Slope top house foundation reinforcing structure suitable for being close to railroad bed

Abstract

The utility model relates to a slope top house foundation reinforcing structure suitable for being close to a railroad bed, which comprises a current masonry retaining wall arranged on one side of a current railroad bed, and a cantilever retaining wall arranged on one side, close to the current railroad bed, of the current masonry retaining wall. Concrete is filled between the cantilever type retaining wall and the current masonry retaining wall, a plurality of rows of grouting steel floral tubes are arranged in a soil body between the current masonry retaining wall and the current building foundation, cement paste is injected into the grouting steel floral tubes, and a water drain pipe is buried in the current masonry retaining wall in a penetrating mode. According to the utility model, the current masonry retaining wall is arranged, and a plurality of rows of grouting steel floral tubes are arranged in the soil body between the current masonry retaining wall and the current building foundation and are grouted, so that the physical and mechanical properties of the current masonry retaining wall and the soil body of the house foundation are improved; the anti-sliding capacity of the current masonry retaining wall, the wall body structural strength and the stability of a house foundation are enhanced, so that the house foundation is reinforced, and the safety, stability and reliability of a railway line are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of house foundation reinforcement, in particular to a foundation reinforcement structure for houses on slope tops close to railway subgrades. Background Art

[0002] Masonry retaining walls are widely used in slope protection structures due to their availability of locally available materials, ease of construction, and low cost. Railways are often lined with numerous buildings, some of which are located above the railway subgrade. Masonry retaining walls are often used for slope protection. However, over time, due to adverse effects such as ground overload and rainwater erosion, these walls can experience slippage, tilting, cracking, and water seepage. These defects can affect slope stability, building safety, and the safe operation of the railway line, necessitating reinforcement of existing masonry retaining walls and building foundations.

[0003] For masonry retaining walls that have been in service for a certain period of time, solutions such as increasing wall thickness, anchor reinforcement, and grouting are commonly used. However, due to the proximity to existing railway subgrades and existing buildings, these solutions all have limitations. For example, increasing wall thickness requires a large amount of space, and some of the load from the reinforced structure will be transferred to the railway subgrade, potentially adversely affecting it. Anchor reinforcement generally requires ample working space, which can affect railway operations, and anchor construction can disturb existing building foundations. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a foundation reinforcement structure suitable for houses on sloped roofs close to railway subgrades in view of the deficiencies of the above-mentioned prior art.

[0005] The technical solution of the utility model for solving the above-mentioned technical problems is as follows: a foundation reinforcement structure suitable for houses on slope roofs near railway embankments, applied between the existing railway embankment and the existing building foundation outside the existing railway embankment, including an existing masonry retaining wall arranged on the side of the existing railway embankment close to the existing building foundation, a cantilever retaining wall arranged on the side of the existing masonry retaining wall close to the existing railway embankment, concrete filled between the cantilever retaining wall and the existing masonry retaining wall, a plurality of rows of grouting steel flower pipes arranged in the soil between the existing masonry retaining wall and the existing building foundation, cement slurry injected into the grouting steel flower pipes, and a drainage pipe buried through the existing masonry retaining wall.

[0006] The beneficial effects of the present invention are as follows: the present invention is applicable to the foundation reinforcement structure of the house on the slope top adjacent to the railway embankment, by arranging the existing masonry retaining wall on one side of the existing railway embankment, and arranging multiple rows of grouting steel flower pipes in the soil between the existing masonry retaining wall and the existing building foundation and grouting, thereby improving the physical and mechanical properties of the soil behind the existing masonry retaining wall and the house foundation, enhancing the anti-slip ability of the existing masonry retaining wall, the wall structure strength and the stability of the house foundation, thereby reinforcing the house foundation and ensuring the safety of the railway line, having the advantages of a clear force system, a simple construction method, a small footprint and little disturbance, and the reinforced structure is stable and reliable.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows:

[0008] Further: the cantilever retaining wall includes a vertical plate, a pedestal and multiple rows of micro pile foundations, the pedestal is arranged on the soil surface on one side of the existing masonry retaining wall close to the existing railway subgrade, the vertical plate is arranged on the pedestal, and the gap between the vertical plate and the existing masonry retaining wall is filled with concrete, multiple rows of micro pile foundations are arranged in the soil below the pedestal, and the upper ends of the micro pile foundations are connected to the pedestal.

[0009] The beneficial effect of the above further scheme is that by setting up multiple rows of the micro-pile foundations, the base can be supported and fixed, and the vertical plates can limit and fix the existing masonry retaining wall, thereby enhancing the anti-slip ability of the existing masonry retaining wall, thereby ensuring the structural strength of the wall and the stability of the house foundation.

[0010] Further: the vertical plate and the base are reinforced concrete structures.

[0011] The beneficial effect of the above further solution is that the use of reinforced concrete structures for the vertical slabs and the pedestal can ensure their structural strength, thereby ensuring the reinforcement stability of the foundation of the entire slope roof house.

[0012] Furthermore: the vertical plate and the supporting platform are respectively prefabricated components.

[0013] The beneficial effects of the above further scheme are: the vertical plates and the pedestals are made of prefabricated components, which have a high degree of standardization, reliable construction quality, a high template reuse rate, and a fast on-site assembly construction speed, thereby shortening the construction period, reducing construction costs, and reducing the impact on the operation of the railway line.

[0014] Furthermore: multiple rows of the micro pile foundations are arranged in a staggered plane, the micro pile foundations use steel pipe piles, and the steel pipe piles are filled with cement slurry or cement mortar.

[0015] The beneficial effect of the above further scheme is that by arranging multiple rows of micropile foundations in a staggered plane, the force uniformity of the entire micropile foundation can be enhanced, and the stability of the entire cantilever retaining wall can be ensured. The use of steel pipe piles and pouring cement slurry or cement mortar can effectively ensure the structural strength of the entire micropile foundation.

[0016] Further: the drain pipe extends and passes through the vertical plate.

[0017] The beneficial effect of the above further solution is that by extending the drain pipe and passing through the vertical plate, groundwater can be discharged in time through the drain pipe, thereby ensuring the stability of the slope soil.

[0018] Further: the spacing between the grouting steel flower pipes is 1.0-1.5 meters, and the grouting steel flower pipes are seamless steel pipes.

[0019] The beneficial effects of the above further scheme are: setting a reasonable spacing between grouting steel flower pipes can, on the one hand, ensure their fixing effect on the soil, and on the other hand, effectively reduce material costs. At the same time, the use of seamless steel pipes can avoid corrosion and extend service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a foundation reinforcement structure for a house on a sloped roof near a railway embankment according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic plan view of a cantilever retaining wall according to an embodiment of the present invention.

[0022] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0023] 1. Existing building foundation, 2. Existing masonry retaining wall, 3. Vertical slab, 4. Plinth, 5. Micro pile foundation, 6. Concrete, 7. Drain pipe, 8. Grouting steel pipe, 9. Existing railway subgrade. DETAILED DESCRIPTION

[0024] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0025] like Figure 1As shown, a foundation reinforcement structure suitable for houses on sloped roofs near railway embankments is applied between an existing railway embankment 9 and an existing building foundation 1 on its outside, including an existing masonry retaining wall 2 arranged on the side of the existing railway embankment 9 close to the existing building foundation 1, a cantilever retaining wall arranged on the side of the existing masonry retaining wall 2 close to the existing railway embankment 9, concrete 6 is filled between the cantilever retaining wall and the existing masonry retaining wall 2, multiple rows of grouting steel flower pipes 8 are arranged in the soil between the existing masonry retaining wall 2 and the existing building foundation 1, cement slurry is injected into the grouting steel flower pipes 8, and a drainage pipe 7 is buried through the existing masonry retaining wall 2.

[0026] The utility model is suitable for the foundation reinforcement structure of the house on the top of the slope adjacent to the railway embankment. By setting the existing masonry retaining wall 2 on one side of the existing railway embankment 9, and setting multiple rows of grouting steel flower pipes 8 in the soil between the existing masonry retaining wall 2 and the existing building foundation 1 and grouting, the physical and mechanical properties of the soil behind the existing masonry retaining wall 2 and the house foundation are improved, the anti-slip ability of the existing masonry retaining wall 2, the wall structure strength and the stability of the house foundation are enhanced, thereby reinforcing the house foundation and ensuring the safety of the railway line. It has the advantages of a clear force system, a simple construction method, a small footprint and little disturbance, and the reinforced structure is stable and reliable.

[0027] In one or more embodiments of the present invention, the cantilever retaining wall includes a vertical plate 3, a cap 4, and multiple rows of micropile foundations 5. The cap 4 is disposed on the soil surface on one side of the existing masonry retaining wall 2 near the existing railway embankment 9. The vertical plate 3 is disposed on the cap 4, and the gap between the vertical plate 3 and the existing masonry retaining wall 2 is filled with concrete 6. Multiple rows of micropile foundations 5 are disposed in the soil below the cap 4, with the upper ends of the micropile foundations 5 connected to the cap 4. The multiple rows of micropile foundations 5 support and secure the cap 4, and the vertical plate 3 can limit and secure the existing masonry retaining wall 2, thereby enhancing the anti-slip capability of the existing masonry retaining wall 2 and ensuring the strength of the wall structure and the stability of the building foundation.

[0028] In one or more embodiments of the present invention, the vertical plate 3 and the pedestal 4 are reinforced concrete structures. The use of the vertical plate 3 and the pedestal 4 of the reinforced concrete structure can ensure their structural strength, thereby ensuring the reinforcement stability of the foundation of the entire slope roof house.

[0029] In one or more embodiments of the present invention, the vertical plate 3 and the pedestal 4 are prefabricated components. Prefabricated components offer a high degree of standardization, reliable construction quality, a high template reuse rate, and rapid on-site assembly, thereby shortening construction time, reducing construction costs, and minimizing impact on railway operations.

[0030] In one or more embodiments of the present invention, multiple rows of micropile foundations 5 are arranged in a staggered planar configuration. The micropile foundations 5 utilize steel pipe piles filled with cement slurry or cement mortar. This staggered arrangement of the multiple rows of micropile foundations 5 enhances the uniformity of force applied to the entire micropile foundation 5, ensuring the stability of the entire cantilever retaining wall. The use of steel pipe piles and the injection of cement slurry or cement mortar effectively ensures the structural strength of the entire micropile foundation 5.

[0031] Optionally, in one or more embodiments of the present invention, the drain pipe 7 extends and passes through the vertical plate 3. By extending the drain pipe 7 and passing through the vertical plate 3, groundwater can be discharged in a timely manner through the drain pipe 7, thereby ensuring the stability of the slope soil.

[0032] In practice, the drain pipe 7 is made of PVC.

[0033] In one or more embodiments of the present invention, the spacing between the grouting steel flower tubes 8 is 1.0-1.5 meters, and the grouting steel flower tubes 8 are seamless steel pipes. Proper spacing between the grouting steel flower tubes 8 not only ensures their ability to secure the soil, but also effectively reduces material costs. Furthermore, the use of seamless steel pipes prevents corrosion and extends service life.

[0034] The construction method of the utility model for the foundation reinforcement structure of a house on a slope top near a railway subgrade is as follows:

[0035] 1. Construct micro pile foundation 5 on the outside of the existing retaining wall 2 using static pressure method;

[0036] 2. Clean and roughen the outer surface of the existing retaining wall 2;

[0037] 3. Construction of foundation 4;

[0038] 4. Construct the steel bars and formwork of the vertical plate 3, and extend the drain pipe 7, pour the concrete of the vertical plate 4, and remove the formwork after solidification;

[0039] 5. Pour filling concrete 6;

[0040] 6. Install multiple groups of grouting steel pipes 8 between the existing masonry retaining wall 2 and the existing building foundation 1 for grouting reinforcement.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A foundation reinforcement structure for a house on a sloped roof adjacent to a railway embankment, applied between an existing railway embankment (9) and an existing building foundation (1) outside the embankment, characterized by: The present invention comprises: an existing masonry retaining wall (2) is arranged on one side of the existing railway roadbed (9) close to the existing building foundation (1); a cantilever retaining wall is arranged on the one side of the existing masonry retaining wall (2) close to the existing railway roadbed (9); concrete (6) is filled between the cantilever retaining wall and the existing masonry retaining wall (2); multiple rows of grouting steel flower pipes (8) are arranged in the soil between the existing masonry retaining wall (2) and the existing building foundation (1); cement slurry is injected into the grouting steel flower pipes (8); and a drainage pipe (7) is buried through the existing masonry retaining wall (2).

2. The foundation reinforcement structure for a house on a sloped roof near a railway embankment according to claim 1 is characterized in that: The cantilever retaining wall comprises a vertical plate (3), a cap (4) and multiple rows of micro pile foundations (5); the cap (4) is arranged on the soil surface on one side of the existing masonry retaining wall (2) close to the existing railway roadbed (9); the vertical plate (3) is arranged on the cap (4), and the gap between the vertical plate (3) and the existing masonry retaining wall (2) is filled with concrete (6); multiple rows of micro pile foundations (5) are arranged in the soil below the cap (4), and the upper ends of the micro pile foundations (5) are connected to the cap (4).

3. The foundation reinforcement structure for a house on a sloped roof near a railway embankment according to claim 2 is characterized in that: The vertical plate (3) and the supporting platform (4) are reinforced concrete structures.

4. The foundation reinforcement structure for a house on a sloped roof near a railway embankment according to claim 3 is characterized in that: The vertical plate (3) and the supporting platform (4) are respectively made of prefabricated components.

5. The foundation reinforcement structure for a house on a sloped roof near a railway embankment according to claim 2 is characterized in that: Multiple rows of micro pile foundations (5) are arranged in a staggered plane. The micro pile foundations (5) are steel pipe piles, and the steel pipe piles are filled with cement paste or cement mortar.

6. The foundation reinforcement structure for a house on a sloped roof near a railway embankment according to claim 2 is characterized in that: The drain pipe (7) extends and passes through the vertical plate (3).

7. The foundation reinforcement structure for a house on a sloped roof adjacent to a railway embankment according to any one of claims 1 to 6, characterized in that: The spacing between the grouting steel flower pipes (8) is 1.0-1.5 meters, and the grouting steel flower pipes (8) are seamless steel pipes.

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