CN-224227775-U - Steel pipe screw pile

Abstract

The utility model provides a steel pipe spiral pile which comprises a steel pipe, a plurality of spiral blades encircling the steel pipe, a circular three-fork support fixedly connected with the top of the steel pipe, and the diameter of the three-fork support is larger than that of the spiral blades. The scheme of the utility model can solve the problem of lower horizontal bearing capacity of the steel pipe spiral pile after pile forming, and obviously improve the horizontal bearing capacity of the steel pipe spiral pile.

Inventors

• ZHANG GUANHONG
• LAI YU
• XU ZIDONG
• GONG JIANWEI

Assignees

• 内蒙古电力勘测设计院有限责任公司

Dates

Publication Date

20260512

Application Date

20250409

Claims (10)

1. 1. A steel pipe screw pile comprising: a steel pipe (1); A plurality of helical blades (2) surrounding the steel pipe (1), wherein the helical blades (2) are fixedly connected with the steel pipe (1); And the diameter of the annular three-fork support is larger than that of the helical blade (2).
2. 2. A steel tube screw pile according to claim 1, characterized in that the steel tube (1) comprises a cylindrical steel tube body and a conical cone tip fixedly connected to the cylindrical steel tube body.
3. 3. A steel pipe screw pile according to claim 2, characterised in that the diameter of the steel pipe body is equal to the diameter of the bottom surface of the conical tip.
4. 4. A steel pipe screw pile according to claim 1, characterized in that the plurality of screw blades (2) are equally spaced around the surface of the steel pipe (1) at a predetermined distance.
5. 5. A steel pipe screw pile according to claim 2, characterised in that the tri-fork support comprises: A cylindrical inner ring (31) having a predetermined height; A cylindrical outer ring (32); a plurality of vanes (33) fixedly connected to the cylindrical inner ring (31) and the cylindrical outer ring (32).
6. 6. A steel tube screw pile according to claim 5, characterized in that the diameter of the cylindrical inner ring (31) is equal to the diameter of the steel tube body.
7. 7. A steel tube screw pile according to claim 5, characterized in that the height of the cylindrical inner ring (31) is equal to the height of the cylindrical outer ring (32).
8. 8. A steel tube screw pile according to claim 5, characterized in that the diameter of the cylindrical outer ring (32) is twice the diameter of the screw blades (2).
9. 9. A steel tube screw pile according to claim 5, characterized in that the height of the cylindrical inner ring (31) and the cylindrical outer ring (32) is in a first preset range.
10. 10. A steel tube screw pile according to claim 5, characterized in that the cylindrical inner ring (31) of the trifurcated support is in clamping connection with the top of the steel tube (1).

Description

Steel pipe screw pile Technical Field The utility model relates to the technical field of civil engineering, in particular to a steel pipe spiral pile. Background The steel pipe screw pile is the screw pile which is most widely used, and the pile type is already a very mature pile type. Because the steel pipe screw pile has the advantages of high construction speed, small environmental damage, simple and convenient operation and the like, the steel pipe screw pile is mature to be applied in industries such as traffic, electric power, building deviation correction and the like. However, after the existing steel pipe spiral pile is formed, the horizontal bearing capacity is obviously smaller, and the requirement of structural design on the horizontal bearing capacity is not met. The reason for this problem is that the steel pipe screw pile is in pile sinking process, because the disturbance of blade to the soil around the pile for the soil around the pile is destroyed, especially the destruction to shallow soil layer in pile sinking process, the influence on horizontal bearing capacity is the biggest, because horizontal bearing capacity mainly depends on the nature of the soil in the depth of 2 (d+1) (d is steel pipe pile diameter) below the pile top, and steel pipe screw pile blade diameter is greater than the pile diameter, the pile sinking process cuts the soil, makes the soil around the pile destroyed, thereby the horizontal bearing capacity obviously descends. In the application process of the existing steel pipe spiral pile, the vertical compression resistance and the pulling resistance bearing capacity of the pile foundation are taken as important points, so that the horizontal bearing capacity is less researched, and the further development of the pile foundation in various industries is limited. Disclosure of utility model The utility model aims to solve the technical problem of providing the steel pipe screw pile, which can solve the problem of lower horizontal bearing capacity of the steel pipe screw pile after pile forming, and obviously improve the horizontal bearing capacity of the steel pipe screw pile. In order to solve the technical problems, the technical scheme of the utility model is as follows: A steel pipe screw pile comprising: A steel pipe; A plurality of helical blades surrounding the steel pipe, the helical blades being fixedly connected with the steel pipe; And the diameter of the annular three-fork support is larger than that of the helical blade. Optionally, the steel tube comprises a cylindrical steel tube body and a conical tip fixedly connected with the cylindrical steel tube body. Optionally, the diameter of the steel pipe main body is equal to the diameter of the bottom surface of the conical tip. Optionally, the plurality of spiral blades are equidistantly encircling the surface of the steel pipe according to a certain preset distance. Optionally, the three-fork bracket includes: a cylindrical inner ring having a certain preset height; A cylindrical outer ring; and a plurality of blades fixedly connected with the cylindrical inner ring and the cylindrical outer ring. Optionally, the diameter of the cylindrical inner ring is equal to the diameter of the steel pipe body. Optionally, the height of the cylindrical inner ring is equal to the height of the cylindrical outer ring. Optionally, the diameter of the cylindrical outer ring is twice the diameter of the helical blades. Optionally, the heights of the cylindrical inner ring and the cylindrical outer ring are within a first preset range. Optionally, the cylindrical inner ring of the three-fork bracket is in clamping connection with the top of the steel pipe. The scheme of the utility model at least comprises the following beneficial effects: The technical scheme of the utility model comprises a steel pipe, a plurality of spiral blades surrounding the steel pipe, a circular three-fork bracket fixedly connected with the top of the steel pipe, wherein the diameter of the three-fork bracket is larger than that of the spiral blade, so that the problem of lower horizontal bearing capacity of the steel pipe spiral pile after pile formation is solved, and the horizontal bearing capacity of the steel pipe spiral pile is obviously improved. Drawings Fig. 1 is a schematic view of a steel pipe screw pile provided by an embodiment of the present utility model; FIG. 2 is a schematic view of a steel pipe and a helical blade provided by an embodiment of the present utility model; FIG. 3 is a schematic view of a trifurcated stent provided by an embodiment of the present utility model; Reference numerals illustrate: 1. Steel pipe, 2, spiral blade, 31, cylindrical inner ring, 32, cylindrical outer ring, 33, blade. Detailed Description Exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present utility model are shown in the dra