Vertical embankment structure and construction method thereof

Abstract

The invention discloses a vertical embankment structure, which relates to the field of water conservancy projects. The structure comprises a retaining wall located at the bottom of an upper road surface, a first cast-in-place pile and a second cast-in-place pile. The invention reduces the adverse effects on surrounding existing projects. The invention also relates to a construction method of the vertical embankment structure.

Description

Technical Field

[0001] The invention relates to the field of water conservancy projects, and more specifically to a vertical embankment structure. The invention also relates to a construction method of the vertical embankment structure. Background Art

[0002] When building a new embankment for a water conservancy project, the space is sometimes limited by the surrounding existing projects, and the embankment section cannot adopt the traditional slope embankment. It is necessary to adopt a vertical embankment structure in part or all of the line to reduce the adverse impact of the new embankment on the surrounding existing projects. For example, when building a new embankment between two existing bridge piers, the traditional slope embankment will have a greater adverse impact on the bridge piers due to the piled load of the embankment section.

[0003] Therefore, it is necessary to develop a vertical embankment structure. Summary of the invention

[0004] The first object of the present invention is to overcome the shortcomings of the above-mentioned background technology and provide a vertical embankment structure.

[0005] The second object of the present invention is to provide a construction method for such a vertical embankment structure.

[0006] In order to achieve the above-mentioned first purpose, the technical solution of the present invention is: an upright embankment structure, characterized in that it includes a retaining wall located at the bottom of the upper road surface, a plurality of first cast-in-place piles closely arranged on both sides of the bottom of the retaining wall, and a plurality of second cast-in-place piles arranged at intervals in the middle of the bottom of the retaining wall.

[0007] In the above technical solution, the gaps between the first cast-in-place piles are filled with film bag concrete caulking.

[0008] In the above technical solution, the membrane bag concrete is in an 8-shape.

[0009] In the above technical solution, there is first sand between the first cast-in-place pile and the second cast-in-place pile.

[0010] In the above technical solution, an anti-seepage wall is provided inside the first cast-in-place pile.

[0011] In the above technical solution, the top of the first sand is a grouting reinforcement layer.

[0012] In the above technical solution, the retaining wall is a U-shaped groove with second sand in the groove.

[0013] In the above technical solution, there are wave-breaking walls and inner railings on both sides of the upper road surface.

[0014] In the above technical solution, the wave-breaking wall is connected to the retaining wall.

[0015] In order to achieve the above second objective, the technical solution of the present invention is: a construction method of a vertical embankment structure, characterized in that it comprises the following steps:

[0016] Step 1: a plurality of first cast-in-place piles are closely arranged, and a plurality of second cast-in-place piles are spaced apart;

[0017] Step 2: Fill the gap between the first cast-in-place piles with film bag concrete;

[0018] Step 3: blowing and filling the first sand between the first cast-in-place pile and the second cast-in-place pile;

[0019] Step 4: High-pressure swing spraying of anti-seepage wall inside the first cast-in-place pile;

[0020] Step 5: Cast a retaining wall on top of the first cast-in-place pile and the second cast-in-place pile, and perform compaction grouting reinforcement on the first sand surface layer through the grouting holes on the bottom plate of the retaining wall to form a grouting reinforcement layer;

[0021] Step 6: Backfill the second sand soil in the retaining wall, set the upper road surface, wave-breaking wall and inner railing to complete the construction.

[0022] The present invention reduces the large cross-section of a traditional slope embankment into a vertical embankment cross-section structure less than 10m wide, which occupies a small space. The upper load of the vertical embankment is limited to the width of the embankment body and absorbed through the pile foundation. The horizontal load on the surrounding soil is not increased, thereby reducing the adverse impact on surrounding existing projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is a plan view of the present invention.

[0025] Figure 3 It is a schematic diagram of the structure of the first cast-in-place pile and membrane bag concrete in the present invention.

[0026] Figure 4 It is a schematic structural diagram of the anti-seepage wall and the first cast-in-place pile in the present invention. DETAILED DESCRIPTION

[0027] The following detailed description of the implementation of the present invention is made in conjunction with the accompanying drawings, but they do not constitute a limitation of the present invention and are only given as examples. At the same time, the advantages of the present invention will become clearer and easier to understand through the description.

[0028] Referring to the attached drawings, it can be seen that the vertical embankment structure includes a retaining wall 2 located at the bottom of the upper road surface 1, a plurality of first cast-in-place piles 31 closely arranged at both sides of the bottom of the retaining wall 2, and a plurality of second cast-in-place piles 32 arranged at intervals in the middle of the bottom of the retaining wall 2;

[0029] The gaps between the first cast-in-place piles 31 are filled with film bag concrete 33 .

[0030] The membrane bag concrete 33 is in an 8-shape.

[0031] There is first sand 34 between the first cast-in-place pile 31 and the second cast-in-place pile 32 .

[0032] An anti-seepage wall 35 is disposed inside the first cast-in-place pile 31 .

[0033] The top of the first sand 34 is a grouting reinforcement layer 341 .

[0034] The retaining wall 2 is a U-shaped groove with a second sand 21 in the groove and grouting holes on the bottom plate; the retaining wall 2 is a connecting link between the upper and lower parts of the embankment structure and is made of reinforced concrete.

[0035] The upper road surface 1 is provided with wave-breaking walls 11 and inner railings 12 on both sides.

[0036] The wave-breaking wall 11 is connected to the retaining wall 2 .

[0037] The construction method of the vertical embankment structure comprises the following steps:

[0038] Step 1: First, multiple first cast-in-place piles 31 are closely arranged according to the topographic and geological conditions, and multiple second cast-in-place piles 32 are arranged at intervals; due to the influence of the construction sleeve of the cast-in-place piles on water, a minimum gap of 10 cm will inevitably be generated between the first cast-in-place piles 31.

[0039] Step 2: After the pile foundation construction is completed and reaches the designed strength, the gaps between the first cast-in-place piles 31 are filled with film bag concrete 33. The film bag concrete 33 is in the shape of an "8", with large ends and a small middle, so as to better fit into the gaps between the first cast-in-place piles 31;

[0040] Step 3: After the gap between the first cast-in-place piles 31 is filled, the first sand 34 is blown in between the first cast-in-place piles 31 and the second cast-in-place piles 32;

[0041] Step 4: After the first sand 34 is consolidated, a high-pressure swing spraying anti-seepage wall 35 is implemented inside the first cast-in-place pile 31, and the swing spraying angle is specially adjusted, so as to fill the gaps between the first cast-in-place piles 31 on the one hand, and form a closed anti-seepage wall on the other hand;

[0042] Step 5: Cast the retaining wall 2 on top of the first cast-in-place pile 31 and the second cast-in-place pile 32, and perform compaction grouting reinforcement on the surface layer of the first sand 34 through the grouting holes on the bottom plate of the retaining wall 2 to form a grouting reinforcement layer 341;

[0043] Step 6: Backfill the second sand 21 in the retaining wall 2, set the upper road surface 1, the wave-breaking wall 11 and the inner railing 12, and complete the construction.

[0044] In actual use, the present invention reduces the large cross-section of a traditional sloped embankment to a vertical embankment cross-section structure less than 10m wide; it can be used where the cross-section space is limited and insufficient to adopt a large-section sloped embankment with slope reduction, and can also be used where the impact of the embankment load on existing buildings must be strictly controlled, such as where a new embankment passes under an existing cross-river bridge.

[0045] Other parts not described belong to the prior art.

Claims

1. A construction method for a vertical embankment structure, characterized in that: The upright embankment structure comprises a retaining wall (2) located at the bottom of the upper road surface (1), a plurality of first cast-in-place piles (31) closely arranged at both sides of the bottom of the retaining wall (2), and a plurality of second cast-in-place piles (32) arranged at intervals in the middle of the bottom of the retaining wall (2); The gaps between the first cast-in-place piles (31) are filled with film bag concrete (33); There is first sand (34) between the first cast-in-place pile (31) and the second cast-in-place pile (32); The first cast-in-place piles (31) located on both sides of the bottom of the retaining wall (2) are provided with anti-seepage walls (35) inside; The top of the first sand (34) is a grouting reinforcement layer (341); The retaining wall (2) is a U-shaped groove, and the groove contains second sand (21); The upper road surface (1) has wave-breaking walls (11) and inner railings (12) on both sides; The large cross-section of the embankment is a vertical embankment structure with a width of less than 10m. The upper load of the vertical embankment is limited within the width of the embankment and absorbed by the pile foundation. The construction method comprises the following steps: Step 1: a plurality of first cast-in-place piles (31) are closely arranged, and a plurality of second cast-in-place piles (32) are spaced apart; Step 2: Filling the gaps between the first cast-in-place piles (31) with film bag concrete (33); Step 3: filling the first sand (34) between the first bored pile (31) and the second bored pile (32); Step 4: high pressure swing spraying anti-seepage wall (35) inside the first cast-in-place pile (31); Step 5: Cast the retaining wall (2) on top of the first cast-in-place pile (31) and the second cast-in-place pile (32), and perform compaction grouting reinforcement on the surface layer of the first sand (34) through the grouting holes on the bottom plate of the retaining wall (2) to form a grouting reinforcement layer (341); Step 6: Backfill the retaining wall (2) with the second sand (21), set the upper road surface (1), the wave-breaking wall (11) and the inner railing (12), and complete the construction.

2. The construction method of the vertical embankment structure according to claim 1, characterized in that: The membrane bag concrete (33) is in an 8-shaped shape.

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