CN215210990U - Steel pipe pile foundation - Google Patents
Steel pipe pile foundation Download PDFInfo
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- CN215210990U CN215210990U CN202120476104.5U CN202120476104U CN215210990U CN 215210990 U CN215210990 U CN 215210990U CN 202120476104 U CN202120476104 U CN 202120476104U CN 215210990 U CN215210990 U CN 215210990U
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Abstract
The utility model belongs to the technical field of the pile foundation technique and specifically relates to a steel-pipe pile foundation is related to, and it includes pile body and pile head, and the bottom at the pile body is fixed to the pile head, and the pile head is equipped with a plurality of spine portions along the axial of pile body, and the transversal taper of personally submitting of spine portion, and the main aspects and the pile head fixed connection of spine portion, the tip of spine portion forms the blade. The present application has the following effects: the spine part enables the pile head to easily break the soil layer, so that the pile head can easily enter the soil layer, the disturbance to the soil layer is reduced when the pile head enters the soil layer, the soil layer is not prone to cracking and the like, and the stability of the steel pipe pile after foundation construction is finished is guaranteed.
Description
Technical Field
The application relates to the technical field of pile foundations, in particular to a steel pipe pile foundation.
Background
The precast pile is a pile body which is made of various materials and in various forms in advance in a factory. Precast piles are typically driven, pressed or vibrated into the ground using pile sinking equipment. The precast pile is mainly divided into a concrete precast pile and a steel pipe pile.
In the related art, the construction process of the steel pipe pile foundation is as follows: the prefabricated steel pipe pile foundation is transported to a construction site, and in order to enable the steel pipe pile foundation to be smoothly driven or pressed into the soil, a tapered pile head is generally prefabricated at the bottom end of the steel pipe pile foundation. After the steel pipe pile foundation is conveyed in place, the steel pipe pile foundation is hoisted through hoisting equipment, the pile head is aligned to the pile position, and then the steel pipe pile foundation is driven into or pressed into the soil through pile driving equipment.
In view of the above-mentioned related technologies, the inventor believes that it is difficult for a pile head to break through a soil layer in a soil layer with a hard texture, and if pressurization is continued at this time, the steel pipe pile foundation is deformed slightly, and if the soil layer is cracked, the steel pipe pile foundation is not firmly fixed.
SUMMERY OF THE UTILITY MODEL
In order to make the pile head break the soil layer more easily, this application provides a steel-pipe pile basis.
The application provides a steel-pipe pile basis adopts following technical scheme:
the utility model provides a steel-pipe pile basis, includes pile body and pile head, the bottom at the pile body is fixed to the pile head, the pile head is equipped with a plurality of spine portions along the axial of pile body, the transversal taper of personally submitting of spine portion, and the main aspects and the pile head fixed connection of spine portion, the tip of spine portion forms the blade.
Through adopting above-mentioned technical scheme, spine portion makes the pile head break open the soil layer easily to make the pile head more easily enter into the soil horizon, and reduce the disturbance to the soil horizon when the pile head enters into the soil horizon, so that the difficult phenomenon such as fracture that produces of soil horizon, thereby guarantee the steadiness after the steel-pipe pile foundation construction is accomplished.
Optionally, a weld reinforcement layer is arranged at the fixed connection position of the spike part and the pile head.
Through adopting above-mentioned technical scheme, the connection effect between spine portion and the pile head is better to make spine portion be difficult for producing the separation with the pile head.
Optionally, a stiffening plate is arranged at a fixed connection position of the spine part and the pile head, and the stiffening plate is arranged along the horizontal direction.
By adopting the technical scheme, the stiffening plate is used for further enhancing the connecting effect and the structural strength between the spine part and the pile head.
Optionally, the pile body includes an outer pipe section and an inner pipe section, the outer pipe section is sleeved outside the inner pipe section, the outer pipe section and the inner pipe section are fixedly connected through a connecting plate, and a cast-in-situ layer is arranged between the outer pipe section and the inner pipe section.
Through adopting above-mentioned technical scheme, cast-in-place layer is used for strengthening the structural strength and the bearing strength of pile body to make the pile body be difficult for producing the deformation at the in-process of driving into, thereby with the steadiness after guaranteeing the steel-pipe pile foundation construction.
Optionally, a reinforcement cage is arranged in the cast-in-place layer.
Through adopting above-mentioned technical scheme, the steel reinforcement cage structure is used for strengthening cast-in-place layer's compressive strength and structural strength to make the difficult crackle or damage of producing of cast-in-place layer of pile body in the in-process of driving into.
Optionally, the outer pipe section is provided with grouting holes directly above the spine portion, the grouting holes correspond to the spine portions one to one, and the cast-in-place layer is provided with a filling layer directly above the spine portion.
Through adopting above-mentioned technical scheme, the filling layer is used for filling the spout of spine portion roll-off to make the difficult production of soil horizon around the steel-pipe pile basis subside, and then with the steadiness of reinforcing steel-pipe pile basis in the soil horizon.
Optionally, a flange is arranged at one end of the pile body, which is far away from the pile head, and a preformed hole for penetrating through the flange is formed in the flange along the axial lead direction of the pile body.
Through adopting above-mentioned technical scheme, the ring flange is used for steel pipe pile foundation to be connected with the structure stake on upper portion mutually to make the structure stake on upper portion can realize firm installation.
Optionally, a reinforcing rib plate is arranged between the pile foundation and the flange plate.
Through adopting above-mentioned technical scheme, deep floor is used for strengthening the connection effect between ring flange and the pile foundation to make the ring flange be difficult for producing the separation with the pile foundation, and make the support intensity of ring flange promote.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the spine part enables the pile head to easily break the soil layer, so that the pile head can easily enter the soil layer, and the disturbance to the soil layer is reduced when the pile head enters the soil layer, so that the soil layer is not easy to crack and the like, and the stability of the steel pipe pile after the foundation construction is finished is ensured;
2. through setting up the filling layer, the filling layer is used for filling the spout of spine portion roll-off to make the difficult production of soil horizon around the steel-pipe pile basis subside, and then with the steadiness of reinforcing steel-pipe pile basis in the soil horizon.
Drawings
FIG. 1 is a schematic structural diagram of an entire steel pipe pile foundation according to an embodiment of the present application;
FIG. 2 is a longitudinal sectional view of a steel pipe pile foundation according to an embodiment of the present invention;
fig. 3 is a transverse sectional view of a steel-pipe pile foundation according to an embodiment of the present invention.
Description of reference numerals: 1. a pile body; 11. an outer tube section; 111. grouting holes; 12. an inner tube section; 13. a connecting plate; 14. a flange plate; 141. reserving a hole; 15. reinforcing rib plates; 2. pile head; 3. a spike portion; 4. a weld reinforcement layer; 5. a stiffening plate; 6. a cast-in-place layer; 7. a reinforcement cage; 8. and (5) filling the layer.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a steel pipe pile foundation. Referring to fig. 1, the steel pipe pile foundation includes a pile body 1 and a pile head 2.
The pile body 1 is in a circular tube shape, the pile head 2 is in a conical shape, and the pile head 2 is welded and fixed at the bottom end of the pile body 1. The big end of the pile head 2 is the end close to the pile body 1, and the small end of the pile head 2 is the end far away from the pile body 1. The diameter of the large end of the pile head 2 is equal to the outer diameter of the pile body 1. During construction, the sharp corner of the small end of the pile head 2 is aligned with the pile position, and then the pile head 2 and the pile body 1 are driven into a soil layer through the piling equipment to complete the fixation of the steel pipe pile foundation.
A plurality of spike parts 3 are fixed on the pile head 2 along the axial direction of the pile body 1 by welding. The number of spikes 3 depends on the size of the pile head 2, and four spikes 3 are exemplified in the present embodiment. The cross section of the spike part 3 is conical, the large end of the spike part 3 is welded and fixed with the pile head 2, and the small end of the spike part 3 forms a cutting edge. Spine portion 3 makes pile head 2 can break the soil layer easily to make pile head 2 more easily enter into the soil horizon, and reduce the disturbance to the soil horizon when pile head 2 enters into the soil horizon, so that the soil horizon is difficult for producing phenomenons such as fracture, thereby guarantees the steadiness after the construction of steel-pipe pile foundation is accomplished.
And a welding seam reinforcing layer 4 is arranged at the fixed connection position of the spike part 3 and the pile head 2. The weld reinforcement layer 4 makes the fixed connection of the spike 3 and the pile head 2 form an R angle, so that the connection effect between the spike 3 and the pile head 2 is better, and the spike 3 is not easy to separate from the pile head 2. The R-horn-shaped welding line is more convenient to construct and simpler to operate.
And a stiffening plate 5 is arranged at the fixed connection part of the spine part 3 and the pile head 2. The stiffening plates 5 are arranged along the horizontal direction, the stiffening plates 5 are triangular, one ends of the stiffening plates 5 are fixedly welded with the spine parts 3, and the other ends of the stiffening plates 5 are fixedly welded with the pile heads 2. The plurality of stiffening plates 5 are arranged along the axial lead direction of the pile body 1. The stiffening plate 5 is used for further enhancing the connection effect and the structural strength between the spine part 3 and the pile head 2.
Referring to fig. 1 and 2, the pile body 1 comprises an outer pipe section 11 and an inner pipe section 12. The outer pipe section 11 is sleeved outside the inner pipe section 12, and the outer pipe section 11 and the inner pipe section 12 are coaxially arranged. The ends of the outer pipe section 11 and the inner pipe section 12 close to the pile head 2 are welded and fixed with the pile head 2, so that a grouting space is formed between the outer pipe section 11 and the inner pipe section 12. The outer pipe section 11 and the inner pipe section 12 are fixedly connected through a connecting plate 13, and the connecting plate 13 is arranged at equal intervals along the axial section direction of the outer pipe section 11 and the inner pipe section 12. The height of the connecting plate 13 is less than the length of the outer pipe section 11 and the inner pipe section 12, so that the grouting space can be filled with grouting once. After grouting, a cast-in-place layer 6 is formed between the outer pipe section 11 and the inner pipe section 12. The cast-in-place layer 6 is used for enhancing the structural strength and the bearing strength of the pile body 1, so that the pile body 1 is not easy to deform in the driving process, and the stability of the steel pipe pile after foundation construction is guaranteed.
Referring to fig. 2 and 3, a reinforcement cage 7 is built in the cast-in-place layer 6. The reinforcement cage 7 is pre-fixed in the grouting space before grouting. The length of the reinforcement cage 7 is larger than the height of the connecting plates 13, and the number of the reinforcement cages 7 is equal to that of the connecting plates 13. A reinforcement cage 7 is arranged between two adjacent connecting plates 13. The embodiment is described by taking two connecting plates 13 and two reinforcement cages 7 as examples. The reinforcement cage 7 structure is used for enhancing the compressive strength and the structural strength of the cast-in-place layer 6, so that the cast-in-place layer 6 is not easy to crack or damage in the driving process of the pile body 1.
The outer pipe section 11 is provided with a grouting hole 111 right above the spine part 3. The grouting holes 111 are circular holes, and the grouting holes 111 correspond to the outer pipe sections 11 one by one. In this embodiment, the grouting hole 111 is located in the middle of the outer pipe section 11. After the pile head 2 is driven into the soil layer, the spine part 3 slides out of the soil layer out of the pile body 1 through a chute along with the continuous penetration of the pile head 2. Pile head 2 and pile body 1 are driven into the soil layer completely to when grout in the grout space, the mortar can be poured into the spout through grout hole 111, and cast-in-place layer 6 can be formed with filling layer 8 directly over spine portion 3 promptly, and filling layer 8 and cast-in-place layer 6 structure as an organic whole. The filling layer 8 is used for filling the sliding groove for sliding out of the spine part 3, so that the soil layer around the steel pipe pile foundation is not prone to sedimentation, and the stability of the steel pipe pile foundation in the soil layer is further enhanced.
Referring to fig. 1 and 2, the end of the pile body 1 away from the pile head 2 is provided with a flange 14. The flange plate 14 is welded and fixed with the pile body 1. The flange 14 is used for connecting the steel pipe pile foundation with the upper structural pile, so that the upper structural pile can be stably installed. The flange 14 is provided with a prepared hole 141 through which the flange 14 passes along the axial line direction of the pile body 1. The preformed holes 141 are provided in plural, eight in the present embodiment as an example, at equal intervals in the circumferential direction of the flange 14. The prepared holes 141 are used for passing through bolts, and the bolts are used for connecting the upper structural piles and the flange 14.
A reinforcing rib plate 15 is arranged between the pile body 1 and the flange plate 14. The reinforcing rib plate 15 is in a right-angled triangle shape, and two right-angled sides of the reinforcing rib plate 15 are respectively welded and fixed with the pile foundation and the flange 14. The reinforcing rib plates 15 are arranged at equal intervals along the circumferential direction of the flange plate 14, and the reinforcing rib plates 15 are positioned between two adjacent preformed holes 141, namely eight reinforcing rib plates 15 are arranged. The reinforcing rib plates 15 are used for enhancing the connection effect between the flange plate 14 and the pile foundation, so that the flange plate 14 is not easy to separate from the pile foundation, and the supporting strength of the flange plate 14 is improved.
The implementation principle of the steel pipe pile foundation in the embodiment of the application is as follows: during construction, one end of the inner pipe section 12 is welded and fixed on the pile head 2, then the outer pipe section 11 is sleeved on the inner pipe section 12, one end of the outer pipe section 11 close to the pile head 2 is welded and fixed with the pile head 2, and meanwhile, the connecting plate 13 is welded and fixed between the outer pipe section 11 and the inner pipe section 12. And then the spine part 3 is welded and fixed on the pile head 2, and the welding seam reinforcement layer 4 is processed and molded during welding. And then the stiffening plate 5 is welded and fixed at the fixed connection part of the spine part 3 and the pile head 2. And then the flange plate 14 is welded and fixed at one end of the pile body 1 far away from the pile head 2, and the reinforcing rib plate 15 is welded and fixed at the welding position of the flange plate 14 and the pile body 1. Then, the pile head 2 is aligned to the pile position, the pile head 2 and the pile body 1 are driven into a soil layer through pile driving equipment, then the reinforcement cage 7 is pre-fixed between the inner pipe section 12 and the outer pipe section 11, mortar is filled into a grouting space between the inner pipe section 12 and the outer pipe section 11, the mortar enters a sliding groove for sliding out of the spine part 3 through a grouting hole 111, a filling layer 8 is formed above the spine part 3, and the mortar forms a cast-in-situ layer 6 in the grouting space.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a steel pipe pile foundation, includes pile body (1) and pile head (2), the bottom at pile body (1) is fixed in pile head (2), its characterized in that: pile head (2) are equipped with a plurality of spine portions (3) along the axial of pile body (1), the transversal taper of personally submitting of spine portion (3), and the main aspects and pile head (2) fixed connection of spine portion (3), the tip of spine portion (3) forms the blade.
2. The steel pipe pile foundation according to claim 1, characterized in that: and a welding seam reinforcing layer (4) is arranged at the fixed connection part of the spike part (3) and the pile head (2).
3. The steel pipe pile foundation according to claim 1, characterized in that: and a stiffening plate (5) is arranged at the fixed connection position of the spine part (3) and the pile head (2), and the stiffening plate (5) is arranged along the horizontal direction.
4. The steel pipe pile foundation according to claim 1, characterized in that: the pile body (1) comprises an outer pipe section (11) and an inner pipe section (12), the outer pipe section (11) is sleeved outside the inner pipe section (12), the outer pipe section (11) and the inner pipe section (12) are fixedly connected through a connecting plate (13), and a cast-in-place layer (6) is arranged between the outer pipe section (11) and the inner pipe section (12).
5. The steel pipe pile foundation according to claim 4, wherein: and a reinforcement cage (7) is arranged in the cast-in-place layer (6).
6. The steel pipe pile foundation according to claim 4, wherein: outer pipe section (11) are equipped with grout hole (111) directly over spine portion (3), and grout hole (111) and spine portion (3) one-to-one, cast-in-place layer (6) are equipped with filling layer (8) directly over spine portion (3).
7. The steel pipe pile foundation according to claim 1, characterized in that: one end of the pile body (1) far away from the pile head (2) is provided with a flange (14), and the flange (14) is provided with a preformed hole (141) penetrating through the flange (14) along the axial lead direction of the pile body (1).
8. The steel pipe pile foundation according to claim 7, wherein: and a reinforcing rib plate (15) is arranged between the pile foundation and the flange plate (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120476104.5U CN215210990U (en) | 2021-03-04 | 2021-03-04 | Steel pipe pile foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120476104.5U CN215210990U (en) | 2021-03-04 | 2021-03-04 | Steel pipe pile foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215210990U true CN215210990U (en) | 2021-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120476104.5U Active CN215210990U (en) | 2021-03-04 | 2021-03-04 | Steel pipe pile foundation |
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| Country | Link |
|---|---|
| CN (1) | CN215210990U (en) |
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2021
- 2021-03-04 CN CN202120476104.5U patent/CN215210990U/en active Active
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