CN214423141U

CN214423141U - One-step forming structure of pier column and pile foundation with pile casing

Info

Publication number: CN214423141U
Application number: CN202120419704.8U
Authority: CN
Inventors: 潘本金; 任万鹏; 朱其涛; 贾旭斌; 陈超; 秦杰
Original assignee: Shaanxi Road & Bridge Co ltd
Current assignee: Shaanxi Road & Bridge Co ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-10-19
Anticipated expiration: 2031-02-26

Abstract

The application discloses pier stud of a section of thick bamboo and one shot forming structure of pile foundation are protected in area relates to pier stud construction operation technical field for need artifical cutting, the technical problem of maintaining after solving among the prior art pier stud and pouring. The structure comprises a bridge, a pile foundation, a pier stud and a pile casing. The pier columns are connected with the pile foundations, and the bridge is erected on the tops of the cover beams of the plurality of pier columns; the pile casing is sleeved on the pier stud. This structure has adopted the position at the pier stud pre-buried with the section of thick bamboo that protects of pier stud size adaptation, confirms pier stud height and appearance, carries out the drilling of pile foundation again and digs to carry out concrete placement to pile foundation and pier stud, effectively solved the pier stud and pour the back and need cut a hole once more, the technical problem of renovation appearance, and then realized pier stud and pile foundation and once only pour the shaping, work efficiency improves and the appearance is pleasing to the eye.

Description

One-step forming structure of pier column and pile foundation with pile casing

Technical Field

The application relates to the technical field of pier stud construction operation, in particular to a pier stud with a casing and a pile foundation one-step forming structure.

Background

The main crossing line of the K298+440 overpass bridge of the highway from Xunyi to Shaangan is a component of the national road 211, the upper structure of the bridge is a 18+32+18m prestressed concrete continuous box girder, the lower structure is a column type pile foundation, and the pier is a column type pile foundation.

The traditional construction method is integrated construction of in-situ pore-forming and pouring of reinforced concrete piles. Excavation is passed through in the later stage, exposes the pier stud part, and the surface irregularity part concrete is chiseled out to the rethread manual work, accomplishes the overline bridge cylinder through surface decoration, and the construction is troublesome, wastes time and energy, and the outward appearance effect is poor.

SUMMERY OF THE UTILITY MODEL

The embodiment of this application is through providing a pier stud and pile foundation's one shot forming structure of a section of thick bamboo is protected in area, has solved among the prior art pier stud and has pour the back and need artifical the excavation, and the technical problem of repairment has realized the one-time shaping of pouring of pier stud and pile foundation.

An embodiment of the utility model provides a pier stud and pile foundation's one shot forming structure of a section of thick bamboo is protected in area, include bridge, pile foundation, pier stud and protect a section of thick bamboo. The pier columns are connected with the pile foundations, and the bridge is erected on the tops of the cover beams of the plurality of pier columns; the pile casing is sleeved on the pier stud.

In one possible implementation mode, the one-step forming structure of the pier stud and the pile foundation with the casing further comprises a steel reinforcement framework; the steel reinforcement framework is uniformly arranged in the pile foundation and in the pier stud and penetrates through the pile foundation and the pier stud.

In one possible implementation, the pile foundation and the pier stud are both cast with concrete.

In one possible implementation, the casing is disposed below the horizon.

In one possible implementation, the outer wall of the casing is sprayed with a rust-proof paint.

In one possible implementation, the casing is made of steel.

In one possible implementation, the casing has a length of 750mm, a diameter of 1300mm and a wall thickness of 8 mm.

The embodiment of the utility model provides an in one or more technical scheme, following technological effect or advantage have at least:

the embodiment of the utility model provides a through having adopted the position at the pier stud pre-buried with the section of thick bamboo that protects of pier stud size adaptation, confirm the pier stud height and appearance, carry out the brill of pile foundation again and dig to carry out concrete placement to pile foundation and pier stud, effectively solved the pier stud and pour the back and need cut open once more, renovate the technical problem of appearance, and then realized pier stud and pile foundation and once only pour the shaping, work efficiency improves and the appearance is pleasing to the eye.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments of the present invention or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a one-step forming structure of a pier stud and a pile foundation with a casing according to an embodiment of the present disclosure;

fig. 2 is a partially enlarged schematic view of an one-step forming structure of a pier stud and a pile foundation with a casing according to an embodiment of the present application.

Reference numerals: 1-a bridge; 2-pile foundation; 3-pier stud; 31-protecting the cylinder; 4-horizon; 5, excavating a line; 6-steel reinforcement framework.

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 some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of describing the embodiments of the present invention and simplifying the description, but do 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. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

The embodiment provides a one-step forming structure of a pier stud with a casing and a pile foundation, and please refer to fig. 1 and fig. 2 in the attached drawings of the specification together.

The one-step forming structure of pier stud and pile foundation with pile casing comprises bridge 1, pile foundation 2, pier stud 3 and pile casing 31. The pier columns 3 are connected with the pile foundation 2, and the bridge 1 is erected on the tops of the bent caps of the plurality of pier columns 3; the pile casing 31 is sleeved on the pier stud 3.

In the engineering technical standard of China, no technical specification about the pier is provided, but in the project geotechnical investigation basic term standard of architecture, the definition about the pier is concrete column with the diameter generally larger than 800mm which is poured into the hole in the rock soil by manpower or machinery, also called large diameter pile.

The pile foundation 2 is a deep foundation consisting of piles and pile bearing platforms (bearing platforms for short) connected with the tops of the piles.

In this embodiment, pile foundation 2 is buried underground, pier 3 is connected at the top of pile foundation 2, and bridge 1 is supported to a plurality of pier 3. The pier stud 3 needs to be exposed out of the ground surface, so that certain requirements are imposed on the aesthetic property of the outer surface of the pier stud 3. The present embodiment improves on this technical problem by adding a casing 31 to the pier stud 3. The specific operation is as follows:

firstly, the pile casing 31 is driven into the position below the ground level 4 and the preset position of the pier stud 3, then the pile casing 31 is drilled downwards, and the excavation and hole cleaning of the aperture of the pile foundation 2 are completed. Further, the pile foundation 2 and the pier stud 3 are cast with concrete, and the pile foundation 2 and the pier stud 3 are integrally cast with concrete. In the pier column 3 part, the concrete and the pile casing 31 form a whole, and the outer surface of the pier column 3 is the pile casing 31. And subsequently excavating the earth on the ground, and when the pier stud 3 is exposed, refitting the surface of the pier stud 3 again is not needed. And then realized pier stud 3 and pile foundation 2 and once only pour the shaping, work efficiency improves and the appearance is pleasing to the eye. In addition to positioning, the casing 31 also has a protection orifice to prevent ground stones from falling into the hole; the mud pressure is maintained, and the hole collapse is prevented; controlling the elevation of the pile top; and preventing the backflow of the sediment in the drilling process.

The one-step forming structure of the pier stud and the pile foundation with the pile casing further comprises a steel reinforcement framework 6. The steel reinforcement framework 6 is uniformly arranged in the pile foundation 2 and the pier stud 3 and penetrates through the pile foundation 2 and the pier stud 3. After the aperture excavation of pier stud 3 and pile foundation 2 finishes, to downthehole lowering framework of steel reinforcement 6, and framework of steel reinforcement 6 is even sets up in protecting a section of thick bamboo 31, then carries out concrete placement, has good adhesion between concrete and the framework of steel reinforcement 6 to this compressive capacity and the tensile strength of reinforcing pier stud 3 and pile foundation 2.

The pile casing 31 is used for cast-in-situ bored pile construction, generally, the pile casing 31 is made of steel and is cylindrical, and in the embodiment, the length of the pile casing 31 is 750mm, the diameter is 1300mm, and the wall thickness is 8 mm. The pile casing 31 is used for determining a hole position needing drilling, the position of the pile casing 31 is determined on the horizon 4 according to the radius of the pile casing 31 by taking the center of the pier stud 3 as the center of a circle, pressure is applied, the pile casing 31 is driven into the ground to the designed elevation of the pier stud 3, and whether the pile casing 31 is vertical or not is checked. After concrete pouring is carried out, earthwork is excavated along the excavation line 5, the pier stud 3 and the protective cylinder 31 are exposed, soil on the outer surface of the protective cylinder 31 is cleaned, and then the outer wall of the protective cylinder 31 is sprayed with antirust paint.

The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure.

Claims

1. A one-step forming structure of a pier stud and a pile foundation with a pile casing is characterized by comprising a bridge (1), the pile foundation (2), a pier stud (3) and the pile casing (31);

the pier columns (3) are connected with the pile foundation (2), and the bridge (1) is erected at the tops of the cover beams of the pier columns (3);

the protective cylinder (31) is sleeved on the pier stud (3).

2. The one-step forming structure of the pier stud and the pile foundation with the casing according to claim 1, further comprising a steel reinforcement framework (6);

steel reinforcement framework (6) evenly set up in pile foundation (2) with in pier stud (3), and run through pile foundation (2) with pier stud (3).

3. The structure of one-step molding of pier stud and pile foundation with casing according to claim 1, wherein the pile foundation (2) and the pier stud (3) are each formed by pouring concrete.

4. The structure of one-step molding of pier stud and pile foundation with casing according to claim 1, wherein the casing (31) is disposed below the horizon (4).

5. The one-step forming structure of the pier stud and the pile foundation with the casing according to claim 1, wherein the outer wall of the casing (31) is sprayed with antirust paint.

6. The structure of one-step molding of pier stud and pile foundation with casing according to claim 1, wherein the casing (31) is made of steel.

7. The one-step forming structure of the pier stud and the pile foundation with the casing according to claim 1, wherein the casing (31) has a length of 750mm, a diameter of 1300mm and a wall thickness of 8 mm.