A steel sheet pile reverse pressure type sinking method suitable for limited construction space

Abstract

The application discloses a steel sheet pile reverse pressure type sinking pile method suitable for limited construction space, and belongs to the field of construction technology. The method comprises the following steps: setting a guide beam on each side of the axis of the steel sheet pile sinking position, and setting a plurality of guide piles on the length direction outside the guide beam; connecting and inserting the steel sheet pile to be sunk into the space formed between the two guide beams; pushing the hanger to the sinking pile section for assembly, and installing the assembled hanger on the top of the adjacent four guide piles forming a rectangle corresponding to the sinking pile section; making the steel sheet pile clamp bite the steel sheet pile to be sunk; sinking the pile in sections; making the steel sheet pile clamp separate from the steel sheet pile which has been sunk; adjusting the position of the cross beam to the steel sheet pile to be sunk above, and preparing for the next sinking pile; and moving the hanger to the next sinking pile section when the sinking of the steel sheet pile in the sinking pile section is completed. The method is simple and convenient to operate; the sinking of the steel sheet pile can be realized by setting the guide beam, the guide pile and the hanger.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel sheet pile construction, and particularly relates to a steel sheet pile reverse pressure type pile sinking method suitable for limited construction space. BACKGROUND

[0002] The steel sheet pile is a commonly used soil or water retaining structure, and generally, the pile sinking of the steel sheet pile is performed by using a hammering method or a vibrating method in cooperation with a large crane and other mechanical equipment to hoist a hammer body for construction. However, when the construction site space is limited or the foundation bearing capacity is insufficient, the large hoisting equipment cannot be used for construction, and the conventional method cannot be implemented. Therefore, special construction equipment has to be developed, which greatly increases the construction cost. SUMMARY

[0003] The present application aims at providing a steel sheet pile reverse pressure type pile sinking method suitable for limited construction space according to the deficiencies of the prior art, and the pile sinking of the steel sheet pile can be realized by arranging guide beams, guide piles and hangers.

[0004] The present application is achieved by the following technical scheme:

[0005] A steel sheet pile reverse pressure type pile sinking method suitable for limited construction space, characterized in that the pile sinking method comprises the following steps:

[0006] (S1) One guide beam is arranged on each side of the axis of the steel sheet pile pile sinking position, and a plurality of guide piles are arranged at intervals in the length direction outside the guide beams, and the steel sheet piles to be sunk are sequentially connected and inserted into the space formed between the two guide beams;

[0007] The guide piles are fixedly connected with the guide beams.

[0008] (S2) The hanger is pushed to the pile sinking section for assembly, and the assembled hanger is installed on the top of the adjacent four guide piles constituting a rectangle corresponding to the pile sinking section;

[0009] The hanger comprises two movable beams, four hydraulic telescopic columns, two longitudinal beams, one cross beam and one steel sheet pile clamp, the two movable beams are oppositely arranged and move in the vertical direction, the fixed ends of the four hydraulic telescopic columns are respectively arranged in pairs at the bottom of the two movable beams, the two longitudinal beams are respectively located directly above the two guide beams, the two ends of each longitudinal beam are respectively connected with the telescopic ends of the corresponding two hydraulic telescopic columns, the two ends of the cross beam are movably connected with the two longitudinal beams, the cross beam moves along the length direction of the longitudinal beam, the steel sheet pile clamp is movably connected with the lower part of the cross beam, the steel sheet pile clamp moves along the length direction of the cross beam, and the steel sheet pile clamp is used for clamping and vibrating the steel sheet pile.

[0010] (S3) Adjusting the hydraulic telescopic columns to be in retracted state, lifting the moving beam to a certain height, adjusting the cross beam to be above the steel sheet pile to be driven, adjusting the position of the steel sheet pile clamp on the cross beam so that the clamping opening of the steel sheet pile clamp is aligned with the web of the steel sheet pile to be driven, simultaneously extending the four hydraulic telescopic columns at the same speed, inserting the web of the steel sheet pile to be driven into the clamping opening of the steel sheet pile clamp, closing the clamping opening of the steel sheet pile clamp, and clamping the steel sheet pile to be driven by the steel sheet pile clamp;

[0011] (S4) Carrying out segmented driving: when the hydraulic telescopic columns are extended to a specified length, lowering the moving beam while retracting the hydraulic telescopic columns, and walking downward as a whole; after the retraction is completed, the moving beam is kept stationary, and the hydraulic telescopic columns are extended to carry out the next segment of driving;

[0012] (S5) After the driving to a specified elevation is completed, releasing the clamping opening of the steel sheet pile clamp, lifting the moving beam, and separating the steel sheet pile clamp from the driven steel sheet pile; adjusting the position of the cross beam to be above the steel sheet pile to be driven next, and preparing for the next driving; after the driving of the steel sheet piles in the segment is completed, moving the lifting frame to the next driving segment.

[0013] The lifting frame further comprises four lower structures, two upper structures, and four screw columns; the four lower structures are respectively bolted to the top ends of the adjacent four guide piles forming a rectangle; the bottom ends of the screw columns are rotatably connected to the corresponding lower structures, and the top ends of the screw columns are rotatably connected to one end of the corresponding upper structures; the two ends of the moving beam are respectively rotatably connected to the corresponding two screw columns; and the screw columns are rotated to make the moving beam move up and down on the screw columns.

[0014] Two guide rods are arranged outside each screw column; the bottom ends of the guide rods are fixed to the lower structures, and the top ends of the guide rods are fixed to the upper structures; and the moving beam is connected to the guide rods through a sleeve.

[0015] The upper structures and the moving beam are connected through longitudinal beams.

[0016] A laser ranging sensor is arranged at each end of the longitudinal beam; and the guide beam is provided with a positioning measurement plate corresponding to the laser ranging sensor at the top thereof.

[0017] The cross beam is movably connected to the two longitudinal beams through the inverted U-shaped members at the two ends thereof.

[0018] The method is simple and convenient to operate; the guide beam, the guide pile, and the lifting frame are arranged to realize the driving of the steel sheet pile. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 This is a construction schematic diagram (I) of the present invention;

[0020] Fig. 2 This is a construction schematic diagram (II) of the present invention. Implementation

[0021] The features and other related features of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate understanding by those skilled in the art:

[0022] like Figs. 1-2 As shown in the figure, the markings represent: guide beam 1, guide pile 2, lower structure 3, upper structure 4, screw column 5, moving beam 6, hydraulic telescopic column 7, longitudinal beam 8, cross beam 9, sheet pile clamp 10, laser rangefinder sensor 11, positioning measuring plate 12, inverted U-shaped part 13, guide rod 14, sleeve 15, longitudinal rod 16, and sheet pile 17.

[0023] Example: Figs. 1-2 As shown, this embodiment relates to a sheet pile counter-pressure pile driving method suitable for limited construction space, the pile driving method including the following steps:

[0024] A guide beam 1 is set on each side of the axis of the steel sheet pile driving position, and several guide piles 2 are set at intervals along the length direction outside the guide beam 1.

[0025] Among them, the guide pile 2 is fixedly connected to the guide beam 1, and both the guide beam 1 and the guide pile 2 are made of I-beams.

[0026] 2. Connect the sheet piles 17 to be driven in sequence and insert them into the space formed between the two guide beams 1. This space is used to install the sheet piles 17 (U-shaped sheet piles in this embodiment). It can guide and position the sheet piles 17 to ensure that the sheet piles 17 are installed in the preset position, which can effectively reduce the installation deviation.

[0027] 3. Push the gantry to the pile driving section for assembly, and install the assembled gantry on the top of the four adjacent guide piles 2 that form the rectangle corresponding to the pile driving section.

[0028] The hanger comprises four lower structures 3, two upper structures 4, four screw columns 5 and two moving beams 6. The upper structures 4 and the moving beams 6 are arranged transversely. The upper structures 4 and the moving beams 6 are connected by longitudinal rods 16, which play a reinforcing role and strengthen the integrity of the device. The four lower structures 3 are bolted to the top ends of the adjacent four guide piles 2 forming a rectangle, which facilitates disassembly. The bottom end of the screw column 5 is rotatably connected to the corresponding lower structure 3, and the top end is rotatably connected to one end of the corresponding upper structure 4. The two ends of the moving beam 6 are rotatably connected to the corresponding two screw columns 5. The rotation of the screw column 5 makes the moving beam 6 move up and down on the screw column 5. The height of the moving beam 6 on the screw column 5 is adjusted to adapt to steel sheet piles 17 of different heights. Two guide rods 14 are arranged on the outer side of each screw column 5. The bottom end of the guide rod 14 is fixed to the lower structure 3, and the top end is fixed to the upper structure 4. The moving beam 6 is connected to the guide rod 14 through a sleeve 15. The sleeve 15 is sleeved on the guide rod 14 and can move along the length direction of the guide rod 14, which plays a guiding role and can improve the moving stability of the moving beam 6.

[0029] The moving beam 6 is connected with the vibrating pile sinking device, the vibrating pile sinking device comprises four hydraulic telescopic columns 7, two longitudinal beams 8, a cross beam 9 and a steel sheet pile clamp 10, the fixed ends of the four hydraulic telescopic columns 7 are arranged at the bottom (two ends) of the two moving beams 6 respectively in pairs, the two longitudinal beams 8 are located directly above the two guide beams 1 respectively, the two ends of each longitudinal beam 8 are connected with the telescopic ends of the corresponding two hydraulic telescopic columns 7 respectively, the hydraulic telescopic columns 7 drive the longitudinal beams 8 to move up and down, for adjusting the vertical position of the steel sheet pile clamp 10, so as to clamp the steel sheet pile 17. The two ends of the cross beam 9 are movably connected with the two longitudinal beams 8 respectively, in the embodiment, the two ends of the cross beam 9 are each provided with a reverse U-shaped piece 13, the cross beam 9 is movably connected with the two longitudinal beams 8 through the reverse U-shaped pieces 13 at the two ends, the cross beam 9 moves along the length direction of the longitudinal beam 8, for adjusting the longitudinal position of the steel sheet pile clamp 10, so as to clamp the steel sheet pile 17. The steel sheet pile clamp 10 is movably connected with the lower part of the cross beam 9, the steel sheet pile clamp 10 moves along the length direction of the cross beam 9, for adjusting the transverse position of the steel sheet pile clamp 10, so as to clamp the steel sheet pile 17. In addition to clamping the steel sheet pile 17, the steel sheet pile clamp 10 can also vibrate the steel sheet pile 17 through the vibration device thereon, so as to realize the pile sinking of the steel sheet pile 17. In addition, considering the asymmetric force in the pile sinking process, the force receiving components are prone to tilting, which causes the device to be unstable and the pile sinking effect to be poor, the two ends of each longitudinal beam 8 are provided with a laser ranging sensor 11, the guide beam 1 is provided with a positioning measurement plate 12 at the top, the number and position of the positioning measurement plate 12 correspond to the number and position of the laser ranging sensor 11, the laser ranging sensor 11 is provided with a laser emitter and a laser receiver, the laser emitter of the laser ranging sensor 11 emits laser to the positioning measurement plate 12, and the positioning measurement plate 12 reflects the laser to the laser receiver of the laser ranging sensor 11, so as to measure the height and inclination of the end of the longitudinal beam 8 in real time, and the moving beam 6 and the hydraulic telescopic column 7 are controlled correspondingly and accurately, for assisting in controlling the overall stability of the structure in the pile sinking process. In the pile sinking process, according to the position of the steel sheet pile 17, the position of the cross beam 9 and the steel sheet pile clamp 10 on the cross beam 9 is adjusted, the steel sheet pile 17 is clamped, the hydraulic telescopic column 7 is started, and then the steel sheet pile 17 is vibrated.

[0030] 4. The hydraulic telescopic column 7 is adjusted to be in the retracted state, the moving beam 6 is lifted to a certain height, the cross beam 9 is adjusted to be above the steel sheet pile 17 to be sunk, and the position of the steel sheet pile clamp 10 on the cross beam 9 is adjusted so that the clamping opening is aligned with the web of the steel sheet pile 17 to be sunk.

[0031] 5. After the device is assembled, the laser ranging sensor 11 is started, the positioning measurement plate 12 is placed at the corresponding position on the guide beam 1, the moving beam 6 and the hydraulic telescopic column 7 are adjusted, the laser emitted by the four laser ranging sensors 11 at the two ends of the longitudinal beam 8 is located inside the circle scale of the positioning measurement plate 12, the height is measured within the allowable error range, so as to ensure that the longitudinal beam 8 of the device is subjected to horizontal force.

[0032] 6. Extend the four hydraulic telescopic columns 7 at the same speed simultaneously, so that the web of the sheet pile 17 is inserted into the clamping jaws of the sheet pile clamp 10, close the clamping jaws, and make the sheet pile clamp 10 bite the sheet pile 17.

[0033] 7. Check the height and positioning of the laser rangefinder 11, reduce the extension speed of the hydraulic telescopic column 7, and start vibrating the pile driving at the same time. During this process, the hydraulic telescopic column 7 should always maintain a certain downward pressure to keep the height and positioning of the laser rangefinder 11 within the allowable error range.

[0034] 8. Perform segmented pile driving: When the hydraulic telescopic column 7 extends to the specified length, the moving beam 6 descends while the hydraulic telescopic column 7 retracts, and the two move downwards as a whole; after the retraction is completed, the moving beam 6 remains stationary, and the hydraulic telescopic column 7 extends to drive the next segment of the pile.

[0035] 9. After the pile is driven to the designated elevation, loosen the clamp of the sheet pile clamp 10, lift the moving beam 6, and detach the sheet pile clamp 10 from the sheet pile 17.

[0036] 10. Adjust the position of the crossbeam 9 to be directly above the next sheet pile 17 to be driven, in preparation for the next pile driving.

[0037] 11. After all the sheet piles 17 in this pile driving section have been driven, move the hoist to the next pile driving section.

[0038] The beneficial technical effects of this embodiment are: the method is simple and easy to operate; by setting guide beams, guide piles and hangers, the driving of steel sheet piles can be realized.

[0039] Although the above embodiments have described the concept and embodiments of the present invention in detail with reference to the accompanying drawings, those skilled in the art will recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, and therefore will not be elaborated here.

Claims

1. A steel sheet pile reverse pressure sinking method suitable for limited construction space, characterized by, The pile sinking method comprises the following steps: (S1) One guide beam is arranged on each side of the pile sinking position axis of the steel sheet pile, and a plurality of guide piles are arranged at intervals in the length direction outside the guide beams, and the steel sheet pile to be sunk is connected and inserted into the space formed between the two guide beams in sequence; Wherein, the guide piles are fixedly connected with the guide beams; (S2) The hanger is pushed to the pile sinking section for assembly, and the assembled hanger is installed on the top of the adjacent four guide piles constituting a rectangle corresponding to the pile sinking section; Wherein, the hanger comprises two moving beams, four hydraulic telescopic columns, two longitudinal beams, a cross beam and a steel sheet pile clamp, the two moving beams are oppositely arranged and move in the vertical direction, the fixed ends of the four hydraulic telescopic columns are respectively arranged in pairs at the bottom of the two moving beams, the two longitudinal beams are respectively located directly above the two guide beams, the ends of each longitudinal beam are respectively connected with the telescopic ends of the corresponding two hydraulic telescopic columns, the two ends of the cross beam are movably connected with the two longitudinal beams, the cross beam moves along the length direction of the longitudinal beam, the steel sheet pile clamp is movably connected with the lower part of the cross beam, and the steel sheet pile clamp moves along the length direction of the cross beam, and the steel sheet pile clamp is used for clamping and vibrating the steel sheet pile; (S3) The hydraulic telescopic columns are adjusted to be in the retracted state, the moving beams are lifted to a certain height, the cross beam is adjusted to be directly above the steel sheet pile to be sunk, the position of the steel sheet pile clamp on the cross beam is adjusted so that the clamping opening of the steel sheet pile clamp is aligned with the web of the steel sheet pile to be sunk, the four hydraulic telescopic columns are simultaneously elongated at the same speed, the web of the steel sheet pile to be sunk is inserted into the clamping opening of the steel sheet pile clamp, the clamping opening of the steel sheet pile clamp is closed, and the steel sheet pile clamp tightly bites the steel sheet pile to be sunk; (S4) The steel sheet pile is sunk in sections: when the hydraulic telescopic columns are elongated to a specified length, the moving beams are lowered and the hydraulic telescopic columns are simultaneously contracted, and the two move downward as a whole; after the contraction is completed, the moving beams remain stationary, the hydraulic telescopic columns are elongated, and the next section of the steel sheet pile is sunk; (S5) After the steel sheet pile is sunk to a specified elevation, the clamping opening of the steel sheet pile clamp is released, the moving beams are lifted, the steel sheet pile clamp is separated from the steel sheet pile which has been sunk, the position of the cross beam is adjusted to be directly above the next steel sheet pile to be sunk, and the next sinking is prepared; when the sinking of the steel sheet piles in the pile sinking section is completed, the hanger is moved to the next pile sinking section.

2. The steel sheet pile reverse pressure sinking method for limited construction space according to claim 1, wherein The hanger further comprises four lower structures, two upper structures and four screw columns, the four lower structures are respectively bolted to the top of the adjacent four guide piles constituting a rectangle, the bottom end of the screw column is rotatably connected with the corresponding lower structure, and the top end of the screw column is rotatably connected with the corresponding upper structure, the two ends of the moving beam are rotatably connected with the corresponding two screw columns, and the screw column rotates to make the moving beam move up and down on the screw column.

3. The steel sheet pile counter-pressure sinking method for limited construction space according to claim 2, wherein Two guide rods are arranged outside each of the screw columns, bottom ends of the guide rods are fixed with the lower structure, top ends of the guide rods are fixed with the upper structure, and the moving beam is connected with the guide rods through sleeves.

4. The steel sheet pile counter-pressure sinking method for limited construction space according to claim 2, wherein The upper structure and the moving beam are connected through longitudinal beams.

5. The steel sheet pile counter-pressure sinking method for limited construction space according to claim 1, wherein A laser ranging sensor is arranged at each end of the longitudinal beam, and the guide beam is provided with a positioning measurement plate corresponding to the laser ranging sensor at the top thereof.

6. The steel sheet pile counter-pressure sinking method for limited construction space according to claim 1, wherein The cross beam is movably connected with the two longitudinal beams through the inverted U-shaped members at the two ends thereof.

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