CN114197439A - Construction method and construction equipment for high-inrush-current deepwater underwater gravel pile - Google Patents
Construction method and construction equipment for high-inrush-current deepwater underwater gravel pile Download PDFInfo
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- CN114197439A CN114197439A CN202111511779.XA CN202111511779A CN114197439A CN 114197439 A CN114197439 A CN 114197439A CN 202111511779 A CN202111511779 A CN 202111511779A CN 114197439 A CN114197439 A CN 114197439A
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- pile
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- ship
- positioning
- feeding
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/16—Slings with load-engaging platforms or frameworks
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/10—Placing gravel or light material under water inasmuch as not provided for elsewhere
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
- E02D3/054—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil involving penetration of the soil, e.g. vibroflotation
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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
- E02D5/24—Prefabricated piles
- E02D5/28—Prefabricated piles made of steel or other metals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
- G01S19/43—Determining position using carrier phase measurements, e.g. kinematic positioning; using long or short baseline interferometry
Abstract
The application relates to a construction method and construction equipment for a high-current deepwater underwater gravel pile, which are applied to the technical field of foundation treatment and comprise the following steps: positioning a ship, namely inserting a steel pile on a steel pile dredger into the sea bottom by using the steel pile dredger as a construction platform ship to finish the positioning of the ship; pile position location, the position of the gravel pile is located by utilizing an RTK real-time dynamic carrier phase difference technology: forming a hole, namely forming a pile hole on the seabed by using a vibroflot; filling, namely adding crushed stone into the hole by using a feeding device to finish filling, wherein the construction equipment is positioned on the sea surface; and (6) piling. In the application, the steel pile dredger is used as the construction platform ship, and the steel piles on the steel pile dredger are inserted into the sea bottom, so that the stability of the construction platform ship is improved, and the construction platform ship has the capability of resisting complex sea conditions such as high surge, high ocean current and the like; the feeding device is independently arranged on the sea surface, and the piling equipment is separated from the feeding device, so that the safety of the construction platform ship and the safety of the whole construction process are improved.
Description
Technical Field
The application relates to the technical field of foundation treatment, in particular to a construction method and construction equipment for a high-current deepwater underwater gravel pile.
Background
In the process of port and wharf construction and channel dredging, construction of gravel piles for underwater foundation reinforcement is an economical and feasible scheme, but the method is located in a construction area with high surge, high flow velocity and influence of channel ship passing, and the existing construction method cannot be used for construction. For example, in a certain port reconstruction project, in order to protect a breakwater at a port door, a gravel pile is adopted for foundation reinforcement in a design consideration; the construction area is positioned at a port pool gate, is 30m away from the main channel and is forbidden to be anchored; the water depth of the construction area is 10-15m, and is influenced by tide, wind wave and passage of a channel ship, and the construction area has high wave surge and large flow velocity; aiming at the complex sea condition, when the construction is carried out on the sea, the construction of the gravel pile is greatly influenced by weather, the accuracy and the quality of the construction of the gravel pile can be influenced by the excessively high water flow speed, the surge and the sea wind, and potential safety hazards can be caused to the construction.
Disclosure of Invention
In order to reduce the influence of offshore weather on construction and improve the construction safety, the application provides a construction method and construction equipment for a high-current deep-water underwater gravel pile.
In a first aspect, the construction method for the underwater gravel pile in the high-current deepwater provided by the application adopts the following technical scheme:
a construction method of a high-current deepwater underwater gravel pile comprises the following steps: positioning a ship, namely inserting a steel pile on a steel pile dredger into the sea bottom by using the steel pile dredger as a construction platform ship to finish the positioning of the ship; pile position positioning, namely separating a P3-DU Beidou high-precision positioning direction-finding receiver and an external antenna by an RTK real-time dynamic carrier phase difference technology, and accurately positioning a vibroflot to a designed pile position under a real-time dynamic visualization condition; forming a hole, namely piling by arranging a rotary crane suspension vibroflot on a construction platform ship, and forming a pile hole on the seabed; filling, namely adding crushed stone into the hole by using a feeding device, gradually filling the crushed stone from bottom to top, and positioning construction equipment on the sea surface; and (4) piling, namely compacting the filler by sectional reciprocating vibration of the vibroflot to form the gravel pile.
By adopting the technical scheme, the dredger is fixed by the steel piles, so that the stability of the construction platform ship is improved, and the dredger has the capability of resisting complex sea conditions such as high surge, high ocean current and strong wind; the steel piles are used for positioning, so that the space outside the ship body is not occupied, and the influence of an anchor cable fixing mode on navigation of a channel is avoided; the construction is carried out by directly connecting the vibroflot with the crane on the construction platform ship, the construction platform ship only needs rough positioning, the pile position can be accurately positioned only by operating the crane, about 20-30 gravel piles can be constructed on one ship position, the ship positioning time is saved, the ship moving times are reduced, and the efficiency can be greatly improved; the main machine of the P3-DU Beidou high-precision positioning direction-finding receiver is separated from the antenna, so that the positioning precision of the vibroflotation device is ensured, and the construction drawing and the vibroflotation device are displayed on the same interface through the display screen, so that the operation of an operator is simpler, more convenient and faster; the feeding device is arranged on the sea surface and separated from the platform piling equipment, so that the safety of the construction platform ship and the safety of the whole construction are improved.
In a second aspect, the application provides a construction equipment of underwater gravel pile construction adopts following technical scheme:
a construction device for underwater gravel pile construction comprises a feeding device, a material pipe, a vibroflot and a construction platform ship, wherein one end of the material pipe is connected to the construction platform ship, the other end of the material pipe is inserted into a hole, the vibroflot is installed on the material pipe, and the feeding device comprises a floating platform, a feeding hopper and a driving piece for driving the feeding hopper to feed materials into the material pipe;
the floating platform comprises a floating barrel and a workbench, the workbench is connected to the floating barrel, the feed hopper is arranged on the workbench, and the driving piece is connected with the feed hopper.
By adopting the technical scheme, the long-arm excavator on the stone ship is utilized to firstly add crushed stones into the feeding hopper, and then the driving piece is utilized to drive the feeding hopper to feed the crushed stones into the material pipe, so that feeding is completed; utilize flotation pontoon and workstation, realized material loading on water, with loading attachment and pile equipment separation setting, improved the security of construction.
Optionally, the driving member includes a crane arranged on the construction platform ship and a stop lever arranged on the feeding hopper, the feeding hopper is hinged with a lifting frame, the material pipe is communicated with a feeding bin, the feeding bin is provided with two stop arms, the two stop arms are arranged oppositely, the two stop arms are provided with slots which are matched with the stop lever in an inserting manner, and the slots and the stop lever are arranged oppositely along a vertical direction; the feeding bin is hinged with a guide frame, a pulley is rotatably connected to the guide frame, a guide groove is formed in the peripheral wall of the pulley, a first lifting rope and a second lifting rope are arranged on the crane, the first lifting rope penetrates through the guide groove to be connected with the lifting frame, and the second lifting rope is connected with the feeding bin.
By adopting the technical scheme, a constructor starts the crane, the feeding hopper is hoisted by utilizing the first hoisting rope, when the stop lever is inserted into the slot of the stop arm, the feeding hopper rotates under the tension of the first hoisting rope, meanwhile, the guide frame rotates under the pushing of the feeding hopper, and the feeding hopper pours crushed stone into the material pipe to finish feeding; the guide frame is matched with the pulley, and has a certain guiding function, so that the stop lever can be inserted into the slot; and hoisting and lowering the feeding bin by using a second hoisting rope so as to pile the underwater vibroflot.
Optionally, two H-shaped steels are connected between the two buoys, the two H-shaped steels are arranged oppositely, one of the two H-shaped steels is connected with the workbench, the H-shaped steel and the buoys form a connecting hole in a surrounding mode, and the material pipe penetrates through the connecting hole.
Optionally, the construction platform ship is provided with a positioning steel pile and a lifting truss, and the positioning steel pile is connected with the lifting truss through a steel wire rope.
Optionally, a P3-DU big dipper high accuracy positioning direction-finding receiver is arranged in the cab of the crane, an external antenna is arranged on the boom of the crane, and the external antenna is connected with the P3-DU big dipper high accuracy positioning direction-finding receiver through a shielded cable.
In summary, the present application includes at least one of the following beneficial technical effects:
1. in the application, the steel pile dredger is fixed by using the steel pile, so that the stability of the construction platform ship is improved, and the construction platform ship has the capability of resisting complex sea conditions such as high surge, high ocean current and strong wind; the steel piles are used for positioning, so that the influence of an anchor cable fixing mode on navigation of the channel is avoided; the loading device is arranged on the sea surface, so that the weight of the construction platform ship is reduced, and the safety of the construction platform ship and the safety of the whole construction are improved;
2. in the application, the shipboard crane is directly connected with the vibroflot for construction, the construction platform ship only needs rough positioning, the pile position can be accurately positioned only by operating the crane, about 20-30 gravel piles can be constructed in one ship position, the ship positioning time is saved, the ship moving times are reduced, and the construction efficiency is improved;
3. through setting up P3-DU big dipper high accuracy location direction finding receiver host computer and antenna separation in this application, guaranteed to shake and to dash the ware position and can fix a position accurately in real time, will construct drawing and shake through the display screen again and dash the ware position visual, make operating personnel's operation simple and convenient more swift.
Drawings
Fig. 1 is a schematic plan view for embodying construction equipment in an embodiment of the present application.
Fig. 2 is a schematic structural diagram for embodying a feeding device in the embodiment of the present application.
Fig. 3 is an enlarged view at a in fig. 2.
Fig. 4 is an enlarged view at B in fig. 2.
Fig. 5 is a schematic flow chart for embodying the construction method in the embodiment of the present application.
Description of reference numerals: 1. a floating platform; 11. a float bowl; 12. a work table; 121. breaking stone holes; 14. a tire; 15. h-shaped steel; 16. connecting holes; 2. a hopper; 21. a base; 22. a stop lever; 23. a lifting frame; 3. a drive member; 31. a first lifting rope; 32. a second suspension wire; 4. a material pipe; 41. a feeding bin; 42. a feed hopper; 43. a catch arm; 431. a slot; 44. a mounting frame; 45. a guide frame; 46. a pulley; 461. a guide groove; 47. a V-shaped rod; 48. a support bar; 49. a limiting plate; 491. a limiting groove. 5. A vibroflotation device; 6. a construction platform vessel; 61. positioning the steel pile; 62. a lifting truss; 7. and (5) a crane.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
Example 1
Embodiment 1 discloses construction equipment for underwater gravel pile construction.
Referring to fig. 1, the construction equipment for underwater gravel pile construction comprises a feeding device, a material pipe 4, a vibroflot 5 and a construction platform ship 6, wherein a crane 7 is arranged on the construction platform ship 6, a second lifting rope 32 is arranged on the crane 7, the second lifting rope 32 is fixedly connected with the material pipe 4, the material pipe 4 is vertically arranged, the bottom end of the material pipe 4 is inserted into the sea bottom, and the vibroflot 5 is arranged on the material pipe 4; the construction platform ship 6 is a steel pile dredger, the construction platform ship 6 is provided with a positioning steel pile 61 and a lifting truss 62, the positioning steel pile 61 is connected with the lifting truss 62 through a steel wire rope, and the positioning steel pile 61 is inserted into the seabed.
Referring to fig. 2, the feeding device comprises a floating platform 1, a feeding hopper 2 placed on the floating platform 1, and a driving member 3 for driving the feeding hopper 2 to feed materials into a material pipe 4, wherein the driving member 3 is connected with the feeding hopper 2.
Referring to fig. 2, the floating platform 1 comprises two oppositely arranged buoys 11 and a workbench 12 connected between the two buoys 11, three tires 14 are hung on the cylinder walls of the two buoys 11 which are deviated from each other, and the three tires 14 are arranged at equal intervals; the workbench 12 is fixedly connected between the two buoys 11, a plurality of gravel holes 121 are formed in the workbench 12, and the length of the workbench 12 is smaller than that of the buoys 11; two H-shaped steels 15 are fixedly connected between the two buoys 11, the two H-shaped steels 15 are arranged oppositely, one H-shaped steel 15 is fixedly connected with the workbench 12, and the two H-shaped steels 15 and the two buoys 11 form a connecting hole 16 in a surrounding manner; tires 14 are hung on the opposite inner side walls of the two H-shaped steels 15, the tires 14 are hung on the opposite cylinder walls of the two buoys 11, and the material pipe 4 penetrates through the connecting hole 16.
Referring to fig. 1 and 3, the driving member 3 includes a crane 7 disposed on the construction platform ship 6 and a stop lever 22 welded on the hopper 2, a base 21 is welded on the bottom wall of the hopper 2, a lifting frame 23 is hinged on the hopper 2, a first lifting rope 31 is disposed on the crane 7, and the first lifting rope 31 is fixedly connected on the lifting frame 23.
Referring to fig. 2 and 4, a feeding bin 41 is arranged at the top end of the material pipe 4 in a communicating manner, a feeding hopper 42 is arranged on a bin wall of the feeding bin 41 in a communicating manner, blocking arms 43 are welded on the opposite outer side walls of the feeding hopper 42, the two blocking arms 43 are arranged oppositely, slots 431 are formed in the lower surfaces of the blocking arms 43, and the slots are triangular; a mounting frame 44 is welded on the top wall of the feeding bin 41, a guide frame 45 is rotatably connected to the mounting frame 44, a pulley 46 is rotatably connected to the guide frame 45, a guide groove 461 is arranged on the peripheral wall of the pulley 46, and the first lifting rope 31 of the crane 7 penetrates through the guide groove 461; two V-shaped rods 47 are welded on the guide frame 45, the two V-shaped rods 47 are oppositely arranged, and the openings of the V-shaped rods 47 are downward; the welding has the bracing piece 48 on the relative inside wall of feeder hopper 42, and the equal vertical setting of two bracing pieces 48, and the leading truck 45 is taken on the roof of bracing piece 48.
The implementation principle of the embodiment 1 is as follows: the method comprises the following steps of (1) loading crushed stone into a hopper 2, starting a crane 7, lifting the hopper 2 by a first lifting rope 31, when a stop lever 22 on the hopper 2 is inserted into a slot 431 on a stop arm 43, under the tension of the first lifting rope 31, a push rod 235 is abutted against a V-shaped rod 47, the push rod 235 pushes a guide frame 45 to rotate, meanwhile, the hopper 2 rotates, and the hopper 2 pours the crushed stone into a feeding bin 41 to finish feeding; the pipe 4 is hoisted or lowered by the second hoisting rope 32 so that the vibroflot 5 piles.
The embodiment 1 also discloses a construction method of the high-inrush-current deepwater underwater gravel pile.
Referring to fig. 5, a construction method of a high-current deepwater underwater gravel pile comprises the following steps:
ship positioning, namely towing a construction platform to a construction area under the assistance of a tow boat, completing rough positioning of a planned construction area by utilizing a self-contained navigation system of the ship, and then inserting a positioning steel pile into seabed soil to complete the ship positioning;
pile hole positioning, namely positioning the pile position by using a P3-DU Beidou high-precision positioning direction-finding receiver, arranging an external antenna at the top end of a crane arm, guiding a designed pile position diagram into a P3-DU Beidou high-precision positioning direction-finding receiver main machine, operating the crane according to the indication of a display screen, enabling the position of a vibroflot to coincide with the pile position in a design diagram, and finishing the precise positioning of the position of the gravel pile;
forming a hole, starting the vibroflotation device, drilling a pile hole on the seabed, calculating the position of the pile top according to the tide level and the water depth of the pile, starting recording when the pile enters a mud surface, and finishing the hole forming after the designed pile length is reached;
the filler utilizes the long arm excavator to pack into the metalling into in to the feeding funnel, starts the hoist, and first lifting rope hoists the feeding funnel, and when the pin on the feeding funnel inserted the slot on the pin, under the pulling force of first lifting rope, catch bar and V type pole butt, and the catch bar promoted the leading truck and rotate, and the feeding funnel rotates simultaneously, and the feeding funnel pours the metalling into the feeding storehouse, and the metalling passes through the material pipe and is filled into in the stake hole by the bottom.
And (3) forming a pile, namely, vibrating and extruding the vibroflot up and down in the filler to be compact from the pile bottom to the mud surface, and forming a complete gravel pile after the design dosage is met.
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 (6)
1. A construction method of a high-current deepwater underwater gravel pile is characterized by comprising the following steps: the method comprises the following steps:
positioning a ship, namely inserting a steel pile on a steel pile dredger into the sea bottom by using the steel pile dredger as a construction platform ship to finish the positioning of the ship;
pile position positioning, namely separating a P3-DU Beidou high-precision positioning direction-finding receiver and an external antenna by an RTK real-time dynamic carrier phase difference technology, and accurately positioning a vibroflot to a designed pile position under a real-time dynamic visualization condition;
forming a hole, namely piling by arranging a rotary crane suspension vibroflot on a construction platform ship, and forming a pile hole on the seabed;
filling, namely adding crushed stone into the hole by using a feeding device, and gradually filling the crushed stone from bottom to top, wherein the feeding device is positioned on the sea surface;
and (4) piling, namely compacting the filler by sectional reciprocating vibration of the vibroflot to form the gravel pile.
2. A construction equipment for underwater gravel pile construction of claim 1, comprising: the device comprises a feeding device, a material pipe (4), a vibroflot (5) and a construction platform ship (6), wherein one end of the material pipe (4) is connected to the construction platform ship (6), the other end of the material pipe (4) is inserted into a hole, the vibroflot (5) is installed on the material pipe (4), and the feeding device comprises a floating platform (1), a feeding hopper (2) and a driving piece (3) for driving the feeding hopper (2) to feed materials into the material pipe (4);
the floating platform (1) comprises a floating barrel (11) and a workbench (12), the workbench (12) is connected onto the floating barrel (11), the feed hopper (2) is arranged on the workbench (12), and the driving piece (3) is connected with the feed hopper (2).
3. The underwater gravel pile construction equipment of claim 2, wherein: the driving part (3) comprises a crane (7) arranged on the construction platform ship (6) and a stop lever (22) arranged on the feeding hopper (2), the feeding hopper (2) is hinged with a lifting frame (23), the feeding pipe (4) is communicated with a feeding bin (41), the feeding bin (41) is provided with two stop arms (43), the two stop arms (43) are oppositely arranged, the two stop arms (43) are respectively provided with a slot (431) which is in inserted fit with the stop lever (22), and the slots (431) and the stop lever (22) are oppositely arranged along the vertical direction; articulated on feeding storehouse (41) have leading truck (45), leading truck (45) go up swivelling joint has pulley (46), be equipped with guide way (461) on the perisporium of pulley (46), be equipped with first lifting rope (31) and second lifting rope (32) on hoist (7), first lifting rope (31) pass guide way (461) and are connected with lifting frame (23), second lifting rope (32) are connected with feeding storehouse (41).
4. The underwater gravel pile construction equipment of claim 2, wherein: two be connected with two H shaped steel (15) between flotation pontoon (11), two H shaped steel (15) set up relatively, and one of them H shaped steel (15) are connected with workstation (12), H shaped steel (15) enclose into connecting hole (16) with flotation pontoon (11), connecting hole (16) are passed in material pipe (4).
5. The underwater gravel pile construction equipment of claim 2, wherein: the construction platform ship (6) is provided with a positioning steel pile (61) and a lifting truss (62), and the positioning steel pile (61) is connected with the lifting truss (62) through a steel wire rope.
6. The underwater gravel pile construction equipment of claim 3, wherein: the high-precision positioning and direction-finding device is characterized in that a P3-DU Beidou high-precision positioning and direction-finding receiver is arranged in a cab of the crane (7), an external antenna is arranged on a boom of the crane (7), and the external antenna is connected with the P3-DU Beidou high-precision positioning and direction-finding receiver through a shielded cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111511779.XA CN114197439B (en) | 2021-12-06 | 2021-12-06 | Construction method and construction equipment for high-current deepwater underwater gravel pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111511779.XA CN114197439B (en) | 2021-12-06 | 2021-12-06 | Construction method and construction equipment for high-current deepwater underwater gravel pile |
Publications (2)
| Publication Number | Publication Date |
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| CN114197439A true CN114197439A (en) | 2022-03-18 |
| CN114197439B CN114197439B (en) | 2023-06-27 |
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| CN202111511779.XA Active CN114197439B (en) | 2021-12-06 | 2021-12-06 | Construction method and construction equipment for high-current deepwater underwater gravel pile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320273A (en) * | 2022-03-11 | 2022-04-12 | 江苏交水建智能装备研究院有限公司 | Rotary excavating pile construction process monitoring system based on Internet of things technology |
| CN114808968A (en) * | 2022-03-22 | 2022-07-29 | 中交天津航道局有限公司 | Vibrating gravel pile construction equipment and construction process for replacement treatment of channel engineering foundation |
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| CN2871646Y (en) * | 2005-12-29 | 2007-02-21 | 北京振冲工程股份有限公司 | Vibrating impactor with discharger on bottom |
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| CN114808968A (en) * | 2022-03-22 | 2022-07-29 | 中交天津航道局有限公司 | Vibrating gravel pile construction equipment and construction process for replacement treatment of channel engineering foundation |
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| Publication number | Publication date |
|---|---|
| CN114197439B (en) | 2023-06-27 |
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