CN211948393U - Steel screw pile - Google Patents
Steel screw pile Download PDFInfo
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- CN211948393U CN211948393U CN202020172974.9U CN202020172974U CN211948393U CN 211948393 U CN211948393 U CN 211948393U CN 202020172974 U CN202020172974 U CN 202020172974U CN 211948393 U CN211948393 U CN 211948393U
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Abstract
The utility model relates to a steel screw pile, include: a drill section and at least one connection section; the outer side of the drill bit section is provided with a conical thread, and the tip part of the conical thread is positioned at the bottom end of the drill bit section; the outer side of the connecting section is provided with cylindrical threads, the bottom end of the connecting section is integrally formed with a connector, the interior of the connecting section is arranged in a hollow manner, and one end of the connecting section, which is far away from the connector, is provided with an opening; the two connecting sections form a splicing fit through the top openings of the connectors and the connecting sections, the top end of the drill bit section is provided with a connecting hole, and the drill bit section and the connecting sections form a splicing fit through the connectors and the connecting hole. The utility model has the effects of fast pile forming speed, no foreign muck and accelerated construction efficiency.
Description
Technical Field
The utility model belongs to the technical field of the technique of building engineering equipment and specifically relates to a steel screw thread stake is related to.
Background
The traditional precast pile construction methods mainly comprise a static pressure method and a hammering method, but the two methods damage a pile body on one hand, and in order to solve the problems, an embedded construction method of implanting the precast pile through pre-drilling holes is developed in the engineering industry.
The retrieved Chinese patent with the publication number of CN203373734U discloses a precast pile, which comprises a pile body, wherein an end plate is fixed at the bottom of the pile body, and a plurality of steel plates which are arranged in a spiral circumference are fixed on the bottom surface of the end plate.
The above prior art solutions have the following drawbacks: when the precast pile is perforated on the ground, slurry discharge and muck outward transportation are required, so that the construction cost is increased and the construction period is prolonged.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a steel screw pile, which has the advantages of high pile forming speed, no foreign muck and accelerated construction efficiency.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
a steel threaded pile comprises a drill bit section and at least one connecting section;
the outer side of the drill bit section is provided with a conical thread, and the tip part of the conical thread is positioned at the bottom end of the drill bit section;
the outer side of the connecting section is provided with cylindrical threads, the bottom end of the connecting section is integrally formed with a connector, the interior of the connecting section is hollow, and one end of the connecting section, which is far away from the connector, is provided with an opening;
two the linkage segment passes through the connector with the top opening of linkage segment forms the cooperation of pegging graft, the top of drill bit section is equipped with the connecting hole, the drill bit section with the linkage segment passes through the connector with the connecting hole forms the cooperation of pegging graft.
By adopting the technical scheme, when piling, the high-torque drilling machine presses the drill bit section to be screwed into the ground, so that the drill bit section drills downwards along with the rotation, because the conical threads are arranged on the peripheral side of the drill bit section, the drill bit section can conveniently drill into the soil layer, the connecting section is in inserted fit with the connecting hole of the drill bit section through the connector along with the drill bit section entering the soil layer, the connecting section is driven by the high-torque drilling machine to gradually compress and rotate, so that the connecting section drives the drill bit section to continue drilling, the connecting section drills into the soil layer, concrete is poured or secondary utilization plastic is filled into the connecting section from the top end opening of the connecting section, and the piling operation of one connecting section is finished, the length of the connecting section is selected according to the piling depth required, so that the piling operation is facilitated, pre-punching is not needed in the piling process, no dregs are transported outwards, and the piling efficiency is improved.
The utility model discloses can further configure to in a preferred example, the cross-section of connector with the cross-section of connecting hole and the inside cross-section of linkage segment all is regular hexagon and sets up.
By adopting the technical scheme, after the drill bit section and the connecting section or the two connecting sections are connected, the cross section of the connecting section is in a regular hexagon shape, so that when the connecting section is driven to rotate, the drill bit section and the connecting sections are not easy to rotate relatively, and the piling operation is facilitated.
The utility model discloses can further configure to in a preferred example, the inside cavity of drill bit section sets up just the inside cross-section of drill bit section is regular hexagon setting, the connecting hole with the inside intercommunication of drill bit section just the pore wall of connecting hole with the inner wall parallel and level of drill bit section.
Through adopting above-mentioned technical scheme, when the degree of depth that needs the pile is darker, the inside of drill bit section was selected for hollow setting this moment to alleviate its weight when piling, conveniently use longer drill bit section, thereby made things convenient for the pile, drill bit section pile is accomplished the back, through pouring the concrete or filling the reutilization plastics from the connecting hole department, thereby conveniently fills the drill bit section, has made things convenient for the transportation of drill bit section, has saved the cost.
The present invention may be further configured in a preferred embodiment such that the drill bit section is internally solid.
Through adopting above-mentioned technical scheme, when the degree of depth that needs the pile is less, only need a drill bit section can accomplish the pile operation this moment to the solid drill bit section that sets up need not to carry out the concreting or fill the reutilization plastics after having beaten the stake, has promoted pile efficiency.
The present invention may be further configured in a preferred embodiment, the thread shapes of the conical thread and the cylindrical thread are all triangular, rectangular, saw-tooth or arc-shaped.
Through adopting above-mentioned technical scheme, the profile of tooth of the outside screw thread of selection drill bit section and linkage segment according to the geology condition to conveniently pile, and the stake intensity after the shaping is higher.
The present invention may be further configured in a preferred embodiment such that the diameter of the drill bit section and the diameter of the connecting section are both 50-1200 mm.
Through adopting above-mentioned technical scheme, when the diameter of the length of drill bit section and linkage segment is less than 50mm, intensity was not enough before the stake after the shaping, and when the diameter of the length of drill bit section and linkage segment was greater than 1200mm, the pile driving degree of difficulty was higher, and processing cost is great.
The present invention may be further configured in a preferred embodiment such that the drill bit section and the connecting section are each 1-15 meters in length.
Through adopting above-mentioned technical scheme, when the length of drill bit section and linkage segment is less than 1 meter, need frequently increase the linkage segment, influence pile efficiency, when the length of drill bit section and linkage segment is greater than 15 meters, the length overlength of drill bit section and linkage segment and to the requirement of equipment of piling when piling higher, increased the cost.
The utility model discloses can further configure to in a preferred example, the drill bit section with all be equipped with many slip casting steel pipes in the linkage segment, the length direction of slip casting steel pipe with the drill bit section or the length direction of linkage segment is unanimous, just the slip casting steel pipe run through in the drill bit section or the both ends of linkage segment.
By adopting the technical scheme, after the drill bit section and the connecting sections are driven into the ground, the grouting steel pipes inside the drill bit section and the connecting sections are communicated with each other, so that slurry enters the bottom end of the drill bit section through high-pressure cement grout, the strength of a soil layer around the bottom end of the drill bit section or a pile body is enhanced, the meshing effect of a soil body and screw threads is improved, and the bearing capacity of the pile is improved.
The utility model discloses can further configure to in a preferred example, the diameter of slip casting steel pipe is 20-50 mm.
Through adopting above-mentioned technical scheme, when the diameter of slip casting steel pipe is less than 20mm, grout is difficult for flowing in the slip casting steel pipe, influences grouting efficiency, and when the diameter of slip casting steel pipe is greater than 50mm, not only the cost of slip casting steel pipe has improved, influences the pressure that mud received in the slip casting steel pipe moreover, influences the grouting effect.
To sum up, the utility model discloses a following beneficial technological effect:
1. when piling, the drill bit section is firstly driven into the soil layer, and the conical threads are arranged on the periphery of the drill bit section, so that when the drill bit section is screwed into the soil layer, dregs are not easy to generate, and pre-punching is not needed, so that piling operation is facilitated, and piling efficiency is improved;
2. the number of the connecting sections is increased according to the piling depth, and the connecting sections are in splicing fit with the drill bit sections or the connecting sections, so that the drill bit sections can still drill downwards when the connecting section at the uppermost layer is driven to rotate, and piling is facilitated;
3. after the pile is driven, grouting is carried out towards the bottom end of the drill bit part through the grouting steel pipe, so that the soil layer strength of the bottom end of the pile is improved, the meshing effect of soil and the screw teeth is improved, and the bearing capacity of the pile is improved.
Drawings
FIG. 1 is a schematic structural diagram of a connection segment in the first embodiment;
FIG. 2 is a schematic structural diagram of a drill bit section in the first embodiment;
FIG. 3 is a schematic view of the connection section at the top end in the first embodiment;
FIG. 4 is a schematic view of a partial vertical cross-section of the drill bit section and the connecting section after being inserted;
FIG. 5 is a schematic structural view of a drill bit section in the second embodiment.
Reference numerals: 1. a drill bit section; 2. a connecting section; 3. a connector; 4. connecting holes; 5. and (5) grouting the steel pipe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows:
referring to fig. 1 and 2, for the utility model discloses a steel screw pile, including drill section 1 and at least one linkage segment 2.
Referring to fig. 2, the drill bit section 1 is cylindrical, and the interior of the drill bit section 1 is hollow and the top end thereof is open. The bottom of drill bit section 1 is conical setting, and the outside of drill bit section 1 is equipped with conical screw thread, and conical screw thread's pointed end portion is located the bottom of drill bit section 1.
Referring to fig. 1, the connecting section 2 is cylindrical, and the outer side of the connecting section 2 is provided with cylindrical threads. The bottom integrated into one piece of linkage segment 2 has connector 3, and the inside cavity of linkage segment 2 sets up, and linkage segment 2 deviates from the one end opening setting of connector 3.
Referring to fig. 1 and 2, the two connecting sections 2 are in insertion fit through the top openings of the connecting head 3 and the connecting sections 2, the top end of the drill bit section 1 is provided with a connecting hole 4, and the drill bit section 1 and the connecting sections 2 are in insertion fit through the connecting head 3 and the connecting hole 4. Wherein the cross section of the connector 3, the cross section of the connecting hole 4 and the inner cross section of the connecting section 2 are arranged in a regular hexagon shape. And the internal section of the drill bit section 1 is arranged in a regular hexagon, the connecting hole 4 is communicated with the inside of the drill bit section 1, and the hole wall of the connecting hole 4 is flush with the inner wall of the drill bit section 1. When piling, the high-torque drilling machine pushes the drill bit section 1 to be screwed into the ground, so that the drill bit section 1 drills downwards along with rotation, and the conical threads are arranged on the peripheral side of the drill bit section 1, so that the drill bit section 1 can conveniently drill into the soil layer. And (3) pouring concrete or filling secondary utilization plastic into the drill bit section 1 through the connecting hole 4 along with the drill bit section 1 entering the soil layer. And then the connecting section 2 is in inserting fit with the connecting hole 4 of the drill bit section 1 through the connector 3, the connecting section 2 is driven by a high-torque drilling machine to be gradually compressed and rotated, so that the connecting section 2 drives the drill bit section 1 to continue drilling, meanwhile, the connecting section 2 is drilled into the soil layer, and then concrete is poured or secondary utilization plastics are filled into the connecting section 2 from the top end opening of the connecting section 2, so that the piling operation of one connecting section 2 is completed. The length of the connecting section 2 is selected according to the piling depth required, so that the piling operation is facilitated, pre-punching is not needed in the piling process, no dregs are transported outwards, and the piling efficiency is improved.
Referring to fig. 1 and 2, the length of the drill bit section 1 or the single joint section 2 is generally selected to be in the range of 1-15 meters, depending on the piling depth, which is typically 0.5-60 m. The diameter of either the drill bit section 1 or the connecting section 2 is selected in the range of 50-1200mm in order to facilitate pile driving and to maintain the strength of the pile. The thread of the thread on the peripheral side of the drill bit section 1 or the connecting section 2 can be selected to be a coarse thread or a fine thread according to geological conditions. Meanwhile, according to the requirements of geological conditions and bearing capacity, the cross section of the thread on the peripheral side of the drill bit section 1 or the connecting section 2 can be selected to be triangular, rectangular, zigzag, circular arc and other special shapes, and the cross section is generally selected to be triangular. According to the conditions of soil layers, the thread pitch range of the thread on the peripheral side of the drill bit section 1 or the connecting section 2 is 50-1000mm, the thread thickness is 10-300mm, and the height of the thread is 10-400 mm.
Referring to fig. 3, a hexagonal bolt head is integrally formed at the top end of the uppermost connecting segment 2.
Referring to fig. 1 and 4, a plurality of grouting steel pipes 5 are arranged in the drill bit section 1 and the connecting section 2, and the grouting steel pipes 5 are welded on the inner sides of the drill bit section 1 and the connecting section 2. The length direction of the grouting steel pipe 5 is consistent with the length direction of the drill bit section 1 or the connecting section 2, and the grouting steel pipe 5 penetrates through two ends of the drill bit section 1 or the connecting section 2. The number of the steel pipes 5 to be grouted can thus be selected from 1 to 6, depending on the diameter of the drill bit section 1 and the connecting section 2. The diameter of the grouting steel pipe 5 can be selected within 20-50mm according to the diameters of the drill bit section 1 and the connecting section 2. After the drill bit section 1 is arranged in the soil layer, the drill bit section 1 is filled by pouring concrete or filling secondary plastic, the connecting section 2 is inserted into the top end of the drill bit section 1, the drill bit section 1 and the grouting steel pipes 5 in the connecting section 2 are correspondingly communicated with each other at the moment, and after the different connecting sections 2 are inserted into each other, the grouting steel pipes 5 between the adjacent connecting sections 2 are correspondingly communicated with each other. After the drill bit section 1 and the connecting sections 2 are driven into the ground, the drill bit section 1 and the grouting steel pipes 5 inside the connecting sections 2 are communicated with each other, so that slurry enters the bottom end of the drill bit section 1 through high-pressure grouting slurry, the strength of a soil layer around the bottom end of the drill bit section 1 or a pile body is enhanced, the meshing effect of a soil body and screw threads is improved, and the bearing capacity of the pile is improved.
The implementation principle of the embodiment is as follows:
when piling, the high-torque drilling machine pushes the drill bit section 1 to be screwed into the ground, so that the drill bit section 1 drills downwards along with rotation, and the conical threads are arranged on the peripheral side of the drill bit section 1, so that the drill bit section 1 can conveniently drill into the soil layer. And (3) pouring concrete or filling secondary utilization plastic into the drill bit section 1 through the connecting hole 4 along with the drill bit section 1 entering the soil layer. And then the connecting section 2 is in inserting fit with the connecting hole 4 of the drill bit section 1 through the connector 3, the connecting section 2 is driven by a high-torque drilling machine to be gradually compressed and rotated, so that the connecting section 2 drives the drill bit section 1 to continue drilling, meanwhile, the connecting section 2 is drilled into the soil layer, and then concrete is poured or secondary utilization plastics are filled into the connecting section 2 from the top end opening of the connecting section 2, so that the piling operation of one connecting section 2 is completed. The length of the connecting section 2 is selected according to the depth of pile driving required, thereby facilitating the pile driving operation. After the pile is driven, slurry is pressed into the grouting steel pipe 5, so that the slurry enters the bottom end of the drill bit section 1, the strength of the bottom end of the drill bit section 1 or a soil layer around a pile body is enhanced, the meshing effect of a soil body and the screw threads is improved, and the bearing capacity of the pile is improved. The piling process does not need to be perforated in advance, so that no dregs are transported outside, and the piling efficiency is improved.
Example two:
the difference between the second embodiment and the first embodiment is that the interior of the drill bit section 1 is different.
Referring to fig. 5, the drill bit section 1 is provided solid inside. And the top end of the drill bit section 1 is integrally formed with a hexagonal bolt head, when the depth of piling is shallow, the piling operation can be completed only by one drill bit section 1, so that concrete pouring or secondary plastic filling is not needed after the solid drill bit section 1 finishes piling, and the piling efficiency is improved.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (9)
1. A steel screw pile, comprising: a drill section (1) and at least one connection section (2);
the outer side of the drill bit section (1) is provided with a conical thread, and the tip part of the conical thread is positioned at the bottom end of the drill bit section (1);
the outer side of the connecting section (2) is provided with cylindrical threads, the bottom end of the connecting section (2) is integrally formed with a connector (3), the interior of the connecting section (2) is hollow, and one end of the connecting section (2) departing from the connector (3) is provided with an opening;
two linkage segment (2) pass through connector (3) with the top opening of linkage segment (2) forms the cooperation of pegging graft, the top of drill bit section (1) is equipped with connecting hole (4), drill bit section (1) with linkage segment (2) pass through connector (3) with connecting hole (4) form the cooperation of pegging graft.
2. A threaded steel pile according to claim 1, characterized in that the cross-section of the connection head (3) and the cross-section of the connection hole (4) and the internal cross-section of the connection segment (2) are arranged in regular hexagon.
3. A threaded steel pile according to claim 2, characterized in that the interior of the drill section (1) is hollow and the interior cross-section of the drill section (1) is regular hexagonal, the connection holes (4) communicate with the interior of the drill section (1) and the walls of the connection holes (4) are flush with the inner wall of the drill section (1).
4. A threaded steel pile according to claim 2, characterized in that the drill bit section (1) is arranged solid inside.
5. A threaded steel pile according to claim 3 or 4, characterized in that the profile of the conical and cylindrical threads is triangular, rectangular, saw-toothed or circular.
6. A threaded steel pile according to claim 3 or 4, characterized in that the drill section (1) and the connecting section (2) are each 50-1200mm in diameter.
7. A threaded steel pile according to claim 3 or 4, characterized in that the drill section (1) and the connecting section (2) are each 1-15 meters in length.
8. A threaded steel pile according to claim 3 or 4, characterized in that a plurality of grouting steel pipes (5) are arranged in both the drill head section (1) and the connection section (2), the length direction of the grouting steel pipes (5) is the same as the length direction of the drill head section (1) or the connection section (2), and the grouting steel pipes (5) penetrate through both ends of the drill head section (1) or the connection section (2).
9. A threaded steel pile according to claim 8, characterized in that the diameter of the steel grouting pipe (5) is 20-50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020172974.9U CN211948393U (en) | 2020-02-16 | 2020-02-16 | Steel screw pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020172974.9U CN211948393U (en) | 2020-02-16 | 2020-02-16 | Steel screw pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211948393U true CN211948393U (en) | 2020-11-17 |
Family
ID=73194657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020172974.9U Active CN211948393U (en) | 2020-02-16 | 2020-02-16 | Steel screw pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211948393U (en) |
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2020
- 2020-02-16 CN CN202020172974.9U patent/CN211948393U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20211027 Address after: 437000 room 1203, 12 / F, unit 1, building 2, No. 45, Chahua Road, Xianning City, Hubei Province Patentee after: Hubei Yuanchen Construction Engineering Co.,Ltd. Address before: 430014 Building 2, No. 2, Jingnan Road, Shida village, Houhu Township, Jiang'an District, Wuhan City, Hubei Province Patentee before: Wuhan jinruiwei Basic Engineering Co.,Ltd. |