A high-pile wharf protection operation platform suitable for inclined straight piles and an operation method thereof

Abstract

The application discloses a kind of high-pile wharf protection operation platform suitable for inclined straight pile and its operation method, platform includes multiple pile top platforms, is set at the top of pile foundation;At least two pile top tracks are arranged along the length direction of wharf, and the pile top track is installed on the top of multiple pile foundations in the pile row in the length direction of wharf by pile top platform, and adjacent pile top tracks are arranged along the width direction of wharf;Each described pile top platform includes: base, is supported on the top of pile, first vertical telescopic unit is equipped in the inside of base, first vertical telescopic unit can be inserted into the inside of pile foundation by being extended downwards by a certain distance, so that the horizontal direction between the pile top platform and pile foundation is limited;Three-way jack is installed on the base.The high-pile wharf protection operation platform of the application can adapt to offset pile foundation, combined inclined pile and has the advantages of equipment walking across convenient, not limited by space.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pile foundation wharf construction, and more particularly to a high-pile wharf protection operation platform and operation method suitable for inclined straight piles. BACKGROUND

[0002] The construction of wharf bank slope riprap protection usually needs to be carried out underwater, and the operation space is limited. In the traditional process, during the low tide period, engineering ships are used to throw stones on the sea side to assist, and workers manually transport sand and stone materials between piles to carry out riprap protection operations. At this time, the wharf pile foundation has been formed, the underwater space is limited, the construction interference is large, the construction quality is difficult to guarantee, most of the machinery cannot enter the area for construction, the work efficiency is low, there are many on-site personnel, and the construction risk is large.

[0003] At present, there are a small number of inventions that use similar bridge construction field "bridge erecting machine" equipment on the upper structure of the wharf for construction. For example, the patent "high-pile wharf pile inter-digging and riprap operation platform and operation method" mentions a riprap and operation device and method supported on the pile top. According to field research, such devices still have the following technical problems in the implementation process, including:

[0004] First, the pile top device is difficult to adapt to the common pile deviation problem in construction;

[0005] Second, the pile top support is generally for straight piles, and there are few cases of how to support and cross the combined inclined piles of the pile foundation wharf;

[0006] Third, the pile top device is complex to move and cross, and the walking efficiency is low. When replacing the auxiliary legs, manual assistance is usually required.

[0007] Fourth, the overall size of the device is large, and the stability is poor during movement. SUMMARY

[0008] In view of the above technical problems, the present application provides a high-pile wharf protection operation platform and method suitable for inclined straight piles to solve the technical problems that the underwater operation of bank slope protection cannot adapt to the deviation pile foundation, combined inclined piles, and the walking and crossing of the pile top device are inconvenient and the space is limited in the prior art.

[0009] In order to achieve the above technical purpose, the present application adopts the following technical means:

[0010] A high-pile wharf protection operation platform suitable for inclined straight piles, comprising:

[0011] A plurality of pile top platforms are arranged on the top of the pile foundation;

[0012] At least two pile top rails are arranged along the length direction of the wharf, and the pile top rails are installed on the top of a plurality of pile foundations in the pile row in the length direction of the wharf through pile top platforms;

[0013] Each of the pile top platforms comprises:

[0014] A base is supported on the pile top, and a first vertical telescopic unit is arranged inside the base, which can be inserted into the pile foundation by a certain distance downwards to realize horizontal limiting between the pile top platform and the pile foundation;

[0015] A three-way jack is installed on the base;

[0016] A horizontal sliding groove is arranged inside the pile top rail, and a sliding assembly is arranged in the horizontal sliding groove, which can slide along the length direction of the pile top rail in the horizontal sliding groove of the pile top rail, and the horizontal sliding assembly comprises:

[0017] The sliding support part comprises an upper support roller group and a lower support roller group, the upper support roller group is installed on the top of the horizontal sliding groove, the lower support roller group is installed on the bottom of the horizontal sliding groove, and the upper support roller group and the lower support roller group are arranged in parallel;

[0018] A rigid top plate is clamped between the upper support roller group and the lower support roller group;

[0019] A second vertical telescopic unit is arranged on the pile top rail, which can be telescoped towards the rigid top plate to fix the rigid top plate and the pile top rail;

[0020] The vertical supporting shaft of the three-way jack is connected with the rigid top plate, and the pile top platform composed of the three-way jack and the base can move in the horizontal sliding groove relative to the pile top rail or be relatively fixed with the pile top rail under the action of the second vertical telescopic unit;

[0021] A first driving mechanism is installed on the rigid top plate, the rigid top plate is provided with a through groove arranged along the width direction of the pile top rail, the vertical supporting shaft of the three-way jack passes through the through groove and is connected with the first driving mechanism, and the first driving mechanism is used to drive the pile top platform composed of the three-way jack and the base to move in the through groove along the width direction of the pile top rail to correspond to the deviated pile foundation;

[0022] An upper operation mechanism is arranged on the upper part of the pile top rail and is fixedly connected with the pile top rail, and is used for rock throwing operation.

[0023] The first vertical telescopic unit and the second vertical telescopic unit are air cylinders or hydraulic cylinders.

[0024] The first driving mechanism is a hub motor, and the jacking shaft of the three-way jack is suspended and supported on the rigid roof through the hub motor after passing through the through slot.

[0025] The upper operation mechanism is a riprap operation mechanism, comprising:

[0026] The column is fixedly supported at the bottom on the pile top track;

[0027] The cross beam is connected between the columns at the top of the two adjacent pile top tracks in the width direction of the wharf;

[0028] The movable hopper is arranged on the cross beam and can move on the cross beam in the width direction of the wharf.

[0029] The bottom of the movable hopper is provided with a length-adjustable guide pipe.

[0030] The application further discloses a working method of the high-pile wharf protection operation platform based on the inclined straight pile,

[0031] In the width direction of the wharf, at least one pair of pile foundations is arranged between the two pile top tracks in parallel with each other, and a plurality of pile foundation pairs are arranged in the length direction of the wharf, which are respectively a first pile foundation pair, a second pile foundation pair, a third pile foundation pair and an Nth pile foundation pair arranged in the length direction of the wharf in sequence, and N is a positive integer.

[0032] The method comprises the following steps:

[0033] S1: If the pile foundation is not deviated, the region between the first pile foundation pair and the second pile foundation pair is used as a first operation region, the top of the four pile foundations in the first operation region is respectively provided with a pile top platform, the four pile top platforms and the four pile foundations are respectively limited and fixed through the first vertical telescopic unit, and the four pile top platforms and the pile top track are relatively fixed through the second vertical telescopic unit, the second vertical telescopic unit on the pile top platform at the top of the remaining pile foundation is in a retracted state, and the pile top platform and the pile top track can relatively slide.

[0034] If the pile foundation is deviated in the length direction of the wharf, the pile top platform on any pile foundation pair in the pile foundation pair is relatively fixed with the pile top track through the second vertical telescopic unit, the second vertical telescopic unit on the pile top platform at the top of the remaining pile foundation is in a retracted state, and the pile top platform and the pile top track can relatively slide, and the pile top platform fixed with the pile top track pushes the pile top track and the upper operation mechanism forward through the three-way jack thereon until the pile top track moves the pile top platform along the pile top track to a set position along with the upper operation mechanism in the length direction of the wharf,

[0035] If the pile foundation is deviated in the width direction of the wharf, the whole composed of the three-way jack, the base and the first driving mechanism is driven to move along the through groove to a set deviation position;

[0036] S2: work is performed in the first work area by using the upper work mechanism;

[0037] S3: when the work in the first work area is completed, the pile top platform on any pile foundation pair is fixed to the pile top rail through the second vertical telescopic unit, the second vertical telescopic unit on the pile top platform of the rest of the pile top is in a retracted state, and the pile top platform fixed to the pile top rail pushes the pile top rail and the upper work mechanism forward by using the three-way jack thereon until the pile top rail with the upper work mechanism moves slowly forward along the length direction of the wharf to the second work area between the second pile foundation pair and the third pile foundation pair, at this time, the four pile top platforms in the second work area are respectively limited and fixed between the four pile foundations through the first vertical telescopic unit, and work is performed in the second work area by using the upper work mechanism;

[0038] When there is no pile top platform in front of the pile foundation, the pile top platform on the top of the rear pile foundation pair is fixed to the pile foundation, and the two pile top platforms on the top of the front row of pile foundations are arranged side by side and fixed to the pile top rail, and the pile top platform on the top of the rear pile foundation pair is slowly pushed and moved forward until the frontmost pile top platform crosses the pile foundation.

[0039] S4: the above steps are sequentially repeated until the work in the work area between the pile foundation pairs is completed.

[0040] The present application at least has the following beneficial effects:

[0041] Firstly, the pile top platform of the present application adjusts the deviation of the pile foundation in the length direction of the wharf by moving along the pile top rail, adjusts the deviation of the pile foundation in the width direction of the wharf by moving along the through groove at the bottom of the rigid top plate, and fixes the pile foundation by using the base and the first vertical telescopic unit in the pile top platform, thereby solving the problem of pile foundation deviation.

[0042] Secondly, the pile top rail of the present application has a simple structure, and by combining with the rigid top plate of the pile top platform, the load of the upper work mechanism is more evenly distributed on the rigid top plate and then transmitted to the pile foundation, and the rigid top plate can be moved and adjusted in position and can support the top of the combination inclined pile such as the fork pile and the three-pile.

[0043] Third, the present application combines the pile top platform and the pile top rail structure, has the functions of jacking and moving, and the device is simple and convenient to cross, the pile top rail is crossed by three-way jacks, the pile top platform can move along the length direction and the width direction of the pile top rail at the bottom of the pile top rail to adapt to the pile foundation deviation, and the pile top platform is connected with or supported by the pile foundation through the internal first vertical telescopic unit.

[0044] Fourth, the riprapping operation mechanism of the present application is simple in structure, the hopper can move in the width direction of the wharf along the beam, the material is taken, the bottom connected duct is used for feeding, the tool can be replaced to slope, and full coverage operation of the wharf width can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 It is a schematic view of the connection structure of the first vertical telescopic unit in the pile top platform of the present application with the pile foundation in a retracted state;

[0046] Figure 2 It is a schematic view of the connection structure of the first vertical telescopic unit in the pile top platform of the present application with the pile foundation when the first vertical telescopic unit is inserted into the pile foundation

[0047] Figure 3 It is a schematic view of the arrangement of the pile top platform and the pile top rail in the case of single pile deviation;

[0048] Figure 4 It is a schematic view of the arrangement of the pile top platform and the pile top rail in the case of double pile deviation;

[0049] Figure 5 It is a construction section view of the present application;

[0050] Figure 6 It is a construction plan view of the present application;

[0051] Figure 7 It is an elevation view of the device of the present application;

[0052] Figure 8 It is a construction schematic view of the upper operation mechanism of the present application when operating in the second operation area;

[0053] Figure 9 It is a schematic view when moving from the second operation area to the third operation area;

[0054] Figure 10 It is a construction schematic view when the pile top rail is pushed to the front pile foundation without the pile top platform of the present application;

[0055] Figure 11 It is a construction schematic view when two pile top platforms are arranged side by side to cross the pile foundation;

[0056] Figure 12 It is a construction schematic view of the upper operation mechanism of the present application when operating in the third operation area;

[0057] Figure 13 Figure 1 is a front view of the rigid top plate and pile top rail connection of the present application;

[0058] Figure 14 Figure 2 is a side view of the rigid top plate and pile top rail connection of the present application;

[0059] The figure shows: 1-pile foundation, 2-pile top platform, 201-base, 202-first vertical telescopic unit, 203-three-way jack, 203-1-vertical jacking shaft of three-way jack, 203-2-wheel hub motor, 204-rigid top plate, 205-through slot, 3-pile top rail, 4-stand column, 5-cross beam, 6-moving hopper. DETAILED DESCRIPTION

[0060] The present application will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement the present application according to the description.

[0061] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial channels unless otherwise specified; in the description of the present application, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0062] The present application provides a high-pile wharf protection work platform suitable for inclined straight piles, which is composed of a pile top platform, a pile top rail and an upper work mechanism. The pile top platform comprises a rigid top plate, a three-way jack and a base, wherein the base is internally provided with a first vertical telescopic unit, which can be inserted into the pile foundation to a certain distance downward, so as to realize horizontal limiting between the pile top platform and the pile foundation;

[0063] The pile top rail is internally provided with a horizontal sliding groove, and the horizontal sliding groove is internally provided with a sliding assembly, which can slide in the length direction of the pile top rail in the horizontal sliding groove of the pile top rail. The horizontal sliding assembly comprises:

[0064] A sliding support part, comprising an upper support roller group and a lower support roller group, the upper support roller group is installed at the top of the horizontal sliding groove, and the lower support roller group is installed at the bottom of the horizontal sliding groove, the upper support roller group and the lower support roller group are arranged in parallel;

[0065] A rigid top plate is arranged between the upper support roller set and the lower support roller set;

[0066] A second vertical telescopic unit is arranged on the pile top track and can be telescoped towards the rigid top plate to fix the rigid top plate and the pile top track;

[0067] The vertical supporting shaft of the three-way jack is connected with the rigid top plate, and the pile top platform composed of the three-way jack and the base can be relatively fixed with the pile top track in the horizontal sliding groove or under the action of the second vertical telescopic unit;

[0068] When the pile top platform is above the pile foundation, the first vertical telescopic unit inside the pile top platform extends into the pile foundation to form an integral whole with the pile foundation, so that the pile top platform and the pile foundation are horizontally limited;

[0069] A first driving mechanism is mounted on the rigid top plate, the rigid top plate is provided with a through slot arranged along the width direction of the pile top track, the vertical supporting shaft of the three-way jack passes through the through slot and is connected with the first driving mechanism, and the first driving mechanism is used to drive the pile top platform composed of the three-way jack and the base to move in the through slot along the width direction of the pile top track to correspond to the deviated pile foundation;

[0070] An upper operation mechanism is arranged on the upper part of the pile top track and is fixedly connected with the pile top track and is used for rock throwing operation.

[0071] As a preferred technical scheme of the operation platform, the first vertical telescopic unit and the second vertical telescopic unit are gas cylinders or hydraulic cylinders.

[0072] As a preferred technical scheme of the operation platform, the first driving mechanism is a hub motor, and the supporting shaft of the three-way jack passes through the through slot and is suspended on the rigid top plate through the hub motor.

[0073] The upper operation mechanism of the present application is a rock throwing operation mechanism, which comprises:

[0074] A stand is fixedly supported at the bottom of the pile top track;

[0075] A cross beam is connected between the top parts of the stands between two adjacent pile top tracks in the width direction of the wharf;

[0076] A movable hopper is arranged on the cross beam and can move on the cross beam in the width direction of the wharf.

[0077] Preferably, the bottom of the movable hopper is provided with a length-adjustable guide pipe.

[0078] A kind of operation method of high-pile wharf protection operation platform based on the inclined straight pile of the present application, along the width direction of wharf, at least one pair of pile foundation is arranged between two pile top tracks and mutually parallel, along the length direction of wharf, several pile foundations are provided, respectively first pile foundation, second pile foundation, third pile foundation and the Nth pile foundation are sequentially arranged along the length direction of wharf, N is positive integer;

[0079] Including the following steps:

[0080] S1: if pile foundation is not deflected, the area between first pile foundation and second pile foundation is used as first operation area, the top of 4 pile foundations in the first operation area is respectively installed one pile top platform, 4 pile top platforms and 4 pile foundations are respectively fixed by the first vertical telescopic unit, and 4 pile top platforms and pile top track are relatively fixed by the second vertical telescopic unit, the second vertical telescopic unit on the pile top platform of the rest of pile top is in the state of being retracted, and the pile top platform and the pile top track can relatively slide;Work in the first operation area using upper operation mechanism;

[0081] If pile foundation is deflected,

[0082] In the length direction of wharf, the pile top platform on any pile foundation in the pile foundation is relatively fixed with the pile top track by the second vertical telescopic unit, the second vertical telescopic unit on the pile top platform of the rest of pile top is in the state of being retracted, and the pile top platform and the pile top track can relatively slide, the pile top platform fixed with the pile top track is pushed forward to the pile top track and upper operation mechanism using the three-way jack thereon until the pile top track moves the whole pile top platform along the pile top track to the set position along the length direction of wharf with the upper operation mechanism,

[0083] In the width direction of wharf, the whole formed by the three-way jack, base driven by the first driving mechanism moves along the through slot to the set deflection position;

[0084] S2: when the first operation area work is finished, the pile top platform on any pile foundation in the pile foundation is relatively fixed with the pile top track by the second vertical telescopic unit, the second vertical telescopic unit on the pile top platform of the rest of pile top is in the state of being retracted, and the pile top platform and the pile top track can relatively slide, the pile top platform fixed with the pile top track is pushed forward to the pile top track and upper operation mechanism using the three-way jack thereon until the pile top track moves slowly to the second operation area between second pile foundation and third pile foundation along the length direction of wharf with the upper operation mechanism, at this time, 4 pile top platforms in the second operation area and 4 pile foundations are respectively fixed by the first vertical telescopic unit, work in the second operation area using upper operation mechanism;

[0085] S3: Continue in this manner until all work is completed in the work area between the pile foundation pairs.

[0086] The following describes in detail, with reference to the accompanying drawings, a construction method for pile top support and bank slope protection of a pile foundation wharf adapted to inclined and straight piles, according to the present invention. Figures 6-12 As shown, the specific steps include the following:

[0087] S1: Assemble the equipment, limit and fix the four pile top platforms of pile foundations No. 2 and No. 3 to the corresponding pile foundations, and slide the remaining pile top platforms to the pile top tracks. The specific fixation measure for the pile top platforms is to insert the first vertical expansion unit inside the pile top platform downward into the steel pipe pile a certain distance.

[0088] like Figure 3 As shown, in the case of single pile misalignment, the three-way jacks and base inside the pile top platform can move along the through slot of the rigid top plate. Similarly, in the case of fork pile misalignment, the rigid top plate remains fixed, and the three-way jacks and base move along the width direction of the pile top track in the through slot of the rigid top plate under the drive of the hub motor, adjust to the position corresponding to the bottom pile foundation, and then limit and fix with the pile foundation.

[0089] S2: As Figure 6 As shown, the hopper filled with sand and gravel is used to throw stones to protect the area between piles through the guide pipe. After the protection thickness reaches the design value, the hopper moves along the crossbeam to ensure full coverage of the construction in the width direction of the wharf.

[0090] S3: Main unit crosses the span: The pile top platform fixed to the pile foundation pushes the pile top track and upper mechanism forward. The pile top platforms placed on frames ③ and ④ are fixed to the pile foundation. The pile top platform of frame ② retracts the first vertical telescopic unit and rests on the top surface of the pile foundation. The remaining pile top platforms can slide along the bottom of the pile top track. The main unit slowly crosses the span forward.

[0091] S4: As Figure 10 As shown, the pile top platforms of frames ② and ④ are fixed to the pile foundations in the same way, while the remaining pile top platforms slide along the bottom of the pile top track. The main unit crosses from the pile foundations of frames ② and ③ to the pile foundations of frames ③ and ④.

[0092] S5: As Figures 10-11 As shown, when the jacking reaches the point where there is no pile top platform in front of the pile foundation, the pile top platform at the top of the pile foundation of frame ③ is fixed to the pile foundation, and the two pile top platforms at the top of the pile foundation of frame ④ are side by side and close together, both fixed to the pile top track. The pile top platform at the top of the pile foundation of frame ③ is slowly jacked, and the whole structure moves forward until the pile top platform crosses the pile foundation of frame ④.

[0093] S6: Return to step S1 and repeat steps S1 to S5 to move forward.

[0094] While embodiments of the application have been disclosed in connection with the above specification and drawings this description is not intended to limit the scope of the application and many modifications, enhancements, alternatives, and variations will become apparent to those skilled in the art from this disclosure. Accordingly, it is intended that the application not be limited to the described embodiments, but that it include all variations falling within the scope of the claims, and their equivalents.

Claims

1. A high-pile wharf protection work platform suitable for inclined straight piles, comprising: a plurality of pile top platforms arranged at the top of pile foundations; at least two pile top tracks arranged along the length direction of the wharf, the pile top tracks being installed on the top of a plurality of pile foundations in the pile row in the length direction of the wharf through the pile top platforms, and adjacent pile top tracks being arranged in the width direction of the wharf; characterized in that each of the pile top platforms comprises: a base supported on the pile top, the base being internally provided with a first vertical telescopic unit, the first vertical telescopic unit being capable of being extended downward and inserted into the pile foundation by a certain distance to achieve horizontal limiting between the pile top platform and the pile foundation; a three-way jack installed on the base; the pile top track is internally provided with a horizontal sliding groove, the horizontal sliding groove is internally provided with a sliding assembly, the sliding assembly is capable of sliding in the length direction of the pile top track in the horizontal sliding groove of the pile top track, and the horizontal sliding assembly comprises: a sliding support component comprising an upper support roller group and a lower support roller group, the upper support roller group being installed on the top of the horizontal sliding groove, the lower support roller group being installed on the bottom of the horizontal sliding groove, and the upper support roller group and the lower support roller group being arranged in parallel; a rigid top plate clamped between the upper support roller group and the lower support roller group; a second vertical telescopic unit arranged on the pile top track, the second vertical telescopic unit being capable of being telescoped toward the rigid top plate to fix the rigid top plate and the pile top track; a vertical jacking shaft of the three-way jack being connected with the rigid top plate, and the pile top platform composed of the three-way jack and the base being capable of moving in the horizontal sliding groove relative to the pile top track or being relatively fixed with the pile top track under the action of the second vertical telescopic unit; a first driving mechanism installed on the rigid top plate, the rigid top plate being provided with a through groove arranged in the width direction of the pile top track, a vertical jacking shaft of the three-way jack passing through the through groove and being connected with the first driving mechanism, and the first driving mechanism being used to drive the pile top platform composed of the three-way jack and the base to move in the through groove in the width direction of the pile top track to correspond to the offset pile foundation; an upper work mechanism arranged on the upper portion of the pile top track and fixedly connected with the pile top track, and used for rock throwing work; the pile top platform adjusting the offset of the pile foundation in the length direction of the wharf by moving along the pile top track and adjusting the offset of the pile foundation in the width direction of the wharf by moving along the through groove at the bottom of the rigid top plate.

2. The piled wharf protection work platform adapted to batter pile according to claim 1, characterized in that, The first vertical telescopic unit and the second vertical telescopic unit adopt air cylinders or hydraulic cylinders.

3. The piled wharf protection work platform adapted to batter pile according to claim 1, characterized in that, The first driving mechanism is a hub motor, and the jacking shaft of the three-way jack is suspended and supported on the rigid top plate through the hub motor after passing through the through groove.

4. The piled wharf protection work platform for batter pile according to claim 1, wherein, The upper work mechanism is a rock throwing work mechanism, comprising: a stand column fixedly supported at the top of the pile top track; a cross beam connected between the top portions of the stand columns between adjacent two pile top tracks in the width direction of the wharf; a movable hopper arranged on the cross beam and capable of moving on the cross beam in the width direction of the wharf.

5. The piled wharf protection work platform adapted to batter piles according to claim 4, wherein, The bottom of the movable hopper is provided with a length-adjustable guide pipe.

6. A method for protecting a work platform of a high-pile wharf based on the inclined straight pile according to any one of claims 1-5, In the direction of the width of the wharf, at least one pair of pile foundations is arranged between the two pile top tracks in parallel with each other, and in the direction of the length of the wharf, a plurality of pile foundation pairs are arranged, which are respectively a first pile foundation pair, a second pile foundation pair, a third pile foundation pair, and an Nth pile foundation pair arranged in sequence in the direction of the length of the wharf, N being a positive integer; characterized in that The method comprises the following steps: S1: If the pile foundation is not deviated, the area between the first pile foundation pair and the second pile foundation pair is used as a first work area, four pile top platforms are respectively installed on the top portions of the four pile foundations in the first work area, the four pile top platforms and the four pile foundations are respectively limited and fixed by the first vertical telescopic units, and the four pile top platforms and the pile top track are relatively fixed by the second vertical telescopic units, the second vertical telescopic units on the pile top platforms on the top portions of the remaining pile foundations are in a retracted state, and the pile top platforms and the pile top track can relatively slide; the upper work mechanism is used to work in the first work area; If the pile foundation is deviated in the direction of the length of the wharf, the pile top platforms on any pile foundation pair are relatively fixed with the pile top track by the second vertical telescopic units, the second vertical telescopic units on the pile top platforms on the top portions of the remaining pile foundations are in a retracted state, and the pile top platforms and the pile top track can relatively slide, the pile top platforms fixed with the pile top track are used to push the pile top track and the upper work mechanism forward by the three-way jacks thereon until the pile top track moves the pile top platforms as a whole along the pile top track to a set position along with the upper work mechanism in the direction of the length of the wharf, If the pile foundation is deviated in the direction of the width of the wharf, the whole composed of the three-way jacks and the base is driven to move along the through slot on the rigid top plate to a set deviated position by the first driving mechanism; S2: After the work in the first work area is completed, the pile top platforms on any pile foundation pair are relatively fixed with the pile top track by the second vertical telescopic units, the second vertical telescopic units on the pile top platforms on the top portions of the remaining pile foundations are in a retracted state, the pile top platforms fixed with the pile top track are used to push the pile top track and the upper work mechanism forward by the three-way jacks thereon until the pile top track slowly moves to a second work area between the second pile foundation pair and the third pile foundation pair along with the upper work mechanism in the direction of the length of the wharf, at this time, the four pile top platforms in the second work area are respectively limited and fixed by the first vertical telescopic units, and the upper work mechanism is used to work in the second work area; When there is no pile top platform in front of the pile foundation, the pile top platforms on the top portions of the pile foundation pairs in the rear are fixed with the pile foundations, the two pile top platforms on the top portions of the pile foundations of the front row of frames are arranged in parallel, and both are fixed with the pile top track, the pile top platforms on the top portions of the pile foundation pairs in the rear are slowly pushed and moved forward as a whole until the frontmost pile top platform crosses the pile foundation; S3: The above steps are sequentially repeated until the work in the work area between the pile foundation pairs is completed.

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