Method for pouring floating state buoy balance weight through ebb tide

Abstract

The invention discloses a method for pouring a floating-state buoy balance weight through ebb tide in the field of offshore concrete pouring, and the method comprises the following steps that 1, a buoy is divided into eight compartments; 2, a construction platform is built, and tools are arranged; thirdly, pump pipe sole timber units are arranged at inlets of the buoys; fourthly, pouring is conducted from the two farthest compartments to the first pouring face; 5, the position of the pump pipe is transferred to a pump pipe containing tool; sixthly, steel partition plates are additionally arranged at the through holes of the two farthest compartments, the construction platform is dismantled, and concrete is poured to a second pouring termination face; and 7, repeating the steps from far to near until the rest six compartments are poured. According to the method, through the pump pipe sole timber unit, the gap between the section of pump pipe and the inlet platform due to the fact that the floating body lowers along with the water level is made up, pouring and leveling are conducted in sequence, the pouring efficiency is improved, and the situation that ballast water is used for a huge semi-submersible platform where the floating cylinder is located for a long time is avoided.

Description

Technical Field

[0001] The invention belongs to the field of offshore concrete pouring, and in particular relates to a method for pouring a floating buoy counterweight by utilizing ebb tide. Background Art

[0002] Buoy counterweight is a method used to increase the stability of a buoy and control its position in the water. Pumping cement from the transport vehicle into the buoy through the on-board pump and adding appropriate counterweights to the buoy can ensure the balance and stability of the buoy in the water, especially in the case of large waves or turbulent water. Buoy counterweights are often used in floating foundations that need to provide balance and stable support. Through the reasonable design and installation of floating counterweights, the structure can be kept balanced, stable and safe in the water. Concrete as a counterweight material has the advantages of high density, easy access and strong plasticity, and is often used in the counterweight of buoys. In some offshore platforms or marine projects at sea, some electrical equipment needs to be placed, so an inner cabin will be set in the middle of the pontoon, which makes the pontoon structure complicated. When adding fixed counterweights to steel structure pontoons, the use of concrete will have the challenge of narrow pouring space. According to the transportation requirements of the pontoon, the pontoon needs to be poured at the dock. During the pouring process, it is very susceptible to the effects of wind, waves and tides. Changes in water levels will cause the concrete pouring pump pipe to be affected by relative displacement in the vertical direction, causing the pontoon to shake, interfering with the normal pouring. Summary of the invention

[0003] The present invention aims to provide a method for casting a floating buoy counterweight using low tide, so as to solve the problem in the prior art that offshore casting buoys are easily affected by wind and waves and tides, causing the sea surface water level to change, thereby causing the buoy to shake and interfere with the normal casting.

[0004] A method for casting a floating buoy counterweight using ebb tide in this scheme comprises the following steps:

[0005] Step 1: Divide the buoy into eight compartments, each of the eight compartments has a bottom through hole near the bottom, each of the eight compartments has a through hole near the top, and the bottom through holes and through holes of adjacent compartments are interconnected;

[0006] Step 2: The buoy is moored to the front of the wharf, and a construction platform is built in the compartment of the buoy;

[0007] Step 3: Lay out the horizontal pump pipe fixing fixture and the vertical pump pipe fixing fixture;

[0008] Step 4: Lay out the pump pipe pad unit at the buoy inlet;

[0009] Step 5: Choose the appropriate low tide period and lay out the pump pipe;

[0010] Step 6: Start pouring the first stage of concrete, pouring concrete from the two farthest compartments to the first pouring surface, and leveling after pouring;

[0011] Step 7: Weld the pump pipe placement tooling of each compartment in the second stage to the middle and upper part of the through hole, that is, the second casting end surface, and transfer the pump pipe to the pump pipe placement tooling;

[0012] Step 8: Add steel partitions at the through holes of the two farthest compartments. The highest point of the steel partition is flush with the bottom of the pump pipe placement tooling, and start the second stage of concrete pouring;

[0013] Step 9: Cast the two farthest compartments to the level of the top of the steel partition, i.e. the second casting end surface, and level them after completion;

[0014] Step 10: Repeat steps 6, 7 and 8 according to the principle of from far to near, and cast the remaining compartments symmetrically in sequence to the second casting end surface.

[0015] Furthermore, the horizontal pump pipe fixing tooling in step three includes a horizontal pump pipe fixing tooling on the ground at the front of the wharf and a compartment-embracing horizontal pump pipe fixing tooling.

[0016] Furthermore, in step 4, the pump pipe pad unit at the buoy inlet is added with pads during low tide, i.e., when the water level drops, to fill the gap between the pump pipe section and the inlet platform caused by the buoyancy body dropping with the water level.

[0017] Furthermore, in step 5, the outlet preparation position of the pump pipe is at the compartment farthest from the front edge of the wharf.

[0018] Furthermore, in step six, since the bottom through holes of each compartment are interconnected, all compartments are filled with concrete under the influence of gravity, and the concrete pouring continues to the first pouring surface, that is, the uppermost end of the bottom through hole.

[0019] Furthermore, in step eight, when the second stage pouring is carried out, the construction platforms of the two farthest compartments need to be dismantled first.

[0020] The beneficial effects of this scheme are as follows: according to the changing law of tidal water level at the dock in the past, the pouring is carried out during the high tide period of appropriate length; at the inlet of the buoy, that is, at the maximum pumping height, the pump pipe is subjected to the least pressure, and the pump pipe pad unit is arranged to adapt to the influence of the tidal water level change on the vertical relative displacement of the pump pipe during concrete pouring;

[0021] By rationally arranging the construction channels and construction platforms, and choosing to use symmetrical pouring to speed up the pouring efficiency and rationality, the stacking of the pads in the pump pipe pad unit is used to offset the relative displacement of the front edge of the dock and the pontoon in the vertical direction caused by the lowering of the water level at low tide, thereby avoiding the time-consuming method of using ballast water on the huge semi-submersible platform where the pontoon is located. By using a reasonable pouring sequence of construction platform layout, welding of the pump pipe square frame required for the second stage pouring, and the addition of steel partitions, the concrete pouring of the fixed compartment of the floating pontoon can be carried out smoothly and in compliance with regulations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a flow chart of a method for casting a floating buoy counterweight using ebb tide according to the present invention;

[0023] Figure 2 It is a schematic diagram of the relative position of the buoy and the dock;

[0024] Figure 3 It is a schematic diagram of the structure to be poured into the compartment;

[0025] Figure 4 It is a top view schematic diagram of the structure to be poured into the partition;

[0026] Figure 5 This is a schematic diagram of the outer compartment standing plate of the buoy;

[0027] Figure 6 This is a cross-sectional diagram of the first stage of the pouring space;

[0028] Figure 7 This is a schematic cross-sectional view of the space to be poured before the second stage of pouring begins;

[0029] Figure 8 This is a cross-sectional diagram of the second stage of the pouring space; DETAILED DESCRIPTION

[0030] The following is further described in detail through specific implementation methods:

[0031] The figure marks in the drawings of the specification include: dock front 1, vehicle-mounted pump 2, semi-submersible buoy 3, pontoon 4, pump pipe pad unit 5, pontoon inlet 6, pump pipe 7, inner cabin 8, bulkhead 9, bulkhead vertical plate 10, through hole 11, construction platform 12, bottom through hole 13, pump pipe placement tooling 14, steel partition 15.

[0032] The embodiment is basically as shown in the attached Figures 1 to 8 As shown: A method for casting a floating buoy counterweight using ebb tide, the specific steps are as follows:

[0033] Step 1: Divide the buoy 4 into an inner cabin 8 and eight compartments 9. The eight compartments 9 are separated in sequence by seven compartment 9 vertical plates 10. The inner cabin 8 is located at the center of the eight compartments 9. The seven compartment vertical plates 10 are provided with bottom through holes 13 near the bottom, and the seven compartment vertical plates 10 are provided with through holes 11 near the top. The bottom through holes 13 and through holes 11 of adjacent compartments 9 are connected to each other.

[0034] Step 2: berth the semi-submersible buoy 3 to the front edge of the wharf 1, and the staff enters the buoy 4 to build a construction platform 12 in the compartment 9;

[0035] Step 3: Lay out the horizontal pump pipe 7 fixing tooling and the vertical pump pipe 7 fixing tooling, the horizontal pump pipe 7 fixing tooling includes the horizontal pump pipe 7 fixing tooling on the ground at the front edge of the wharf 1 and the horizontal pump pipe 7 fixing tooling in the shape of a compartment 9;

[0036] Step 4: Arrange the pump pipe pad unit 5 at the buoy inlet 6. The pump pipe pad unit 5 at the buoy inlet 6 is used to add pads here to fill the gap between the section of pump pipe 7 and the inlet platform caused by the semi-submersible buoy 3 as the water level drops during the ebb tide, that is, the water level drops;

[0037] Step 5: Choose a suitable low tide period and lay out the pump pipe 7. The preparation position of the pump pipe 7 is at the farthest compartment 9 relative to the front edge 1 of the wharf;

[0038] Step 6: After the vehicle-mounted pump 2 is in place, the first stage of concrete pouring begins, starting from the two farthest compartments 9, i.e., compartments ① and ②. Since the bottom through holes 13 of each compartment 9 are interconnected, all compartments 9 are filled with concrete under the influence of gravity. The concrete pouring continues to the first pouring surface (i.e., the uppermost end of the bottom through hole 13), and leveling is performed after pouring.

[0039] Step 7: Weld the pump pipe placement tool 14 (i.e., square tube) of each compartment 9 in the second stage to the middle and upper part of the through hole 11 (i.e., the second casting end surface), and transfer the position of the pump pipe 7 in the compartment 9 to the pump pipe 7 placement tool;

[0040] Step 8: Add steel partitions 15 at the through holes 11 of the ① and ② compartments 9, the highest point of the steel partitions 15 is flush with the bottom of the tooling for placing the pump pipe 7, and remove the construction platforms 12 of the ① and ② compartments 9, and start the second stage of concrete pouring;

[0041] Step 9: Cast the ① and ② compartments to the level of the top of the steel partition 15 (i.e., the second casting end surface), and level them after completion;

[0042] Step 10: According to the principle of from far to near, repeat steps 7, 8 and 9, and pour compartments ③④, ⑤⑥, ⑦⑧ symmetrically in sequence to the second pouring end surface.

[0043] The advantages of this method are: according to the changing law of the tidal water level at the dock in the past, the pouring is selected at a high tide period of appropriate length; at the buoy inlet 6, that is, at the maximum pumping height, the pump pipe 7 is subjected to the smallest pressure, and the pump pipe pad unit 5 is arranged to adapt to the influence of the tidal water level change on the vertical relative displacement of the pump pipe 7 during the concrete pouring;

[0044] By reasonably arranging the construction channel and the construction platform 12, and choosing to use symmetrical pouring, the pouring efficiency and rationality are accelerated, and the superposition of the pads in the pump pipe pad unit 5 is used to offset the relative displacement of the dock front 1 and the pontoon 4 in the vertical direction caused by the lowering of the water level at low tide, the time-consuming method of using ballast water for the huge semi-submerged platform where the pontoon 4 is located is avoided. By using the construction platform 12 arrangement with a reasonable pouring sequence, welding the pump pipe 7 square frame 14 required for the second stage pouring, and adding the steel partition 15, the concrete pouring of the fixed compartment 9 of the floating pontoon 4 can be carried out smoothly and in compliance with regulations.

[0045] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A method for casting a floating buoy counterweight using ebb tide, characterized in that: The following steps are involved: Step 1: Divide the buoy into eight compartments, each of the eight compartments has a bottom through hole near the bottom, each of the eight compartments has a through hole near the top, and the bottom through holes and through holes of adjacent compartments are interconnected; Step 2: The buoy is moored to the front of the wharf, and a construction platform is built in the compartment of the buoy; Step 3: Lay out the horizontal pump pipe fixing fixture and the vertical pump pipe fixing fixture; Step 4: Lay out the pump pipe pad unit at the buoy inlet; Step 5: Choose the appropriate low tide period and lay out the pump pipe; Step 6: Start pouring the first stage of concrete, pouring concrete from the two farthest compartments to the first pouring surface, and leveling after pouring; Step 7: Weld the pump pipe placement tooling of each compartment in the second stage to the middle and upper part of the through hole, that is, the second casting end surface, and transfer the pump pipe to the pump pipe placement tooling; Step 8: Add steel partitions at the through holes of the two farthest compartments. The highest point of the steel partition is flush with the bottom of the pump pipe placement tooling, and start the second stage of concrete pouring; Step 9: Cast the two farthest compartments to the level of the top of the steel partition, i.e. the second casting end surface, and level them after completion; Step 10: Repeat steps 6, 7 and 8 according to the principle of from far to near, and cast the remaining compartments symmetrically in sequence to the second casting end surface.

2. A method for casting a floating buoy counterweight using ebb tide according to claim 1, characterized in that: The horizontal pump pipe fixing tooling in step three includes a horizontal pump pipe fixing tooling on the ground at the front of the wharf and a compartment-embracing horizontal pump pipe fixing tooling.

3. A method for casting a floating buoy counterweight using ebb tide according to claim 2, characterized in that: In step 4, the pump pipe pad unit at the buoy inlet is used to add pads at this location during low tide, i.e., when the water level drops, to fill the gap between the pump pipe section and the inlet platform caused by the buoyancy body dropping with the water level.

4. A method for casting a floating buoy counterweight using ebb tide according to claim 3, characterized in that: The outlet preparation position of the pump pipe in step 5 is at the compartment farthest from the front edge of the wharf.

5. A method for casting a floating buoy counterweight using ebb tide according to claim 4, characterized in that: In step 6, since the bottom through holes of each compartment are interconnected, all compartments are filled with concrete under the influence of gravity, and the concrete pouring is continued to the first pouring surface, that is, the uppermost end of the bottom through hole.

6. A method for casting a floating buoy counterweight using ebb tide according to claim 5, characterized in that: In step eight, when pouring the second stage, the construction platforms of the two farthest compartments need to be dismantled first.

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