A marine steel pipe pile transportation device and a transportation method

Abstract

The present application relates to offshore steel pipe pile sinking technology field, specifically relates to a kind of offshore steel pipe pile transport device and transport method, wherein offshore steel pipe pile transport device includes several longitudinal arrangement structural piles, structural pile is equipped with pile track, and the pile track is used for the movement of pile trolley.The present application uses the structural pile that has been completed as pile channel foundation, changes land pile to water pile;Compared with the transport mode of using push fill pile access road and offshore transport ship, the steel pipe pile is transported using the above structure, not disturbed by ground and marine external environment, easy to operate, low safety risk, high construction efficiency, and the state of transport device is stable when lifting pile, solve the offshore pile and pile in the harsh sea conditions under the condition that the effective shelter condition of rear land is not formed under the condition of breakwater construction difficulty.

Description

Technical Field

[0001] This invention relates to the field of offshore steel pipe pile driving technology, and in particular to an offshore steel pipe pile transportation device and transportation method. Background Technology

[0002] Offshore steel pipe pile driving construction requires the prefabricated steel pipe piles to be transported to the designated location first. Traditionally, steel pipe piles are transported mostly via land-based beam transport vehicles or by sea-based transport vessels. When using land-based beam transport vehicles, a temporary transport path needs to be created from the land side. This method is highly dependent on sea conditions; in situations with harsh sea conditions, long wave periods, difficulties in breaking seawall construction, and a lack of effective protection for the land behind the project site, it is difficult to create the transport path in place, resulting in long construction time, high operational difficulty, high cost, and significant safety risks. The sea-based transport method involves hoisting the steel pipe piles from a temporary dock onto a ship and then transporting them to the driving area, where a lifting vessel lifts them to the corresponding position. This method is difficult to use for transporting large components, has poor stability during lifting, is difficult to operate, and is not suitable for offshore steel pipe pile transportation under harsh sea conditions. Summary of the Invention

[0003] The purpose of this invention is to address the problem of high construction difficulty in transporting offshore steel pipe piles under harsh sea conditions by providing an offshore steel pipe pile transportation device and method.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A marine steel pipe pile transportation device includes a number of structural piles arranged longitudinally, and the structural piles are provided with pile delivery tracks for the pile delivery trolley to move.

[0006] The marine steel pipe pile transportation device provided by this invention utilizes the completed structural piles as the foundation for the pile transportation channel, transforming land-based pile transportation into water-based pile transportation. Compared with transportation methods using pile-filling access roads and marine transport vessels, the above-mentioned structural form for steel pipe pile transportation is not affected by the external land and marine environment, is simple to operate, has low safety risks, and high construction efficiency. Moreover, the transportation device is stable when lifting and erecting piles, solving the problem of marine pile transportation and erection under harsh sea conditions where the construction of breakwaters is difficult and effective protection for the land area behind is not provided.

[0007] Preferably, the pile-driving track includes a spreader beam, track beams, and steel rails. The spreader beam is transversely arranged on each of the structural piles. Two rows of track beams are provided on the spreader beam, and the track beams longitudinally connect adjacent spreader beams. Corresponding steel rails are installed on each of the two rows of track beams, and the steel rails allow the pile-driving trolley to travel on them. Using the spreader beam to transversely connect each of the structural piles facilitates widening, raising, and leveling of the pile-driving track, improving its load-bearing capacity. The track beams on the spreader beam to support and fix the steel rails facilitate laying, installation, and extension, and also help reduce the deflection deformation of the steel rails.

[0008] Preferably, protective railings are provided on both sides of the pile driving track to improve construction safety.

[0009] Preferably, a pedestrian walkway is provided on one side of the pile driving track for construction workers to pass through.

[0010] Preferably, the pile-driving trolley consists of two electric flatcars connected by a steel strand. The steel strand limits the maximum distance between the two electric flatcars, ensuring construction safety. Alternatively, depending on the load-bearing capacity of the pile-driving trolley, one or three electric flatcars can be used for the entire transportation process.

[0011] Preferably, the electric flatcar is equipped with a bollard device for fixing the steel pipe piles. The bollard device has an arc-shaped groove that matches the contour of the steel pipe pile; a baffle frame is provided at the free end of the arc-shaped groove. During installation, the steel pipe pile can be embedded in the arc-shaped groove of the bollard device, which can prevent tipping. The baffle frame is located at the end of the arc-shaped groove to prevent the steel pipe pile from moving longitudinally. For the rear electric flatcar, the baffle frame is located on the side relatively closer to the land area, and for the front electric flatcar, the baffle frame is located on the side relatively farther from the land area.

[0012] The present invention also provides a method for transporting offshore steel pipe piles, comprising the following steps:

[0013] A number of structural piles are constructed using a mobile piling platform, and at least one row of the structural piles is used as the foundation for the pile driving track on at least one side of the mobile piling platform.

[0014] Lay the pile driving track on the foundation of the pile driving track.

[0015] The pile-driving trolley is hoisted onto the pile-driving track, and the steel pipe pile is hoisted onto the pile-driving trolley. The pile-driving trolley is controlled to move along the pile-driving track to the pile-lifting range of the mobile pile-driving platform, so as to provide steel pipe piles for the pile-driving operation of the mobile pile-driving platform.

[0016] The above-mentioned method for transporting steel pipe piles at sea can extend the laying of the pile delivery track along with the pile driving progress of the mobile pile driving platform. When the pile delivery trolley transports steel pipe piles along the pile delivery track, it is not affected by the external environment of the land and sea. Moreover, the construction of structural piles is also less affected by the external environment of the land and sea. The method is simple to operate, has low safety risks, and high construction efficiency.

[0017] Preferably, the above-mentioned method for transporting offshore steel pipe piles further includes the step of: pouring at least two concrete piers at the starting platform of the mobile piling platform to extend the pile delivery track and facilitate construction.

[0018] Preferably, the driver of the pile delivery trolley follows behind the pile delivery trolley and maintains a safe distance of more than 5 meters, and controls the movement of the pile delivery trolley via remote control.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0020] 1. The marine steel pipe pile transportation device provided by the present invention uses the completed structural piles as the foundation for the pile transportation channel. It is not affected by the external environment of land and sea. It is simple to operate, has low safety risk, and high construction efficiency. Moreover, the transportation device is stable when lifting and erecting piles. It solves the problem of marine pile transportation and erection under harsh sea conditions where the construction of breakwater is difficult and the land behind is not effectively protected.

[0021] 2. The offshore steel pipe pile transportation method provided by this invention can extend the laying of the pile delivery track along with the pile driving progress of the mobile pile driving platform. When the pile delivery trolley transports the steel pipe piles along the pile delivery track, it is not affected by the external environment of the ground and the ocean. Moreover, the construction of structural piles is less affected by the external environment of the ground and the ocean. The operation is simple, the safety risk is low, and the construction efficiency is high. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a marine steel pipe pile transportation device in Example 1.

[0023] Figure 2 This is a side view of a marine steel pipe pile transportation device.

[0024] Figure 3 This is a construction status diagram of offshore steel pipe piles.

[0025] Icons: 1-Structural pile; 2-Pile driving track; 21-Spreader beam; 22-Track beam; 23-Steel rail; 3-Electric flatcar; 4-Steel strand; 5-Pile tying device; 51-Arched groove; 6-Baffle frame; 7-Pedestrian walkway; 8-Steel pipe pile; 9-Mobile pile driving platform. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings.

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] Example 1

[0029] This embodiment provides a marine steel pipe pile transportation device, such as... Figure 1 , Figure 2 As shown, the device includes several structural piles 1 (steel pipe piles after construction) arranged longitudinally. A pile-carrying track 2 is installed on each structural pile 1, allowing the pile-carrying trolley to move. This scheme utilizes the completed structural piles 1 as the foundation for the pile transport channel, transforming land-based pile transport into water-based pile transport. Compared to using a pile-filling access road and sea transport vessels, the above-mentioned structural form for transporting steel pipe piles 8 is unaffected by the external land and sea environments, is simple to operate, has low safety risks, high construction efficiency, and the transport device remains stable during pile lifting. This solves the problem of sea-based pile transport and erection under harsh sea conditions where breakwater construction is difficult and fails to provide effective protection for the land area behind.

[0030] Specifically, the pile driving track 2 includes a spreader beam 21, a track beam 22, and steel rails 23. The spreader beam 21 is transversely arranged on each structural pile 1. Two rows of track beams 22 are provided on the spreader beam 21, and the track beams 22 are longitudinally connected to adjacent spreader beams 21. Steel rails 23 are installed on each of the two rows of track beams 22, and the steel rails 23 are used for the movement of the pile driving trolley. Using the spreader beam 21 to be transversely connected to each structural pile 1 is beneficial for widening, raising, and leveling the pile driving track 2, thereby improving the load-bearing capacity of the pile driving track 2. Setting the track beams 22 on the spreader beam 21 to support and fix the steel rails 23 not only facilitates the laying, installation, and extension, but also helps to reduce the deflection deformation of the steel rails 23. In this embodiment, the track beam 22 is constructed from double-welded 25a# I-beams, and the spreader beam 21 is also constructed from double-welded 25a# I-beams. To prevent horizontal slippage of the pile-carrying trolley while it travels on the track, a limiting plate is added to the bottom of the rail 23 and connected to the track beam 22. The limiting plate is U-shaped, and the lower wing of the rail 23 can be fixed to the upper wing of the track beam 22 by bolts or welding. The track beam 22 has 1.2m high guardrails on both sides, and a pedestrian walkway 7 made of 80cm, 3mm thick checkered steel plate welded to one side, for use by staff commuting to and from get off work and for emergency escape.

[0031] Furthermore, in this embodiment, the pile-driving trolley consists of two 20t electric flatcars 3, connected by a steel strand 4 to limit the maximum movement distance between them and ensure construction safety. The pile-driving trolley is 2m wide, with the front car being 5m long and the rear car 10m long. The trolley is equipped with a braking system and a remote-controlled drive system. The two electric flatcars 3 are equipped with corresponding tie-down devices 5 for fixing the steel pipe piles 8. The tie-down device 5 has an arc-shaped groove 51 that matches the contour of the steel pipe pile 8 to prevent it from tipping over during erection. A baffle frame 6 is provided at the free end of the arc-shaped groove 51 to prevent the steel pipe pile 8 from moving longitudinally, also serving as a vertical erection device. Anchor holes are provided on both sides of the tie-down device 5 for easy transport and binding. In addition, a rail clamp is installed on the pile-driving trolley as a securing device to prevent the trolley from tipping over.

[0032] Example 2

[0033] Based on Example 1, this embodiment also provides a method for transporting offshore steel pipe piles, including the following steps:

[0034] Step 1, as follows Figure 3 As shown, a mobile piling platform 9 is used to drive steel pipe piles 8 at the starting platform on the land side. The mobile piling platform 9 is existing technology, and its specific structure is not described in detail but can be found in the piling platform provided in announcement number CN215801619U. According to the pile layout, the mobile piling platform 9 can drive 7 steel pipe piles 8 for each span it moves. After the 7 steel pipe piles 8 are driven, a 400-ton crawler crane removes one span of the tail track beam 22 and installs it at the head. Then, the piling platform is driven forward one span to carry out the piling of 7 steel pipe piles 8. The above steps are repeated until all steel pipe piles 8 are constructed. The berth structure pile construction can be completed without the need to build a steel trestle bridge or construction access road, and it is less affected by the external marine environment. The outermost steel pipe structure pile (i.e., steel pipe pile) on the berth is used as the foundation for the pile driving track. To distinguish it from the steel pipe piles 8 in the construction preparation state (including the transportation state), this paper refers to the steel pipe piles 8 that have completed the piling construction as structural piles 1.

[0035] Step two involves measuring the elevation of the completed structural pile 1 to guide the elevation control of the pile driving track 2. Before driving the pile, two 2.0m*1.0m*0.5m concrete piers are poured at the starting platform at a spacing of 12m to extend the pile driving track 2 and facilitate construction.

[0036] Step 3: Process and weld the pile driving track 2, which is assembled from the spreader beam 21 and the track beam 22. Specifically, install the spreader beam 21, which is made of double 25a I-beams, on each structural pile 1, with its direction perpendicular to the track direction, and perform welding operations; then install the track beam 22, which is also made of double 25a I-beams, and simultaneously add a limiting plate at the bottom of the track beam 22 and weld it to the spreader beam 21 or the embedded plate of the concrete pier.

[0037] Step four: hoist the P50 rail 23 onto the track beam 22 and perform welding operations until the rail 23 is laid to the set length.

[0038] Step 5: After the steel rail 23 is laid, the front and rear electric flatcars 3 are hoisted onto the pile-driving rail 2.

[0039] Step 6: Hoist the generator onto the electric flatbed cart 3 and connect the generator to the wiring of the electric flatbed cart 3.

[0040] Step 7: Then, a 150t tracked crane is used to lift the steel pipe piles 8 that were transported from the steel pipe pile 8 processing plant onto the pile delivery trolley.

[0041] Step 8: Start the generator and begin pile transportation. According to the pile driving operation procedure, the driver of the pile delivery trolley should maintain a safe distance of more than 5 meters behind the trolley and use remote control to deliver the single pile on the trolley track to the lifting range of the mobile pile driving platform. After the pile lifting operation is completed, the driver of the pile delivery trolley should maintain a safe distance of more than 5 meters behind the trolley and walk on the pedestrian walkway 7 to follow the trolley back to the starting point to continue the next pile delivery operation.

[0042] The above-mentioned method of transporting steel pipe piles 8 at sea can extend the laying of the pile delivery track 2 along with the pile driving progress of the mobile pile driving platform 9. When the pile delivery trolley transports the steel pipe piles 8 along the pile delivery track 2, it is not affected by the external environment of the ground and the ocean. Moreover, when constructing the structural piles 1, it is less affected by the external environment of the ground and the ocean. The operation is simple, the safety risk is low, and the construction efficiency is high.

[0043] The above-mentioned offshore steel pipe pile transportation device and method can effectively resist the impact of severe sea conditions on the transportation of steel pipe piles 8, and the pile delivery trolley and pile delivery track 2 can be recycled and reused.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A marine steel pipe pile transportation device, characterized in that, The system includes several structural piles (1) arranged longitudinally. Each structural pile (1) is provided with a pile-feeding track (2), and a pile-feeding trolley is provided on the pile-feeding track (2). The pile-feeding track (2) includes a spreader beam (21), a track beam (22), and a steel rail (23). The spreader beam (21) is arranged laterally on each of the structural piles (1). Two rows of track beams (22) are provided on the spreader beams (21). The track beams (22) are longitudinally connected to each of the spreader beams (21), and the steel rails (23) are installed on each of the two rows of track beams (22). The pile-driving track (2) can be extended and laid in accordance with the pile-driving progress of the mobile pile-driving platform (9); at least one row of the structural piles (1) is used as the foundation of the pile-driving track (2) on at least one side of the mobile pile-driving platform (9). The pile-driving trolley consists of two electric flatcars (3), and the two electric flatcars (3) are connected by a steel strand (4). The electric flatcar (3) is equipped with a pile-tying device (5) for fixing the steel pipe pile (8). The pile-tying device (5) is equipped with an arc-shaped groove (51) that matches the outline of the steel pipe pile (8). The free end of the arc-shaped groove (51) is equipped with a baffle frame (6).

2. The offshore steel pipe pile transportation device according to claim 1, characterized in that, The pile-driving track (2) is equipped with guardrails on both sides.

3. The offshore steel pipe pile transportation device according to claim 1, characterized in that, A pedestrian passage (7) is provided on one side of the pile-driving track (2).

4. A method for transporting offshore steel pipe piles, applied to the offshore steel pipe pile transport device according to any one of claims 1 to 3, characterized in that, Includes the following steps: A number of structural piles (1) are constructed using a mobile piling platform (9), and at least one row of the structural piles (1) is used as the foundation for the pile delivery track on at least one side of the mobile piling platform (9). Lay a pile driving track (2) on the basis of the pile driving track; The pile-driving trolley is hoisted onto the pile-driving track (2), and the steel pipe pile (8) is hoisted onto the pile-driving trolley. The pile-driving trolley is controlled to be sent along the pile-driving track (2) to the pile-lifting range of the mobile pile-driving platform (9).

5. A method for transporting offshore steel pipe piles according to claim 4, characterized in that, It also includes the step of: at the starting platform, pouring at least two concrete piers to extend the pile driving track (2).

6. A method for transporting offshore steel pipe piles according to claim 4 or 5, characterized in that, The driver of the pile delivery trolley follows behind the pile delivery trolley at a safe distance of more than 5 meters and controls the movement of the pile delivery trolley via remote control.

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