CN215630079U - Trestle steel pipe pile - Google Patents
Trestle steel pipe pile Download PDFInfo
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- CN215630079U CN215630079U CN202122141144.7U CN202122141144U CN215630079U CN 215630079 U CN215630079 U CN 215630079U CN 202122141144 U CN202122141144 U CN 202122141144U CN 215630079 U CN215630079 U CN 215630079U
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Abstract
The utility model discloses a trestle steel pipe pile, which comprises a vertically arranged steel casing, wherein a central rock breaking assembly is arranged in the steel casing and is positioned at the lower end of the steel casing; the central rock breaking assembly comprises a plurality of retaining rib plates, the retaining rib plates are distributed in a radiating manner by taking the center of the steel casing, the outer ends of the retaining rib plates are respectively fixed with the inner wall of the steel casing, the inner ends of all the retaining rib plates are connected with the same rock breaking cone, and the outer wall of the rock breaking cone is provided with a plurality of rock breaking teeth. The utility model has the obvious effects that the utility model is particularly suitable for piling operation in rock zones with higher hardness, adopts the mode of matching the center rock breaking and the outer rock breaking, improves the rock breaking depth and the rock breaking speed of the steel pipe pile in the rock zones with high hardness, and provides guarantee for building a stable steel trestle in time.
Description
Technical Field
The utility model relates to civil engineering, in particular to temporary support in the bridge and tunnel construction process.
Background
In the bridge construction process, a steel trestle needs to be erected for assisting in communicating and conveying materials. The bridge deck of the steel trestle is supported as a stand column through a steel pipe pile, and the steel pipe pile is driven into the ground in advance according to a designed position. Pile driving in various bedrock zones may be faced during the course of a project. In order to solve the problem that the steel pipe pile is difficult to hammer in the bare bedrock zone, the applicant has proposed a related solution (Chinese patent CN111549764A, CN212714906U) in the previous period, and the application effect of the solution is better in the shale zone or the sandstone zone with low hardness. However, when a site constructor carries out piling operation on a rock zone with higher hardness, the rock breaking effect of the existing scheme is still to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model provides a steel pipe pile suitable for hard bedrock, which adopts a central rock breaking mode to break rock and can improve the piling effect and efficiency on the hard bedrock. The technical scheme is as follows:
the utility model provides a landing stage steel-pipe pile, its key lies in: the device comprises a vertically arranged steel casing, wherein a central rock breaking assembly is arranged in the steel casing and is positioned at the lower end of the steel casing;
the central rock breaking assembly comprises a plurality of retaining rib plates, the retaining rib plates are distributed in a radiating manner by taking the center of the steel casing, the outer ends of the retaining rib plates are respectively fixed with the inner wall of the steel casing, the inner ends of all the retaining rib plates are connected with the same rock breaking cone, and the outer wall of the rock breaking cone is provided with a plurality of rock breaking teeth.
Drawings
FIG. 1 is a cross-sectional view of the present invention from a first perspective;
FIG. 2 is a cross-sectional view of the present invention from a second perspective;
fig. 3 is a schematic view of the connection of the holding rib a2 to the steel casing a 1.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
Example 1: as shown in fig. 1, 2 and 3, the trestle steel pipe pile comprises a vertically arranged steel casing a1, wherein a central rock breaking assembly is arranged in the steel casing a1 and is located at the lower end of the steel casing a 1;
the central rock breaking assembly comprises a plurality of retaining rib plates a2, the retaining rib plates a2 are distributed in a divergent mode in the center of the steel casing a1, the outer ends of the retaining rib plates a2 are fixed with the inner wall of the steel casing a1 respectively, the inner ends of all the retaining rib plates a2 are connected with a rock breaking cone a3, and the outer wall of the rock breaking cone a3 is provided with a plurality of rock breaking teeth a 4.
The holding rib a2 is in the shape of a strip, the holding rib a2 is arranged obliquely, the upper end face of the holding rib a2 is welded and fixed to the inner wall of the steel casing a1, and the lower end face of the holding rib a2 is welded and fixed to the rock breaking cone a 3.
The width direction of the retaining rib a2 is parallel to the center line of the steel casing a1, the rock breaking cone a3 is located on the center line of the steel casing a1, and the angle between the retaining rib a2 and the center line of the steel casing a1 is theta, which is 35 degrees.
The rock breaking cone a3 comprises a cuboid block a31 and a regular four-pyramid block a32, wherein the cuboid block a31 is vertically arranged, the inner ends of the retaining ribs a2 are respectively connected with the upper part of the cuboid block a31, the lower part of the cuboid block a31 extends downwards out of the lower port of the steel protective cylinder a1, the number of the retaining ribs a2 is four, the inner ends of the four retaining ribs a2 are respectively welded and fixed with the four rectangular surfaces of the cuboid block a31, and the bottom surface of the regular four-pyramid block a32 is fixedly connected with the lower end surface of the cuboid block a 31;
the rock breaking teeth a4 are fixed on the lower part of the cuboid block a31, and the rock breaking teeth a4 are respectively arranged on the four rectangular faces of the cuboid block a 31.
The rock breaking teeth a4 comprise small triangular pyramid blocks a41 and large triangular pyramid blocks a42 which are in one-to-one correspondence, wherein the small triangular pyramid blocks a41 are located right below the large triangular pyramid blocks a42, and the small triangular pyramid blocks a41 and the large triangular pyramid blocks a42 are regular triangular pyramids;
the bottom surface of the small triangular pyramid block a41 is fixedly connected with the rectangular surface of the rectangular block a31, and any side edge of the small triangular pyramid block a41 faces downwards;
the bottom surface of the large triangular pyramid block a42 is fixedly connected to the rectangular surface of the rectangular parallelepiped block a31, and any one of the side edges of the large triangular pyramid block a42 faces downward.
Example 2:
this embodiment differs from embodiment 1 only in that: the holding rib a2 is composed of two high-position ribs a21 and two low-position ribs a22, an included angle between the high-position rib a21 and the center line of the steel casing a1 is theta 1, an included angle between the low-position rib a22 and the center line of the steel casing a1 is theta 2, theta 1 is 30 degrees, theta 2 is 40 degrees, the high-position ribs a21 and the low-position ribs a22 are sequentially distributed circumferentially at intervals, and the connecting positions of all the holding ribs a2 and the rock breaking cone a3 are located at the same horizontal height.
Example 3:
this embodiment differs from embodiment 2 only in that: the inner wall of the steel casing a1 is further provided with a plurality of outer rock breaking plates a5, all the outer rock breaking plates a5 are circumferentially and uniformly distributed around the center line of the steel casing a1, and the outer rock breaking plates a5 are located above the horizontal position of the rock breaking cone a 3; the outer rock breaking plates a5 correspond to the retaining ribs a2 one by one, the outer rock breaking plates a5 are located right below the corresponding retaining ribs a2, the outer edges of the outer rock breaking plates a5 are welded to the inner wall of the steel casing a1, and the upper edges of the outer rock breaking plates a5 are welded to the retaining ribs a 2. The main body structure of the outer rock breaking plate a5 is the same as that of the rock breaking plate in Chinese patent 202010958913.
And (3) rock breaking effect testing: in the field construction process, various structures are tried to break the hard sandstone, the scheme of China CN212714906U is adopted for piling at first, the rock is difficult to break, and the steel casing is difficult to continue to dive when the rock penetration depth is about 2 m. When the scheme of the embodiments 1, 2 and 3 is adopted for hammering, due to the action of the rock breaking cone a3 at the center of the steel casing, the rock-entering depth and the rock-entering speed of the steel casing are improved, and the target rock-breaking depth (6-8m) can be basically or completely achieved. By adopting the technical scheme of the embodiment 2, the high-position rib plate a21 and the low-position rib plate a22 are staggered up and down, the low-position rib plate a22 breaks rock before the high-position rib plate a21, the rock is not obviously squeezed mutually after the rock breaks at the same horizontal position, and the rock breaking rate can be increased. By adopting the technical scheme of the embodiment 3, due to the addition of the outer rock breaking plate a5 which cooperates with the rock breaking cone a3, the rock breaking speed is obviously improved; meanwhile, the connection of the outer rock breaking plate a5 at the root of the holding rib a2 can provide a connection reinforcement.
Has the advantages that: the technical scheme of the utility model is suitable for piling operation in a rock zone with higher hardness, adopts a mode of matching the center rock breaking and the outer rock breaking, improves the rock breaking depth and the rock breaking speed of the steel pipe pile in the rock zone with high hardness, and provides guarantee for building a stable steel trestle in time.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (8)
1. The utility model provides a landing stage steel-pipe pile which characterized in that: the device comprises a vertically arranged steel casing (a1), wherein a central rock breaking assembly is arranged in the steel casing (a1), and the central rock breaking assembly is positioned at the lower end of the steel casing (a 1);
the central rock breaking assembly comprises a plurality of retaining ribs (a2), the retaining ribs (a2) are distributed in a divergent mode in the center of the steel casing (a1), the outer ends of the retaining ribs (a2) are fixed to the inner wall of the steel casing (a1), the inner ends of all the retaining ribs (a2) are connected with the same rock breaking cone (a3), and a plurality of rock breaking teeth (a4) are arranged on the outer wall of the rock breaking cone (a 3).
2. The trestle steel pipe pile of claim 1, characterized in that: the retaining rib (a2) is in a strip shape, the retaining rib (a2) is obliquely arranged, the upper end face of the retaining rib (a2) is welded and fixed with the inner wall of the steel casing (a1), and the lower end face of the retaining rib (a2) is welded and fixed with the rock breaking cone (a 3).
3. The trestle steel pipe pile of claim 2, characterized in that: the width direction of the retaining rib (a2) is parallel to the central line of the steel casing (a1), the rock breaking cone (a3) is positioned on the central line of the steel casing (a1), and the included angle between the retaining rib (a2) and the central line of the steel casing (a1) is theta, wherein theta is more than or equal to 30 degrees and less than or equal to 40 degrees.
4. The trestle steel pipe pile of claim 3, characterized in that: the retaining rib plates (a2) comprise n high-position rib plates (a21) and n low-position rib plates (a22), n is a natural number, the included angle between each high-position rib plate (a21) and the center line of the steel casing (a1) is theta 1, the included angle between each low-position rib plate (a22) and the center line of the steel casing (a1) is theta 2, theta 1 is more than or equal to 30 degrees and less than or equal to theta 2 and less than or equal to 40 degrees, the high-position rib plates (a21) and the low-position rib plates (a22) are sequentially distributed annularly at intervals, and the connecting positions of all the retaining rib plates (a2) and the rock breaking cone (a3) are located at the same horizontal height.
5. The trestle steel pipe pile of claim 4, characterized in that: the rock breaking cone (a3) comprises a cuboid block (a31) and a square pyramid block (a32), wherein the cuboid block (a31) is vertically arranged, the inner ends of the retaining ribs (a2) are respectively connected with the upper part of the cuboid block (a31), the lower part of the cuboid block (a31) downwards extends out of the lower port of the steel protective cylinder (a1), the number of the retaining ribs (a2) is four, n is 2, the inner ends of the four retaining ribs (a2) are respectively welded and fixed with the four rectangular surfaces of the cuboid block (a31), and the bottom surface of the square pyramid block (a32) is fixedly connected with the lower end surface of the cuboid block (a 31);
the rock breaking teeth (a4) are fixed at the lower part of the cuboid block (a31), and the rock breaking teeth (a4) are respectively arranged on four rectangular surfaces of the cuboid block (a 31).
6. The trestle steel pipe pile of claim 5, characterized in that: the rock breaking tooth (a4) comprises a small triangular pyramid block (a41) and a large triangular pyramid block (a42) which correspond to each other one by one, wherein the small triangular pyramid block (a41) is located right below the large triangular pyramid block (a42), and the small triangular pyramid block (a41) and the large triangular pyramid block (a42) are both regular triangular pyramids;
the bottom surface of the small triangular pyramid block (a41) is fixedly connected with the rectangular surface of the rectangular block (a31), and any side edge of the small triangular pyramid block (a41) is arranged downwards;
the bottom surface of the large triangular pyramid block (a42) is fixedly connected with the rectangular surface of the rectangular block (a31), and any side edge of the large triangular pyramid block (a42) is arranged downwards.
7. The trestle steel pipe pile according to claim 1, 2, 3, 4, 5 or 6, characterized in that: the inner wall of steel casing (a1) still is equipped with broken rock plate in a plurality of outsides (a5), all broken rock plate in the outside (a5) centers on the central line hoop evenly distributed of steel casing (a1), broken rock plate in the outside (a5) is located broken rock cone's (a3) horizontal position top.
8. The trestle steel pipe pile of claim 7, characterized in that: the outer side rock breaking plates (a5) correspond to the retaining ribs (a2) in a one-to-one mode, the outer side rock breaking plates (a5) are located right below the corresponding retaining ribs (a2), the outer edges of the outer side rock breaking plates (a5) are welded to the inner wall of the steel protective cylinder (a1), and the upper edges of the outer side rock breaking plates (a5) are welded to the retaining ribs (a 2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122141144.7U CN215630079U (en) | 2021-09-07 | 2021-09-07 | Trestle steel pipe pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122141144.7U CN215630079U (en) | 2021-09-07 | 2021-09-07 | Trestle steel pipe pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215630079U true CN215630079U (en) | 2022-01-25 |
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ID=79910771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122141144.7U Active CN215630079U (en) | 2021-09-07 | 2021-09-07 | Trestle steel pipe pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215630079U (en) |
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2021
- 2021-09-07 CN CN202122141144.7U patent/CN215630079U/en active Active
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