Composite pile foundation structure for soft soil foundation reinforcement

Abstract

The utility model discloses a composite pile foundation structure for soft soil foundation reinforcement relates to the field of foundation reinforcement, including a plurality of according to rectangular array set up in the hole in the soil layer, the hole is filled with filling material, vertical insertion has the cylinder stake in the filling material, the cylinder stake surface is equally spaced and is provided with a plurality of roof support assemblies along the vertical direction for compressing filling material. Advantageous effect lies in: through conventional process ramming filling material in the hole, preliminary promotion compactness inserts cylinder stake, further extruding filling material by using cylinder stake dead weight and external pressure, reduce the clearance of filling material and hole wall, through the roof bar from top to bottom unfolding roof support assembly, the arc plate is radially extended with the slide bar, and the annular extrusion is formed to filling material, and the compactness of filling material is promoted.

Claims

1. A composite pile foundation structure for soft soil foundation reinforcement, characterized in that: It includes several holes (1) opened in the soil layer in a rectangular array, the holes (1) are filled with filler material (2), and a cylindrical pile (3) is vertically inserted into the filler material (2). Several top support components (4) are equidistantly arranged on the surface of the cylindrical pile (3) in the vertical direction for compressing the filler material (2). A top rod (5) is vertically inserted inside the pile (3) to unfold the top support assembly (4) from top to bottom, so that the top support assembly (4) squeezes the surrounding filler material (2).

2. The composite pile foundation structure for soft soil foundation reinforcement according to claim 1, characterized in that: The bottom of the cylindrical pile (3) is conical.

3. The composite pile foundation structure for soft soil foundation reinforcement according to claim 1, characterized in that: The surface of the cylindrical pile (3) is fixedly connected to a fixing plate (6), and the side of the fixing plate (6) is symmetrically fixedly connected to a lifting lug (8).

4. The composite pile foundation structure for soft soil foundation reinforcement according to claim 3, characterized in that: The top rod (5) includes a rod body (9), and a cone head (12) is fixedly connected to the lower end of the rod body (9).

5. The composite pile foundation structure for soft soil foundation reinforcement according to claim 4, characterized in that: The cone (12) is composed of a cone and a cylinder fixedly connected to the cone. The surface of the cone (12) is in clearance fit with the inner wall of the cylinder pile (3).

6. The composite pile foundation structure for soft soil foundation reinforcement according to claim 1, characterized in that: The top support assembly (4) includes several arc-shaped plates (13) arranged in a ring. A sliding rod (14) is fixedly connected to the arc-shaped plate (13) radially along the cylinder pile (3). The sliding rod (14) passes through the cylinder pile (3).

7. The composite pile foundation structure for soft soil foundation reinforcement according to claim 6, characterized in that: The end of the slide bar (14) inserted into the cylinder pile (3) is arc-shaped.

8. The composite pile foundation structure for soft soil foundation reinforcement according to claim 7, characterized in that: The surface of the arc plate (13) is flush with the surface of the cylinder pile (3).

9. The composite pile foundation structure for soft soil foundation reinforcement according to claim 4, characterized in that: The upper end of the rod (9) is fixedly connected to a fixing plate two (10), and the bottom of the fixing plate two (10) is fixedly connected to a lifting lug two (11).

10. The composite pile foundation structure for soft soil foundation reinforcement according to claim 3, characterized in that: The fixing plate (6) has several through holes (7).

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