Embankment toe reinforcement structure

Abstract

The utility model discloses a kind of embankment toe reinforcing structures, solid angle support pier is arranged in the longitudinal parallel and evenly spaced of embankment toe along the outer side below embankment soil body, support pier reserved hole is arranged in the foundation soil body below embankment soil body, vertical support pile is inserted in support pier reserved hole;Solid angle support plate is mounted at the embankment toe of embankment slope surface flat layer, the inner surface of solid angle support plate is equipped with tenon, tenon is connected with the embedded groove being equipped on embankment soil body and solid angle support pier, and board top sand bag is arranged in the top embankment soil body groove of inclined plate, and sand bag filling body is mounted in board top sand bag;Vertical support pile and inclined support pile respectively fill first filling core and second filling core with being poured into in it.The utility model effectively improves the stability of solid angle support plate, and enhances the scouring resistance of embankment soil body.

Description

Technical Field

[0001] This utility model relates to embankment slope structure, and is applicable to embankment slope stability improvement technology, and particularly relates to an embankment slope toe reinforcement structure. Background Technology

[0002] The stability of embankment slopes is significantly affected by the bearing capacity of the embankment toe and the erosion and infiltration of rainwater. Improving the stability and erosion resistance of the embankment toe helps to strengthen the embankment toe.

[0003] An existing embankment slope reinforcement structure involves constructing reinforcing piers along the longitudinal direction of the embankment at the toe of the slope, and installing drainage ditches on the tops of adjacent reinforcing piers. The soil at the toe above the reinforcing piers is then solidified to form a stabilized toe soil. While this structure, with its reinforcing piers and stabilized toe soil, can enhance the stability of the toe, it struggles to address issues such as overall reinforcement of the toe area and improved construction efficiency. Summary of the Invention

[0004] In view of the above, in order to improve the stability of the embankment slope toe, this utility model provides an embankment slope toe reinforcement structure that can improve the overall structural stability, construction quality and efficiency, so as to improve the erosion resistance of the embankment slope toe, enhance the stability of the embankment slope and improve the erosion resistance of the embankment.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution. A road embankment toe reinforcement structure comprises longitudinally parallel and evenly spaced corner bracing piers along the outer side of the road embankment soil at the toe of the road embankment. Pre-drilled holes for the corner bracing piers are provided in the foundation soil beneath the road embankment soil, and vertical support piles are inserted into these holes. An interface adhesive is provided on the upper surface of the corner bracing piers. Corner bracing plates are installed at the toe of the road embankment at the level of the road embankment slope. Each corner bracing plate includes a transverse plate and an inclined plate. A tenon is provided on the inner surface of the corner bracing plate, and the tenon connects to the embankment soil and the embedding grooves provided on the corner bracing piers. Inclined support piles are inserted into the inclined plate and into the road embankment soil, and into the transverse plate and into the foundation soil, respectively. Sandbags are placed in the top road embankment soil groove of the inclined plate, and the sandbags are filled with sandbag fillers. A first filler and a second filler are respectively injected into the vertical support piles and the inclined support piles.

[0006] Furthermore, the corner bracing pier is cylindrical, frustum-shaped, square column-shaped, or prismatic, and the corner bracing pier has a pre-drilled vertical support hole. The top surface of the corner bracing pier is provided with a locking groove for connection with the tenon. Preferably, when the corner bracing pier is frustum-shaped or prismatic, it is inserted into the foundation soil in an inverted trapezoidal shape.

[0007] Furthermore, the slope of the inclined plate is the same as the slope of the embankment soil, and it is provided with through holes for inserting inclined support piles.

[0008] Furthermore, the transverse plate corresponds to the upper plane of the foundation soil and is provided with through holes for inserting vertical support piles.

[0009] Furthermore, the sandbags on the top of the slab are geotextile bags, and the filling material inside the sandbags is gravel, sand and gravel, or a mixture of both.

[0010] Furthermore, both the vertical and inclined support piles are steel pipes, and grout overflow holes are pre-set on the pipe walls of both the vertical and inclined support piles. The top of the vertical support pile is connected to the horizontal plate by bolts, and the top of the inclined support pile is connected to the inclined plate by bolts.

[0011] This invention incorporates corner bracing plates at the toe of the embankment slope, along with corner bracing piers and vertical support piles in the transverse sections and inclined support piles in the inclined sections, effectively enhancing the stability of the corner bracing plates. First and second filler cores are simultaneously injected into the vertical and inclined support piles to reinforce the foundation and enhance its stability. A trench is excavated at the top of the corner bracing plates to accommodate sandbags and sandbag fillers, further improving the erosion resistance of the embankment soil. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the transverse cross-section structure of this utility model.

[0013] In the diagram: 1-embankment soil, 2-corner bracing pier, 3-vertical support pile, 4-support pier reserved hole, 5-foundation soil, 6-interface bonding body, 7-slope leveling layer, 8-corner bracing plate, 9-tenon, 10-embedding groove, 11-inclined support pile, 12-sandbag on top of plate, 13-sandbag filling body, 14-first core filler, 15-second core filler, 16-transverse plate, 17-inclined plate, 18-grout overflow hole. Detailed Implementation

[0014] The technical requirements for steel pipe rolling and welding construction, the construction technology for the preparation of corner bracing piers and corner bracing plates, and the technical requirements for on-site excavation construction are not repeated in this embodiment. The focus is on describing the implementation method of the structure involved in this utility model.

[0015] Reference Figure 1As shown, the embankment slope toe reinforcement structure of this utility model involves digging pits at uniform intervals along the longitudinal direction of the embankment soil 1 at the embankment slope toe and arranging fixed corner bracing piers 2, and inserting vertical support piles 3 into the foundation soil 5 along the reserved holes 4 of the support piers; firstly, an interface bonding body 6 is set on the upper surface of the fixed corner bracing piers 2, and a slope leveling layer 7 is laid on the embankment slope surface; then, the fixed corner bracing plate 8 is hoisted to the embankment slope toe using external hoisting equipment, and the protruding tenon 9 on the lower surface of the fixed corner bracing plate 8 is connected to the embedding groove 10; then, inclined support piles 11 are inserted from the fixed corner bracing plate 8 into the embankment soil 1 and the foundation soil 5; a groove is dug at the top of the fixed corner bracing plate 8 to arrange the top sandbags 12, and sandbag fillers 13 are filled in the top sandbags 12; the first filler 14 and the second filler 15 are injected into the vertical support piles 3 and the inclined support piles 11 respectively using external grouting equipment.

[0016] The embankment soil 1 is sandy soil with a compaction degree of 93%. At the toe of the embankment slope, evenly spaced pits are excavated along the longitudinal direction of the embankment soil 1 to install corner bracing piers 2. The corner bracing piers 2 are made of reinforced concrete, cylindrical in shape, with a top diameter of 1m and a bottom diameter of 0.5m. Vertical pre-drilled holes 4, each with a diameter of 0.3m, are pre-drilled inside the corner bracing piers 2. An embedding groove 10, shaped like an inverted trapezoid, is provided on the top surface of the corner bracing piers 2 to connect with a tenon 9 and is inserted into the foundation soil 5. The embedding groove 10 has a diameter of 10cm.

[0017] Both the vertical support pile 3 and the inclined support pile 11 are made of steel pipe with a diameter of 250mm. Grout overflow holes 18 are pre-set on the pipe wall of the vertical support pile 3 and the inclined support pile 11. The diameter of the grout overflow holes 18 is 5cm.

[0018] The vertical support pile 3 is inserted into the foundation soil 5 along the reserved hole 4 of the support pier. The foundation soil 5 is plastic cohesive soil.

[0019] An interface adhesive 6 is provided on the upper surface of the fixed corner support pier 2. The interface adhesive 6 is made of cement mortar with a grade of M20.

[0020] A slope leveling layer 7 is laid on the embankment slope, and the slope leveling layer 7 is made of medium-coarse sand.

[0021] The corner brace 8 is prefabricated as a whole using reinforced concrete with a concrete strength grade of C30. It includes a horizontal plate 16 and a diagonal plate 17. A tenon 9 is provided on the lower surface of the corner brace 8. The tenon 9 has a diameter of 10cm and a height of 5cm.

[0022] External hoisting equipment is used to hoist the corner brace 8 to the toe of the embankment slope, and the tenon 9 on the lower surface of the corner brace 8 is connected to the locking groove 10.

[0023] A trench is dug at the top of the corner bracing plate 8 to install sandbags 12. The sandbags 12 are made of geotextile woven bags and are filled with gravel to form a sandbag filling body 13.

[0024] External grouting equipment is used to inject C30 strength grade grout into the vertical support pile 3 and the inclined support pile 11 respectively to form the first core filler 14 and the second core filler 15.

[0025] The corner bracing plate 8 installed at the toe of the embankment effectively improves the stability at the toe. The first filler core 14 and the second filler core 15 are poured into the vertical support piles 3 and the inclined support piles 11, which can simultaneously play a role in foundation reinforcement. The top of the corner bracing plate 8 is grooved and sandbags 12 and sandbag fillers 13 are placed on top of the plate to enhance the erosion resistance of the embankment soil 1.

Claims

1. A road embankment toe reinforcement structure, characterized in that, Longitudinal parallel and evenly spaced corner bracing piers (2) are provided along the outer side of the embankment soil (1) below the embankment slope toe. Pre-drilled holes (4) for the bracing piers are provided in the foundation soil (5) below the embankment soil (1), and vertical support piles (3) are inserted into the pre-drilled holes (4). An interface bonding body (6) is provided on the upper surface of the corner bracing piers (2). Corner bracing plates (8) are installed at the embankment slope toe of the embankment slope level. The corner bracing plates (8) include a transverse plate (16) and an inclined plate (17). Tenons (9) are provided on the inner surface of the corner bracing plates (8). 9) Connected to the embedded groove (10) provided on the embankment soil (1) and the corner bracing pier (2), inclined support piles (11) are respectively inserted in the inclined plate (17) to the embankment soil (1) and in the transverse plate (16) to the foundation soil (5); sandbags (12) are arranged in the groove of the embankment soil (1) at the top of the inclined plate (17), and sandbag fillers (13) are filled in the sandbags (12); the first core filler (14) and the second core filler (15) are respectively poured into the vertical support pile (3) and the inclined support pile (11).

2. The embankment slope toe reinforcement structure according to claim 1, characterized in that, The corner bracing pier (2) is cylindrical, frustum, square column or prismatic. The corner bracing pier (2) has a pre-set vertical support hole (4). The top surface of the corner bracing pier (2) is provided with a mounting groove (10) that connects to the tenon (9). When the corner bracing pier (2) is frustum or prismatic, it is inserted into the foundation soil (5) in an inverted trapezoidal shape.

3. The embankment slope toe reinforcement structure according to claim 1, characterized in that, The slope of the inclined plate (17) is the same as the slope of the embankment soil (1), and it is provided with through holes for inserting inclined support piles (11).

4. The embankment slope toe reinforcement structure according to claim 1, characterized in that, The transverse plate (16) corresponds to the upper plane of the foundation soil (5) and is provided with through holes for inserting vertical support piles (3).

5. The embankment slope toe reinforcement structure according to claim 1, characterized in that, The sandbag (12) on the top of the plate is a geotextile bag, and the sandbag filling (13) inside it is gravel, sand and gravel or a mixture of both.

6. The embankment slope toe reinforcement structure according to claim 1, characterized in that, The vertical support pile (3) and the inclined support pile (11) are both steel pipes. Grout overflow holes (18) are pre-set on the pipe walls of both the vertical support pile (3) and the inclined support pile (11). The top of the vertical support pile (3) is connected to the horizontal plate (16) by bolts, and the top of the inclined support pile (11) is connected to the inclined plate (17) by bolts.

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