CN219011195U

CN219011195U - PHC composite filling pile

Info

Publication number: CN219011195U
Application number: CN202221911369.4U
Authority: CN
Inventors: 曹明辉; 谢志威; 赵举; 胡智峰
Original assignee: China Construction Fifth Engineering Bureau Co Ltd
Current assignee: China Construction Fifth Engineering Bureau Co Ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2023-05-12
Anticipated expiration: 2032-07-22

Abstract

The utility model discloses a PHC composite filling pile which is arranged in a construction stratum drilling hole, wherein the PHC composite pile comprises a PHC core pile, the section of the PHC core pile is annular, a spiral flange is wound on the surface of the PHC core pile, the longitudinal section outline of the spiral flange is in a semicircular shape protruding outwards, a plurality of vertical strip flanges which are vertically arranged are arranged on the surface of the PHC core pile, each vertical strip flange is uniformly distributed along the circumferential direction of the PHC core pile, the cross section outline of each vertical strip flange is in a semicircular shape protruding outwards, the spiral flange and the radius of each vertical strip flange are identical, so that intersecting states are formed at the intersecting positions of the spiral flange and the vertical strip flanges, and two adjacent sections of local sections of the spiral flange and two adjacent vertical strip flanges jointly enclose a filling pit. The utility model has higher compressive strength and longer service life.

Description

PHC composite filling pile

Technical Field

The utility model relates to a bored concrete pile, in particular to a PHC composite bored concrete pile.

Background

PHC pile (the prestressed high-intensity concrete prestressed high-strength concrete) is made up by adopting advanced processes of pretensioning method prestressing, adding grinding fine material and high-effective water-reducing agent, etc. the concrete is undergone the processes of centrifugal dewatering compaction and forming, and then undergone the processes of normal pressure and high-pressure steam curing so as to obtain the invented slender hollow prefabricated concrete member with uniform cross section.

The PHC pipe pile has the advantages of low construction cost, easy control of construction quality, short construction period, wide practicability, convenient detection and the like, and is suitable for geological conditions of deep bedrock burial, strong weathered rock stratum or weathered residual soil layer thickness. Accordingly, PHC piles are increasingly being appreciated and adopted by design homes, owners and vast engineering technicians, and have been widely used in many areas.

However, for some construction strata mainly containing fine sand and silt and having local calcium nodules, the single pile bearing capacity of the PHC pipe pile is insufficient, and the industry is in need of solving the problems.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model aims to provide the PHC composite filling pile which has higher compressive strength and longer service life.

The utility model adopts the following technical scheme:

the PHC composite filling pile is arranged in a construction stratum drilling hole and comprises a PHC core pile, the section of the PHC core pile is annular, a spiral flange is wound on the surface of the PHC core pile, the longitudinal section outline of the spiral flange is in an outward protruding semicircle shape, a plurality of vertical strip flanges are arranged on the surface of the PHC core pile, the vertical strip flanges are uniformly distributed along the periphery of the PHC core pile, the cross section outline of the vertical strip flanges is in an outward protruding semicircle shape, the radius of the spiral flange is the same as that of the vertical strip flanges, so that a penetration state is formed at the intersection of the spiral flange and the vertical strip flanges, two adjacent sections of the local section of the spiral flange and the adjacent two adjacent vertical strip flanges enclose a filling pit together, the PHC core pile is inserted in the construction stratum drilling hole, an outer pile filling material is filled in a gap between the outer wall of the PHC core pile and the inner wall of the construction stratum, and the outer pile filling material is a mixture of broken stone, cement, sand and water.

Specifically, a reinforcing steel bar frame is arranged in the PHC core pile, and concrete wraps the reinforcing steel bar frame to form the PHC core pile.

Specifically, the radii of the spiral flange and the vertical strip flange are 2cm-6cm.

Specifically, the pitch of the spiral flange is 0.3m-0.6m.

Specifically, the number of the vertical strip flanges is six, and the six vertical strip flanges are uniformly distributed along the circumferential direction of the PHC core pile.

Specifically, the PHC core pile has a thickness of 5cm-12cm.

Specifically, the PHC core pile has an inner diameter of 20cm-30cm.

Specifically, the distance between the outer wall of the PHC core pile and the inner wall of the construction stratum drilling hole is 8cm-12cm.

Compared with the prior art, the utility model has the beneficial effects that:

the PHC core pile is provided with a spiral flange in a winding way, and the longitudinal section outline of the spiral flange is a semicircle protruding outwards. The cross section profile of the vertical strip flange is a semicircle protruding outwards, and the radius of the spiral flange is the same as that of the vertical strip flange, so that a intersecting state is formed at the intersection of the spiral flange and the vertical strip flange. The local sections of the adjacent two sections of the spiral flanges and the adjacent two vertical strip flanges jointly enclose a filling pit.

The PHC core pile is inserted into the construction stratum borehole, and the outer pile injection material is filled in the PHC core pile and in the gap between the outer wall of the PHC core pile and the inner wall of the construction stratum borehole, and is a mixture mixed by adding water and mixing broken stone, stone dust, sand and fly ash. And then, extending a vibrating tube between the inner wall of the drilled hole and the outer wall of the PHC core pile so as to fill the filling pits with the filling materials of the outer pile.

After the outer pile injection is solidified, the outer pile injection is equivalent to each filling pit locally embedded in the surface of the PHC core pile, so that the PHC core pile and the outer pile injection are organically combined. In the process of continuously bearing load of the follow-up composite pile, the joint surface of the outer pile injection material and the PHC core pile is not easy to separate due to load due to the organic and compact combination of the outer pile injection material and the PHC core pile, so that the integrity of the composite pile is improved, the compressive strength and the service life of the composite pile are improved, and the composite pile can be applied to some construction strata mainly comprising fine sand and silt and having local calcareous tuberculosis.

The cross section profiles of the spiral flange and the vertical strip flange are semicircular and have the same radius, so that the intersection of the spiral flange and the vertical strip flange forms a intersecting state, the radial effective sizes of the inner walls of the filling pits are consistent, and the outer pile injection materials can flow into the filling pits more easily.

Drawings

FIG. 1 is a partial view of a PHC composite cast-in-place pile;

FIG. 2 is a partial view of a cross-sectional view of a PHC composite cast-in-place pile;

fig. 3 is a perspective view of the reinforcing bar frame.

In the figure: 1. a spiral flange; 2. a vertical bar flange; 3. filling a pit; 4. a steel bar frame.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.

Referring to fig. 1 to 3, a PHC composite cast-in-place pile is provided for drilling a construction stratum. The PHC composite pile comprises a PHC core pile, and the section of the PHC core pile is annular. The PHC core pile is provided with a spiral flange 1 around the surface, and the longitudinal section outline of the spiral flange 1 is a semicircle protruding outwards. The PHC core pile is provided with a plurality of vertical strip flanges 2 which are vertically arranged on the surface, and the vertical strip flanges 2 are uniformly distributed along the circumferential direction of the PHC core pile.

The cross-sectional profile of the vertical bar flange 2 is a semicircular shape protruding outwards, and the radius of the spiral flange 1 is the same as that of the vertical bar flange 2, so that a intersecting state is formed at the intersection of the two. The local sections of the adjacent two sections of spiral flanges 1 and the adjacent two vertical strip flanges 2 jointly enclose a filling pit 3.

Referring to FIG. 2, PHC core pile is inserted into the construction stratum borehole, and the outer pile material is filled in the PHC core pile and the gap between the outer wall of PHC core pile and the inner wall of construction stratum boreholeCement mixtures, i.e.The filling pit 3 is filled with the outer pile filling material which is a mixture of crushed stone, stone dust, sand and fly ash mixed with cement and water.

Specifically, a reinforcing steel bar frame 4 is arranged in the PHC core pile, and concrete wraps the reinforcing steel bar frame 4 to form the PHC core pile.

Specifically, the radii of the spiral flange 1 and the vertical bar flange 2 are 2cm-6cm.

Specifically, the pitch of the helical flange 1 is 0.3m-0.6m.

Specifically, the number of the vertical strip flanges 2 is six, and the six vertical strip flanges 2 are uniformly distributed along the circumferential direction of the PHC core pile.

Specifically, the PHC core pile has a thickness of 5cm-12cm.

Specifically, the PHC core pile has an inner diameter of 20cm-30cm.

Specifically, the distance between the outer wall of the PHC core pile and the inner wall of the drilled hole of the construction stratum is 8cm-12cm.

The PHC composite filling pile has the technical effects that:

the PHC core pile is provided with a spiral flange 1 around the surface, and the longitudinal section outline of the spiral flange 1 is a semicircle protruding outwards. The cross-sectional profile of the vertical bar flange 2 is a semicircular shape protruding outwards, and the radius of the spiral flange 1 is the same as that of the vertical bar flange 2, so that a intersecting state is formed at the intersection of the two. The local sections of the adjacent two sections of spiral flanges 1 and the adjacent two vertical strip flanges 2 jointly enclose a filling pit 3.

The PHC core pile is inserted into the construction stratum borehole, and the outer pile injection material is filled in the PHC core pile and in the gap between the outer wall of the PHC core pile and the inner wall of the construction stratum borehole, and is a mixture mixed by adding water and mixing broken stone, stone dust, sand and fly ash. And then, a vibrating tube is extended between the inner wall of the drilled hole and the outer wall of the PHC core pile, so that the filling material of the outer pile is filled in each filling pit 3.

After the outer pile injection is solidified, the outer pile injection corresponds to each filler pit 3 which is locally embedded in the surface of the PHC core pile, so that the PHC core pile and the outer pile injection are organically combined. In the process of continuously bearing load of the follow-up composite pile, the joint surface of the outer pile injection material and the PHC core pile is not easy to separate due to load due to the organic and compact combination of the outer pile injection material and the PHC core pile, so that the integrity of the composite pile is improved, the compressive strength and the service life of the composite pile are improved, and the composite pile can be applied to some construction strata mainly comprising fine sand and silt and having local calcareous tuberculosis.

The cross section profiles of the spiral flange 1 and the vertical strip flange 2 are semicircular and have the same radius, so that the intersection of the spiral flange 1 and the vertical strip flange forms a intersecting state, the radial effective sizes of the inner walls of the filling pits 3 are consistent, and the outer pile injection material can flow into the filling pits 3 more easily.

The radius of the spiral flange 1 and the radius of the vertical strip flange 2 are both 2cm-6cm, the thickness of the PHC core pile is 5cm-12cm, the inner diameter of the PHC core pile is 20cm-30cm, and the distance between the outer wall of the PHC core pile and the inner wall of a construction stratum drilling hole is 8cm-12cm, so that the structural size of the PHC composite filling pile is more reasonable, the balance between compressive strength and material consumption can be achieved, and the maximum construction benefit and engineering benefit are achieved.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims

1. PHC composite bored concrete pile locates construction stratum drilling, its characterized in that: the PHC composite filling pile comprises a PHC core pile, the section of the PHC core pile is annular, a spiral flange is wound on the surface of the PHC core pile, the longitudinal section profile of the spiral flange is a semicircular shape protruding outwards, a plurality of vertical strip flanges which are arranged vertically are arranged on the surface of the PHC core pile, the vertical strip flanges are uniformly distributed along the circumferential direction of the PHC core pile, the cross section profile of each vertical strip flange is a semicircular shape protruding outwards, the radius of the spiral flange is the same as that of the vertical strip flange, so that a intersecting state is formed at the intersecting position of the spiral flange and the vertical strip flange, and two adjacent vertical strip flanges are uniformly distributed along the circumferential direction of the PHC core pileThe section the local section of spiral flange and two adjacent vertical strip flanges enclose into the filler hole jointly, PHC core pile insert in the construction stratum drilling, PHC core pile's inside and PHC core pile's outer wall with the space between the construction stratum drilling inner wall is filled with outer stake notes material, outer stake notes material isCement admixtureAnd filling the filling pits with the outer pile filling materials.

2. PHC composite filling pile according to claim 1, characterized in that: and a reinforcing steel bar frame is arranged in the PHC core pile, and concrete wraps the reinforcing steel bar frame to form the PHC core pile.

3. PHC composite filling pile according to claim 1, characterized in that: the radius of the spiral flange and the radius of the vertical strip flange are both 2cm-6cm.

4. PHC composite filling pile according to claim 1, characterized in that: the pitch of the spiral flange is 0.3m-0.6m.

5. PHC composite filling pile according to claim 1, characterized in that: the number of the vertical strip flanges is six, and the six vertical strip flanges are uniformly distributed along the circumferential direction of the PHC core pile.

6. PHC composite filling pile according to claim 1, characterized in that: the PHC core pile has a thickness of 5cm-12cm.

7. PHC composite filling pile according to claim 1, characterized in that: the PHC core pile has an inner diameter of 20cm-30cm.

8. PHC composite filling pile according to claim 1, characterized in that: the distance between the outer wall of the PHC core pile and the inner wall of the construction stratum drilling hole is 8cm-12cm.