CN114032901A - Device for improving construction efficiency of open pile and construction method - Google Patents
Device for improving construction efficiency of open pile and construction method Download PDFInfo
- Publication number
- CN114032901A CN114032901A CN202111419650.6A CN202111419650A CN114032901A CN 114032901 A CN114032901 A CN 114032901A CN 202111419650 A CN202111419650 A CN 202111419650A CN 114032901 A CN114032901 A CN 114032901A
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- Prior art keywords
- pile
- steel pipe
- open
- pipe fitting
- improving
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- 238000010276 construction Methods 0.000 title claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 61
- 239000010959 steel Substances 0.000 claims abstract description 61
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000003466 welding Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 abstract description 12
- 239000002689 soil Substances 0.000 description 9
- 239000000243 solution Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Images
Classifications
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- 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
- E02D7/24—Placing by using fluid jets
-
- 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
- E02D5/50—Piles comprising both precast concrete portions and concrete portions cast in situ
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
A device for improving the construction efficiency of an open pile and a construction method thereof are disclosed, wherein the device comprises the open pile and a steel pipe fitting; the open pile comprises a cavity for placing the steel pipe fitting; the number of the steel pipe fittings is two or more, and the steel pipe fittings are arranged on the inner wall surface of the cavity; the steel pipe fitting is a hollow pipe fitting, and the steel pipe fitting is provided with a section hole group. The device of the scheme is reasonable in structural design and convenient to operate, and by the construction method, the blocking effect can be reduced in the pile sinking process, the pile sinking efficiency is improved, the blocking effect and the end resistance can be enhanced after pile sinking is completed, and the bearing capacity of the pile is improved.
Description
Technical Field
The invention belongs to the technical field of open pile construction, and particularly relates to a device and a construction method for improving open pile construction efficiency.
Background
The open steel pipe pile and the PHC pile (hereinafter referred to as open pile) have the advantages of convenient hoisting transportation and pile sinking and pile splicing, strong penetration capability, good tensile and bending resistance of the pile body, hammering resistance and the like, so the open steel pipe pile and the PHC pile are widely applied to projects such as ports, wharfs, bridges and the like. In the pile sinking process of the open pile, partial soil body at the pile end is extruded to the periphery, and partial soil body flows into the pile pipe to form a soil plug. Under the action of the friction force inside the pile (namely the friction force between the inner wall of the pile and the soil body), the soil plug is compressed, so that the pile end of the open pile is closed. When the side friction resistance, the end resistance and the self weight of the soil body reach balance, the soil body does not rush in any more, and is completely blocked at the moment, which is similar to a closed pile. The height of the soil plug is related to the depth of the end part of the open pile entering the bearing stratum, the physical and mechanical properties of the bearing stratum, the material performance of the pile wall, the diameter of the pile and other factors. The blocking effect of the pile end soil not only directly affects the piling efficiency, but also affects the bearing capacity of the pile. When the pile is sunk, the blocking effect is higher, the pile sinking efficiency is slower, the designed elevation is difficult to reach, and therefore the bearing capacity of the pile is difficult to reach the design requirement. In addition, some softer holding layers have small end resistance, which affects pile top displacement control, and the blocking effect and the end resistance need to be enhanced.
Disclosure of Invention
In order to overcome the above disadvantages of the prior art, the present invention provides a device and a method for improving the construction efficiency of an open pile, and aims to solve the problems of the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an apparatus for improving construction efficiency of an open pile, comprising:
open piles and steel pipe fittings;
the open pile comprises a cavity for placing the steel pipe fitting;
the number of the steel pipe fittings is two or more, and the steel pipe fittings are arranged on the inner wall surface of the cavity;
the steel pipe fitting is a hollow pipe fitting, and a section hole group is arranged on the steel pipe fitting.
Preferably, the steel pipe is provided along an axial direction of the open pile.
Preferably, the number of the cross-section hole groups is two or more, and the cross-section hole groups are arranged along the axial extension direction of the steel pipe fitting.
Preferably, the section hole group comprises a plurality of through holes, and the through holes are uniformly distributed along the radial direction of the steel pipe fitting.
Preferably, the number of the through holes is 3 to 6.
Preferably, the steel pipe fittings are uniformly distributed along the radial direction of the open pile.
Preferably, the steel pipe fitting is provided with a plurality of fixing parts along the axial direction thereof, and the inner wall surface of the cavity is provided with a fixing part matched with the fixing part.
Preferably, the fixing part is a welding groove, and the fixing part is a welding body connected with the welding groove.
The invention also discloses a construction method, and the device for improving the construction efficiency of the open pile comprises the following steps:
s1: firstly, installing a steel pipe fitting into a cavity of an open pile;
s2: after the construction point position is determined, pile sinking is started;
s3: in the pile sinking process, when the pile is sunk for a certain distance or the resistance is large each time, high-pressure treatment is carried out on the interior of the steel pipe fitting;
s4: stopping pile sinking when the pile sinking reaches the designed elevation according to the step S3;
s5: and after pile sinking is finished, grouting into the steel pipe fitting to enable the inner side of the open pile and the pile end of the open pile to be filled with slurry.
Preferably, in step S3, the high-pressure treatment is specifically performed by injecting high-pressure water or high-pressure gas into the steel pipe.
Compared with the prior art, the invention has the beneficial effects that:
the device for improving the construction efficiency of the open pile has reasonable structural design and convenient operation, and by the construction method, the blocking effect can be reduced in the pile sinking process, the pile sinking efficiency can be improved, the blocking effect and the end resistance can be enhanced after the pile sinking is finished, and the bearing capacity of the pile can be improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a top view of an aspect of the present invention.
Fig. 3 is a flowchart of a construction method to which the present invention is applied.
Fig. 4 is a flow chart of a construction process of a construction method applied to the present invention.
Description of reference numerals:
1-open pile, 2-steel pipe fitting, 3-through hole, 4-fixing part, 5-high pressure water (high pressure gas) and 6-slurry.
Detailed Description
In order to make the technical problems solved, technical solutions adopted, and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention are described in further detail below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1 to 4:
according to the technical scheme, the device for improving the construction efficiency of the open pile comprises:
an open pile 1 and a steel pipe fitting 2;
the open pile 1 comprises a cavity for placing the steel pipe fitting 2;
the number of the steel pipe fittings 2 is two or more, and the steel pipe fittings are arranged on the inner wall surface of the cavity;
the steel pipe fitting 2 is a hollow pipe fitting, and a section hole group is arranged on the steel pipe fitting 2.
The structure of the device comprises two structures of an open pile 1 and a steel pipe fitting 2, and high-pressure water 5 or high-pressure gas is injected into the steel pipe fittings 2 in the pile sinking process, so that the blocking effect is reduced, and the pile sinking efficiency is improved; and after pile sinking is finished, grouting into the steel pipe fitting 2 to enhance the blocking effect and end resistance and improve the bearing capacity of the pile.
Specifically, the steel pipe 2 is provided along the axial direction of the open pile 1.
Specifically, the number of the cross-section hole groups is two or more, and the cross-section hole groups are arranged along the axial extension direction of the steel pipe fitting 2.
Specifically, the section hole group comprises a plurality of through holes 3, and the through holes 3 are uniformly distributed along the radial direction of the steel pipe fitting 2. The uniformly arranged structure can facilitate the circulation of high-pressure water 5 or high-pressure gas and slurry 6.
Specifically, the number of the through holes 3 is 3 to 6.
Specifically, the steel pipe fittings 2 are uniformly distributed along the radial direction of the open pile 1. The steel pipe fittings 2 are evenly distributed on the inner wall surface of the cavity of the open pile 1 along the pile body of the open pile 1, the steel pipe fittings 2 are parallel to each other, the distance is equal, high-pressure water 5 or high-pressure gas injected into the steel pipe fittings 2 is guaranteed to be more even, the blocking effect is effectively reduced, pile sinking efficiency is improved, and grouting uniformity is also improved.
Specifically, the steel pipe fitting 2 is provided with a plurality of fixing portions 4 along the axial direction thereof, and the inner wall surface of the cavity is provided with a fixing member which is matched with the fixing member.
Specifically, the fixing portion 4 is a welding groove, and the fixing member is a welding body connected to the welding groove.
Adopt above-mentioned structure, the fixed knot who sets up between the two constructs, can prevent at the in-process of pile sinking that steel-pipe fitting 2 and open pile 1 take place the dislocation and remove, influence the injection and press and grout operation.
The invention also discloses a construction method, and the device for improving the construction efficiency of the open pile comprises the following steps:
s1: firstly, installing a steel pipe fitting 2 into a cavity of an open pile 1;
s2: after the construction point position is determined, pile sinking is started;
s3: in the pile sinking process, when the pile is sunk for a certain distance or the resistance is large each time, high-pressure treatment is carried out on the interior of the steel pipe fitting 2;
s4: stopping pile sinking when the pile sinking reaches the designed elevation according to the step S3;
s5: and after pile sinking is finished, grouting is carried out in the steel pipe fitting 2, so that the inner side of the open pile 1 and the pile end of the open pile 1 are filled with slurry 6.
Specifically, in step S3, the high-pressure treatment is to inject high-pressure water 5 or high-pressure gas into the steel pipe 2.
According to the above steps, construction can be completed, the device of the technical scheme has reasonable structure and convenient operation, can reduce the blocking effect in the pile sinking process, improves the construction efficiency, can also enhance the blocking effect and the end resistance after pile sinking, improves the bearing capacity of the pile, and can be applied to the construction of the open piles such as the open steel pipe pile and the PHC pile.
In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are used in an orientation or positional relationship merely for convenience in description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, configuration, and operation in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (10)
1. The utility model provides a promote device of open pile efficiency of construction which characterized in that includes:
open piles and steel pipe fittings;
the open pile comprises a cavity for placing the steel pipe fitting;
the number of the steel pipe fittings is two or more, and the steel pipe fittings are arranged on the inner wall surface of the cavity;
the steel pipe fitting is a hollow pipe fitting, and a section hole group is arranged on the steel pipe fitting.
2. The apparatus for improving the efficiency of constructing the open pile according to claim 1, wherein the steel pipe member is disposed along an axial direction of the open pile.
3. The apparatus for improving the efficiency of constructing an open pile according to claim 1, wherein the number of the cross-sectional hole groups is two or more and the cross-sectional hole groups are arranged along the axial direction of the steel pipe.
4. The device for improving the construction efficiency of the open pile according to claim 3, wherein the section hole group comprises a plurality of through holes, and the through holes are uniformly distributed along the radial direction of the steel pipe fitting.
5. The apparatus for improving the efficiency of constructing an open pile according to claim 4, wherein the number of the through-holes is 3 to 6.
6. The apparatus for improving the construction efficiency of the open pile according to claim 1, wherein the steel pipe members are uniformly distributed in a radial direction of the open pile.
7. The apparatus for improving the construction efficiency of the spud pile according to claim 1, wherein the steel pipe member is provided with a plurality of fixing portions along an axial direction thereof, and a fixing member fitted to the fixing portions is provided on an inner wall surface of the cavity.
8. The apparatus for improving the efficiency of constructing an open pile according to claim 7, wherein the fixing part is a welding groove, and the fixing part is a welding body connected to the welding groove.
9. A construction method, wherein the device for improving the construction efficiency of the open pile according to claim 1 is used, and comprises the following steps:
s1: firstly, installing a steel pipe fitting into a cavity of an open pile;
s2: after the construction point position is determined, pile sinking is started;
s3: in the pile sinking process, when the pile is sunk for a certain distance or the resistance is large each time, high-pressure treatment is carried out on the interior of the steel pipe fitting;
s4: stopping pile sinking when the pile sinking reaches the designed elevation according to the step S3;
s5: and after pile sinking is finished, grouting into the steel pipe fitting to enable the inner side of the open pile and the pile end of the open pile to be filled with slurry.
10. The construction method according to claim 9, wherein the high pressure treatment is performed by injecting high pressure water or high pressure gas into the steel pipe in step S3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111419650.6A CN114032901A (en) | 2021-11-26 | 2021-11-26 | Device for improving construction efficiency of open pile and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111419650.6A CN114032901A (en) | 2021-11-26 | 2021-11-26 | Device for improving construction efficiency of open pile and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114032901A true CN114032901A (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111419650.6A Pending CN114032901A (en) | 2021-11-26 | 2021-11-26 | Device for improving construction efficiency of open pile and construction method |
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| CN (1) | CN114032901A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575855A (en) * | 2009-05-27 | 2009-11-11 | 徐汉东 | Non soil taking hole guiding process for sinking prestressed pipe pile or prefabricated square pile |
| CN107460869A (en) * | 2017-07-26 | 2017-12-12 | 大成科创基础建设股份有限公司 | Extra high load bearing capacity large-diameter tubular pile and quick pile sinking secondary grouting method |
| CN108643169A (en) * | 2018-06-11 | 2018-10-12 | 北京市地质工程公司 | One kind can slip casting prefabricated pile and its piling construction and grouting method |
| JP2020037857A (en) * | 2018-08-30 | 2020-03-12 | Ｊｆｅスチール株式会社 | Construction method of steel pipe pile |
| CN213709495U (en) * | 2020-11-04 | 2021-07-16 | 山东省机械施工有限公司 | Pile end water jetting auxiliary pile sinking and post grouting device |
| CN214460276U (en) * | 2020-12-23 | 2021-10-22 | 中交路桥建设有限公司 | Be applied to mud jacking steel-pipe pile device of soft foundation |
-
2021
- 2021-11-26 CN CN202111419650.6A patent/CN114032901A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575855A (en) * | 2009-05-27 | 2009-11-11 | 徐汉东 | Non soil taking hole guiding process for sinking prestressed pipe pile or prefabricated square pile |
| CN107460869A (en) * | 2017-07-26 | 2017-12-12 | 大成科创基础建设股份有限公司 | Extra high load bearing capacity large-diameter tubular pile and quick pile sinking secondary grouting method |
| CN108643169A (en) * | 2018-06-11 | 2018-10-12 | 北京市地质工程公司 | One kind can slip casting prefabricated pile and its piling construction and grouting method |
| JP2020037857A (en) * | 2018-08-30 | 2020-03-12 | Ｊｆｅスチール株式会社 | Construction method of steel pipe pile |
| CN213709495U (en) * | 2020-11-04 | 2021-07-16 | 山东省机械施工有限公司 | Pile end water jetting auxiliary pile sinking and post grouting device |
| CN214460276U (en) * | 2020-12-23 | 2021-10-22 | 中交路桥建设有限公司 | Be applied to mud jacking steel-pipe pile device of soft foundation |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220211 |
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| RJ01 | Rejection of invention patent application after publication |