Construction method for underwater pile pulling through tidal range

Abstract

The invention provides a construction method for underwater pile pulling by utilizing tidal range. The construction method comprises the following steps: firstly, barge model selection is carried out; installing a winch and a pulley block on the barge; the barge is moved to the position near the anchor pile, and the position below the steel wire rope of the stern pulley block is fixed to the position over the anchor pile through a hinge anchor; winding and binding a winch steel wire rope to the root of the propped anchor pile through a shackle, and tightening the winch steel wire rope on the deck surface; the anchor pile is pulled out of the seabed surface slowly by tightening a winch steel wire rope through tidal range buoyancy when rising tide is waited. A winch is arranged on a barge stern deck to be connected with a pulley block, a steel wire rope is wound and bound to the root of an inclined concrete anchor pile, the anchor pile driven into the seabed is automatically pulled out through the tidal range in the flood tide period and ship buoyancy, and the problem that cutting equipment cannot be installed due to the fact that two inclined piles abut against each other in the traditional seabed cutting process is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge engineering construction, and in particular relates to a construction method for underwater pile pulling utilizing tidal range. Background Art

[0002] During the construction of cross-sea bridges, steel trestles serve as important temporary water-based construction channels and work platforms. In harsh and deep water conditions, the removal of underwater concrete steel pipe piles during bridge construction is challenging due to the high depth requirements for driving piles. This is especially true when inclined piles are leaning against each other, making it difficult to install seabed cutting equipment and making the cutting and lifting removal method unsuitable. This invention addresses the challenges of harsh sea conditions and frequent extreme weather in construction waters, as well as the high risk, high cost, and low efficiency of traditional manual diving steel pipe pile cutting. The invention proposes a pile extraction method that utilizes tidal buoyancy to remove inclined seabed concrete piles. Summary of the Invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes a construction method for underwater pile pulling using tidal range.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] A construction method for underwater pile extraction using tidal range comprises the following steps:

[0006] S1. Barge selection;

[0007] S2. Install the winch and pulley block on the barge;

[0008] S3. Move the barge to the vicinity of the anchor pile and, by hinged anchor, position the lower part of the wire rope of the stern pulley block to just above the anchor pile.

[0009] S4. Wrap the winch wire rope around the shackle and tie it to the root of the anchor pile, and tighten the winch wire rope on the deck.

[0010] S5. Wait for high tide, tighten the winch wire rope through the buoyancy of the tidal difference, and slowly pull the anchor pile out of the seabed.

[0011] Furthermore, in step S1, the selected barge type must be a deck barge that can be positioned with four anchors.

[0012] Furthermore, in step S2, two winches are welded parallel to the deck surface.

[0013] Furthermore, a pulley block is installed on a lifting lug outside the stern of the ship, and a winch wire rope is lowered through the pulley block.

[0014] Furthermore, in step S3, the position of the underwater anchor pile is accurately located by GPS.

[0015] Furthermore, in step S4, a diver dives into the water during low tide and winds and ties the winch wire to the root of the anchor pile.

[0016] Furthermore, in step S4, the diver instructs the deck to tighten the winch wire rope and then return to the water surface.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The present invention successfully solves the problem of being unable to cut and salvage the top concrete anchor piles in complex sea conditions such as deep-water areas with many types of obstacles, large volumes, and fast water flow. It cleverly uses the natural tidal range and ship buoyancy phenomenon to successfully complete the removal of the top concrete anchor piles in deep-water areas. It invents a phased operation mode of diving binding during flat tide and buoyancy removal during high tide, and constructs a collaborative operation system of semi-daily tidal hydrology and dynamic construction windows, which reduces the impact of the water environment on operations, improves construction efficiency, ensures construction quality, achieves better economic benefits, meets the requirements of green and environmentally friendly construction, has great promotion value, and has good social benefits, and accumulates valuable experience for similar construction processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the construction process of tidal range buoyancy pile extraction;

[0021] Figure 2 Arrange a plan for the deck winch;

[0022] Figure 3 This is the elevation view of the tidal buoyancy pile.

[0023] Description of reference numerals:

[0024] 1-Barge; 2-Pulley block; 3-Winch wire rope; 4-Seawater; 5-Inclined concrete anchor pile; 6-Seabed; 7-Seabed bottom geology; 8-Winch. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first", "second" and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0029] A construction method for pulling piles underwater using tidal range, such as Figures 1 to 3 As shown, the following steps are included:

[0030] S1. Barge selection: Select a deck barge with sufficient depth and draft, strong stability, and the ability to position four anchors. Ensure that the tonnage and cargo capacity meet the seabed surface 6 buoyancy pile pulling requirements.

[0031] S2. Install winch 8 and pulley block 2 on barge 1;

[0032] S3. Use GPS to accurately locate the underwater anchor pile. Move the barge to the vicinity of the anchor pile. Hinge the anchor to position the bottom of the wire rope of the stern pulley block to just above the anchor pile.

[0033] S4. Wrap the winch wire rope 3 around the anchor pile root with the shackle and tighten the winch wire rope on the deck surface;

[0034] S5. Pulling piles by ship buoyancy at high tide: g-0 Since the winch wire rope was tightened at the lowest tide, the ship slowly rises due to buoyancy during the rising tide. Finally, the buoyancy of the tidal difference tightens the winch wire rope and slowly pulls the inclined concrete anchor pile 5 out of the bottom geology 7 of the seabed.

[0035] In step S1, the selected barge type must be a deck barge that can be positioned with four anchors.

[0036] In step S2, two winches are welded parallel to the deck surface. A pulley block is installed on the lifting lug outside the stern, and the winch wire rope is lowered through the pulley block.

[0037] In step S4, the diver dives into the water during the low tide period of the sea water 4 and winds and ties the winch wire to the root of the inclined concrete anchor pile.

[0038] In step S4, the diver directs the deck to tighten the winch wire rope and then returns to the surface.

[0039] The present invention meets the requirements of offshore concrete anchor pile removal construction, and is particularly suitable for anchor piles that cannot be removed using conventional cutting and salvaging processes. A winch is arranged on the stern deck of the barge to connect the pulley block, and a steel wire rope is wound and bound to the root of the inclined concrete anchor pile. The anchor pile driven into the seabed is automatically removed by the tidal range during high tide and the buoyancy of the ship, solving the problem that the cutting equipment cannot be installed because two inclined piles are pressed against each other in traditional seabed cutting. A phased operation mode of diving and binding during flat tide and buoyancy removal during high tide is invented, and a collaborative operation system of semi-diurnal tidal hydrology and dynamic construction window is constructed, which reduces the impact of the water environment on the operation, has flexible operation and high construction efficiency, and avoids the safety risks caused by frequent adjustment of cutting equipment on the seabed, saving overall construction costs.

[0040] 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, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A construction method for underwater pile extraction using tidal range, characterized in that: The steps include: S1. Barge selection; S2. Install the winch and pulley block on the barge; S3. Move the barge to the vicinity of the anchor pile and, by hinged anchor, position the lower part of the wire rope of the stern pulley block to just above the anchor pile. S4. Wrap the winch wire rope around the shackle and tie it to the root of the anchor pile, and tighten the winch wire rope on the deck. S5. Wait for high tide, tighten the winch wire rope through the buoyancy of the tidal difference, and slowly pull the anchor pile out of the seabed.

2. The method for underwater pile extraction using tidal range according to claim 1, characterized in that: In step S1, the selected barge type must be a deck barge that can be positioned with four anchors.

3. The method for underwater pile extraction using tidal range according to claim 1, characterized in that: In step S2, two winches are welded parallel to the deck surface.

4. The method for underwater pile extraction using tidal range according to claim 3, characterized in that: The pulley block is installed on the lifting lug outside the stern of the ship, and the winch wire rope passes through the pulley block and is lowered.

5. The method for underwater pile extraction using tidal range according to claim 1, characterized in that: In step S3, the position of the underwater anchor pile is accurately located by GPS.

6. The method for underwater pile extraction using tidal range according to claim 1, characterized in that: In step S4, the diver dives into the water during low tide and winds and ties the winch wire to the root of the anchor pile.

7. The method for underwater pile extraction using tidal range according to claim 6, characterized in that: In step S4, the diver directs the deck to tighten the winch wire rope and then returns to the surface.

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