CN113445500A - Forming construction method of stiff composite pile - Google Patents
Forming construction method of stiff composite pile Download PDFInfo
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- CN113445500A CN113445500A CN202110898791.4A CN202110898791A CN113445500A CN 113445500 A CN113445500 A CN 113445500A CN 202110898791 A CN202110898791 A CN 202110898791A CN 113445500 A CN113445500 A CN 113445500A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/58—Prestressed concrete piles
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- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The application relates to a construction method of a stiff composite pile, which comprises the following steps: the method comprises the following steps: stirring and solidifying the solidifying material and the in-situ soil on the upper surface of the in-situ soil layer in situ to form a solidified layer; step two: sequentially driving four composite piles into the in-situ soil layer to enable the four composite piles to be in quadrilateral distribution; step three: each composite pile is provided with a positioning column for positioning the composite pile, and the positioning column is fixed on the fixed layer; step four: the four positioning columns are connected together through a support; step five: each composite pile is provided with a clamping mechanism for clamping the positioning column; step six: and fixing the composite pile and the positioning column together through a clamping mechanism. The application improves the stability of installing the stiff composite pile.
Description
Technical Field
The application relates to a foundation treatment method, in particular to a forming construction method of a stiff composite pile.
Background
The stiff composite pile is formed by driving a PHC pipe pile in the center of a concrete pile which is already driven to form a stiff core cement-soil composite pile. The cement mixing pile with the pile diameter of 600-plus-1000 mm is usually constructed in the soft soil foundation, the pile diameter of the stiffening core is constructed in 220-plus-270 mm when the cement is not hardened to form the plain concrete stiffening core cement soil composite pile, a reinforcement cage or inserted with reinforcements and steel pipes can be added to form the reinforced concrete stiffening core, and the pipe pile or the square pile is inserted into the reinforced concrete stiffening core to form the high-bearing-capacity composite pile.
In soft soil foundations, a common reinforcing method for the rigid composite piles is a composite foundation method. The composite foundation method is characterized in that composite piles are driven into an in-situ soil layer to achieve a compact effect on the in-situ soil layer, the bottom ends of the composite piles are inserted into a supporting layer in the pile driving process, the supporting layer has an upward supporting effect on the composite piles, and the composite piles have an upward supporting effect on the foundation, so that the foundation is prevented from sinking.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: due to the fact that the in-situ soil layer is soft in geology, the stiff composite pile is prone to being inclined under the pressure effect of the foundation in the process of building the foundation.
Disclosure of Invention
In order to improve the installation stability of the stiff composite pile, the application provides a forming construction method of the stiff composite pile.
The forming construction method for the stiff composite pile adopts the following technical scheme:
a forming construction method of a stiff composite pile comprises the following steps:
the method comprises the following steps: stirring and solidifying the solidifying material and the in-situ soil on the upper surface of the in-situ soil layer in situ to form a solidified layer;
step two: sequentially driving four composite piles into the in-situ soil layer to enable the four composite piles to be in quadrilateral distribution;
step three: each composite pile is provided with a positioning column for positioning the composite pile, and the positioning column is fixed on the fixed layer;
step four: the four positioning columns are connected together through a support;
step five: each composite pile is provided with a clamping mechanism for clamping the positioning column;
step six: and fixing the composite pile and the positioning column together through a clamping mechanism.
Through adopting above-mentioned technical scheme, solidified layer compares with the normal position soil layer, and solidified layer is higher than the hardness of normal position soil layer, and solidified layer is bigger to the holding power of reference column, has increased the fastness of reference column installation, links together four solid fixed rings through the support to link together four composite pile, and then link together four composite pile, have the effect of pin down each other between four composite pile, thereby increased four composite pile simultaneously and buried the stability in normal position soil layer underground.
Preferably, the clamping mechanism comprises four clamping assemblies and a driving assembly, and the four clamping assemblies are uniformly distributed on the top end of the positioning column in the circumferential direction;
the clamping assembly comprises a supporting block and a clamping block, the supporting block is fixed on the positioning column, a sliding rod is fixedly arranged on the clamping block, a sliding hole is formed in the supporting block, the sliding rod penetrates through the sliding hole, and the sliding rod is in sliding fit with the sliding hole;
the driving assembly is used for driving the four clamping blocks to slide towards the direction close to or far away from the composite pile.
Through adopting above-mentioned technical scheme, the staff slides through four grip blocks of drive assembly drive orientation near the direction of composite pile to make four equal butt of grip block in the lateral wall of composite pile, four grip blocks have the clamping action to composite pile, thereby be in the same place composite pile and reference column are fixed, increased the stability of composite pile installation.
Preferably, the driving assembly comprises a rotating disc and a spiral track, the rotating disc is rotatably arranged among the four supporting blocks, and the rotating disc is provided with a through hole for the composite pile to pass through;
the spiral track is fixed on the upper surface of the rotating disc and is distributed in a spiral shape; spiral grooves are formed in the lower surfaces of the four clamping blocks, the spiral track sequentially penetrates through the four spiral grooves in the lower surfaces of the clamping blocks, the spiral track is matched with the spiral grooves in a sliding mode, the area of the upper surface of the spiral track is larger than that of the lower surface of the spiral track, and the lower surfaces of the clamping blocks are abutted to the upper surface of the rotating disc.
By adopting the technical scheme, a worker rotates the rotating disc, the rotating disc drives the spiral track to rotate, and the spiral track drives the four clamping blocks to slide towards the direction close to the composite pile, so that the four clamping blocks clamp the composite pile, and the composite pile is fixed on the positioning column; the area of the upper surface of the spiral track is larger than that of the lower surface of the spiral track, so that the clamping block can only slide towards the direction close to or far from the composite pile without moving upwards, and the sliding stability of the clamping block is improved; meanwhile, the lower surface of the clamping block abuts against the upper surface of the rotating disk, and the sliding stability of the clamping block is further improved.
Preferably, the support comprises a connecting block and four connecting rods, the four connecting rods face one ends of the connecting block and are fixedly connected with the connecting block, and one ends, far away from the connecting block, of the four connecting rods are respectively fixedly connected with the four positioning columns.
Through adopting above-mentioned technical scheme, be fixed in the connecting block with four reference columns respectively through four connecting rods to link together four composite pile, have the effect of pinning each other between four spliced poles, thereby increased the stability of four composite pile installations simultaneously.
Preferably, the clamping block faces the side wall of the composite pile, a first arc-shaped groove is formed in the side wall of the composite pile, and the side wall of the composite pile is in clamping fit with the first arc-shaped groove.
Through adopting above-mentioned technical scheme, first arc wall has increased the area of contact between grip block and the composite pile to increased the effort of four grip blocks to the composite pile, and then increased the stability of four grip block centre gripping composite piles.
Preferably, the supporting block is provided with a second arc-shaped groove facing the side wall of the rotating disc, and the side wall of the rotating disc arc-shaped groove is matched with the second arc-shaped groove.
Through adopting above-mentioned technical scheme, the area of contact between supporting shoe and the rotary disk has been increased to the second arc wall to rotary stability of rotary disk has been increased.
Preferably, a holding rod is fixedly arranged on the arc-shaped side wall of the rotating disc, and the lower surface of the holding rod abuts against the top end of the positioning column.
By adopting the technical scheme, the worker rotates the holding rod, and the holding rod drives the rotating disc to rotate, so that the labor is saved; meanwhile, the lower surface of the holding rod is abutted to the top end of the positioning column, so that the rotating stability of the holding rod is improved, and the rotating stability of the rotating disk is improved.
Preferably, a screw rod is in threaded fit with the holding rod, and the bottom end of the screw rod abuts against the top end of the positioning column.
Through adopting above-mentioned technical scheme, the frictional force between screw rod and the reference column has the fixed action to holding the pole.
Preferably, a knob is fixedly arranged on the screw rod.
Through adopting above-mentioned technical scheme, the staff rotates the screw rod through rotatory knob, has laborsaving effect.
Preferably, the fixed block that is provided with is fixed to the lateral wall of reference column, wear to be equipped with the bolt on the fixed block, the bolt with the screw-thread fit of cured layer.
Through adopting above-mentioned technical scheme, the staff is fixed in the fixed block in the layer of solidifying through the bolt to on being fixed in the layer of solidifying with the reference column, increased the convenience of staff's installation and dismantlement reference column.
In summary, the present application includes at least one of the following beneficial technical effects:
1. compared with the in-situ soil layer, the solidified layer has higher hardness than the in-situ soil layer, the solidified layer has larger supporting force on the positioning column, the mounting firmness of the positioning column is improved, the four fixing rings are connected together through the support, so that the four composite piles are connected together, the four composite piles are further connected together, and the four composite piles have a mutual restraining effect, so that the stability of the four composite piles embedded in the in-situ soil layer is improved;
2. the worker drives the four clamping blocks to slide towards the direction close to the composite pile through the driving assembly, so that the four clamping blocks are abutted against the side wall of the composite pile, the four clamping blocks have a clamping effect on the composite pile, the composite pile and the positioning column are fixed together, and the mounting stability of the composite pile is improved;
3. the rotary disc is rotated by a worker, the rotary disc drives the spiral track to rotate, and the spiral track drives the four clamping blocks to slide towards the direction close to the composite pile, so that the four clamping blocks clamp the composite pile, and the composite pile is fixed on the positioning column; the area of the upper surface of the spiral track is larger than that of the lower surface of the spiral track, so that the clamping block can only slide towards the direction close to or far from the composite pile without moving upwards, and the sliding stability of the clamping block is improved; meanwhile, the lower surface of the clamping block abuts against the upper surface of the rotating disk, and the sliding stability of the clamping block is further improved.
Drawings
Fig. 1 is a schematic structural view of a stiff composite pile according to an embodiment of the present application.
Fig. 2 is a schematic structural view of a clamping mechanism according to an embodiment of the present application.
Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.
Description of reference numerals:
1. compounding piles; 11. concrete piles; 12. PHC tubular pile; 2. a positioning column; 21. positioning holes; 22. a fixed block; 3. a support; 31. connecting blocks; 32. a connecting rod; 4. a clamping assembly; 41. a support block; 411. a sliding hole; 412. a fixed part; 413. a second arc-shaped slot; 42. a clamping block; 421. a slide bar; 422. a first arc-shaped slot; 423. a helical groove; 5. a drive assembly; 51. rotating the disc; 511. a holding rod; 512. a through hole; 52. a spiral track; 53. a screw; 531. a knob; 6. curing the layer; 7. an in-situ soil layer; 8. a support 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 stiff composite pile. Referring to fig. 1, the stiff composite pile comprises four composite piles 1 inserted into an in-situ soil layer 7, a supporting layer 8 is arranged on the lower surface of the in-situ soil layer 7, the bottom ends of the composite piles 1 are inserted into the in-situ soil layer 7, and the bottom end of each composite pile 1 abuts against the upper surface of the supporting layer 8, so that the supporting layer 8 stably supports a pile body.
With continued reference to fig. 1, each composite pile 1 includes a concrete pile 11 and a PHC pile 12 fixed in the concrete pile 11, and the top end of the PHC pile 12 is located above the top end of the concrete pile 11. Every composite pile 1 is last all to be provided with reference column 2 that is used for fixed composite pile 1, is provided with the support 3 that is used for connecting four reference columns 2 between four reference columns 2, all is provided with the clamping mechanism who is used for pressing from both sides tight composite pile 1 on every reference column 2.
Referring to fig. 2 and 3, a positioning hole 21 for positioning the pile body is formed in the top end of the positioning column 2 along the vertical direction, the top end of the composite pile 1 penetrates through the positioning hole 21, and the outer side wall of the composite pile 1 is grounded to the inner side wall of the positioning hole 21. Specifically, cured layer 6 has been laid to normal position soil layer 7 upper surface, and the bottom butt of reference column 2 has two fixed blocks 22 in cured layer 6's upper surface, reference column 2's lateral wall integrated into one piece, and two fixed blocks 22's lower surface all butts in cured layer 6's upper surface. Wear to be equipped with the bolt on the fixed block 22, the bolt all with the 6 threaded connection in layer of solidifying, is fixed in the 6 upper surfaces in layer of solidifying fixed block 22 to be fixed in the 6 upper surfaces in layer of solidifying with reference column 2, increased the staff installation and dismantled reference column 2's convenience.
Referring to fig. 2, the support 3 includes connecting block 31 and four connecting rods 32, and the shape of connecting block 31 is the cake form, and four connecting rods 32 are close to the one end of connecting block 31 all with connecting block 31 integrated into one piece, and the one end that connecting block 31 was kept away from to four connecting rods 32 respectively with four reference column 2 integrated into one piece to link together four reference columns 2, and then link together four composite pile 1. The four composite piles 1 have the function of mutual traction, so that the stability of the four composite piles 1 embedded in the in-situ soil layer 7 is improved.
Referring to fig. 1 and 3, the clamping mechanism comprises four clamping assemblies 4 and a driving assembly 5, wherein the four clamping assemblies 4 are uniformly distributed on the top end of the positioning column 2 in the circumferential direction. Specifically, every centre gripping subassembly 4 all includes supporting shoe 41 and grip block 42, the shape of supporting shoe 41 is the cuboid, supporting shoe 41 deviates from the lateral wall integrated into one piece of composite pile 1 and has fixed part 412, the lower surface butt of fixed part 412 in the top of reference column 2, wear to be equipped with two bolts on the fixed part 412, two bolts all with reference column 2 screw-thread fit, thereby be fixed in fixed part 412 on reference column 2, and then be fixed in reference column 2 with supporting shoe 41 on, the convenience that the staff installed and dismantled supporting shoe 41 has been increased. The clamping block 42 is rectangular, a sliding rod 421 is integrally formed on the side wall of the clamping block 42 facing the supporting block 41, and the sliding rod 421 is cylindrical. The lateral wall of supporting shoe 41 sets up the slip hole 411 that runs through, and the slip pole 421 is kept away from the one end of grip block 42 and is passed slip hole 411, and slip pole 421 and slip hole 411 sliding fit. The drive assembly 5 is used to drive the four gripping blocks 42 to slide towards and away from the composite pile 1, thereby facilitating the gripping of the composite pile 1 by the four gripping blocks 42.
With continued reference to fig. 1 and 3, in order to increase the acting force of the four clamping blocks 42 on the composite pile 1, first arc-shaped grooves 422 are formed at one ends of the four clamping blocks 42 close to the composite pile 1, and the outer side wall of the composite pile 1 is in clamping fit with the first arc-shaped grooves 422.
With continued reference to fig. 1 and 3, the driving assembly 5 includes a rotating disc 51 and a spiral track 52, the rotating disc 51 is rotatably disposed between the four supporting blocks 41, a through hole 512 for the composite pile 1 to pass through is formed on the upper surface of the rotating disc 51, and the outer side wall of the composite pile 1 is matched with the through hole 512. The spiral track 52 is integrally formed on the upper surface of the rotating disc 51, the spiral track 52 is spirally distributed, and the area of the upper surface of the spiral track 52 is larger than that of the lower surface of the spiral track 52. The spiral grooves 423 are formed in the lower surfaces of the four clamping blocks 42, the spiral tracks 52 sequentially penetrate through the spiral grooves 423 in the lower surfaces of the four clamping blocks 42, the spiral tracks 52 are in sliding fit with the spiral grooves 423, and the lower surfaces of the clamping blocks 42 abut against the upper surface of the rotating disc 51. So set up, the staff can be through rotating rotary disk 51, and rotary disk 51 drives four grip blocks 42 and slides towards the direction of being close to or keeping away from composite pile 1 to be convenient for four grip blocks 42 to press from both sides tight composite pile 1.
Referring to fig. 3, in order to increase the rotation stability of the rotating disk 51, the four supporting blocks 41 are respectively provided with a second arc-shaped groove 413 facing the side wall of the rotating disk 51, and the arc-shaped side wall of the rotating disk 51 is matched with the second arc-shaped groove 413. With this arrangement, the contact area between the rotating disk 51 and the four support blocks 41 is increased, thereby increasing the stability of the rotation of the rotating disk 51.
With continued reference to fig. 3, the arc-shaped side wall of the rotating disc 51 is integrally formed with a holding rod 511, and the worker rotates the rotating disc 51 by rotating the holding rod 511, which has a labor-saving effect. Meanwhile, the shape of the holding rod 511 is a cuboid, and the lower surface of the holding rod 511 abuts against the upper surface of the rotating disk 51, so that the rotating stability of the holding rod 511 is improved, and the rotating stability of the rotating disk 51 is further improved.
With continued reference to fig. 3, each holding rod 511 is screw-fitted with a screw 53, and a knob 531 is welded to the top end of the screw 53. The worker rotates the screw 53 by rotating the knob 531, so that the bottom end of the screw 53 abuts against the top end of the positioning post 2, thereby fixing the holding rod 511 to the positioning post 2, and further fixing the rotating disk 51.
By adopting the structure, the forming construction method of the stiff composite pile applied in the embodiment of the application comprises the following steps:
the method comprises the following steps: stirring and solidifying the solidified material and the in-situ soil on the upper surface of the in-situ soil layer 7 in situ to form a solidified layer 6;
step two: sequentially driving the four composite piles 1 into an in-situ soil layer 7 to enable the four composite piles 1 to be distributed in a quadrilateral shape;
step three: each composite pile 1 is provided with a positioning column 2 for positioning the composite pile 1, and the positioning column 2 is fixed on the fixed layer; specifically, two fixing blocks 22 are fixed on the solidified layer 6 through bolts, so that the positioning column 2 is fixed on the solidified layer 6;
step four: the four positioning columns 2 are connected together through a bracket 3; specifically, one ends of the four connecting rods 32 close to the connecting block 31 are integrally formed with the connecting block 31, and one ends of the four connecting rods 32 far away from the positioning block are integrally formed with the four positioning columns 2 respectively;
step five: each composite pile 1 is provided with a clamping mechanism for clamping the positioning column 2; specifically, the rotating disc 51 is sleeved on the composite pile 1, and then the four fixing portions 412 are fixed at the top end of the positioning column 2 through bolts, so that the four supporting blocks 41 are fixed at the top end of the positioning column 2, and the second arc-shaped grooves 413 on the four supporting blocks 41 have a positioning effect on the rotating disc 51, so that the rotating stability of the rotating disc 51 is improved.
Step six: fixing the composite pile 1 and the positioning column 2 together through a clamping mechanism; specifically, the staff drives the rotating disc 51 to rotate through rotating the holding rod 511, and the rotating disc 51 drives the four clamping blocks 42 to slide towards the direction close to the composite pile 1, so that the first arc-shaped grooves 422 on the four clamping blocks 42 are abutted to the arc-shaped side wall of the composite pile 1, and the composite pile 1 is fixed.
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 (10)
1. A forming construction method of a stiff composite pile is characterized by comprising the following steps:
the method comprises the following steps: stirring and solidifying the solidifying material and the in-situ soil on the upper surface of the in-situ soil layer (7) in situ to form a solidified layer (6);
step two: sequentially driving the four composite piles (1) into the in-situ soil layer (7) to enable the four composite piles (1) to be distributed in a quadrilateral shape;
step three: each composite pile (1) is provided with a positioning column (2) for positioning the composite pile (1), and the positioning column (2) is fixed on the fixed layer;
step four: the four positioning columns (2) are connected together through a support (3);
step five: each composite pile (1) is provided with a clamping mechanism for clamping the positioning column (2);
step six: the composite pile (1) and the positioning column (2) are fixed together through a clamping mechanism.
2. The forming construction method of a stiff composite pile according to claim 1, characterized in that: the clamping mechanism comprises four clamping assemblies (4) and a driving assembly (5), and the four clamping assemblies (4) are uniformly distributed at the top end of the positioning column (2) in the circumferential direction;
the clamping assembly (4) comprises a supporting block (41) and a clamping block (42), the supporting block (41) is fixed on the positioning column (2), a sliding rod (421) is fixedly arranged on the clamping block (42), a sliding hole (411) is formed in the supporting block (41), the sliding rod (421) penetrates through the sliding hole (411), and the sliding rod (421) is in sliding fit with the sliding hole (411);
the driving assembly (5) is used for driving the four clamping blocks (42) to slide towards the direction close to or far away from the composite pile (1).
3. The forming construction method of a stiff composite pile according to claim 2, characterized in that: the driving assembly (5) comprises a rotating disc (51) and a spiral track (52), the rotating disc (51) is rotatably arranged among the four supporting blocks (41), and a through hole (512) for the composite pile (1) to pass through is formed in the rotating disc (51);
the spiral track (52) is fixed on the upper surface of the rotating disc (51), and the spiral track (52) is distributed in a spiral shape; spiral grooves (423) are formed in the lower surfaces of the four clamping blocks (42), the spiral track (52) penetrates through the four spiral grooves (423) in the lower surface of the clamping block (42) in sequence, the spiral track (52) is in sliding fit with the spiral grooves (423), the area of the upper surface of the spiral track (52) is larger than that of the lower surface of the spiral track (52), and the lower surface of the clamping block (42) abuts against the upper surface of the rotating disc (51).
4. The forming construction method of a stiff composite pile according to claim 1, characterized in that: support (3) include connecting block (31) and four connecting rods (32), four connecting rod (32) orientation the one end of connecting block (31) with connecting block (31) fixed connection, four connecting rod (32) are kept away from the one end of connecting block (31) respectively with four reference column (2) fixed connection.
5. A forming construction method of a stiff composite pile according to claim 3, characterized in that: first arc wall (422) have been seted up to grip block (42) orientation the lateral wall of composite pile (1), the lateral wall of composite pile (1) with first arc wall (422) joint cooperation.
6. A forming construction method of a stiff composite pile according to claim 3, characterized in that: the supporting block (41) is provided with a second arc-shaped groove (413) towards the side wall of the rotating disc (51), and the side wall of the arc-shaped groove of the rotating disc (51) is matched with the second arc-shaped groove (413).
7. A forming construction method of a stiff composite pile according to claim 3, characterized in that: the arc-shaped side wall of the rotating disc (51) is fixedly provided with a holding rod (511), and the lower surface of the holding rod (511) abuts against the top end of the positioning column (2).
8. The forming construction method of a stiff composite pile according to claim 7, characterized in that: a screw rod (53) is matched on the holding rod (511) in a threaded manner, and the bottom end of the screw rod (53) is abutted against the top end of the positioning column (2).
9. The forming construction method of a stiff composite pile according to claim 8, characterized in that: and a knob (531) is fixedly arranged on the screw rod (53).
10. The forming construction method of a stiff composite pile according to claim 1, characterized in that: the side wall of reference column (2) is fixed and is provided with fixed block (22), wear to be equipped with the bolt on fixed block (22), the bolt with solidify layer (6) screw-thread fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110898791.4A CN113445500A (en) | 2021-08-05 | 2021-08-05 | Forming construction method of stiff composite pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110898791.4A CN113445500A (en) | 2021-08-05 | 2021-08-05 | Forming construction method of stiff composite pile |
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| CN113445500A true CN113445500A (en) | 2021-09-28 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2133299A (en) * | 1999-03-22 | 2000-09-28 | Vickars Developments Co. Ltd. | Method and apparatus for forming piles in place |
| CN111877302A (en) * | 2020-08-25 | 2020-11-03 | 广东劲拓建设工程有限公司 | Foundation construction method for in-situ solidification of surface soil and pile combined bearing |
| CN212001099U (en) * | 2020-03-13 | 2020-11-24 | 陈丽清 | Clamping mechanism of fixing mechanical device for building pile |
| CN112900438A (en) * | 2021-01-21 | 2021-06-04 | 长沙学院 | Clamp for improving impact resistance of tubular pile and using method |
-
2021
- 2021-08-05 CN CN202110898791.4A patent/CN113445500A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2133299A (en) * | 1999-03-22 | 2000-09-28 | Vickars Developments Co. Ltd. | Method and apparatus for forming piles in place |
| CN212001099U (en) * | 2020-03-13 | 2020-11-24 | 陈丽清 | Clamping mechanism of fixing mechanical device for building pile |
| CN111877302A (en) * | 2020-08-25 | 2020-11-03 | 广东劲拓建设工程有限公司 | Foundation construction method for in-situ solidification of surface soil and pile combined bearing |
| CN112900438A (en) * | 2021-01-21 | 2021-06-04 | 长沙学院 | Clamp for improving impact resistance of tubular pile and using method |
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Application publication date: 20210928 |
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