. Summary of the Invention

[0003] The technical problem solved by the present invention is to provide a complex reinforced retaining wall structure and a construction method thereof, which can further improve the wind and earthquake resistance through the combination of a grid-shaped wall and a three-dimensional fixing mechanism, and the precast components can be produced in a factory, so the construction period can be shortened, the labor force can be reduced, and the processing cost can be reduced.

[0004] To solve the above technical problems, the complex reinforced retaining wall structure provided by the present invention includes: a wall, an upper beam, and a base. The wall includes a plurality of cross-shaped wall bricks and a plurality of convex wall bricks. The upper beam includes a plurality of beam walls and two slope bars one.

[0005] The base is arranged in the foundation soil.

[0006] The wall is assembled by a plurality of cross-shaped wall bricks and a plurality of convex wall bricks. The bottom of the wall is connected to the top of the base, and the top of the wall is connected to the bottom of the upper beam.

[0007] As a further solution of the present invention, the wall, the upper beam, and the base are connected and fixed by a plurality of fixing mechanisms. The fixing mechanism includes a limiting steel pipe, multiple groups of limiting inserts, a reinforcing bar one, a plurality of extrusion blocks, three reinforcing bars two, three through holes, and fixing bolts. An opening one is opened on the beam wall, an opening two is opened on the cross-shaped wall brick, an opening three is opened on the convex wall brick, and an opening four is opened on the base.

[0008] As a further solution of the present invention, the opening one, the opening two, the opening three, and the opening four are communicated. The limiting steel pipe passes through the opening one, the opening two, and the opening three and extends into the opening four. Multiple groups of through openings are opened on the limiting steel pipe, and the multiple groups of through openings are respectively located in the opening one on the beam wall, the opening two on the cross-shaped wall brick, the opening three on the convex wall brick, and the opening four on the base.

[0009] As a further solution of the present invention, there are gaps between the first opening, the second opening, the third opening and the fourth opening and the limiting steel pipe. Concrete is poured into the gaps and the limiting steel pipe. A group of limiting slots are provided on the inner walls of the first opening, the second opening, the third opening and the fourth opening. The multiple groups of limiting slots respectively correspond to multiple groups, and the multiple limiting slot openings correspond one by one. Multiple groups of limiting inserts are respectively movably installed on the multiple openings, and the multiple groups of limiting slots are respectively adapted to the multiple groups of limiting inserts.

[0010] As a further solution of the present invention, the first steel bar is installed in the limiting steel pipe, multiple extrusion blocks are all installed in the limiting steel pipe, the multiple extrusion blocks are all fixedly connected to the first steel bar, the multiple extrusion blocks are respectively adapted to the multiple groups of limiting inserts, and three second steel bars are arranged in a triangular array to surround and install the first steel bar on the extrusion blocks. Three through holes are arranged in a triangular array on the extrusion blocks. The fixing bolt is installed in the limiting steel pipe, and the fixing bolt is fixedly connected to the top ends of the first steel bar and the three second steel bars.

[0011] As a further solution of the present invention, slope strips one are provided on the outer walls on both sides of the wall body, and the two slope strips one are both connected to the bottoms of multiple beam walls. Slope strips two are provided on the outer walls on both sides of the [description missing here], and the two slope strips two are both connected to the top of the base.

[0012] As a further solution of the present invention, the slope strip one is used to guide rainwater drainage and reduce the water accumulation pressure at the top of the wall body. The base is buried in the foundation soil, poured with C30 concrete, and a 2:8 lime soil cushion with a thickness of 0.3m is set at the bottom, so as to improve the bearing capacity of the foundation.

[0013] The present invention also provides a construction method for a complex reinforced retaining wall structure, including the complex reinforced retaining wall structure as described in claim 1 and the following construction steps:

[0014] S1. Foundation treatment: Excavate the foundation trench, backfill 3:7 lime soil to the design elevation, compact it in layers, with the compaction degree ≥ 95%, pour the C30 concrete base, and reserve 8 Φ150mm PVC test holes;

[0015] S2. Wall body assembly: Install cross-shaped wall bricks and convex wall bricks on the first layer. Pass the limiting steel pipe through the openings of each component, insert the first steel bar and the second steel bar, and finally inject C30 fine aggregate concrete for fixation. The bolt torque is controlled at 80 - 100 N·m;

[0016] S3. Upper beam installation: Connect the beam wall and the top of the wall body through the slope strip one, fix it with M16 bolts, and fill the joint with an elastic sealing material.

[0017] As a further solution of the present invention, the paving thickness of each layer for layered compaction is 25 cm. After compacting 6 - 8 times, the sand replacement method is used to detect the compaction degree, and the measured values are all ≥ 93%.

[0018] As a further solution of the present invention, the model of the limiting steel pipe is Φ80mm, and the models of the first steel bar and the second steel bar are Φ20mm and Φ16mm respectively.

[0019] Compared with the related technologies, the complex reinforced retaining wall structure and its construction method provided by the present invention have the following beneficial effects:

[0020] 1. Through the combination of the grid-shaped wall and the three-dimensional fixing mechanism, the present invention can further improve the wind and earthquake resistance. Moreover, the precast components can be produced in factories, so the construction period can be shortened, the labor force can be reduced, and the processing cost can be lowered.

[0021] 2. Through the combined assembly method of the cross-shaped wall bricks and the convex wall bricks, the present invention can flexibly adjust the wall structure according to the slope angle, height and cross-sectional shape (such as special structures like circles and squares), meeting the personalized needs of different instrument and meter parts processing or retaining wall projects. The settings of the first slope strip and the second slope strip allow specific inclination angles to be formed on both sides of the wall and the top of the base, providing a standardized interface for side processing or inclined surface support and reducing on-site measurement and cutting processes.

[0022] 3. Through the combination of the limiting steel pipe, the limiting insertion block and the steel bar structure, a three-dimensional fixing system of longitudinal support and transverse limitation is formed. The cooperation between the limiting insertion block and the slot realizes the precise positioning of the components and avoids assembly deviation. The combination of the steel bar framework and the concrete enhances the overall rigidity, ensuring no relative displacement under the action of the load and forming a stable clamping of circular or square parts. The second steel bars and the extrusion blocks distributed in a triangular array disperse the concentrated load to the entire cross-section of the limiting steel pipe. Combined with the wrapping effect of the concrete, the stress distribution is more uniform, reducing the structural damage caused by local stress concentration.

[0023] 4. Through the preset openings and fixing structures of each component, only concrete needs to be poured after on-site assembly, simplifying the construction steps and shortening the construction period. At the same time, the modular design is convenient for precast production, improving the construction efficiency. The concrete fills the voids and the inside of the steel pipes, forming a sealed protective layer, reducing the risk of steel bar corrosion. The transition connection of the slope strip structure avoids stress concentration points and extends the service life of the retaining wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the drawings.

[0025] Figure 1 It is the structural schematic diagram of the complex reinforced retaining wall structure of the present invention;

[0026] Figure 2 It is the sectional structural schematic diagram of the complex reinforced retaining wall structure of the present invention;

[0027] Figure 3For Figure 2 Schematic enlarged structure diagram of part A in

[0028] Figure 4 For Figure 2 Schematic enlarged structure diagram of part B in

[0029] Figure 5 Schematic on-site diagram of the complex reinforced retaining wall structure of the present invention;

[0030] Figure 6 Schematic process diagram of the construction method of the complex reinforced retaining wall structure of the present invention;

[0031] Figure 7 Schematic diagram of excavating the foundation trench in the construction method of the complex reinforced retaining wall structure of the present invention.

[0032] In the figure: 1, wall body; 101, cross-shaped wall bricks; 102, convex wall bricks; 2, upper beam; 201, beam wall; 202, first slope strip; 3, base; 301, second slope strip; 4, limiting steel pipe; 5, limiting insertion block; 6, first steel bar; 7, extrusion block; 8, second steel bar; 9, through hole; 10, fixing bolt. Specific implementation mode

[0033] A complex reinforced retaining wall structure and its construction method include: a wall body 1, an upper beam 2 and a base 3. The wall body 1 includes a plurality of cross-shaped wall bricks 101 and a plurality of convex wall bricks 102. The upper beam 2 includes a plurality of beam walls 201 and two first slope strips 202;

[0034] The base 3 is arranged in the foundation soil;

[0035] The wall body 1 is assembled by a plurality of cross-shaped wall bricks 101 and a plurality of convex wall bricks 102. The bottom of the wall body 1 is connected to the top of the base 3, and the top of the wall body 1 is connected to the bottom of the upper beam 2.

[0036] The wall body 1, the upper beam 2 and the base 3 are connected and fixed by a plurality of fixing mechanisms. The fixing mechanism includes a limiting steel pipe 4, multiple groups of limiting insertion blocks 5, a first steel bar 6, a plurality of extrusion blocks 7, three second steel bars 8, three through holes 9 and fixing bolts 10. An opening one is opened on the beam wall 201, an opening two is opened on the cross-shaped wall brick 101, an opening three is opened on the convex wall brick 102, and an opening four is opened on the base 3.

[0037] The opening one, the opening two, the opening three and the opening four are communicated. The limiting steel pipe 4 passes through the opening one, the opening two and the opening three and extends into the opening four. A plurality of groups of through openings are opened on the limiting steel pipe 4, and the plurality of groups of through openings are respectively located in the opening one on the beam wall 201, the opening two on the cross-shaped wall brick 101, the opening three on the convex wall brick 102 and the opening four on the base 3.

[0038] There are gaps between the first opening, the second opening, the third opening, and the fourth opening and the limiting steel pipe 4. Concrete is poured into the gaps and the limiting steel pipe 4. A group of limiting slots are provided on the inner walls of the first opening, the second opening, the third opening, and the fourth opening. The multiple groups of limiting slots respectively correspond to multiple groups, and the through openings of the multiple limiting slots correspond one by one. Multiple groups of limiting blocks 5 are respectively movably installed on the multiple through openings, and the multiple groups of limiting slots are respectively adapted to the multiple groups of limiting blocks 5.

[0039] The first reinforcing bar 6 is installed in the limiting steel pipe 4. Multiple extrusion blocks 7 are all installed in the limiting steel pipe 4. Multiple extrusion blocks 7 are all fixedly connected to the first reinforcing bar 6. Multiple extrusion blocks 7 are respectively adapted to multiple groups of limiting blocks 5. Three second reinforcing bars 8 are arranged in a triangular array to surround and install the first reinforcing bar 6 on the extrusion blocks 7. Three through holes 9 are arranged in a triangular array on the extrusion blocks 7. The fixing bolt 10 is installed in the limiting steel pipe 4. The fixing bolt 10 is fixedly connected to the top ends of the first reinforcing bar 6 and the three second reinforcing bars 8.

[0040] Slope strips 202 are provided on the outer walls on both sides of the wall body 1. The two slope strips 202 are both connected to the bottoms of multiple beam walls 201. Slope strips 301 are provided on the outer walls on both sides of the 001. The two slope strips 301 are both connected to the top of the base 3.

[0041] The slope strip 202 is used to guide rainwater drainage and reduce the water accumulation pressure at the top of the wall body. The base 3 is buried in the foundation soil and is poured with C30 concrete. A 2:8 lime soil cushion is set on the bottom surface with a thickness of 0.3 m, so that the bearing capacity of the foundation can be improved.

[0042] First, the base 3 is buried in the foundation soil as the foundation support of the entire retaining wall structure. A slope strip 301 is provided on the top of the base 3 for connecting with the bottom of the wall body 1 to form a stable foundation connection surface. The wall body 1 is modularly assembled by cross-shaped wall bricks 101 and convex-shaped wall bricks 102 through preset openings (the second opening, the third opening). The special shape design (cross-shaped, convex-shaped) of these wall bricks enables the wall body to flexibly adapt to the processing requirements of different sides and inclination angles, realizing the adaptation to complex terrains or installation environments. Place the beam wall 201 of the upper beam 2 on the top of the wall body 1. The slope strip 202 at the bottom of the beam wall 201 fits with the outer walls on both sides of the wall body 1 to form a transition connection structure, ensuring the stable docking of the upper beam and the wall body.

[0043] The limiting steel pipe 4 sequentially passes through the first opening of the beam wall 201, the second opening of the cross-shaped wall brick 101, the third opening of the convex-shaped wall brick 102, and extends into the fourth opening of the base 3 to form a longitudinal support axis passing through the upper beam, the wall body, and the base. A gap is reserved between each opening and the limiting steel pipe to provide space for subsequent concrete pouring.

[0044] At multiple through openings of the limiting steel pipe 4, limiting insertion blocks 5 are installed. These insertion blocks are adapted to the limiting slots on the inner wall of the opening. After insertion, they can limit the lateral displacement of the steel pipe and provide an anchoring point for the solidification of concrete. The first steel bar 6 passes through the limiting steel pipe 4, and its periphery is connected to the extrusion block 7 through the second steel bars 8 distributed in a triangular array to form a three-dimensional support framework. The fixing bolts 10 are fixed to the top ends of the first steel bar 6 and the second steel bars 8, and the forces of each component are transmitted to the base through the steel bar structure, enhancing the overall uplift and shear resistance performance.

[0045] Concrete is poured into the voids and the limiting steel pipe 4. After solidification, a rigid connection body is formed, and the upper beam, wall, base, and fixing mechanism are solidified into a unified stress-bearing structure, ensuring that each component jointly bears the lateral earth pressure and external loads. The first slope strips 202 on both sides of the wall and the second slope strips 301 of the base can adjust the inclination angle according to the actual engineering requirements, enabling the retaining wall to adapt to the slope support of different terrains. When the wall bears the lateral pressure, the load is transmitted to the limiting steel pipe and the steel bar structure through the splicing surface of the cross-shaped wall bricks and the convex-shaped wall bricks, and then dispersed to the foundation soil through the base, forming a stable force conduction path.

[0046] The present invention also provides a construction method for a complex reinforced retaining wall structure, including the following construction steps:

[0047] S1. Foundation treatment: Excavate the foundation trench, backfill with 3:7 lime soil to the design elevation, compact in layers, with the compaction degree ≥ 95%, pour a C30 concrete base, and reserve 8 Φ150mm PVC test holes;

[0048] S2. Wall assembly: Install cross-shaped wall bricks and convex-shaped wall bricks on the first layer. Pass the limiting steel pipe through the openings of each component, insert the first steel bar and the second steel bars, and finally inject C30 fine aggregate concrete for fixation. The bolt torque is controlled at 80 - 100 N·m;

[0049] S3. Upper beam installation: Connect the beam wall and the top of the wall through the first slope strip, fix with M16 bolts, and fill the joint with an elastic sealing material.

[0050] For each layer of the layered compaction, the paving thickness is 25 cm. After compaction for 6 - 8 times, the sand replacement method is used to detect the compaction degree, and the measured value is ≥ 93%.

[0051] The model of the limiting steel pipe is Φ80mm, and the models of the first steel bar and the second steel bars are Φ20mm and Φ16mm respectively.

[0052] As mentioned above, the above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. A complex reinforced retaining wall structure, characterized in that Comprising: A wall, an upper beam and a base. The wall includes a plurality of cross-shaped wall bricks and a plurality of convex wall bricks. The upper beam includes a plurality of beam walls and two slope strips one. The base is arranged in the foundation soil. The wall is assembled by a plurality of cross-shaped wall bricks and a plurality of convex wall bricks. The bottom of the wall is connected to the top of the base, and the top of the wall is connected to the bottom of the upper beam.

2. The complex reinforced retaining wall structure according to claim 1, characterized in that: The wall, the upper beam and the base are connected and fixed by a plurality of fixing mechanisms. The fixing mechanism includes a limiting steel pipe, multiple groups of limiting insertion blocks, a steel bar one, a plurality of extrusion blocks, three steel bars two, three through holes and fixing bolts. An opening one is formed on the beam wall, an opening two is formed on the cross-shaped wall brick, an opening three is formed on the convex wall brick, and an opening four is formed on the base.

3. The complex reinforced retaining wall structure according to claim 2, wherein: The opening one, the opening two, the opening three and the opening four are communicated with each other. The limiting steel pipe passes through the opening one, the opening two and the opening three and extends into the opening four. A plurality of groups of through openings are formed on the limiting steel pipe, and the plurality of groups of through openings are respectively located in the opening one on the beam wall, the opening two on the cross-shaped wall brick, the opening three on the convex wall brick and the opening four on the base.

4. The complex reinforced retaining wall structure according to claim 3, wherein: There are gaps between the opening one, the opening two, the opening three, the opening four and the limiting steel pipe. Concrete is poured into the gaps and the limiting steel pipe. A group of limiting slots are formed on the inner walls of the opening one, the opening two, the opening three and the opening four. The plurality of groups of limiting slots respectively correspond to the plurality of groups of through openings one by one. The plurality of groups of limiting insertion blocks are respectively movably installed on the plurality of groups of through openings, and the plurality of groups of limiting slots are respectively adapted to the plurality of groups of limiting insertion blocks.

5. The complex reinforced retaining wall structure according to claim 2, characterized in that: The steel bar one is installed in the limiting steel pipe. The plurality of extrusion blocks are all installed in the limiting steel pipe. The plurality of extrusion blocks are all fixedly connected to the steel bar one. The plurality of extrusion blocks are respectively adapted to the plurality of groups of limiting insertion blocks. The three steel bars two are arranged in a triangular array to surround and install the steel bar one on the extrusion blocks. The three through holes are arranged in a triangular array on the extrusion blocks. The fixing bolt is installed in the limiting steel pipe. The fixing bolt is fixedly connected to the top ends of the steel bar one and the three steel bars two.

6. The complex reinforced retaining wall structure according to claim 1, characterized in that: Slope strips one are arranged on the outer walls on both sides of the wall. The two slope strips one are both connected to the bottoms of the plurality of beam walls. Slope strips two are arranged on the outer walls on both sides. The two slope strips two are both connected to the top of the base.

7. The complex reinforced retaining wall structure according to claim 1, wherein: The slope strips one are used to guide rainwater drainage and reduce the water accumulation pressure at the top of the wall. The base is buried in the foundation soil and is poured with C30 concrete. A 2:8 lime soil cushion is arranged at the bottom with a thickness of 0.3m, so the bearing capacity of the foundation can be improved.

8. A construction method for a complex reinforced retaining wall structure, characterized in that, Comprising the complex reinforced retaining wall structure as described in claim 1 and the following construction steps: S1. Foundation treatment: Excavate the foundation trench, backfill 3:7 lime soil to the design elevation, compact it in layers, with the compaction degree ≥ 95%, pour the C30 concrete base, and reserve 8 Φ150mm PVC test holes. S2. Wall assembly: Install the cross-shaped wall bricks and the convex wall bricks on the first layer. Pass the limiting steel pipe through the openings of each component, insert the steel bar one and the steel bars two, and finally inject C30 fine aggregate concrete for fixing. The bolt torque is controlled at 80 - 100 N·m. S3. Installation of the upper beam: The beam wall is connected to the top of the wall through the first purlin and fixed with M16 bolts. The joint is filled with elastic sealing material.

9. The construction method of the complex reinforced retaining wall structure according to claim 8, characterized in that: For each layer of the layered rolling, the paving thickness is 25 cm. After rolling 6 - 8 times, the sand replacement method is used to detect the compaction degree, and the measured values are all ≥ 93%.

10. The complex reinforced retaining wall structure and its construction method according to claim 1, characterized in that: The model of the limiting steel pipe is Φ80mm, and the models of the first steel bar and the second steel bar are Φ20mm and Φ16mm respectively.

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