CN218990140U

CN218990140U - Prestressed ultra-high strength concrete thick-wall grouting pipe pile

Info

Publication number: CN218990140U
Application number: CN202320088766.4U
Authority: CN
Inventors: 周海军; 郭谷良
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-01-31
Filing date: 2023-01-31
Publication date: 2023-05-09
Anticipated expiration: 2033-01-31

Abstract

The utility model discloses a prestressed ultra-high-strength concrete thick-wall grouting pipe pile, which relates to the technical field of pile foundation reinforcement of soft soil foundations and solves the technical problems that the prior grouting pipe needs to be bound on site to influence the working efficiency and grouting quality; the grouting pipe can be embedded in a factory, grouting can be started only after the grouting prestressed concrete pipe pile is placed in the hole for correction at a construction site, the construction time is effectively shortened, the grouting quality is ensured, and the mechanical drilling grouting pile-planting process of the prestressed concrete pipe pile is simpler and the quality is ensured.

Description

Prestressed ultra-high strength concrete thick-wall grouting pipe pile

Technical Field

The utility model relates to the technical field of pile foundation reinforcement of soft soil foundations, in particular to a prestressed ultra-high-strength concrete thick-wall grouting pipe pile.

Background

The pile foundation is a deep foundation consisting of piles and pile caps (called caps for short) connected with the tops of the piles or a single pile foundation connected with the piles by the piles. If the pile body is buried in the soil, the bottom surface of the bearing platform is contacted with the soil, the pile body is called a low bearing platform pile foundation; if the pile body is exposed to the ground and the pile cap bottom is above the ground, the pile body is called a high pile cap pile foundation, and the building pile foundation is usually a low pile cap pile foundation, and the pile foundation is widely applied to high-rise buildings.

Along with the rapid development of the modern building industry and the breakthrough and continuous progress of scientific technology, pile foundations are gradually developed into reinforced concrete piles and steel piles from the initial wood piles, and meanwhile, the construction method and construction machinery of the pile foundations are also developed to a great extent. The pile-making technology is also greatly changed in order to meet the modern building quality standards. Prefabricated pipe piles are produced in professional modern factories and have mature production processes and complete quality management systems, so that the prefabricated pipe piles are widely used nationwide.

The mechanical (rotary digging) drilling grouting pile planting technology for the prestressed concrete pipe pile is a pile foundation construction technology for forming a composite pile by combining the prestressed concrete pipe pile with special cement-based anchor slurry, and effectively solves the technical problems of high bearing capacity of a single pile, deep burial of a hard rock layer and existence of a geological complex site. The success or failure of grouting in the process determines the bearing capacity of the pile foundation, and is the most important link. The existing grouting technology for mechanical (rotary drilling) drilling grouting pile-planting of prestressed concrete pipe piles adopts a grouting method, namely two hard plastic pipes with the diameter of 40mm are bound on two symmetrical sides of a pipe pile, and grouting is carried out after the pipe pile is placed into a hole. The method has great disadvantages: firstly, the grouting pipe needs to be bound on site, which can affect the working efficiency; secondly, the diameter of the mechanical hole is only 100mm larger than the diameter of the pipe pile, the space is limited, the pipe pile of the binding grouting pipe can collide with soil around the hole in the process of lowering, the end part of the grouting pipe can not be guaranteed to be at the bottom of the hole, and therefore grouting quality can not be guaranteed. It is therefore urgent and necessary to develop a prestressed ultra-high strength concrete thick-wall grouting pipe pile, which is simply called "UHCZJ".

Disclosure of Invention

The utility model aims at: in order to solve the problems that the existing grouting pipe needs to be bound on site and influences the working efficiency and grouting quality, the prestressed ultra-high-strength concrete thick-wall grouting pipe pile is provided.

The technical scheme adopted by the utility model is as follows: the utility model provides a prestressing force ultra-high strength concrete thick wall slip casting tubular pile, includes hollow pile body, be provided with the pipeline in the annular wall of pile body is interior, the top of pile body is beaten to the one end of this pipeline, and the bottom side of pile body is beaten to the other end of pipeline be fan-shaped obtuse angle alpha.

The application process of the utility model is as follows: when the grouting pile is used, a hole with the diameter being 100mm larger than the diameter of the pile is formed by mechanically punching, the concrete thick-wall grouting pile is placed into the hole by using equipment, the concrete thick-wall grouting pile is positioned at the center of the hole by adjusting, the pressure grouting equipment is connected, the pressure grouting equipment is communicated with a pipeline for grouting, until grouting is flush with the top of the concrete thick-wall grouting pile, and daily maintenance is carried out on the foundation pile after the pressure grouting equipment is removed.

Pile body includes concrete pile body, spiral stirrup, prestressing tendons, fixed muscle, the equipartition has the prestressing tendons along circumference direction in the concrete pile body, and this prestressing tendons passes through spiral stirrup to be connected, and wherein, the pipeline passes through fixed muscle to be connected with the prestressing tendons, and reinforced concrete structure makes stable in structure, toughness and intensity all improve to some extent.

The pipeline adopts the welded steel pipe with the diameter of 36mm and the wall thickness of 2mm, the steel pipe is Q195-Q235, the steel pipe can bear larger pressure and is not deformed, the pile body is not damaged due to the fact that the grouting pressure is too large in the grouting process, and the quality of the pile body is improved.

The pile body is one of UHC500-C105-150AB, UHC600-C105-180AB and UHC700-C105-130AB, when UHC500-C105-150AB is selected, the hollow diameter of the pile body is 200mm, the annular wall thickness of the pile body is 150 mm, when UHC600-C105-180AB is selected, the hollow diameter of the pile body is 240mm, the annular wall thickness of the pile body is 180 mm, and when UHC700-C105-130AB is selected, the hollow diameter of the pile body is 440mm, and the annular wall thickness of the pile body is 130 mm; the pipeline is located in the middle position of the annular wall thickness, wherein the distance between the bottom outlet end and the bottom end of the pipeline is about 500mm, the inner wall of the top of the pipeline is tapped, and the inner wall of the upper part of the steel pipe is used for connecting pressure grouting equipment.

The sector obtuse angle alpha is 110 DEG-125 DEG, and the bottom pipeline is arc-shaped, so that grouting is smoother.

The pipeline equidistance is provided with 2, and every meter of welding of this pipeline axial direction is fixed muscle, and this fixed muscle welds with prestressing tendons, and 2 pipelines can both ends slip casting simultaneously, makes the slip casting more even, and fixed 's setting makes pipeline be difficult for deformation to walk the position, influences overall structure.

The concrete pile body is formed by connecting spiral stirrups, prestressed tendons, fixing tendons and pipelines, and the concrete is cast-in-situ to form an integral pile body, so that the structure is stable, and the subsequent construction is more convenient and quicker.

The two ends of the pile body are respectively provided with a flange end part, the flange end parts are made of metal materials, the metal materials are convenient to process and can be processed into shapes convenient for equipment connection, and the strength and the hardness can meet the hammering requirements of construction.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

the grouting pipe can be embedded in a factory, grouting can be started only after grouting prestressed ultra-high strength concrete pipe piles are placed in holes for correction at a construction site, the construction time is effectively shortened, the grouting quality is ensured, and the mechanical (rotary digging) drilling grouting pile-planting process of the prestressed concrete pipe piles is simpler and the quality is ensured.

Drawings

The utility model will now be described by way of example and with reference to the accompanying drawings in which:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

marked in the figure as: the pile comprises a 1-pile body, a 2-pipeline, a 3-flange end part, a 11-concrete pile body, 12-spiral stirrups, 13-prestressed tendons and 14-fixed tendons.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

As shown in fig. 1-2, the embodiment provides a prestressed ultra-high strength concrete thick-wall grouting pipe pile, which comprises a hollow pile body 1, wherein a pipeline 2 is axially arranged in the annular wall of the pile body 1, one end of the pipeline 2 is driven through the top of the pile body 1, and the other end of the pipeline 2 is driven through the bottom side of the pile body 1 at a sector obtuse angle alpha.

The application process of the utility model is as follows: when the grouting pile is used, a hole with the diameter being 100mm larger than the diameter of the pile is formed by mechanically punching, the concrete thick-wall grouting pile is placed into the hole by using equipment, the concrete thick-wall grouting pile is positioned at the center of the hole by adjusting, the pressure grouting equipment is connected, the pressure grouting equipment is communicated with the pipeline 2 for grouting until the grouting is flush with the top of the concrete thick-wall grouting pile, and the foundation pile is subjected to daily maintenance after the pressure grouting equipment is removed.

Example 2

On the basis of embodiment 1, pile body 1 includes concrete pile body 11, spiral stirrup 12, prestressing tendons 13, fixed muscle 14, prestressing tendons 13 have been equipartition along the circumferencial direction in the concrete pile body 11, and this prestressing tendons 13 passes through spiral stirrup 12 to be connected, and wherein, pipeline 2 passes through fixed muscle 14 to be connected with prestressing tendons 13, and reinforced concrete structure makes stable in structure, toughness and intensity all improve.

Example 3

On the basis of the embodiment 1, the pipeline 2 adopts welded steel pipes with the diameter of 36mm and the wall thickness of 2mm, the steel pipes are made of Q195-Q235, the steel pipes can bear larger pressure and are not deformed, the pipeline 2 is not deformed to damage the pile body due to overlarge grouting pressure in the grouting process, and the quality of the pile body is improved.

Example 4

Based on the embodiment 1, the pile body 1 is one of UHC500-C105-150AB, UHC600-C105-180AB and UHC700-C105-130AB, when UHC500-C105-150AB is selected, the hollow diameter of the pile body 1 is 200mm, the annular wall thickness of the pile body 1 is 150 mm, when UHC600-C105-180AB is selected, the hollow diameter of the pile body 1 is 240mm, the annular wall thickness of the pile body 1 is 180 mm, and when UHC700-C105-130AB is selected, the hollow diameter of the pile body 1 is 440mm, and the annular wall thickness of the pile body 1 is 130 mm; the pipeline 2 is positioned at the middle position of the annular wall thickness, wherein the distance between the bottom outlet end and the bottom end of the pipeline 2 is about 500mm, the top inner wall of the pipeline 2 is tapped, and the upper inner wall of the steel pipe is used for connecting pressure grouting equipment.

Example 5

On the basis of the embodiment 1, the sector obtuse angle alpha is 110 DEG-125 DEG, and the bottom pipeline 2 is arc-shaped, so that grouting is smoother.

Example 6

On the basis of

embodiment

1, 2 equidistant fixed tendons 14 are arranged on the pipeline 2, each meter of the pipeline 2 is welded with one fixed tendon 14 in the axial direction, the fixed tendons 14 are welded with the prestressed tendons 13, two ends of the 2 pipelines 2 can be simultaneously injected, so that the injection is more uniform, and the fixed arrangement ensures that the pipeline 2 is not easy to deform and move, and the integral structure is influenced.

Example 7

On the basis of the embodiment 2, the concrete pile body 11 is formed by connecting the spiral stirrup 12, the prestressed tendons 13, the fixed tendons 14 and the pipeline 2 into a framework, and then the concrete is cast-in-situ into an integral pile body, so that the structure is stable, and the subsequent construction is more convenient and quicker.

Example 8

On the basis of the embodiment 1, the two ends of the pile body 1 are respectively provided with a flange end part 3, the flange end parts 3 are made of metal materials, the metal materials are convenient to process and can be processed into shapes convenient for equipment connection, and the strength and the hardness can meet the hammering requirements of construction.

Claims

1. The utility model provides a prestressing force super high strength concrete thick wall slip casting tubular pile, includes hollow pile body (1), its characterized in that, the annular wall of pile body (1) is provided with pipeline (2) in the axial, and the top of pile body (1) is driven to the one end of this pipeline (2), and the bottom side of pile body (1) is driven to the other end of pipeline (2) is fan-shaped obtuse angle alpha.

2. The prestressed ultra-high-strength concrete thick-wall grouting pipe pile according to claim 1, wherein the pile body (1) comprises a concrete pile body (11), spiral stirrups (12), prestressed tendons (13) and fixing tendons (14), the prestressed tendons (13) are uniformly distributed in the concrete pile body (11) along the circumferential direction, the prestressed tendons (13) are connected through the spiral stirrups (12), and the pipeline (2) is connected with the prestressed tendons (13) through the fixing tendons (14).

3. The prestressed ultra-high-strength concrete thick-wall grouting pipe pile according to claim 1, wherein the pipeline (2) is a welded steel pipe with the diameter of 36mm and the wall thickness of 2 mm.

4. The prestressed ultra-high-strength concrete thick-wall grouting pipe pile according to claim 1, wherein the pile body (1) is one of UHC500-C105-150AB, UHC600-C105-180AB and UHC700-C105-130AB, when UHC500-C105-150AB is selected, the hollow diameter of the pile body (1) is 200mm, the annular wall thickness of the pile body (1) is 150 mm, when UHC600-C105-180AB is selected, the hollow diameter of the pile body (1) is 240mm, the annular wall thickness of the pile body (1) is 180 mm, when UHC700-C105-130AB is selected, the hollow diameter of the pile body (1) is 440mm, and the annular wall thickness of the pile body (1) is 130 mm; the pipe (2) is located at an intermediate position of the thickness of the annular wall, wherein the bottom outlet end of the pipe (2) is spaced from the bottom end by about 500mm, and the top inner wall of the pipe (2) is tapped.

5. The prestressed ultra-high strength concrete thick-wall grouting pipe pile of claim 1, wherein the sector obtuse angle α is 110 ° -125 °.

6. The prestressed ultra-high-strength concrete thick-wall grouting pipe pile according to claim 1, wherein 2 pipelines (2) are equidistantly arranged, one fixing rib (14) is welded in each meter of the axial direction of the pipeline (2), and the fixing rib (14) is welded with the prestressed rib (13).

7. The prestressed ultra-high-strength concrete thick-wall grouting pipe pile according to claim 2, wherein the concrete pile body (11) is formed by connecting spiral stirrups (12), prestressed tendons (13), fixing tendons (14) and a pipeline (2) into a framework, and then casting concrete into an integral pile body.

8. The prestressed ultra-high-strength concrete thick-wall grouting pipe pile according to claim 1, wherein the two ends of the pile body (1) are respectively provided with a flange end part (3), and the flange end parts (3) are made of metal materials.