CN219137706U - Combined foundation pit support pile formed by steel lattice column and circular concrete precast tubular pile - Google Patents
Combined foundation pit support pile formed by steel lattice column and circular concrete precast tubular pile Download PDFInfo
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- CN219137706U CN219137706U CN202320236576.2U CN202320236576U CN219137706U CN 219137706 U CN219137706 U CN 219137706U CN 202320236576 U CN202320236576 U CN 202320236576U CN 219137706 U CN219137706 U CN 219137706U
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Abstract
The utility model discloses a combined foundation pit support pile formed by steel lattice columns and round concrete precast tubular piles, wherein the steel lattice columns are connected with the round concrete precast tubular piles through connectors; the connector comprises a square part, a square-to-round transition part and a round part, wherein one end of the square part is embedded and fixed at the bottom end of the steel lattice column, and the other end of the square part is fixed with the round precast concrete pipe pile; the bottom end of the circular part of the connector is provided with a circular connecting steel ring inserted into the top end of the first circular center hole of the circular concrete precast tubular pile, and the circular part of the connector is welded with a circular steel end plate at the top end of the circular concrete precast tubular pile; the axis of the steel lattice column, the axis of the connector, the axis of the connecting steel ring and the axis of the circular concrete precast tubular pile are on the same straight line. The steel lattice column of the combined foundation pit support pile and the circular concrete precast tubular pile have relatively good coaxiality, and the maximum diagonal line of the circular concrete precast tubular pile and the steel lattice column can be firmly connected.
Description
Technical Field
The utility model relates to the technical field of combined foundation pit support piles, in particular to a combined foundation pit support pile formed by steel lattice columns and round concrete precast tubular piles.
Background
The foundation pit supporting piles comprise vertical foundation pit supporting piles and inclined foundation pit supporting piles.
The existing foundation pit support pile, whether the foundation pit support pile is vertical or inclined, is generally a steel lattice column above a foundation pit bottom plate, a bored pile below the foundation pit bottom plate, and the bottom end of the steel lattice column is inserted into the top end of the bored pile by about two meters. The foundation pit support pile has the defects of environmental pollution caused by waste slurry generated in construction, difficult control of construction quality, relatively slow construction speed, relatively low efficiency and the like.
In recent years, technicians have tried to use a composite foundation pit support pile composed of a steel lattice column at the upper part and a circular concrete precast tubular pile at the lower part, for example, the circular concrete precast tubular pile is directly sleeved in the steel lattice column, and then the steel lattice column and the circular concrete precast tubular pile are welded and fixed. This structure has the following disadvantages: the outer circumference of the circular concrete precast tubular pile and the square inner hole of the square steel lattice column are relatively poor in fit, so that the steel lattice column and the circular concrete precast tubular pile are relatively poor in coaxial line, the firmness, the strength and the bearing capacity of the combined foundation pit support pile are directly influenced, and the defects are particularly obvious when the combined foundation pit support pile is used as an inclined foundation pit support pile. In addition, the combined foundation pit support pile in the prior art cannot firmly connect the round concrete precast tubular pile with the maximum diagonal line of the steel lattice column, so that the bending resistance of the combined foundation pit support pile is greatly reduced. Moreover, the overlapping parts of the circular concrete precast tubular piles and the steel lattice columns of the combined foundation pit support pile in the prior art are relatively more, and the material cost is relatively increased.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a combined foundation pit support pile which is formed by a circular concrete precast tubular pile, a square steel lattice column, a steel lattice column and a circular concrete precast tubular pile, wherein the anastomosis degree of the circular concrete precast tubular pile and the square steel lattice column is relatively good, the coaxiality of the steel lattice column and the circular concrete precast tubular pile is relatively good, and the maximum diagonal line of the circular concrete precast tubular pile and the steel lattice column can be firmly connected.
The technical scheme of the utility model is that a combined foundation pit support pile is provided, wherein the combined foundation pit support pile is composed of steel lattice columns and round concrete precast tubular piles, and the steel lattice columns are connected with the round concrete precast tubular piles through connectors; the connector comprises a square part, a square-to-round transition part and a round part, wherein one end of the square part is embedded and fixed at the bottom end of the steel lattice column, and the other end of the round part is fixed with the round concrete precast tubular pile.
After the structure is adopted, the combined foundation pit support pile formed by the steel lattice column and the circular concrete precast tubular pile has the following advantages:
because the steel lattice column is connected with the circular concrete precast tubular pile by the connector, the connector comprises a square part, a square-to-circular transition part and a circular part, wherein one end of the square part is embedded and fixed at the bottom end of the steel lattice column, and the other end of the circular part is fixed with the circular concrete precast tubular pile. The degree of coincidence of the circular concrete precast tubular pile and the square steel lattice column is relatively good, and the coaxiality of the steel lattice column and the circular concrete precast tubular pile is relatively good, so that the firmness, the strength and the bearing capacity of the combined foundation pit support pile can be ensured.
And because the top end of the connector is a square part which is embedded and fixed at the bottom end of the steel lattice column, the round concrete precast tubular pile is firmly connected with the maximum diagonal line of the steel lattice column through the connector, and the bending resistance of the combined foundation pit support pile is greatly improved.
And moreover, after the connectors are fixedly connected, the overlapping part of the circular concrete precast tubular pile and the steel lattice column of the combined foundation pit support pile can be relatively reduced, and the material cost is relatively saved.
Further, a circular connecting steel ring inserted into the top end of the first circular center hole of the circular concrete precast tubular pile is arranged at the bottom end of the circular part of the connector, and the circular part of the connector is welded with a circular steel end plate at the top end of the circular concrete precast tubular pile. After the structure is adopted, the firmness, strength, bearing capacity and bending resistance of the combined foundation pit support pile are further improved.
Further, the axis of the steel lattice column, the axis of the connector and the axis of the circular connecting steel ring are on the same straight line with the axis of the circular concrete precast tubular pile. After the structure is adopted, the steel lattice column and the axis of the circular concrete precast tubular pile are guaranteed to be on the same straight line, and the firmness, the strength, the bearing capacity and the bending resistance of the combined foundation pit support pile are further improved.
Further, the connector also includes a second circular central bore. After the structure is adopted, the connection of the connector is more convenient, and the drill rod can be penetrated to have multiple functions when needed.
Further, the connectors are reinforced concrete connectors with the tops poured into four angle steels at the bottom end of the steel lattice column in advance, and a reinforcement cage in each reinforced concrete connector is welded and fixed with the four angle steels at the bottom end of the steel lattice column; the bottom end of the reinforced concrete connector is provided with a circular connecting steel end plate connected with the reinforcement cage and a circular connecting steel ring which is fixed with the circular connecting steel end plate and is used for being inserted into the top end in a first circular center hole of the circular concrete precast tubular pile; and the round connecting steel end plate at the bottom end of the reinforced concrete connector is welded and fixed with the round steel end plate at the top end of the round concrete precast tubular pile. After the structure is adopted, a fixed connection structure of the reinforced concrete connector and the bottom end of the steel lattice column is provided, so that the steel lattice column and the circular concrete precast tubular pile are more firmly and reliably connected, and the firmness, the strength, the bearing capacity and the bending resistance of the combined foundation pit support pile are further improved.
Further, the connectors are reinforced concrete connectors with the tops poured into four angle steels at the bottom end of the steel lattice column in advance, and square connecting steel end plates connected with the reinforcement cages in the reinforced concrete connectors and positioned at the tops of the connectors are welded and fixed with the inner walls of the four angle steels at the bottom end of the steel lattice column; the bottom end of the reinforced concrete connector is provided with a circular connecting steel end plate connected with the reinforcement cage and a circular connecting steel ring which is fixed with the circular connecting steel end plate and is used for being inserted into the top end in a first circular center hole of the circular concrete precast tubular pile; and the round connecting steel end plate at the bottom end of the reinforced concrete connector is welded and fixed with the round steel end plate at the top end of the round concrete precast tubular pile. After the structure is adopted, the fixed connection structure of the other reinforced concrete connector and the bottom end of the steel lattice column is provided, so that the steel lattice column and the circular concrete precast tubular pile are more firmly and reliably connected, and the firmness, the strength, the bearing capacity and the bending resistance of the combined foundation pit support pile are further improved.
Further, the four corners of the square part at the top end of the reinforced concrete connector are respectively provided with L-shaped grooves attached to the inner walls of four angle steels at the bottom end of the steel lattice column. After the structure is adopted, the connection of the connector and the maximum diagonal line of the circular concrete precast tubular pile and the steel lattice column is firmer and more reliable, and the firmness, the strength, the bearing capacity and the bending resistance of the combined foundation pit support pile are further improved.
Drawings
Fig. 1 is a schematic structural view of a composite foundation pit support pile according to the present utility model (in which the length of the steel lattice column and the length of the circular concrete precast pile are both schematically drawn, the entire length is not drawn, the welded portion is not shown, and the same applies to fig. 2 to 6 below).
Fig. 2 is a schematic diagram of an explosion structure of the combined foundation pit support pile according to the present utility model.
FIG. 3 is a schematic diagram of an exploded structure of a composite foundation pit support pile according to the present utility model.
Fig. 4 is a schematic diagram of an explosion structure of the combined foundation pit support pile according to the present utility model.
Fig. 5 is a schematic diagram of an explosion structure of the combined foundation pit support pile according to the present utility model.
Fig. 6 is a schematic view of the connection structure of the steel lattice column and the connector in the present utility model.
The figure shows: 1. steel lattice column 2, connector, 3, circular concrete precast tubular pile, 4, batten board, 5, angle steel, 6, square part, 7, transition part, 8, circular part, 9, circular connection steel end plate, 10, circular steel end plate, 11, circular connection steel ring, 12, first circular centre bore, 13, L font recess, 14, second circular centre bore, 15, third circular centre bore.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings. It should be noted that the description of these embodiments is for aiding in understanding the present utility model, but is not to be construed as limiting the utility model. In addition, the technical means involved in the respective embodiments of the present utility model described below may be combined with each other as long as they do not constitute a conflict with each other.
As shown in fig. 1, 2, 3, 4, 5, and 6.
The combined foundation pit support pile formed by the steel lattice column and the circular concrete precast tubular pile can be used as a vertical foundation pit support pile and also can be used as an inclined foundation pit support pile or an inclined inner support. The upper part is a steel lattice column 1, and the lower part is a circular concrete precast tubular pile 3. The round concrete precast tubular pile 3 can be a PC tubular pile or a PHC tubular pile. It is not difficult to understand: the steel lattice column 1 comprises four angle steels 5 and a plurality of rows of lacing plates 4, each row of lacing plates 4 is four or four, and each or each lacing plate 4 is welded with two angle steels 5. The gusset plate 4 may also be referred to as a connecting cross plate. The circular concrete precast tubular pile 3 has a first circular center hole 12.
According to the combined foundation pit support pile formed by the steel lattice column and the circular concrete precast tubular pile, the steel lattice column 1 and the circular concrete precast tubular pile 3 are connected by a connector 2. The connector 2 comprises a square part 6 with one end embedded and fixed at the bottom end of the steel lattice column 1, a square-to-round transition part 7 and a round part 8 with the other end fixed with the round concrete precast tubular pile 3. The diameter of the circular part 8 can be equal to the diameter of the circular concrete precast tubular pile 3. The connection head 2 may also be referred to as a connection structure.
The bottom end of the circular part 8 of the connector 2 is provided with a circular connecting steel ring 11 inserted into the top end of the first circular center hole 12 of the circular concrete precast tubular pile 3, and the circular part 8 of the connector 2 is welded with a circular steel end plate 10 at the top end of the circular concrete precast tubular pile 3. The circular steel end plate 10 is also called a circular steel ring.
The axis of the steel lattice column 1, the axis of the connector 2 and the axis of the circular connecting steel ring 11 are on the same straight line with the axis of the circular concrete precast tubular pile 3.
The connector head 2 further comprises a second circular central bore 14.
One embodiment or specific structure of the connector 2: the connector 2 is preferably a reinforced concrete connector with the top end poured in four angle steels 5 at the bottom end of the steel lattice column 1 in advance, and a reinforcement cage in the reinforced concrete connector can be welded and fixed with the four angle steels 5 at the bottom end of the steel lattice column 1. The bottom of the reinforced concrete connector is provided with a circular connecting steel end plate 9 connected with the reinforcement cage and a circular connecting steel ring 11 which is fixed with the circular connecting steel end plate 9 as an integrated form and is used for being inserted into the top end in the first circular center hole 12 of the circular concrete precast tubular pile 3. The round connecting steel end plate 9 at the bottom end of the reinforced concrete connector is welded and fixed with the round steel end plate 10 at the top end of the round concrete precast tubular pile 3. It is not difficult to understand: the circular portion 8 of the connector 2 comprises a circular connecting steel end plate 9. The circular steel end plate 10 at the top end of the circular concrete precast tubular pile 3 is welded and fixed with a reinforcement cage in the circular concrete precast tubular pile 3. A third circular central hole 15 is provided in the circular connecting steel ring 11.
Another embodiment or another specific structure of the connector: the connector is a reinforced concrete connector with the top end poured in four angle steels at the bottom end of the steel lattice column in advance, and is connected with a reinforcement cage in the reinforced concrete connector and is positioned on a square connecting steel end plate at the top end of the connector and welded and fixed with the inner walls of the four angle steels at the bottom end of the steel lattice column. The bottom of the reinforced concrete connector is provided with a circular connecting steel end plate connected with the reinforcement cage and a connecting steel ring fixed with the circular connecting steel end plate and used for being inserted into the top end in the first circular center hole of the circular concrete precast tubular pile. And the round connecting steel end plate at the bottom end of the reinforced concrete connector is welded and fixed with the round steel end plate at the top end of the round concrete precast tubular pile.
The four corners of the square part 6 at the top end of the connector 2 such as a reinforced concrete connector are respectively provided with an L-shaped groove 13 which is attached to the inner walls of the four angle steels 5 at the bottom end of the steel lattice column 1. The square connecting steel end plates can be connected easily, and the four corners of the square connecting steel end plates can be provided with L-shaped grooves.
The connector can also be a steel connector, and the shape of the connector is the same as that of the reinforced concrete connector. The steel connector is welded and fixed with four angle steel at the bottom end of the steel lattice column, and is welded and fixed with a round steel end plate at the top end of the round concrete precast tubular pile.
The above unnumbered components or structures or numbers are not shown. The drawings are schematic only, where the drawings do not conform to the written description or where the drawings do not conform to each other, the written description will take precedence.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. The utility model provides a combination foundation ditch support stake that steel lattice column and circular concrete precast tubular pile constitute which characterized in that: the steel lattice column is connected with the round concrete precast tubular pile through a connector; the connector comprises a square part, a square-to-round transition part and a round part, wherein one end of the square part is embedded and fixed at the bottom end of the steel lattice column, and the other end of the round part is fixed with the round concrete precast tubular pile.
2. The composite foundation pit support pile formed by steel lattice columns and round concrete precast tubular piles according to claim 1, wherein: the bottom of the circular part of the connector is provided with a circular connecting steel ring inserted into the top end in the first circular center hole of the circular concrete precast tubular pile, and the circular part of the connector is welded with a circular steel end plate at the top end of the circular concrete precast tubular pile.
3. The composite foundation pit support pile formed by steel lattice columns and round concrete precast tubular piles according to claim 2, wherein: the axis of the steel lattice column, the axis of the connector, the axis of the connecting steel ring and the axis of the circular concrete precast tubular pile are on the same straight line.
4. The composite foundation pit support pile formed by steel lattice columns and round concrete precast tubular piles according to claim 2, wherein: the connector also includes a second circular central bore.
5. The composite foundation pit support pile formed by steel lattice columns and round concrete precast tubular piles according to claim 1, wherein: the connectors are reinforced concrete connectors with the tops poured into four angle steels at the bottom ends of the steel lattice columns in advance, and a reinforcement cage in each reinforced concrete connector is welded and fixed with the four angle steels at the bottom ends of the steel lattice columns; the bottom end of the reinforced concrete connector is provided with a circular connecting steel end plate connected with the reinforcement cage and a connecting steel ring which is fixed with the circular connecting steel end plate and is used for being inserted into the top end in a first circular center hole of the circular concrete precast tubular pile; and the round connecting steel end plate at the bottom end of the reinforced concrete connector is welded and fixed with the round steel end plate at the top end of the round concrete precast tubular pile.
6. The composite foundation pit support pile formed by steel lattice columns and round concrete precast tubular piles according to claim 1, wherein: the connector is a reinforced concrete connector with the top end poured in four angle steels at the bottom end of the steel lattice column in advance, and a square connecting steel end plate connected with a reinforcement cage in the reinforced concrete connector and positioned at the top end of the connector is welded and fixed with the inner walls of the four angle steels at the bottom end of the steel lattice column; the bottom end of the reinforced concrete connector is provided with a circular connecting steel end plate connected with the reinforcement cage and a circular connecting steel ring which is fixed with the circular connecting steel end plate and is used for being inserted into the top end in a first circular center hole of the circular concrete precast tubular pile; and the round connecting steel end plate at the bottom end of the reinforced concrete connector is welded and fixed with the round steel end plate at the top end of the round concrete precast tubular pile.
7. The composite foundation pit support pile formed by the steel lattice columns and the circular concrete precast tubular piles according to claim 5 or 6, wherein: the four corners of the square part at the top end of the reinforced concrete connector are respectively provided with L-shaped grooves attached to the inner walls of four angle steels at the bottom end of the steel lattice column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320236576.2U CN219137706U (en) | 2023-02-10 | 2023-02-10 | Combined foundation pit support pile formed by steel lattice column and circular concrete precast tubular pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320236576.2U CN219137706U (en) | 2023-02-10 | 2023-02-10 | Combined foundation pit support pile formed by steel lattice column and circular concrete precast tubular pile |
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| Publication Number | Publication Date |
|---|---|
| CN219137706U true CN219137706U (en) | 2023-06-06 |
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| CN202320236576.2U Active CN219137706U (en) | 2023-02-10 | 2023-02-10 | Combined foundation pit support pile formed by steel lattice column and circular concrete precast tubular pile |
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| CN (1) | CN219137706U (en) |
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