CN213173798U - Composite foundation and rigid embankment wall combined structure - Google Patents
Composite foundation and rigid embankment wall combined structure Download PDFInfo
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- CN213173798U CN213173798U CN202021460873.8U CN202021460873U CN213173798U CN 213173798 U CN213173798 U CN 213173798U CN 202021460873 U CN202021460873 U CN 202021460873U CN 213173798 U CN213173798 U CN 213173798U
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- embankment wall
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Abstract
The utility model discloses a composite foundation and rigidity embankment wall integrated configuration, including the rigid pile composite foundation who is located embankment wall basement, rigid pile composite foundation gos deep into in the following strong morals and manners basement rock of deep soft foundation, and composite foundation rigid pile top forms the flexonics through mattress pad layer and embankment wall foundation. The utility model discloses simple structure, manufacturing cost is lower, through composite foundation, mattress layer and rigid road embankment wall between interact and coordinated operation, can effectual improvement embankment wall basement bearing capacity and horizontal resistance, increase the overall stability of side slope simultaneously. And the construction cost is lower than that of large-section slide-resistant piles, pile plate walls and pile foundation joist embankment walls, the construction method can meet higher deformation requirements compared with a composite foundation gabion embankment wall structure, and the construction method is high in construction speed, high in safety and strong in practicability.
Description
Technical Field
The utility model belongs to side slope retaining structure especially involves the adjacent composite foundation and the rigidity embankment wall integrated configuration who has important structure under the dark soft basic condition.
Background
In order to ensure the stability of a filling body, a road embankment wall is often arranged at a slope toe for reinforcement, when the road embankment wall is adopted for supporting on soft soil and soft soil foundations, the possibility of great deformation and instability of the road embankment wall occurs due to low bearing capacity of the foundation, a filling pad layer can be adopted for foundation reinforcement on a shallow soft foundation, but the conventional rigid road embankment wall cannot be suitable for a deep soft foundation.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide an improve the overall stability of fill side slope, reduce to destruction risk, construction speed fast of structures on every side, the security is high, the composite foundation and the rigidity embankment wall integrated configuration that the practicality is strong.
The technical scheme of the utility model is that: a composite foundation and rigid embankment wall combined structure comprises an embankment wall positioned at a filling grade line and an expanded foundation positioned at the bottom end of the embankment wall; the bottom surface of the enlarged foundation is a reverse slope inclined surface, the bottom end of the enlarged foundation is provided with a composite foundation, and the bottom surface of the enlarged foundation and the composite foundation are filled by a mattress layer to form flexible connection.
Specifically, the composite foundation is arranged in a regular triangle by adopting small-diameter rigid piles.
Specifically, the embankment wall and the enlarged foundation are integrally cast.
Specifically, the mattress layer is a gravel layer.
Specifically, the retaining wall and the expanded foundation are C20 lamellar stone concrete, wherein the content of lamellar stones is not more than 20%, and the particle size of lamellar stones is not more than 2/3 of the thickness of each layer of the mould.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses simple structure, manufacturing cost is lower, through composite foundation, mattress layer and rigid road embankment wall between interact and coordinated operation, can effectual improvement embankment wall basement bearing capacity and horizontal resistance, increase the overall stability of side slope simultaneously. And the construction cost is lower than that of large-section slide-resistant piles, pile plate walls and pile foundation joist embankment walls, and compared with a composite foundation gabion embankment wall structure, the construction method has the advantages of higher deformation requirement, high construction speed, high safety and strong practicability.
Drawings
Fig. 1 is a schematic sectional structure of the present invention;
fig. 2 is a schematic front view of fig. 1.
FIG. 3 is a schematic view of a construction sequence of the composite foundation;
in the figure: 1-embankment wall; 2-expanding the basis; 3-a mattress layer; 4-composite foundation; 5-reverse slope; 6-filling the slope line.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-2, a composite foundation and rigid embankment wall combined structure is provided outside a fill side slope for supporting and retaining the fill side slope; the foundation comprises a embankment wall 1 positioned at a filling grade line, an enlarged foundation 2 at the bottom of the embankment wall 1, a mattress layer 3 at the bottom end of the enlarged foundation 2, a composite foundation 4 at the bottom end of the mattress layer 3 and a rigid pile composite foundation 4, wherein the rigid pile composite foundation 4 is deeply embedded into strongly weathered bedrock below a deep soft foundation; the embankment wall 1 and the enlarged foundation 2 are integrally cast; the bottom surface of the enlarged foundation 2 is a reverse slope inclined surface 5 facing the outer side of the side slope, and the mattress layer 3 is adopted to fill the space between the enlarged foundation 2 and the composite foundation 4 to form flexible connection.
The composite foundation 4 is arranged according to a regular triangle by adopting C25 plain concrete piles, the distance is 1.5 meters, and the pile diameter is 0.5 meter; in order to avoid disturbance of construction on surrounding important structures, construction of the C25 plain concrete pile composite foundation 4 is carried out by adopting a method of long spiral drilling and in-pipe pump pressure mixture pouring pile forming, and a pile forming test is carried out before construction of the C25 plain concrete pile; the pile length in the base area of the embankment wall 1 is the average pile length, and the pile end is arranged in the bedrock for not less than 1 m; the pile should be pre-pressed by 0.5m thick hard rock ballast on site before construction, and the construction plain concrete pile can be formed by long spiral drilling and pouring of pump pressure mixture in the pipe to avoid disturbance to surrounding important structures.
The reverse slope 5 acts to increase the horizontal sliding resistance of the retaining wall base, which is the bottom of the retaining wall enlarged foundation, and is not made of another material.
As shown in fig. 3, the composite foundation 4 is constructed by a "pile jump" method, i.e., a row-by-row construction, in a sequence from the center of the embankment wall 1 to the edge side thereof. The construction of a new pile and the disturbance of an old pile are avoided, so that the pile of the old pile is broken or a pile body floats upwards; and cleaning the piled soil between piles in the field in time, and re-measuring and accurately recovering the pile position.
The mattress layer 3 is a gravel cushion layer, and is significant in filling a gap between the base adverse slope inclined plane of the embankment wall and the composite foundation, so that the effect of diffusing the base stress of the embankment wall 1 can be achieved, and the horizontal friction force of the base of the embankment wall 1 is increased; the mattress layer is arranged between the enlarged foundation 2 and the composite foundation 4, can be fully attached to the adverse slope inclined surface 5 of the base of the embankment wall 1 towards the outer side of the side slope, and can increase the horizontal sliding resistance of the base of the embankment wall.
The embankment wall 1 and the enlarged foundation 2 are C20 rubble concrete, wherein the content of rubble is not more than 20%, and the particle size of the rubble is not more than 2/3 per layer of the building thickness.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best understand and utilize the invention.
Claims (4)
1. The utility model provides a composite foundation and rigidity embankment wall integrated configuration which characterized in that: comprises a embankment wall (1) positioned at a filling grade line (6) and an enlarged foundation (2) positioned at the bottom end of the embankment wall (1); the bottom of the enlarged foundation (2) is a reverse slope inclined plane (5), a composite foundation (4) is arranged below the enlarged foundation (2), and a mattress layer (3) is adopted to fill the reverse slope inclined plane (5) at the bottom of the enlarged foundation and the composite foundation (4) to form flexible connection.
2. A composite foundation and rigid embankment wall composite structure according to claim 1, wherein: the composite foundation (4) is arranged in a regular triangle by adopting small-diameter rigid piles.
3. A composite foundation and rigid embankment wall composite structure according to claim 1, wherein: the embankment wall (1) and the enlarged foundation (2) are integrally cast.
4. A composite foundation and rigid embankment wall composite structure according to claim 1, wherein: the mattress layer (3) is made of broken stones.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021460873.8U CN213173798U (en) | 2020-07-22 | 2020-07-22 | Composite foundation and rigid embankment wall combined structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021460873.8U CN213173798U (en) | 2020-07-22 | 2020-07-22 | Composite foundation and rigid embankment wall combined structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213173798U true CN213173798U (en) | 2021-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021460873.8U Active CN213173798U (en) | 2020-07-22 | 2020-07-22 | Composite foundation and rigid embankment wall combined structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213173798U (en) |
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2020
- 2020-07-22 CN CN202021460873.8U patent/CN213173798U/en active Active
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