CN215715456U - Combined pile foundation - Google Patents
Combined pile foundation Download PDFInfo
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- CN215715456U CN215715456U CN202122392534.1U CN202122392534U CN215715456U CN 215715456 U CN215715456 U CN 215715456U CN 202122392534 U CN202122392534 U CN 202122392534U CN 215715456 U CN215715456 U CN 215715456U
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Abstract
本实用新型提供一种组合桩基础，包括：承台、钢管混凝土立柱、钻孔灌注桩、钢管斜桩；所述承台的底部连接有两根以上间隔并列设置的钻孔灌注桩；所述钻孔灌注桩竖向设置，用于竖向置入地基中；所有钻孔灌注桩中至少一侧的最外侧钻孔灌注桩顶部与钢管混凝土立柱连接，钢管混凝土立柱顶部连接承台；所述钢管斜桩斜向连接钢管混凝土立柱外侧，用于向外侧斜下方置入地基中。本实用新型能够降低成本，且保证基础的稳固性。
The utility model provides a combined pile foundation, comprising: a cap, a steel tube concrete column, a bored cast-in-place pile, and a steel pipe inclined pile; the bottom of the cap is connected with two or more bored cast-in-place piles arranged side by side at intervals; The bored cast-in-place piles are arranged vertically and are used to be vertically placed into the foundation; the top of the outermost bored cast-in-place piles on at least one side of all the bored cast-in-place piles is connected to the concrete-filled steel tubular column, and the top of the concrete-filled steel tubular column is connected to the bearing platform; the The steel pipe inclined pile is connected to the outer side of the concrete-filled steel pipe column obliquely, and is used to be placed in the foundation obliquely downward to the outer side. The utility model can reduce the cost and ensure the stability of the foundation.
Description
Technical Field
The utility model relates to a foundation in civil engineering, in particular to a combined pile foundation.
Background
Cast-in-situ bored piles are commonly used as foundation forms, are indispensable in almost all civil engineering such as bridge engineering, building engineering, wharf engineering, and the like, can provide good vertical bearing capacity, but have poor horizontal bearing capacity.
For the foundations which generally need to provide large horizontal bearing capacity, such as bridge piers, anti-collision piers, arch bridge pier foundation and the like, mostly adopted are bored cast-in-place pile group pile foundations, which are characterized in that bending moment generated by original horizontal force is converted into pile foundation axial force, and the pile foundation bears shearing force, however, the shearing level of the pile foundation is often low, and the efficiency of the pile foundation for bearing foundation bending moment effect is relatively low.
Disclosure of Invention
Aiming at the defects in the prior art, the embodiment of the utility model provides the combined pile foundation capable of realizing the functions of vertical bearing capacity, horizontal bearing capacity and shearing resistance, so that the cost can be reduced, and the stability of the foundation can be ensured. In order to achieve the technical purpose, the embodiment of the utility model adopts the technical scheme that:
the embodiment of the utility model provides a combined pile foundation, which comprises: bearing platforms, steel pipe concrete columns, cast-in-situ bored piles and steel pipe inclined piles;
the bottom of the bearing platform is connected with more than two cast-in-situ bored piles which are arranged in parallel at intervals;
the cast-in-situ bored pile is vertically arranged and is used for being vertically placed into a foundation;
the top of the outermost cast-in-situ bored pile on at least one side of all the cast-in-situ bored piles is connected with a concrete filled steel tube stand, and the top of the concrete filled steel tube stand is connected with a bearing platform;
the steel pipe inclined pile is obliquely connected with the outer side of the steel pipe concrete upright post and is used for being placed into the foundation obliquely below the outer side.
Furthermore, the tops of the outermost cast-in-situ bored piles on two opposite sides of all the cast-in-situ bored piles are respectively connected with the concrete-filled steel tube columns; the outer sides of the steel tube concrete columns are all obliquely connected with steel tube oblique piles.
Furthermore, the number of the steel tube inclined columns which are obliquely connected with the outer sides of the steel tube concrete upright columns is more than two.
Furthermore, a reinforcement cage is arranged in the cast-in-situ bored pile, and the reinforcement cage and the poured concrete form the cast-in-situ bored pile; the steel tube concrete upright column comprises a steel tube upright column, and the reinforcement cage extends upwards to enter a section of the bottom of the steel tube upright column; concrete is poured into the steel tube upright columns.
Furthermore, the steel pipe batter pile is formed by connecting a plurality of steel pipe batter posts in sequence.
Further, the diameter of the concrete filled steel tube column is larger than that of the bored concrete pile.
The technical scheme provided by the embodiment of the utility model has the following beneficial effects: compare in current drilling bored concrete pile crowd pile foundation needs the drilling bored concrete pile of a great quantity, this application constitutes the composite pile foundation through steel pipe concrete stand, drilling bored concrete pile and steel pipe batter pile combination, has both realized having vertical bearing capacity, horizontal bearing capacity, the composite pile foundation of function of shearing, guarantees the steadiness of foundation, can reduce the quantity of drilling bored concrete pile again, and the cost is reduced also can improve the efficiency of construction.
Drawings
Fig. 1 is a schematic view of a composite pile foundation according to a first embodiment of the present invention.
Fig. 2 is a schematic view of a composite pile foundation according to a second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection can be mechanical connection or electrical connection; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the first embodiment, the combined pile foundation is used as an arch foundation of an arch bridge;
the arch bridge arch foundation is a unidirectional horizontal force foundation, and the combined pile foundation provided by the embodiment, as shown in fig. 1, comprises: the pile comprises a bearing platform 1, a steel pipe concrete upright 2, a cast-in-situ bored pile 3 and a steel pipe inclined pile 4;
the bottom of the bearing platform 1 is connected with more than two cast-in-situ bored piles 3 which are arranged in parallel at intervals; the bearing platform 1 can be connected with all cast-in-situ bored piles 3 and is used for connecting a bridge arch 5;
the cast-in-situ bored pile 3 is vertically arranged and is vertically arranged in a foundation and mainly provides vertical bearing capacity;
the top of the outermost cast-in-situ bored pile 3 at one side of all the cast-in-situ bored piles 3 is connected with the concrete filled steel tube column 2, and the top of the concrete filled steel tube column 2 is connected with the bearing platform 1; the steel pipe concrete upright post 2 can bear the shear-resistant bearing capacity of the foundation;
the steel pipe inclined pile 4 is obliquely connected with the outer side of the steel pipe concrete upright post 2 and is used for being placed into the foundation obliquely below the outer side; the steel pipe inclined piles 4 can provide horizontal bearing capacity and vertical bearing capacity; in the embodiment, the steel pipe batter post 4 can resist the thrust in one direction of the bridge arch 5;
as the optimization of the embodiment, more than two steel tube inclined columns 4 are obliquely connected to the outer sides of the steel tube concrete upright columns 2;
specifically, a reinforcement cage is arranged in the cast-in-situ bored pile 3, and the reinforcement cage and the poured concrete form the cast-in-situ bored pile 3; the steel tube concrete upright post 2 comprises a steel tube upright post, and the reinforcement cage extends upwards to enter a section of the bottom of the steel tube upright post; concrete is poured into the steel pipe upright columns; the concrete-filled steel tube column 2 and the cast-in-situ bored pile 3 are configured in such a way, so that the concrete-filled steel tube column and the cast-in-situ bored pile are firm in structure and firm in connection structure; for the pushing construction of the steel pipe inclined pile 4, the steel pipe concrete upright post 2 and the cast-in-situ bored pile 3 which are firmly connected can be used as a counterforce device for the pushing construction together;
specifically, the steel pipe batter pile 4 is formed by sequentially connecting a plurality of steel pipe batter posts; the side surface of the steel pipe upright post is preset with a construction hole of the steel pipe inclined pile 4, the steel pipe inclined pile is obliquely arranged into the foundation outwards through pushing construction in the steel pipe upright post, and the steel pipe inclined piles 4 are formed by sequentially connecting the steel pipe inclined piles; the method comprises the following steps that specifically, a steel pipe inclined column is obliquely jacked to the outer oblique lower side in a steel pipe upright column through a jack, and in the process of obliquely jacking, the jack is supported on the inner wall of the steel pipe upright column through a jack counterforce seat;
in order to facilitate the pushing construction of the steel pipe inclined pile 4, the diameter of the steel pipe concrete upright post 2 (namely the diameter of the steel pipe upright post) is larger than that of the cast-in-situ bored pile 3, for example, the diameter of the steel pipe concrete upright post 2 is not smaller than 2.5 m;
the embodiment finally realizes the combined pile foundation with the vertical bearing capacity, the horizontal bearing capacity and the shear resistance.
In the second embodiment, the combined pile foundation is used as a bridge pier foundation of a bridge;
bridge pier basis is a two-way horizontal force basis, and the combined pile basis that this embodiment provided, as shown in fig. 2, includes: the pile comprises a bearing platform 1, a steel pipe concrete upright 2, a cast-in-situ bored pile 3 and a steel pipe inclined pile 4;
the bottom of the bearing platform 1 is connected with more than two cast-in-situ bored piles 3 which are arranged in parallel at intervals; the bearing platform 1 can be connected with all the cast-in-situ bored piles 3 and is used for connecting the bridge piers 6;
the cast-in-situ bored pile 3 is vertically arranged and is vertically arranged in a foundation and mainly provides vertical bearing capacity;
the tops of the outermost cast-in-situ bored piles 3 on the two opposite sides of all the cast-in-situ bored piles 3 are connected with the concrete filled steel tube column 2, and the top of the concrete filled steel tube column 2 is connected with the bearing platform 1; the steel pipe concrete upright post 2 can bear the shear-resistant bearing capacity of the foundation;
the steel pipe inclined pile 4 is obliquely connected with the outer side of the steel pipe concrete upright post 2 and is used for being placed into the foundation obliquely below the outer side; the steel pipe inclined piles 4 can provide horizontal bearing capacity and vertical bearing capacity; in the embodiment, the steel pipe batter post 4 can resist the thrust in two directions of the pier 6;
as the optimization of the embodiment, more than two steel tube inclined columns 4 are obliquely connected to the outer sides of the steel tube concrete upright columns 2;
specifically, a reinforcement cage is arranged in the cast-in-situ bored pile 3, and the reinforcement cage and the poured concrete form the cast-in-situ bored pile 3; the steel tube concrete upright post 2 comprises a steel tube upright post, and the reinforcement cage extends upwards to enter a section of the bottom of the steel tube upright post; concrete is poured into the steel pipe upright columns; the concrete-filled steel tube column 2 and the cast-in-situ bored pile 3 are configured in such a way, so that the concrete-filled steel tube column and the cast-in-situ bored pile are firm in structure and firm in connection structure; for the pushing construction of the steel pipe inclined pile 4, the steel pipe concrete upright post 2 and the cast-in-situ bored pile 3 which are firmly connected can be used as a counterforce device for the pushing construction together;
specifically, the steel pipe batter pile 4 is formed by sequentially connecting a plurality of steel pipe batter posts; the side surface of the steel pipe upright post is preset with a construction hole of the steel pipe inclined pile 4, the steel pipe inclined pile is obliquely arranged into the foundation outwards through pushing construction in the steel pipe upright post, and the steel pipe inclined piles 4 are formed by sequentially connecting the steel pipe inclined piles; the method comprises the following steps that specifically, a steel pipe inclined column is obliquely jacked to the outer oblique lower side in a steel pipe upright column through a jack, and in the process of obliquely jacking, the jack is supported on the inner wall of the steel pipe upright column through a jack counterforce seat;
in order to facilitate the pushing construction of the steel pipe inclined pile 4, the diameter of the steel pipe concrete upright post 2 (namely the diameter of the steel pipe upright post) is larger than that of the cast-in-situ bored pile 3, for example, the diameter of the steel pipe concrete upright post 2 is not smaller than 2.5 m;
the embodiment finally realizes the combined pile foundation with the vertical bearing capacity, the horizontal bearing capacity and the shear resistance.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (6)
1. A composite pile foundation, comprising: the concrete-filled steel tube pile comprises a bearing platform (1), a concrete-filled steel tube column (2), a cast-in-situ bored pile (3) and a steel tube inclined pile (4);
the bottom of the bearing platform (1) is connected with more than two cast-in-situ bored piles (3) which are arranged in parallel at intervals;
the cast-in-situ bored pile (3) is vertically arranged and is vertically placed into a foundation;
the top of the outermost cast-in-situ bored pile (3) at least one side of all the cast-in-situ bored piles (3) is connected with the concrete filled steel tube column (2), and the top of the concrete filled steel tube column (2) is connected with the bearing platform (1);
the steel pipe inclined pile (4) is obliquely connected with the outer side of the steel pipe concrete upright post (2) and is arranged in the foundation obliquely below the outer side.
2. The modular pile foundation of claim 1,
the tops of the outermost cast-in-situ bored piles (3) on the two opposite sides of all the cast-in-situ bored piles (3) are respectively connected with the concrete-filled steel tube column (2); the outer sides of the steel pipe concrete columns (2) are all obliquely connected with steel pipe oblique piles (4).
3. The composite pile foundation of claim 1 or 2,
more than two steel pipe inclined columns (4) are obliquely connected to the outer sides of the steel pipe concrete upright columns (2).
4. The composite pile foundation of claim 1 or 2,
a reinforcement cage is arranged in the cast-in-situ bored pile (3), and the reinforcement cage and the poured concrete form the cast-in-situ bored pile (3); the steel tube concrete upright post (2) comprises a steel tube upright post, and the reinforcement cage extends upwards to enter a section of the bottom of the steel tube upright post; concrete is poured into the steel tube upright columns.
5. The composite pile foundation of claim 1 or 2,
the steel pipe batter pile (4) is formed by sequentially connecting a plurality of steel pipe batter posts.
6. The composite pile foundation of claim 1 or 2,
the diameter of the steel pipe concrete upright post (2) is larger than that of the cast-in-situ bored pile (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122392534.1U CN215715456U (en) | 2021-09-30 | 2021-09-30 | Combined pile foundation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122392534.1U CN215715456U (en) | 2021-09-30 | 2021-09-30 | Combined pile foundation |
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| CN215715456U true CN215715456U (en) | 2022-02-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115059063A (en) * | 2022-07-22 | 2022-09-16 | 广州环投南沙环保能源有限公司 | A kind of pile foundation with large settlement and reinforcement method |
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2021
- 2021-09-30 CN CN202122392534.1U patent/CN215715456U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115059063A (en) * | 2022-07-22 | 2022-09-16 | 广州环投南沙环保能源有限公司 | A kind of pile foundation with large settlement and reinforcement method |
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Address after: 214000 21-14a, Jiefang North Road, Wuxi City, Jiangsu Province Patentee after: Jiangsu Kejia Design Group Co.,Ltd. Country or region after: China Address before: 214000 21-14a, Jiefang North Road, Liangxi District, Wuxi City, Jiangsu Province Patentee before: JIANGSU KEJIA ENGINEERING DESIGN Co.,Ltd. Country or region before: China |