CN111663532A - Construction device of static pressure pile sinking structure and installation method thereof - Google Patents
Construction device of static pressure pile sinking structure and installation method thereof Download PDFInfo
- Publication number
- CN111663532A CN111663532A CN202010627831.7A CN202010627831A CN111663532A CN 111663532 A CN111663532 A CN 111663532A CN 202010627831 A CN202010627831 A CN 202010627831A CN 111663532 A CN111663532 A CN 111663532A
- Authority
- CN
- China
- Prior art keywords
- pile
- casing
- static pressure
- concrete
- hydraulic cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/20—Placing by pressure or pulling power
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D11/00—Methods or apparatus specially adapted for both placing and removing sheet pile bulkheads, piles, or mould-pipes
-
- 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
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/385—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with removal of the outer mould-pipes
-
- 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
- E02D5/66—Mould-pipes or other moulds
- E02D5/665—Mould-pipes or other moulds for making piles
-
- 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
- E02D5/72—Pile shoes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0007—Production methods using a mold
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
Abstract
The invention discloses a construction device of a static pressure pile sinking structure and an installation method thereof, and solves the problems that the existing cast-in-place pile has large pile diameter and bad verticality when entering the soil and has large extrusion deformation to the terrain, and the bonding force between concrete and the peripheral soil layer is poor after a pile casing is removed. The static pressure pile has the advantages of reducing extrusion deformation of the soil layer, having good binding force between the pile body and the soil layer and the like.
Description
Technical Field
The invention relates to the technical field of static pressure piles, in particular to a construction device of a static pressure pile sinking structure and an installation method thereof.
Background
The static pressure pile is a pile sinking process for pressing a prefabricated pile into the soil by a pile pressing mechanism of a static pressure pile press through the self weight of the pile pressing machine and the counter weight on a frame, the types of the static pressure pile are more, such as a miniature steel pipe pile, a cast-in-place pile and the like, wherein, the miniature steel pipe pile is suitable for flat areas or soft soil terrains because of small pile diameter, but the miniature steel pipe pile often cannot meet the design requirements for terrains with hard soil or uneven soil, but the cast-in-place pile technology is more advantageous, however, the cast-in-place pile has the defects that the pile is large, the extrusion to the peripheral terrain is large, the soil layer around the pile is large in deformation, the inclination of the peripheral pile foundation is easy to cause, particularly in the process of entering the soil layer, under the condition of poor verticality, the influence on peripheral soil layers and pile foundations is larger, and the combination of concrete and peripheral soil is improved mainly by adopting vibration after the pile casing is lifted by the conventional cast-in-place pile, so that the binding force is poorer.
For this reason, there is a need for an improved cast-in-place pile.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the existing cast-in-place pile has large pile diameter and large extrusion deformation to the terrain due to poor verticality when entering the soil, and the binding force between concrete and a peripheral soil layer is poor after the pile casing is dismantled.
The invention is realized by the following technical scheme:
the construction device of the static pressure pile sinking structure comprises a static pressure device and a pile casing, wherein the static pressure device is used for pressing the pile casing into a soil layer and lifting the pile casing, a plurality of concave parts are arranged on the outer side wall of the pile casing and penetrate through the pile casing, the concave parts open towards the outer side wall of the pile casing, a grouting pipe is arranged in each concave part, and a pile shoe is arranged at the bottom of the pile casing.
The design principle of the invention is as follows: to protect and set up interior recess on the section of thick bamboo, the bottom sets up the pile shoe, the setting up of pile shoe can help protecting a section of thick bamboo and get into the stake ground better, the pile shoe drives the section of thick bamboo that protects and gets into the soil layer and makes the section of thick bamboo produce the extrusion to peripheral soil layer, after getting into the soil layer, open-ended interior recess can not extrude the soil layer, thereby can make the soil layer suitably resume deformation, reduce deformation, and after protecting a section of thick bamboo and entering into predetermined soil layer degree of depth, insert the slip casting pipe and carry out the slip casting, also carry out concrete placement in protecting a section of thick bamboo, thereby make the section of thick bamboo periphery of protecting have concrete and soil layer to combine, concrete in protecting a section of thick bamboo is when promoting protecting a section of thick bamboo, the concrete flows gradually and meets with the outer concrete of protecting a section of thick bamboo, make.
According to the construction device of the static pressure pile sinking structure, the inner concave part is in an arc shape, and the size of the inner concave part along the radial direction of the pile casing is larger than the diameter of the grouting pipe, so that the grouting pipe can be inserted conveniently for grouting operation.
The construction device of the static pressure pile sinking structure is preferable, the top end of the concave part is lower than the top end of the pile casing, and the concave part forms a step in the pile casing.
The invention preferably discloses a construction device of a static pressure pile sinking structure, wherein the static pressure device comprises a support, a hydraulic cylinder and a holding and pressing device, the hydraulic cylinder is connected with the holding and pressing device, the hydraulic cylinder comprises a first hydraulic cylinder and a second hydraulic cylinder, the holding and pressing device comprises a hoop and a pressing plate, the hoop is connected with the first hydraulic cylinder, the pressing plate is connected with the second hydraulic cylinder, when a pile casing is pressed down, the pressing plate props against the step of the pile casing, the diameter of the pressing plate is larger than the diameter of an inscribed circle of the concave part and smaller than the diameter of the pile casing, and the hoop is connected with the side wall of the pile casing.
The construction device of the static pressure pile sinking structure is preferably provided with three first hydraulic cylinders and three second hydraulic cylinders, and the first hydraulic cylinders and the second hydraulic cylinders are arranged at intervals.
According to the invention, the vertical fixation of the protective cylinder is realized in a manner of combining the holding and the jacking, on one hand, the holding hoop holds the outer wall of the protective cylinder, on the other hand, the pressing plate supports against the step, and in the process of pressing down the protective cylinder, the first hydraulic cylinder applies force to the holding hoop and the second hydraulic cylinder applies force to the pressing plate simultaneously and downwards to the protective cylinder, so that the verticality of the protective cylinder can be better maintained.
The invention preferably discloses a construction device of a static pressure pile sinking structure, and further comprises an inner pipe, wherein the inner pipe is used for extruding concrete in the pile casing.
An installation method of a construction device of a static pressure pile sinking structure comprises the following steps:
step 1: installing a protective cylinder on the hoop, adjusting a second hydraulic cylinder to enable a pressure plate to abut against the step of the protective cylinder, and pressing the protective cylinder down to a preset position;
step 2: inserting a grout tube into the interior recess;
and step 3: loosening the protective cylinder, moving the anchor ear and the pressing plate upwards, putting a reinforcement cage into the protective cylinder, lifting the protective cylinder upwards while pouring concrete, and simultaneously pouring elastic concrete into the grouting pipe;
and 4, step 4: and after grouting, vibrating the concrete by using a vibrating device to form the pile.
When the pile casing is pressed down, the inward concave part reduces the extrusion deformation of the pile casing to the surrounding soil layer, when the pile casing reaches a preset pile position, the grouting pipe is inserted to inject the elastic concrete, and under the condition of gradually lifting the pile casing, the concrete is poured in the pile casing, so that on one hand, the elastic concrete is favorable for improving the combination with the surrounding soil layer, and the extrusion to the soil layer can be reduced compared with the common concrete, on the other hand, after the pile casing is lifted, the concrete poured in the pile casing is combined with the elastic concrete in a meeting mode, the outer side of the concrete is formed near the inward concave part, the high-strength concrete of the inner layer improves the adaptability of the cast pile to the soil layer, and the deformation effect of the surrounding soil layer is reduced.
According to the installation method of the construction device of the static pressure pile sinking structure, the rising speed of the elastic concrete is higher than that of the pile casing when the grouting pipe is grouted in the step 3, so that the elastic concrete can be filled in the concave part contacting with the soil layer.
In the step 3, before the steel reinforcement cage is placed, the inner cylinder is firstly installed on the hoop, concrete is injected into the pile casing, the inner cylinder is pressed downwards to extrude the concrete in the pile casing from the bottom of the pile casing, and the concrete is diffused to the periphery under the extrusion of the inner cylinder to form a thick pile bottom, so that the anchoring property of the cast-in-place pile is improved.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the outer side wall of the pile casing is provided with the plurality of vertical concave parts, so that the extrusion to the peripheral soil layer can be reduced in the process of feeding the pile casing into the soil layer, and during pouring, the elastic concrete is poured into the inner concave part through the grouting pipe, and the extrusion deformation to the peripheral soil layer can be relieved after pile forming.
2. During grouting, the elastic concrete outside the pile casing and the concrete inside the pile casing are simultaneously grouted, so that the concrete of the pile body is more uniformly and fully distributed, and the binding force with a soil layer is increased.
3. The invention forms steps at the bottom of the pile casing through the concave part, and adopts the modes of holding the pile casing and propping against the steps when the pile casing is put into the ground, thereby effectively ensuring the verticality of the soil under the pile casing.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic structural view of the casing of the present invention when soil is discharged.
FIG. 2 is a schematic view of the inner barrel of the present invention when pressed down.
Fig. 3 is a schematic perspective view of the casing of the present invention.
Fig. 4 is a schematic end structure view of the casing of the present invention.
Reference numbers and corresponding part names in the drawings:
1-pile casing, 2-concave part, 3-grouting pipe, 4-pile shoe, 5-step, 6-bracket, 7-first hydraulic cylinder, 8-second hydraulic cylinder, 9-hoop, 10-pressing plate and 11-inner cylinder.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
As shown in fig. 1-4, a construction device of a static pressure pile sinking structure comprises a static pressure device and a pile casing 1, wherein the static pressure device is used for pressing the pile casing 1 into a soil layer and lifting the pile casing 1, the outer side wall of the pile casing 1 is provided with a plurality of concave parts 2, the concave parts 2 penetrate through the pile casing 1, the concave parts 2 are opened towards the outer side wall of the pile casing 1, a grouting pipe 3 is arranged in the concave parts 2, and the bottom of the pile casing 1 is provided with a pile shoe 4.
The inner concave part 2 is arc-shaped, the inner concave part 2 is larger than the diameter of the grouting pipe 3 along the radial size of the protective cylinder 1, and the grouting pipe 3 is convenient to insert for grouting operation.
The static pressure device comprises a support 6, a hydraulic cylinder and a holding and pressing device, the hydraulic cylinder is connected with the holding and pressing device, the protective cylinder 1 enters the soil through the holding and pressing device, and the holding and pressing device in the embodiment can be realized by adopting the prior art.
To protect and set up interior recess 2 on the section of thick bamboo 1, the bottom sets up pile shoe 4, the setting up of pile shoe 4 can help protecting section of thick bamboo 1 to get into the stake ground better, pile shoe 4 drives and protects section of thick bamboo 1 and get into the soil layer and make protecting section of thick bamboo 1 produce the extrusion to peripheral soil layer, after getting into the soil layer, open-ended interior recess 2 can not contact with the soil layer, thereby can make the soil layer suitably resume deformation, reduce deformation, and after protecting section of thick bamboo 1 and enter into predetermined soil layer degree of depth, insert slip casting pipe 3 and carry out the slip casting, also carry out concrete placement in protecting section of thick bamboo 1, thereby make protecting section of thick bamboo 1 periphery have concrete and soil layer to combine, concrete in protecting section of thick bamboo 1 promotes protecting section of thick bamboo 1, concrete flows gradually and meets with the concrete outside protecting section of thick bamboo 1, make the concrete can be full of the pile body more fast, and better with.
Example 2
This embodiment is different from embodiment 1 in that the tip of the concave portion 2 is lower than the tip of the casing 1, the concave portion 2 forms a step 5 inside the casing 1, and a hydrostatic device is improved.
The static pressure device includes support 6, pneumatic cylinder and embraces the pressure equipment, the pneumatic cylinder with embrace the pressure equipment and connect, the pneumatic cylinder includes first pneumatic cylinder 7 and second pneumatic cylinder 8, embrace the pressure equipment and include staple bolt 9 and clamp plate 10, staple bolt 9 with first pneumatic cylinder 7 is connected, clamp plate 10 is connected with second pneumatic cylinder 8, and when a section of thick bamboo 1 is protected in the pushing down, clamp plate 10 supports protect the step 5 of a section of thick bamboo 1, the diameter of clamp plate 10 is greater than the diameter of the inscribed circle of interior concave part 2 and be less than protect the diameter of a section of thick bamboo 1, staple bolt 9 is connected protect the lateral wall of a section of thick bamboo 1.
The hydraulic system is characterized in that the number of the first hydraulic cylinders 7 is three, and the number of the second hydraulic cylinders 8 is three, and the first hydraulic cylinders 7 are arranged at intervals.
According to the invention, the vertical fixation of the protective cylinder 1 is realized in a manner of combining the holding and the jacking, so that the holding hoop 9 holds the outer wall of the protective cylinder 1 on one hand, and the pressing plate 10 supports the step 5 on the other hand, thus the verticality can be better kept.
Example 3
The difference between this embodiment and embodiment 2 is that the apparatus further includes an inner pipe, the inner pipe is used for extruding the concrete in the casing 1, the inner pipe 11 is pressed downward to extrude the concrete in the casing 1 from the bottom of the casing 1, and the concrete is spread to the periphery under the extrusion of the inner pipe 11 to form a thick pile bottom, thereby improving the anchorage property of the cast-in-place pile.
Example 4
An installation method of a construction device of a static pressure pile sinking structure comprises the following steps:
step 1: installing the protective barrel 1 on a hoop 9, adjusting a second hydraulic cylinder 8 to enable a pressure plate 10 to abut against the step 5 of the protective barrel 1, and pressing the protective barrel 1 downwards to a preset position;
step 2: inserting a grouting pipe 3 into the concave portion 2;
and step 3: loosening the protective cylinder 1, moving the hoop 9 and the pressing plate 10 upwards, putting a reinforcement cage into the protective cylinder 1, lifting the protective cylinder 1 upwards while pouring concrete, and simultaneously pouring elastic concrete into the grouting pipe 3, wherein the elastic concrete is polyurethane concrete;
and 4, step 4: and after grouting, vibrating the concrete by using a vibrating device to form the pile.
According to the invention, when the pile casing 1 is pressed down, the inward concave part 2 reduces the extrusion deformation of the pile casing 1 to the surrounding soil layer, when the pile casing 1 reaches a preset pile position, the grouting pipe 3 is inserted to inject the elastic concrete, and under the condition of gradually lifting the pile casing 1, the concrete is poured in the pile casing 1, so that on one hand, the elastic concrete is beneficial to improving the combination with the surrounding soil layer, and the extrusion to the soil layer can be reduced compared with the common concrete, on the other hand, after the pile casing 1 is lifted, the concrete poured in the pile casing 1 meets and combines with the elastic concrete, and the concrete with elasticity at the outer side and high strength at the inner layer is formed near the inward concave part 2, so that the adaptability of the cast pile to the soil layer is improved, and the deformation effect of the surrounding soil layer is reduced.
In the step 3, the rising speed of the elastic concrete is higher than that of the pile casing 1 when the grouting pipes 3 are grouted, so that the elastic concrete can be filled in the concave part 2 which is in contact with the soil layer.
In the step 3, before the steel reinforcement cage is placed, the inner cylinder 11 is firstly installed on the hoop 9, concrete is injected into the pile casing 1, the inner cylinder 11 is pressed downwards, the inner cylinder 11 extrudes the concrete, the inner cylinder 11 is pressed downwards, the concrete in the pile casing 1 can be extruded from the bottom of the pile casing 1, and the concrete is diffused to the periphery under the extrusion of the inner cylinder 11 to form a thick pile bottom, so that the anchoring property of the cast-in-place pile is improved.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. The construction device of the static pressure pile sinking structure is characterized by comprising a static pressure device and a pile casing (1), wherein the static pressure device is used for pressing the pile casing (1) into a soil layer and lifting the pile casing (1), a plurality of concave parts (2) are arranged on the outer side wall of the pile casing (1), the concave parts (2) penetrate through the pile casing (1), a grouting pipe (3) is arranged in the concave parts (2), and pile shoes (4) are arranged at the bottom of the pile casing (1).
2. The construction equipment of a static pressure pile sinking structure according to claim 1, wherein the inner concave portion (2) is formed in a circular arc shape, and the size of the inner concave portion (2) in the radial direction of the casing (1) is larger than the diameter of the grouting pipe (3).
3. A static pressure pile driving structure construction apparatus as claimed in claim 1 or 2, wherein the tip of the inner recess (2) is lower than the tip of the casing (1), and the inner recess (2) forms a step (5) inside the casing (1).
4. The construction device of a static pressure pile sinking structure according to claim 3, wherein the static pressure device comprises a bracket (6), a hydraulic cylinder and a holding device, the hydraulic cylinder is connected with the holding device, the hydraulic cylinder comprises a first hydraulic cylinder (7) and a second hydraulic cylinder (8), the holding device comprises a hoop (9) and a pressing plate (10), the hoop (9) is connected with the first hydraulic cylinder (7), the pressing plate (10) is connected with the second hydraulic cylinder (8), when the pile casing (1) is pressed down, the pressing plate (10) is abutted against the step (5) of the pile casing (1), the diameter of the pressing plate (10) is larger than that of the inscribed circle of the inner concave part (2) and smaller than that of the pile casing (1), and the hoop (9) is connected with the side wall of the pile casing (1).
5. A construction apparatus for a static pressure pile sinking structure according to any one of claims 1, 2 or 4, wherein the number of the first hydraulic cylinder (7) and the second hydraulic cylinder (8) is three, and the first hydraulic cylinder (7) and the second hydraulic cylinder (8) are arranged at intervals.
6. A construction apparatus for a static pile driving structure according to any one of claims 1, 2 or 4, further comprising an inner pipe for pressing the concrete in the casing (1).
7. A method of installing a construction apparatus for a static pressure pile-sinking structure, characterized in that the construction apparatus for a static pressure pile-sinking structure as claimed in any one of claims 1 to 6 is installed, comprising the steps of:
step 1: the method comprises the following steps that (1) a pile casing (1) is installed on a hoop (9), a second hydraulic cylinder (8) is adjusted to enable a pressing plate (10) to abut against a step (5) of the pile casing (1), and the pile casing (1) is pressed down to a preset position;
step 2: -inserting a grouting pipe (3) into the inner recess (2);
and step 3: loosening the pile casing (1), moving the anchor ear (9) and the pressing plate (10) upwards, putting a reinforcement cage into the pile casing (1), lifting the pile casing (1) upwards while pouring concrete, and simultaneously pouring elastic concrete into the grouting pipe (3);
and 4, step 4: and after grouting, vibrating the concrete by using a vibrating device to form the pile.
8. The method for installing a construction apparatus for a static pressure pile sinking structure according to claim 7, wherein the rising speed of the elastic concrete is greater than the rising speed of the casing (1) when the grout pipes (3) are grouted in the step 3.
9. The method for installing a construction apparatus for a static pressure driven pile sinking structure as claimed in claim 7 or 8, wherein in the step 3, before the reinforcement cage is inserted, the inner cylinder (11) is installed on the anchor ear (9), concrete is injected into the casing (1), and the inner cylinder (11) is pressed down so that the inner cylinder (11) presses the concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010627831.7A CN111663532A (en) | 2020-07-02 | 2020-07-02 | Construction device of static pressure pile sinking structure and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010627831.7A CN111663532A (en) | 2020-07-02 | 2020-07-02 | Construction device of static pressure pile sinking structure and installation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111663532A true CN111663532A (en) | 2020-09-15 |
Family
ID=72390986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010627831.7A Pending CN111663532A (en) | 2020-07-02 | 2020-07-02 | Construction device of static pressure pile sinking structure and installation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111663532A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653055A (en) * | 2021-08-16 | 2021-11-16 | 深圳市勘察测绘院(集团)有限公司 | Device for reducing soil squeezing effect of tubular pile sinking |
| CN113684853A (en) * | 2021-08-27 | 2021-11-23 | 刘山 | Building foundation pile |
| CN114032888A (en) * | 2021-11-22 | 2022-02-11 | 中国电建集团华东勘测设计研究院有限公司 | Grouting pile casing structure for offshore rock-socketed pile and construction method |
-
2020
- 2020-07-02 CN CN202010627831.7A patent/CN111663532A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653055A (en) * | 2021-08-16 | 2021-11-16 | 深圳市勘察测绘院(集团)有限公司 | Device for reducing soil squeezing effect of tubular pile sinking |
| CN113653055B (en) * | 2021-08-16 | 2022-12-30 | 深圳市勘察测绘院(集团)有限公司 | Device for reducing soil squeezing effect of tubular pile sinking |
| CN113684853A (en) * | 2021-08-27 | 2021-11-23 | 刘山 | Building foundation pile |
| CN114032888A (en) * | 2021-11-22 | 2022-02-11 | 中国电建集团华东勘测设计研究院有限公司 | Grouting pile casing structure for offshore rock-socketed pile and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111663532A (en) | Construction device of static pressure pile sinking structure and installation method thereof | |
| CN104234055B (en) | A kind of prefabricated pile post-grouting device and technique thereof | |
| US11365523B2 (en) | Methods for constructing tensionless concrete pier foundations and foundations constructed thereby | |
| US6659692B1 (en) | Apparatus and method for supporting a structure with a pier and helix | |
| CN101298772B (en) | Static pressure sunken tube pedestal concrete pile construction method | |
| US6872031B2 (en) | Apparatus and method of supporting a structure with a pier | |
| US7044686B2 (en) | Apparatus and method for supporting a structure with a pier | |
| KR101311803B1 (en) | Slurry wall underpinning construction method using underpinning concrete tube with uneven surface | |
| CN212670564U (en) | Construction device of static pressure pile sinking structure | |
| RU2319809C1 (en) | Method to reinforce existent building and building structure foundation | |
| CN111254909B (en) | Construction process of composite pile foundation of soft soil area foundation | |
| CN103741682B (en) | The construction method of a kind of carbon fiber cloth bag cast-in-place antiarch surface composition shaped pile | |
| CN212656218U (en) | Heavy pile machine load underpinning structure | |
| CN219825226U (en) | Prestressed precast pile for foundation pit enclosure | |
| CN1187559A (en) | Pipe sinking prefabricated steel concrete club-footed pile and its pile making method and equipment | |
| CN114086595B (en) | Tower crane foundation and stabilizing process thereof | |
| KR101663174B1 (en) | A based pile with based pile tip and construction method therefor | |
| JP2884273B2 (en) | Construction method for high strength cast-in-place concrete piles | |
| CN216405399U (en) | Slow bonding prestress anti-floating anchor rod connecting device | |
| JP3519807B2 (en) | Pile loading device | |
| CN214695653U (en) | Prestressed steel pipe soil nail | |
| CN220486478U (en) | Scalable back pressure auto-lock of deep basal pit is wall even | |
| CN220486479U (en) | Deep foundation pit excavation back pressure self-locking underground continuous wall | |
| CN210658331U (en) | Cast-in-place pile beneficial to reducing anti-friction resistance | |
| CN1598166A (en) | Hollow artificial hole digging bored concrete pile and its construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |