CN216474470U - Steel-pipe column and bored concrete pile connection structure - Google Patents
Steel-pipe column and bored concrete pile connection structure Download PDFInfo
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- CN216474470U CN216474470U CN202120864960.8U CN202120864960U CN216474470U CN 216474470 U CN216474470 U CN 216474470U CN 202120864960 U CN202120864960 U CN 202120864960U CN 216474470 U CN216474470 U CN 216474470U
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Abstract
The utility model discloses a connecting structure of a steel pipe column and a cast-in-place pile, which comprises a cast-in-place pile and the steel pipe column, wherein the cast-in-place pile comprises a pile foundation concrete member and a reinforcement cage, the upper part of the reinforcement cage extends out of the top surface of the pile foundation concrete member, the reinforcement cage comprises a spiral stirrup and a plurality of main reinforcements, and the main reinforcements are attached to the inner side of the spiral stirrup; during the steel reinforcement cage was stretched into to the lower part of steel-pipe column, the outside and the main muscle of steel-pipe column were connected, were equipped with the shear force nail group in the steel-pipe column, and the steel-pipe column intussuseption is filled with interior concrete component, and the upper portion outside of steel reinforcement cage is equipped with outer concrete component. The steel pipe column extends into the reinforcement cage and is connected with the main reinforcement, and then concrete is poured at the joint of the steel pipe column and the reinforcement cage to form an outer concrete member, so that the steel pipe column and the cast-in-place pile can be stably connected, and the shearing resistance of the joint is improved. In addition, a shear nail group extending into the inner concrete member is arranged in the steel pipe column, so that the steel pipe column is effectively prevented from being buckled and damaged, the structure is reliable, and construction is facilitated.
Description
Technical Field
The utility model relates to a connecting structure of a steel pipe column and a cast-in-place pile in the technical field of building construction.
Background
With social progress and technical development, the prefabrication and assembly technology is widely applied to urban bridges, pile foundations and bearing platforms below the ground are mostly made of cast-in-place concrete, pier columns are made of steel pipe columns, an upper structure is made of steel box girders, and the prefabricated and assembled bridge is prefabricated in a factory and assembled on site, is green and environment-friendly, and is rapid and convenient. The connection between steel-pipe column and concrete foundation adopts rag bolt connected mode now more, and the steel-pipe column passes through the ring flange toe board of bottom promptly and pre-buried rag bolt in the concrete foundation, and this technique needs the more rag bolt of configuration just can guarantee node rigidity, and ring flange toe board size is great, leads to the steel-pipe column can't directly be connected with the pile foundation, does not solve steel construction and concrete structure's connection atress problem well, and it is more weak to have the nodal connection, the scheduling problem that shear resistance is poor. Particularly, in the connection mode, the bearing platform is arranged between the steel pipe column and the concrete foundation and is used for conversion, but the bearing platform is usually large in size, so that the existing underground pipeline is easily changed or the arrangement of a newly-built pipeline is influenced, the period of changing the underground pipeline is prolonged, the cost is increased, and the working procedure is increased after the bearing platform is arranged, so that the construction complexity is increased, and the construction progress is influenced; in addition, the size of the pile foundation is increased for the size of the flange column base plate, but the size of the pile foundation is larger, and the engineering investment and the construction difficulty are increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve at least one technical problem in the prior art, and provides a connecting structure of a steel pipe column and a cast-in-place pile, which has a simple structure and is stable in connection.
According to an embodiment of the utility model, a connecting structure of a steel pipe column and a cast-in-place pile is provided, which comprises a cast-in-place pile, wherein the cast-in-place pile comprises a pile foundation concrete member and a reinforcement cage, the lower part of the reinforcement cage is positioned in the pile foundation concrete member, the upper part of the reinforcement cage extends out of the top surface of the pile foundation concrete member, the reinforcement cage comprises a spiral stirrup and a plurality of main reinforcements, and the main reinforcements are attached to the inner side of the spiral stirrup; the steel pipe column, the lower part of steel pipe column stretches into in the steel reinforcement cage, the outside of steel pipe column with the owner muscle is connected, be equipped with the shear force nail group that at least one deck hoop was arranged in the steel pipe column, the shear force nail group includes two above shear force nails, the steel pipe column intussuseption is filled with interior concrete component, the upper portion outside of steel reinforcement cage is equipped with outer concrete component, outer concrete component parcel the steel pipe column with the junction of steel reinforcement cage.
According to the embodiment of the utility model, further, each of the main ribs is arranged at intervals along the circumferential direction of the spiral stirrup, and each of the main ribs is equally spaced.
According to an embodiment of the present invention, further, the main beads are each parallel to an axial direction of the helical stirrup.
According to the embodiment of the utility model, the number of the shear nail groups is more than three, each shear nail group is arranged along the axial direction of the steel pipe column, and the shear nail groups are spaced at equal intervals.
According to an embodiment of the utility model, further the inner concrete element is a micro-expanded concrete element.
According to an embodiment of the utility model, the steel pipe column further comprises a main body section, a reducer section and a connecting section which are sequentially connected from top to bottom, wherein the diameter of the main body section is not equal to the diameter of the connecting section, the diameter of the upper end of the reducer section is equal to the diameter of the main body section, and the diameter of the lower end of the reducer section is equal to the diameter of the connecting section.
According to the embodiment of the utility model, further, annular stiffening plates are respectively arranged on the inner sides of the two ends of the reducing section.
According to an embodiment of the present invention, further, the length of the main reinforcement extending into the outer concrete member is not less than 25 times the diameter of the main reinforcement.
According to an embodiment of the utility model, further the top surface of the outer concrete element is at least 20cm above the design ground level.
The utility model has the beneficial effects that: the steel pipe column extends into the reinforcement cage and is connected with the main reinforcement, and then concrete is poured at the joint of the steel pipe column and the reinforcement cage to form an outer concrete member, so that the steel pipe column and the cast-in-place pile can be stably connected, and the shearing resistance of the joint is improved. In addition, a shear nail group extending into the inner concrete member is arranged in the steel pipe column, so that the steel pipe column is effectively prevented from being buckled and damaged, the structure is reliable, and construction is facilitated.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the utility model, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.
FIG. 1 is a front sectional view (diameter variable steel pipe column) of an embodiment of the present invention;
FIG. 2 is a front sectional view (steel pipe column constant diameter) of another embodiment of the present invention;
FIG. 3 is a schematic view of the utility model taken at section A-A in FIG. 1;
FIG. 4 is a schematic view of the utility model taken at section B-B of FIG. 1;
FIG. 5 is a schematic view of the utility model taken at section C-C of FIG. 1;
fig. 6 is a schematic view of the utility model taken on the cross-section D-D in fig. 1.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 6, the steel pipe column and cast-in-place pile connection structure according to the embodiment of the present invention includes a cast-in-place pile 200 and a steel pipe column 100. The cast-in-place pile 200 includes a pile foundation concrete member 203 and a reinforcement cage, the lower portion of the reinforcement cage is located in the pile foundation concrete member 203, the upper portion of the reinforcement cage extends out of the top surface of the pile foundation concrete member 203, and the lower portion of the steel pipe column 100 extends into the reinforcement cage and is connected with the reinforcement cage. The upper portion outside of steel reinforcement cage is equipped with outer concrete member 107, and outer concrete member 107 parcel steel-pipe column 100 and the junction of steel reinforcement cage makes the connection of steel-pipe column 100 and steel reinforcement cage firm, has ensured the effective transmission of moment of flexure, has strengthened connected node's ability of shearing, and the joint construction is succinct, and it is clear to pass power route, and stable in structure is reliable.
In some embodiments, the reinforcement cage includes the spiral stirrup 201 and a plurality of main reinforcements 202, the main reinforcements 202 are attached to the inner side of the spiral stirrup 201, and the main reinforcements 202 are arranged to improve the stability of the spiral stirrup 201 and prevent the spiral stirrup 201 from bending and deforming during construction. Specifically, the main ribs 202 are all parallel to the axial direction of the helical stirrup 201, ensuring that the helical stirrup 201 is not easily bent. The main ribs 202 are arranged at intervals along the circumferential direction of the spiral stirrup 201, and the main ribs 202 are arranged at equal intervals, so that the supporting force of the main ribs 202 on the spiral stirrup 201 is equal, and the stress of the spiral stirrup 201 is uniform. Further, to maintain the structural stability of the main reinforcement 202, the length of the main reinforcement 202 extending into the outer concrete member 107 is not less than 25 times the diameter of the main reinforcement 202.
The lower part of the steel pipe column 100 extends into the reinforcement cage, and the outer side of the steel pipe column 100 is connected with the main reinforcement 202. Optionally, the outer side wall of the steel pipe column 100 is welded with the main rib 202 on the two sides, so that the anchoring performance of the steel pipe column 100 is enhanced, the required joint section length is shortened, the bending moment can be effectively transmitted, the biasing load action of the pier stud axial compressor can be effectively borne, and the connection between the steel pipe column 100 and the cast-in-place pile 200 is firmer. At least one layer of shear nail group 104 arranged annularly is arranged in the steel pipe column 100, the shear nail group 104 comprises more than two shear nails, and an inner concrete component 106 is filled in the steel pipe column 100. The shear nail group 104 enables the steel pipe column 100 and the inner concrete member 106 to be stressed together, so that buckling damage of the steel pipe column 100 is effectively avoided, the structure is reliable, and construction is convenient. Further, the number of the shear pin groups 104 is three or more, each shear pin group 104 is arranged along the axial direction of the steel pipe column 100, and the shear pin groups 104 are equally spaced. The multiple shear nail sets 104 tightly connect the steel pipe column 100 and the inner concrete member 106 in the axial direction, so as to better maintain the structural stability of the steel pipe column 100 and prevent bending. Optionally, the inner concrete member 106 is a micro-expansive concrete member, preventing a gap from being generated between the inner concrete member 106 and the steel pipe column 100.
As an alternative embodiment, referring to fig. 2, the steel pipe column 100 is an equal-diameter column. As another alternative, in this embodiment, referring to fig. 1, the steel pipe column 100 includes a main body section 101, a reducer section 102, and a connecting section 103, which are connected in sequence from top to bottom, and the connecting section 103 is connected to the cast-in-place pile 200. The main body section 101 and the connecting section 103 are connected through the reducer section 102, the whole diameter of the steel pipe column 100 can be changed without adapting to the diameter of a pile foundation, and only the diameter of the main body section 101 needs to be changed, so that the steel pipe column has good economical efficiency and universality. Specifically, the diameter of the main body section 101 is not equal to the diameter of the connection section 103, the diameter of the upper end of the reducer section 102 is equal to the diameter of the main body section 101, and the diameter of the lower end of the reducer section 102 is equal to the diameter of the connection section 103.
Further, in order to enhance the structural stability of the steel pipe column 100, annular stiffening plates 105 are respectively disposed at the inner sides of both ends of the reducer section 102. Taking the connection of the main body segment 101 and the reducer segment 102 as an example, the stiffener plate 105 connects the main body segment 101 and the reducer segment 102, thereby reinforcing the connection stability of the main body segment 101 and the reducer segment 102.
In some embodiments, the top surface of the outer concrete member 107 is at least 20cm above the design ground level. Optionally, the top of the bored pile 200 is at ground level, avoiding excavation of the bottom surface. Because the outer concrete member 107 eminence bottom surface is a certain height, because the bottom of steel-pipe column 100 can be protected to outer concrete member 107, avoids the steel construction to receive the rainwater corruption, improves the durability.
The construction process of the utility model is as follows:
firstly, a reinforcement cage is installed in a pile foundation hole, the upper part of the reinforcement cage extends out of the ground, and concrete is poured into the pile foundation hole to form a pile foundation concrete member 203. Meanwhile, in a factory, the reinforcing plates 105 are welded at two ends of the reducing section 102 in the prefabricated steel pipe column 100, the shear nail groups 104 are welded in the connecting section 103, and then the main body section 101, the reducing section 102 and the connecting section 103 are welded firmly in sequence to form the steel pipe column 100 and are transported to the site. After the pile foundation concrete member 203 is solidified, the steel pipe column 100 is hoisted to be coaxial and placed in the center with the cast-in-place pile 200, the lower portion of the steel pipe column 100 and the main reinforcement 202 are welded on two sides, then a formwork is erected to surround the joint of the steel pipe column 100 and the reinforcement cage, fine aggregate concrete is poured into the formwork to form the outer concrete member 107, and micro-expansion concrete is poured into the steel pipe column 100 to form the inner concrete member 106.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the utility model as set forth in the claims appended hereto.
Claims (9)
1. The utility model provides a steel-pipe column and bored concrete pile connection structure which characterized in that includes:
the cast-in-place pile comprises a pile foundation concrete member and a reinforcement cage, wherein the lower part of the reinforcement cage is positioned in the pile foundation concrete member, the upper part of the reinforcement cage extends out of the top surface of the pile foundation concrete member, the reinforcement cage comprises a spiral stirrup and a plurality of main reinforcements, and the main reinforcements are attached to the inner side of the spiral stirrup;
the steel pipe column, the lower part of steel pipe column stretches into in the steel reinforcement cage, the outside of steel pipe column with the owner muscle is connected, be equipped with the shear force nail group that at least one deck hoop was arranged in the steel pipe column, the shear force nail group includes two above shear force nails, the steel pipe column intussuseption is filled with interior concrete component, the upper portion outside of steel reinforcement cage is equipped with outer concrete component, outer concrete component parcel the steel pipe column with the junction of steel reinforcement cage.
2. The steel-pipe column and cast-in-place pile connection structure according to claim 1, characterized in that: the main ribs are arranged at intervals along the circumferential direction of the spiral stirrup, and the main ribs are arranged at equal intervals.
3. The steel pipe column and cast-in-place pile connecting structure according to claim 1 or 2, characterized in that: the main ribs are all parallel to the axial direction of the spiral stirrup.
4. The steel-pipe column and cast-in-place pile connection structure according to claim 1, characterized in that: the number of the shear screw groups is more than three, each shear screw group is arranged along the axial direction of the steel pipe column, and the shear screw groups are spaced at equal intervals.
5. The steel-pipe column and cast-in-place pile connection structure according to claim 1, characterized in that: the inner concrete member is a micro-expansion concrete member.
6. The steel-pipe column and cast-in-place pile connection structure according to claim 1, characterized in that: the steel pipe column comprises a main body section, a reducer section and a connecting section which are sequentially connected from top to bottom, the diameter of the main body section is not equal to that of the connecting section, the diameter of the upper end of the reducer section is equal to that of the main body section, and the diameter of the lower end of the reducer section is equal to that of the connecting section.
7. The steel-pipe column and bored concrete pile connection structure according to claim 6, characterized in that: and annular stiffening plates are respectively arranged on the inner sides of the two ends of the reducing section.
8. The steel-pipe column and cast-in-place pile connection structure according to claim 1, characterized in that: the length of the main reinforcement extending into the outer concrete member is not less than 25 times of the diameter of the main reinforcement.
9. The steel-pipe column and cast-in-place pile connection structure according to claim 1, characterized in that: the top surface of the outer concrete member is at least 20cm above the design ground elevation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120864960.8U CN216474470U (en) | 2021-04-25 | 2021-04-25 | Steel-pipe column and bored concrete pile connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120864960.8U CN216474470U (en) | 2021-04-25 | 2021-04-25 | Steel-pipe column and bored concrete pile connection structure |
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| Publication Number | Publication Date |
|---|---|
| CN216474470U true CN216474470U (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120864960.8U Active CN216474470U (en) | 2021-04-25 | 2021-04-25 | Steel-pipe column and bored concrete pile connection structure |
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| CN (1) | CN216474470U (en) |
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2021
- 2021-04-25 CN CN202120864960.8U patent/CN216474470U/en active Active
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