CN113106973A - Construction method of single pile - Google Patents
Construction method of single pile Download PDFInfo
- Publication number
- CN113106973A CN113106973A CN202110238031.0A CN202110238031A CN113106973A CN 113106973 A CN113106973 A CN 113106973A CN 202110238031 A CN202110238031 A CN 202110238031A CN 113106973 A CN113106973 A CN 113106973A
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- Prior art keywords
- pile
- stabilizing platform
- positioning
- platform
- single pile
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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
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/10—Power-driven drivers with pressure-actuated hammer, i.e. the pressure fluid acting directly on the hammer structure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/04—Guide devices; Guide frames
Abstract
The invention discloses a construction method of a single pile, which comprises the steps of conveying a pile stabilizing platform and a positioning pile to a construction area; sinking the pile stabilizing platform into the sea and adjusting the position of the pile stabilizing platform so as to enable the center of a pile embracing device of the pile stabilizing platform to be superposed with the center of the piling position of the single pile; the lower end of the positioning pile penetrates through a sleeve of the pile stabilizing platform and then is inserted into the seabed; driving the pile stabilizing platform to ascend or descend so that the pile stabilizing platform is at a designed elevation, and enabling the height difference of four corners of the pile stabilizing platform to be smaller than or equal to a designed value; conveying the single pile to a pile stabilizing platform, erecting the single pile and enabling the single pile to coincide with the center of the pile gripper; pile grippers on the upper layer and the lower layer of the pile stabilizing platform respectively clamp single piles, and then the single piles sink; hammering the single pile and measuring the verticality of the single pile are alternately carried out, so that the single pile is inserted into the seabed and is at the designed elevation, and the single pile with the verticality exceeding the designed specification is corrected. The perpendicularity of the single pile is alternatively measured, and the perpendicularity and position accuracy of the single pile is guaranteed.
Description
Technical Field
The invention relates to the field of offshore operation equipment, in particular to a construction method of a single pile.
Background
In offshore wind power and bridge projects, fixed piles need to be driven at sea, and a stable pile platform cannot be separated during pile driving. The common pile stabilizing platform is a bottom-supported frame type outer embracing pile stabilizing platform, a movable bottom-supported lifting platform type pile stabilizing platform, a suspension type pile stabilizing platform, a movable platform ship auxiliary bow suspension type pile stabilizing platform and the like.
The bottom frame type external embracing pile stabilizing platform adopts an inverted buckle type steel box girder anti-sinking plate, so that the weight is heavier and the adsorption force is larger; the integral steel sleeve has a limited range of water depth adaptation and is difficult to replace; the external pile embracing ring beam structure is small in size and easy to deform under the action of a large jack. The movable hull of the movable bottom-mounted lifting platform type pile stabilizing platform is large in size and high in manufacturing cost; the construction operation is slow by adopting the plug-in pile leg type, the requirement on geological conditions is high, and the manufacturing cost is high. The suspended pile stabilizing platform is only suitable for shallow water depth areas. The movable platform ship auxiliary bow suspended pile stabilizing platform adopts a suspended pile stabilizing platform, and has higher requirements on the bearing capacity of four temporary piles; the suspended pile stabilizing platform needs to be matched with a mobile platform ship, and the construction cost is high. The situations of inaccurate positioning of the pile stabilizing platform and the single pile and the situation of inclination of the single pile during the installation of the pile stabilizing platform and the single pile often occur.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a single-pile construction method which can accurately position and install a single pile and ensure the verticality of the single pile.
According to the construction method of the single pile, provided by the embodiment of the invention, the pile stabilizing platform and the positioning pile are positioned in place: transporting the pile stabilizing platform and the positioning piles to a construction area through a barge; positioning, sinking and stabilizing the pile platform: sinking the pile stabilizing platform into the sea and adjusting the position of the pile stabilizing platform so as to enable the center of a pile embracing device of the pile stabilizing platform to be superposed with the center of a piling position of a single pile; and (3) driving a positioning pile: inserting the lower end of the positioning pile into the seabed after penetrating through the sleeve of the pile stabilizing platform; heightening and leveling a pile stabilizing platform: driving the pile stabilizing platform to ascend or descend so as to enable the pile stabilizing platform to be at a designed elevation, and enabling the height difference of four corners of the pile stabilizing platform to be smaller than or equal to a designed value; positioning a single pile: conveying a single pile to the pile stabilizing platform, erecting the single pile and enabling the single pile to be coincided with the center of the pile gripper; pile holding of the pile stabilizing platform: the pile grippers on the upper layer and the lower layer of the pile stabilizing platform respectively clamp the single pile, and then the single pile sinks down; single pile driving: hammering the single pile and measuring the verticality of the single pile are alternately carried out, so that the single pile is inserted into the seabed and is at the designed elevation, and the single pile with the verticality exceeding the designed specification is timely rectified.
The construction method of the single pile provided by the embodiment of the invention at least has the following beneficial effects: the center of the pile gripper is superposed with the center of the piling position of the single pile, so that when the pile stabilizing platform clamps the single pile, the single pile is more easily adjusted and is positioned at the piling position required by the design, and the working difficulty and the strength of the subsequent single pile position adjustment are reduced; the positioning pile can be fixed on the sea and can play a role in supporting and positioning the pile stabilizing platform, so that the pile stabilizing platform can be exposed out of the sea surface, and constructors and construction equipment use the pile stabilizing platform as a support; the pile stabilizing platform is at a proper height, so that the operation of constructors and construction equipment is facilitated, the influence of sea stormy waves is avoided, the smooth construction is ensured, the height difference of four corners of the pile stabilizing platform is smaller than or equal to a design value, the pile stabilizing platform is enabled to be close to a horizontal state, and the subsequent verticality measurement of a single pile and the correction of the single pile are facilitated; the accuracy of the position of the single pile and the perpendicularity of the single pile can be guaranteed by alternately hammering the single pile and measuring the perpendicularity of the single pile.
According to some embodiments of the invention, in the pile stabilizing platform and the positioning pile positioning step, the pile stabilizing platform and the positioning pile are both placed on the barge in a side-placing manner, and in the pile positioning and sinking step, two crane ships are used, and the two crane ships respectively hang and hang the upper end and the lower end of the pile stabilizing platform/the positioning pile.
According to some embodiments of the invention, in the step of positioning and sinking the pile stabilizing platform, after the two crane ships erect the pile stabilizing platform, using GPS positioning assistance to align the center of the pile gripper with the center of the piling position of the single pile, and then sinking the pile stabilizing platform, when the pile stabilizing platform approaches the seabed, positioning the pile stabilizing platform again and then sinking the pile stabilizing platform to the seabed.
According to some embodiments of the invention, in the step of driving the positioning piles, the number of the sleeves and the number of the positioning piles are four, and four positioning piles are sequentially inserted into the sleeves according to the order of diagonal lines of the four sleeves.
According to some embodiments of the present invention, in the step of height adjustment and leveling of the pile stabilizing platform, equal-height marks need to be made on all the positioning piles, and in the process of ascending or descending of the pile stabilizing platform, the equal-height marks on all the positioning piles are referred to, so that the pile stabilizing platform reaches a designed elevation and the height difference of four corners of the pile stabilizing platform is less than or equal to a designed value.
According to some embodiments of the invention, the design value of the height difference of the four corners of the pile stabilizing platform is less than or equal to 10 mm.
According to some embodiments of the invention, in the single-pile positioning step, a single-hook three-point hanging mode is adopted, a lifting lug in the middle of the single pile is connected with a hoisting device by a balance lifting beam, the lower end of the single pile is connected with the hoisting device by a tail hook, and the tail hook is removed after the single pile is erected.
According to some embodiments of the invention, in the pile embracing step of the pile stabilizing platform, the single pile sinks by using self weight, after the single pile is preliminarily clamped by the pile embracing device, the verticality of the single pile is less than or equal to 1% per thousand, and then the single pile continues to sink by using self weight to complete the positioning of the single pile.
According to some embodiments of the present invention, in the step of driving the single pile, the single pile is hammered using a hydraulic hammer, the hammering is stopped every 1m of sinking of the single pile, and then the verticality of the single pile is measured.
According to some embodiments of the invention, in the step of driving the single pile, the deviation of the single pile is corrected by separately adjusting the pile grippers on the upper layer and the lower layer of the pile stabilizing platform.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of a construction method of a single pile according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to the orientation description, such as the directions of up, down, front, rear, left, right, etc., may be based on those shown in the drawings, only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1, the invention discloses a construction method of a single pile, which comprises the following steps that a pile stabilizing platform and a positioning pile are positioned in place: transporting the pile stabilizing platform and the positioning piles to a construction area through a barge, and preparing for the next construction; positioning, sinking and stabilizing the pile platform: the pile stabilizing platform is sunk into the sea and the position of the pile stabilizing platform is adjusted, so that the center of a pile embracing device of the pile stabilizing platform is coincided with the center of a piling position of a single pile, and the center of the pile embracing device is coincided with the center of the piling position of the single pile; and (3) driving a positioning pile: the lower end of the positioning pile penetrates through a sleeve of the pile stabilizing platform and then is inserted into the seabed, the lower end of the positioning pile is inserted into the seabed, the positioning pile can be fixed on the sea and can play a role in supporting and positioning the pile stabilizing platform, the pile stabilizing platform can be exposed out of the sea, and constructors and construction equipment use the pile stabilizing platform as a support; heightening and leveling a pile stabilizing platform: the pile stabilizing platform is driven to ascend or descend so as to be located at a designed elevation, the height difference of four corners of the pile stabilizing platform is smaller than or equal to a designed value, the pile stabilizing platform is located at a proper height, operation of constructors and construction equipment is facilitated, influence of sea storms is avoided, smooth construction is guaranteed, the height difference of the four corners of the pile stabilizing platform is smaller than or equal to the designed value, the pile stabilizing platform is approximately located in a horizontal state, and perpendicularity measurement of subsequent single piles and deviation rectification of the single piles are facilitated; positioning a single pile: the single pile is conveyed to the pile stabilizing platform, the single pile is erected, the center of the single pile is coincided with the center of the pile gripper, and the single pile can be prevented from colliding with the pile stabilizing platform or the pile gripper in the sinking process of the single pile; pile holding of the pile stabilizing platform: pile grippers on the upper layer and the lower layer of the pile stabilizing platform respectively clamp the single pile, and then the single pile sinks, so that the single pile can be prevented from overlarge offset in the sinking process of the single pile; single pile driving: hammering the single pile and measuring the verticality of the single pile are alternately carried out so as to enable the single pile to be inserted into the seabed and enable the single pile to be at the designed elevation, the single pile with the verticality exceeding the designed specification is timely corrected, and hammering the single pile and measuring the verticality of the single pile are alternately carried out so as to guarantee the position accuracy of the single pile and the verticality of the single pile.
It can be understood that the number of the pile grippers on the upper layer and the lower layer of the pile stabilizing platform is more than or equal to three, the pile grippers on each layer are located on the same horizontal plane, and the center of a geometric pattern formed by the pile grippers on each layer is the center of the pile grippers. The height adjustment and the leveling of the pile stabilizing platform can adopt a lifting mode of a crane ship or a lifting mode of a positioning pile hanging system. The single pile can be transported by a barge or a crane ship, the positioning of the single pile can be carried out by using a GPS (global positioning system) or taking the position of the pile stabilizing platform as a reference, and the hoisting and sinking of the single pile can be carried out by using the crane ship or a pile stabilizing platform hanging system.
In some embodiments of the invention, in the pile stabilizing platform and the positioning pile positioning step, the pile stabilizing platform and the positioning pile are placed on the barge in a side-placing mode, the gravity centers of the pile stabilizing platform and the positioning pile are lower, so that the pile stabilizing platform and the positioning pile are convenient to transport, in the pile positioning and sinking step, two crane ships are adopted, the two crane ships respectively hang and lift the upper end and the lower end of the pile stabilizing platform/the positioning pile, and in the pile stabilizing platform and the positioning pile lifting process, the pile stabilizing platform and the positioning pile are convenient to erect.
In some embodiments of the invention, in the step of positioning and sinking the pile stabilizing platform, after the pile stabilizing platform is erected by two cranes, the pile embracing device is aligned with the center of the piling position of the single pile by using GPS positioning assistance, then the pile stabilizing platform is sunk, and when the pile stabilizing platform approaches the seabed, the pile stabilizing platform is positioned again and then sunk to the seabed. Firstly, the position of the pile stabilizing platform is prevented from being adjusted greatly in water, and then the pile stabilizing platform is positioned again when the pile stabilizing platform is about to sink on the seabed, so that the positioning precision of the pile stabilizing platform is ensured, and accurate piling of single piles is facilitated.
It can be understood that when the pile stabilizing platform is on the sea surface, the deviation between the center of the control pile gripper and the center of the piling position of a single pile is less than 1 m; when the pile stabilizing platform is close to the seabed, the deviation between the center of the control pile gripper and the center of the piling position of the single pile is less than 0.5 m.
In some embodiments of the invention, in the step of driving the positioning piles, the number of the sleeves and the number of the positioning piles are four, and the four positioning piles are sequentially inserted into the sleeves according to the sequence of the diagonal lines of the four sleeves, so that the sequence can effectively control the deviation of the positioning piles relative to the pile stabilizing platform in the process of inserting the positioning piles into the seabed.
In some embodiments of the invention, in the step of height adjustment and leveling of the pile stabilizing platform, equal-height marks need to be made on all the positioning piles, and in the process of ascending or descending of the pile stabilizing platform, the equal-height marks on all the positioning piles are referred to, so that the pile stabilizing platform reaches the designed elevation and the height difference of four corners of the pile stabilizing platform is smaller than or equal to the designed value. By taking the marks with equal heights as references, the lifting condition of each area of the pile stabilizing platform can be monitored at any time in the lifting or descending process of the pile stabilizing platform, the pile stabilizing platform is prevented from inclining in the lifting process, interference between the sleeve and the positioning pile is avoided, and the pile stabilizing platform is prevented from being damaged.
In some embodiments of the invention, the design value of the height difference of the four corners of the pile stabilizing platform is less than or equal to 10mm, and the higher the levelness of the pile stabilizing platform is, the more beneficial to the measurement and correction of the verticality of the single pile is.
In some embodiments of the invention, in the single-pile positioning step, a single-hook three-point hanging mode is adopted, a lifting lug in the middle of the single pile is connected with a hoisting device by adopting a balance lifting beam, the lower end of the single pile is connected with the hoisting device by adopting a tail hook, and the tail hook is removed after the single pile is erected. The mode is favorable for stably hoisting and conveying the single pile, and the single pile can be in a vertical state by removing the tail hook in the process of sinking the single pile, so that the method is convenient and fast.
In some embodiments of the invention, in the pile holding step of the pile stabilizing platform, the single pile sinks by using self-weight, after the single pile is initially clamped by the pile holding device, the verticality of the single pile is less than or equal to 1 per thousand, and then the single pile continues to sink by using self-weight to complete the positioning of the single pile. Before the single pile is driven into the seabed, the verticality of the single pile is adjusted in advance, and the single pile can be accurately inserted into the seabed.
In some embodiments of the invention, in the single pile driving step, the hydraulic hammer is used for hammering the single pile, the hammering is stopped when the single pile sinks for 1m, and then the verticality of the single pile is measured, so that the verticality of the single pile can be monitored at any time, the single pile is prevented from being excessively inclined, the deviation rectifying workload is reduced, the deviation rectifying difficulty is reduced, and the high-precision single pile driving is realized.
In some embodiments of the invention, in the single pile driving step, the pile embracing devices on the upper layer and the lower layer of the pile stabilizing platform are separately adjusted to correct the single pile, so that the operation is convenient and rapid.
It can be understood that four hanging points are arranged at the upper end of the pile stabilizing platform, and two hanging points are arranged at the lower end of the pile stabilizing platform. Further, steady stake platform from top to bottom connect gradually including upper operation platform, connecting rod and dust guard plate structure, each subsection has a plurality of pile grippers on upper operation platform and the upper operation platform.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. The construction method of the single pile is characterized by comprising the following steps:
the pile stabilizing platform and the positioning pile are in place: transporting the pile stabilizing platform and the positioning piles to a construction area through a barge;
positioning, sinking and stabilizing the pile platform: sinking the pile stabilizing platform into the sea and adjusting the position of the pile stabilizing platform so as to enable the center of a pile embracing device of the pile stabilizing platform to be superposed with the center of a piling position of a single pile;
and (3) driving a positioning pile: inserting the lower end of the positioning pile into the seabed after penetrating through the sleeve of the pile stabilizing platform;
heightening and leveling a pile stabilizing platform: driving the pile stabilizing platform to ascend or descend so as to enable the pile stabilizing platform to be at a designed elevation, and enabling the height difference of four corners of the pile stabilizing platform to be smaller than or equal to a designed value;
positioning a single pile: conveying a single pile to the pile stabilizing platform, erecting the single pile and enabling the single pile to be coincided with the center of the pile gripper;
pile holding of the pile stabilizing platform: the pile grippers on the upper layer and the lower layer of the pile stabilizing platform respectively clamp the single pile, and then the single pile sinks down;
single pile driving: hammering the single pile and measuring the verticality of the single pile are alternately carried out, so that the single pile is inserted into the seabed and is at the designed elevation, and the single pile with the verticality exceeding the designed specification is timely rectified.
2. The method of constructing a mono-pile according to claim 1, wherein: in the step of positioning the pile stabilizing platform and the positioning pile, the pile stabilizing platform and the positioning pile are placed on the barge in a side-placing mode, and in the step of positioning, sinking and stabilizing the pile platform, two crane ships are adopted and respectively hang and hang the upper end and the lower end of the pile stabilizing platform/the positioning pile.
3. The method of constructing a mono-pile according to claim 2, wherein: in the step of positioning, sinking and stabilizing the pile platform, after the two crane ships erect the pile stabilizing platform, the pile embracing device is aligned with the center of the piling position of the single pile by using GPS positioning assistance, then the pile stabilizing platform is sunk, and when the pile stabilizing platform is close to the seabed, the pile stabilizing platform is sunk to the seabed after being positioned again.
4. The method of constructing a mono-pile according to claim 1, wherein: in the step of driving the positioning piles, the number of the sleeves and the number of the positioning piles are four, and the four positioning piles are sequentially inserted into the sleeves according to the sequence of the four diagonal lines of the sleeves.
5. The method of constructing a mono-pile according to claim 1, wherein: in the pile stabilizing platform height adjustment and leveling steps, equal-height marks need to be made on all the positioning piles, and in the process of ascending or descending of the pile stabilizing platform, the equal-height marks on all the positioning piles are referred so that the pile stabilizing platform reaches a designed elevation and the height difference of four corners of the pile stabilizing platform is smaller than or equal to a designed value.
6. The method of constructing a mono-pile according to claim 5, wherein: the design value of the height difference of the four corners of the pile stabilizing platform is less than or equal to 10 mm.
7. The method of constructing a mono-pile according to claim 1, wherein: in the single-pile in-place step, a single-hook three-point hanging mode is adopted, a lifting lug in the middle of the single pile is connected with hoisting equipment through a balance lifting beam, the lower end of the single pile is connected with the hoisting equipment through a tail hook, and the tail hook is removed after the single pile is erected.
8. The method of constructing a mono-pile according to claim 1, wherein: in the pile embracing step of the pile stabilizing platform, the single pile sinks by utilizing the self weight, the pile embracing device clamps the single pile preliminarily, the verticality of the single pile is less than or equal to 1 thousandth, and then the single pile sinks by utilizing the self weight continuously to complete the single pile is in place.
9. The method of constructing a mono-pile according to claim 1, wherein: in the single pile driving step, a hydraulic hammer is used for hammering the single pile, the hammering is stopped when the single pile sinks for 1m, and then the verticality of the single pile is measured.
10. The method of constructing a mono-pile according to claim 1 or 9, wherein: in the single pile driving step, the pile embracing devices on the upper layer and the lower layer of the pile stabilizing platform are separately adjusted to correct the single pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110238031.0A CN113106973A (en) | 2021-03-04 | 2021-03-04 | Construction method of single pile |
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| CN202110238031.0A CN113106973A (en) | 2021-03-04 | 2021-03-04 | Construction method of single pile |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110424394A (en) * | 2019-06-19 | 2019-11-08 | 中广核如东海上风力发电有限公司 | A kind of mobile surely stake platform and its construction technology |
| CN111139830A (en) * | 2020-01-21 | 2020-05-12 | 中交第三航务工程局有限公司江苏分公司 | Seat bottom pile inserting type single pile stabilizing frame and pile sinking method |
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2021
- 2021-03-04 CN CN202110238031.0A patent/CN113106973A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110424394A (en) * | 2019-06-19 | 2019-11-08 | 中广核如东海上风力发电有限公司 | A kind of mobile surely stake platform and its construction technology |
| CN111139830A (en) * | 2020-01-21 | 2020-05-12 | 中交第三航务工程局有限公司江苏分公司 | Seat bottom pile inserting type single pile stabilizing frame and pile sinking method |
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| 张立华: "浅海大桥水中吨综合施工工艺", 《铁道建筑技术》 * |
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