Construction method for driving pile into water based on mobile pile driving platform

Abstract

This invention discloses a construction method for underwater pile driving based on a mobile pile driving platform, comprising the following steps: S1, constructing an auxiliary platform, assembling the mobile pile driving platform on the auxiliary platform, setting up a track pile group on one side of the auxiliary platform, installing a pile delivery track on the track pile group, and installing a pile delivery trolley on the pile delivery track; S2, transporting a single steel pipe pile to the pile lifting range using the pile delivery trolley, lifting the steel pipe pile, and driving it into the corresponding pile gripper, wherein after the steel pipe pile is lifted, the pile delivery trolley returns to the starting point to continue the next pile driving operation; S3, repeating S2 until all steel pipe piles in the span are constructed by the mobile pile driving platform, and extending the pile delivery track; S4, driving the mobile pile driving platform forward one span, and repeating S2-S3 to carry out the pile driving construction of the next span of steel pipe piles; S5, repeating step S4 until all steel pipe piles are constructed. This invention has the beneficial effect of facilitating the transport of piles by relying on steel pipe piles to construct the pile delivery track.

Description

Technical Field

[0001] This invention relates to the field of underwater pile driving technology. More specifically, this invention relates to a construction method for underwater pile driving based on a mobile pile driving platform. Background Technology

[0002] In the construction of bridges, ports, and other water-based structures, the application of offshore steel pipe piles is widespread. However, offshore pile driving projects are often located in areas constantly affected by waves, especially when the waves are high, rapid, and large. Traditional methods using pile driving vessels with pile hammers present challenges in operation, including difficulties in ensuring pile driving accuracy. Chinese Patent No. CN107653858A, Publication Date: 2018-02-02, entitled "Floating Self-Elevating Movable Pile Driving Platform and its Construction Method," discloses a movable pile driving platform that uses pre-constructed steel pipe piles instead of the platform's outriggers. A jacking device provides the power for the platform's movement, enabling efficient steel pipe pile construction unaffected by harsh hydrological and geological conditions. However, it suffers from difficulties in transporting the steel pipe piles as the platform moves. Summary of the Invention

[0003] One object of the present invention is to solve at least the above-mentioned problems and to provide at least the advantages that will be described later.

[0004] Another objective of this invention is to provide a construction method for underwater pile driving based on a mobile pile driving platform. This method utilizes the mobile pile driving platform to drive the pile underwater while simultaneously constructing a pile delivery track using newly driven steel pipe piles to facilitate the transport of the piles.

[0005] To achieve these objectives and other advantages according to the present invention, a construction method for underwater pile driving based on a mobile piling platform is provided, comprising the following steps:

[0006] Includes the following steps:

[0007] S1. Construct an auxiliary platform, assemble a mobile piling platform on the auxiliary platform, set up a track pile group on one side of the auxiliary platform, install a pile delivery track on the track pile group, and install a pile delivery trolley on the pile delivery track.

[0008] S2. A single steel pipe pile is carried by a pile-carrying trolley and transported to the lifting range of the mobile pile-driving platform. The mobile pile-driving platform lifts the steel pipe pile and sends it into the corresponding pile gripper for driving. After the steel pipe pile is lifted, the pile-carrying trolley returns to the starting point to continue the next pile-carrying operation.

[0009] S3. Repeat S2 until all steel pipe piles in the span are constructed on the mobile piling platform, and then extend and install the pile delivery track.

[0010] S4. Drive the mobile piling platform forward one span, and repeat S2-S3 to carry out the piling construction of the steel pipe piles for the next span.

[0011] S5. Repeat step S4 until all steel pipe piles are constructed.

[0012] Preferably, the auxiliary platform includes 5 rows of platform piles, which are spaced apart along the moving direction of the mobile piling platform, and each row includes 3 auxiliary piles spaced apart.

[0013] The track pile group, which is set up in parallel with the auxiliary platform, includes five track piles spaced apart, and the five track piles are set up in the same row as the five rows of platform piles.

[0014] Preferably, installing the pile driving track on the track pile group includes the following steps:

[0015] A1. Install steel caps on each track pile and install a pedestrian walkway on one side of the track pile group;

[0016] A2. Install track beams at the top of steel pile caps along the length of the track pile group, wherein the track beams include two rows arranged side by side along the width of the track pile group, and each row of track beams includes multiple detachably connected I-beams;

[0017] A3. Install rails at the top of each track beam. A pair of rails constitutes the pile driving rail, wherein each rail includes multiple detachably connected support rails.

[0018] The joints between adjacent I-beams and the joints between adjacent support rails are staggered.

[0019] Preferably, the joints of adjacent I-beams are located in the middle of two adjacent track piles, and the joints of adjacent support tracks are located above the steel pile caps.

[0020] Preferably, the ends of adjacent I-beams are detachably connected via an I-beam connector, the I-beam connector comprising:

[0021] The H-beam head is connected to the end of an adjacent H-beam, and both ends are respectively matched with the corresponding ends of the H-beam. The H-beam head includes a bottom plate, a vertical plate, and a top plate from bottom to top. The ends of the bottom plate and the top plate are provided with connecting blocks, and the ends of the H-beams corresponding to the H-beam head are provided with connecting grooves that match the connecting blocks.

[0022] A pair of clamping plates are set on both sides of the vertical plate to form a pair of clamping parts. The pair of clamping parts are respectively connected and clamped to the middle plate of the I-beam at both ends, and fixed by bolts.

[0023] Preferably, adjacent branch rails are detachably connected via a branch rail connector, the branch rail connector comprising:

[0024] The track head is connected to the end of the adjacent support track, and both ends are respectively matched with the end of the corresponding support track. The track head includes a track plate, a connecting plate, and a base from bottom to top. The ends of the track plate and the base are provided with inserts, and the ends of the support tracks corresponding to the track head are provided with slots that match the inserts.

[0025] A pair of pressure plates are respectively located on both sides of the connecting plate to form a pair of clamping grooves to clamp and fix the base located at both ends of the support rail connector. The pair of pressure plates extend to press onto the top of the rail beam and are fixed to the rail beam by bolts.

[0026] Preferably, the steel pipe piles constructed in each span include two track piles of the extended track pile group. After all the steel pipe piles in a span are constructed, a pile-driving track is extended based on the two track piles of the extended track pile group.

[0027] Preferably, the pile-driving trolley includes a pair of electric flatcars spaced apart, the two electric flatcars being fixedly connected, wherein a receiving block with an arc-shaped groove is fixedly connected to the top of each electric flatcar for limiting the bearing of the steel pipe pile.

[0028] Preferably, the steel pile cap is an outer sleeve type, comprising a cylindrical pile sleeve and a pile plate disposed at the top of the pile sleeve.

[0029] The present invention has at least the following beneficial effects:

[0030] Based on the mobile piling platform, while driving underwater piles, a pile delivery track is constructed using newly driven steel pipe piles for convenient transport. The pile delivery track includes staggered track beams and tracks, equipped with I-beam connectors and support track connectors to allow for detachable installation of the track beams and tracks while ensuring the overall stability of the pile delivery track. This also facilitates the forward extension of the pile delivery track in conjunction with the mobile piling platform. Furthermore, the I-beam connector includes an I-beam head and a clamping plate, and the support track connector includes a track plate and a pressure plate, enabling long-distance and short-distance positioning of the two connecting ends, improving the stability of the positioning connection.

[0031] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the launching platform according to one of the technical solutions of the present invention;

[0033] Figure 2 This is a diagram showing the mobile piling platform and pile location layout according to one of the technical solutions of the present invention;

[0034] Figure 3This is a schematic diagram of the pile-feeding track and pile-feeding trolley according to one of the technical solutions of the present invention;

[0035] Figure 4 This is a schematic diagram of the pile-feeding track and pile-feeding trolley according to one of the technical solutions of the present invention;

[0036] Figure 5 This is a schematic diagram of the track beam according to one of the technical solutions of the present invention;

[0037] Figure 6 This is a schematic diagram of the track structure according to one of the technical solutions of the present invention.

[0038] The attached diagram is labeled as follows: 1. Starting platform; 10. Auxiliary platform; 11. Platform pile; 12. Track pile group; 13. Track pile; 2. Pedestrian walkway; 20. Pedestrian trolley; 30. Electric flatcar; 31. Receiving block; 4. Mobile piling platform; 5. Steel pile cap; 50. Pile sleeve; 51. Pile plate; 6. Track beam; 60. I-beam; 7. I-beam connector; 70. I-beam head; 71. Base plate; 72. Vertical plate; 73. Top plate; 74. Connecting block; 75. Connecting groove; 76. Clamping plate; 77. Track; 8. Support track; 80. Support track connector; 9. Track plate; 90. Connecting plate; 91. Insert block; 92. Slot; 93. Pressure plate; 94. Clamping groove; 95. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to embodiments, so that those skilled in the art can implement it based on the description.

[0040] like Figure 1-6 As shown, the construction method for underwater pile driving based on a mobile piling platform includes the following steps:

[0041] I. Construction of Starting Platform 1

[0042] like Figure 1 As shown, the launching platform 1 includes an auxiliary platform 10, a group of track piles 12 set on one side of the auxiliary platform 10, a pile-feeding track 2 installed on the track pile group 12, and a pile-feeding trolley 3 installed on the pile-feeding track 2.

[0043] The auxiliary platform 10 is used to provide auxiliary support for the initial movement of the mobile piling platform 4. The auxiliary platform 10 can be configured to include 5 rows of platform piles 11, which are spaced apart along the movement direction of the mobile piling platform 4. Each row of platform piles 11 includes 3 auxiliary piles spaced apart. That is, the platform piles 11 of the auxiliary platform 10 form 5 rows and 3 columns. In one specific scheme, the auxiliary piles can be 1016 mm × 18 mm steel pipe piles. The distance between two adjacent rows of steel pipe piles can be 9 m, and the distance between two adjacent steel pipe piles in the same row can be 8.75 m.

[0044] The track pile group 12 is arranged side by side with the auxiliary platform 10 and located on one side of the auxiliary platform 10. Specifically, it may include 5 track piles 13 spaced apart along the moving direction of the mobile pile driving platform 4. The 5 track piles 13 include the initial 3 2.0 m * 2.0 m * 0.8 m concrete piers (used to extend the installation support points of the pile driving track 2 to facilitate the initial pile driving of the pile driving trolley 3) and 2 steel pipe piles. The spacing between adjacent track piles 13 along the moving direction of the mobile pile driving platform 4 can be 9 m, and the distance between the track pile 13 and the adjacent platform pile 11 (located in the same row) can be 8.75 m, that is, the track pile 13 is controlled to correspond one-to-one with the platform pile 11 in the corresponding row.

[0045] Among them, steel is used for welding between adjacent platform piles 11, between track piles 13, and between platform piles 11 and track piles 13;

[0046] II. Mobile piling platform (4-piece assembly)

[0047] The mobile piling platform 4 is assembled onto the auxiliary platform 10. In one specific scheme, the assembly of the mobile piling platform 4 can be divided into chassis assembly, platform assembly, piling device installation, platform 400t crawler crane installation, platform piling equipment installation, and platform auxiliary facility installation.

[0048] III. Construction of Piling Track 2

[0049] like Figure 3-4 As shown, the installation of the pile-driving track 2 on the track pile group 12 includes the following steps:

[0050] A1. Install steel caps 5 on each track pile 13, and install pedestrian walkways 20 on one side of the track pile group 12. Specifically:

[0051] Install steel pile cap 5: Fix steel pile cap 5 on each track pile 13. The steel pile cap 5 is an outer sleeve type, including a cylindrical pile sleeve 50 and a pile plate 51 set at the top of the pile sleeve 50. Specifically, the pile sleeve 50 can be made of a steel plate with a thickness of 9.65 mm and a height of 50 cm rolled into a circle. The pile plate 51 can be a square steel plate with a thickness of 10 mm and a size of 200 cm * 200 cm. The pile plate 51 is fixed to the top of the pile sleeve 50 in a closed manner.

[0052] Pedestrian walkway 20: The pedestrian walkway 20 is installed on the side of the steel pile cap 5 away from the platform pile 11. Specifically, it can be made of a 60 cm wide and 3 mm thick patterned steel plate. The pedestrian walkway 20 is equipped with 1.2 m high guardrails on both sides along the width direction for staff to use for daily commuting and emergency escape.

[0053] A2. A track beam 6 is installed at the top of the steel pile cap 5 along the length of the track pile group 12. The track beam 6 comprises two rows arranged side-by-side along the width of the track pile group 12. Each row of track beams 6 includes multiple detachably connected I-beams 60. In one specific technical solution, the ends of adjacent I-beams 60 are detachably connected via I-beam connectors 7. Figure 5 As shown, the I-beam connector 7 includes:

[0054] The I-beam head 70 is connected to the end of the adjacent I-beam 60, and its two ends are respectively matched with the end of the corresponding I-beam 60. The I-beam head 70 includes a bottom plate 71, a vertical plate 72, and a top plate 73 from bottom to top. The ends of the bottom plate 71 and the top plate 73 are provided with connecting blocks 74, and the ends of the I-beam 60 corresponding to the I-beam head 70 are provided with connecting grooves 75 that match the connecting blocks 74.

[0055] A pair of clamping plates 76 are respectively disposed on both sides of the vertical plate 72 to form a pair of clamping parts 77. The pair of clamping parts 77 are respectively connected and clamped to the middle plate of the I-beams 60 at both ends, and fixed by bolts through them.

[0056] A3. A track 8 is installed at the top of each track beam 6. A pair of tracks 8 constitutes the pile driving track 2. Each track 8 includes multiple detachably connected branch tracks 80. In one specific technical solution, adjacent branch tracks 80 are detachably connected via branch track connectors 9. Figure 6 As shown, the support rail connector 9 includes:

[0057] The track head is connected to the end of the adjacent branch track 80, and both ends are respectively matched with the end of the corresponding branch track 80. The track head includes a track plate 90, a connecting plate 91, and a base from bottom to top. The ends of the track plate 90 and the base are provided with inserts 92, and the ends of the branch track 80 corresponding to the track head are provided with slots 93 that match the inserts 92.

[0058] A pair of pressure plates 94 are respectively disposed on both sides of the connecting plate 91 to form a pair of clamping grooves 95 to clamp and fix the base located at both ends of the support rail connector 9. The pair of pressure plates 94 extend to press on the top of the rail beam 6 and are fixed to the rail beam 6 by bolts.

[0059] The docking points of adjacent I-beams 60 and adjacent support rails 80 are staggered. Preferably, the docking points (I-beam connectors 7) of adjacent I-beams 60 are located in the middle of two adjacent rail piles 13, and the docking points (support rail connectors 9) of adjacent support rails 80 are located above the steel pile caps 5.

[0060] IV. Installation of Pile Delivery Trolley 3

[0061] The pile-driving trolley 3 is hoisted onto the pile-driving track 2. The pile-driving trolley 3 can be composed of two 20-ton electric flatcars 30, with a motor model of YVPEJ3.0, a running speed of 20 m / min, and a buffer stroke of 118 mm. The two pile-driving trolleys 3 are welded together with steel. Each electric flatcar 30 has a receiving block 31 with an arc-shaped groove fixed to its top, which is used to limit the bearing of the steel pipe pile. The front end of the steel pipe pile protrudes from the front electric flatcar 30, which facilitates the subsequent binding of the end cable. The two electric flatcars 30 are spaced apart in the middle, which also facilitates the subsequent binding of the middle cable.

[0062] V. Pile Driving Construction

[0063] 5.1. Hoist the steel pipe piles onto the pile delivery trolley 3. Specifically, a 150-ton crawler crane can be used to hoist the steel pipe piles (which can transport 3 steel pipe piles at a time) from the steel pipe pile processing plant onto the pile delivery trolley 3.

[0064] 5.2 The driver of the pile driving trolley 3 shall follow behind the pile driving trolley 3 and maintain a safe distance of more than 5 m. The driver shall use remote control to control the pile driving trolley 3 to carry a single steel pipe pile and move forward on the pile driving track 2 until it reaches the pile lifting range of the mobile pile driving platform.

[0065] 5.3. Tie mooring ropes to the front end and middle of the steel pipe pile on the pile driving trolley 3. Then move the other end of the mooring ropes to the mobile pile driving platform 4 and fix the other end of the two mooring ropes to the pile driving platform. Then use a 400 t crawler crane to fix the automatic unhooking device to the top end of the steel pipe pile and lift it. Then lift the steel pipe pile into the corresponding pile gripper for pile driving. During the lifting process, tighten and loosen the mooring ropes to ensure that the steel pipe pile does not swing or rotate excessively when leaving the trolley and being lifted.

[0066] 5.4 After the pile lifting operation is completed, the driver of the pile delivery trolley 3 shall maintain a safe distance of more than 5m behind the trolley and walk on the pedestrian walkway 20 to follow the trolley back to the starting point;

[0067] 5.5 Repeat steps 5.1-5.4 until all steel pipe piles in that span are constructed using the mobile piling platform. Figure 2 As shown, the mobile piling platform needs to complete the construction of 7 steel pipe piles in each span, including 2 track piles 13 of the extended track pile group 12.

[0068] 5.6. Based on the two track piles 13 of the extended track pile group 12, a pile delivery track 2 is extended and set up, specifically including the following steps:

[0069] 5.6.1 Install steel pile caps 5 on the new track piles 13, and extend and install pedestrian walkways 20 on one side of the track pile group 12;

[0070] 5.6.2 Install the track beam 6 on the top of the newly installed steel pile cap 5 along the length of the track pile group 12;

[0071] 5.6.3 Install rails at the top of each newly installed track beam 6;

[0072] 5.7 Drive the mobile piling platform forward one span, and repeat steps 5.1-5.6 to carry out the piling construction of the next span of steel pipe piles;

[0073] 5.8 Repeat step 5.7 until all steel pipe piles are constructed.

[0074] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A method for driving piles in water based on a mobile pile driving platform, characterized in that, Includes the following steps: S1. Construct an auxiliary platform, assemble a mobile piling platform on the auxiliary platform, set up a track pile group on one side of the auxiliary platform, install a pile driving track on the track pile group, and install a pile driving trolley on the pile driving track. The installation of the pile driving track on the track pile group includes the following steps: A1. Install steel caps on each track pile and install a pedestrian walkway on one side of the track pile group; A2. Install track beams at the top of steel pile caps along the length of the track pile group, wherein the track beams include two rows arranged side by side along the width of the track pile group, and each row of track beams includes multiple detachably connected I-beams; A3. Install rails at the top of each track beam. A pair of rails constitutes the pile driving rail, wherein each rail includes multiple detachably connected support rails. Among them, the joint points of adjacent I-beams and the joint points of adjacent support rails are staggered; S2. A single steel pipe pile is carried by a pile-carrying trolley and transported to the lifting range of the mobile pile-driving platform. The mobile pile-driving platform lifts the steel pipe pile and sends it into the corresponding pile gripper for driving. After the steel pipe pile is lifted, the pile-carrying trolley returns to the starting point to continue the next pile-carrying operation. S3. Repeat S2 until all steel pipe piles in the span are constructed on the mobile piling platform, and then extend and install the pile delivery track. S4. Drive the mobile piling platform forward one span, and repeat S2-S3 to carry out the piling construction of the steel pipe piles for the next span. S5. Repeat step S4 until all steel pipe piles are constructed.

2. The method of driving a pile into water based on a mobile pile driving platform according to claim 1, characterized in that, The auxiliary platform includes 5 rows of platform piles, which are spaced apart along the moving direction of the mobile piling platform. Each row includes 3 auxiliary piles spaced apart. The track pile group, which is set up in parallel with the auxiliary platform, includes five track piles spaced apart, and the five track piles are set up in the same row as the five rows of platform piles.

3. The construction method for underwater pile driving based on a mobile pile driving platform as described in claim 1, characterized in that, The joints of adjacent I-beams are all located in the middle of two adjacent track piles, and the joints of adjacent support tracks are located above the steel pile caps.

4. The construction method for underwater pile driving based on a mobile pile driving platform as described in claim 1, characterized in that, The ends of adjacent I-beams are detachably connected via an I-beam connector, which includes: The H-beam head is connected to the end of an adjacent H-beam, and both ends are respectively matched with the corresponding ends of the H-beam. The H-beam head includes a bottom plate, a vertical plate, and a top plate from bottom to top. The ends of the bottom plate and the top plate are provided with connecting blocks, and the ends of the H-beams corresponding to the H-beam head are provided with connecting grooves that match the connecting blocks. A pair of clamping plates are set on both sides of the vertical plate to form a pair of clamping parts. The pair of clamping parts are respectively connected and clamped to the middle plate of the I-beam at both ends, and fixed by bolts.

5. The construction method for underwater pile driving based on a mobile pile driving platform as described in claim 4, characterized in that, Adjacent branch rails are detachably connected via branch rail connectors, wherein the branch rail connectors include: The track head is connected to the end of the adjacent support track, and both ends are respectively matched with the end of the corresponding support track. The track head includes a track plate, a connecting plate, and a base from bottom to top. The ends of the track plate and the base are provided with inserts, and the ends of the support tracks corresponding to the track head are provided with slots that match the inserts. A pair of pressure plates are respectively located on both sides of the connecting plate to form a pair of clamping grooves to clamp and fix the base located at both ends of the support rail connector. The pair of pressure plates extend to press onto the top of the rail beam and are fixed to the rail beam with bolts.

6. The construction method for underwater pile driving based on a mobile pile driving platform as described in claim 5, characterized in that, Each span of steel pipe pile construction includes two track piles for the extended track pile group. After all the steel pipe piles in a span are constructed, a pile-driving track is extended based on the two track piles of the extended track pile group.

7. The construction method for underwater pile driving based on a mobile pile driving platform as described in claim 1, characterized in that, The pile-driving trolley includes a pair of electric flatcars spaced apart, which are fixedly connected. Each electric flatcar has a receiving block with an arc-shaped groove fixed to its top for limiting the bearing of the steel pipe pile.

8. The construction method for underwater pile driving based on a mobile pile driving platform as described in claim 1, characterized in that, The steel pile cap is an outer sleeve type, including a cylindrical pile sleeve and a pile plate at the top of the pile sleeve.

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