Steel box unit combined structure of large berthing buoyancy tank

Abstract

The steel box unit combined structure comprises a bottom plate and a top plate, outer webs are arranged on the two sides of the bottom plate, and the outer webs are vertically and correspondingly welded and fixed to the top plate and the bottom plate; two middle webs distributed at an interval are arranged between the outer webs; the middle webs correspond up and down and are fixedly welded with the top plate and the bottom plate; and hollow partition plates are welded and fixedly mounted between the middle webs and between the middle webs and the outer webs. Angle steel is fixedly installed on the periphery of the hollow partition plate in a distributed and welded mode at intervals, and the angle steel transmits force borne by all parts of the box body to the hollow partition plate to be dispersed.

Description

TECHNICAL FIELD

[0001] The present application relates to a large-scale berthing pontoon steel box unit combined structure, belonging to the technical field of offshore floating platform. BACKGROUND

[0002] The berthing pontoon forms a floating platform on the sea, which can be used for sea cargo transportation, offshore operation platform and other purposes. For a large-size berthing pontoon body, a plurality of box units prefabricated in advance are used for assembly, as disclosed in Chinese Patent No. CN208802126U.

[0003] The cross section of the steel box unit is a three-box hole structure, and a stable support needs to be formed in the middle of the steel box unit. The existing middle support of the steel box unit is disclosed in Chinese Patent No. CN202295235U, which uses a vertical longitudinal bulkhead column for strengthening support in the middle of the box body. However, when subjected to local force, the box body cannot uniformly bear force. SUMMARY

[0004] To solve the above technical problems, the present application provides a large-scale berthing pontoon steel box unit combined structure.

[0005] The present application is achieved by the following technical solutions.

[0006] The present application provides a large-scale berthing pontoon steel box unit combined structure, which comprises: A steel box unit with force transmission and dispersion by multiple angle steels.

[0007] The steel box unit comprises: A bottom plate and a top plate, both sides of the bottom plate have outer webs, and the outer webs are welded and fixed to the top plate and the bottom plate in correspondence; There are two spaced middle webs between the outer webs, and the middle webs are welded and fixed to the top plate and the bottom plate in correspondence; The middle webs and the outer webs are welded and fixedly installed with hollow partition plates.

[0008] The hollow partition plates are welded and fixedly installed with angle steels at the outer periphery, and the angle steels transmit the force received by each part of the box body to the hollow partition plates for dispersion.

[0009] The hollow partition plates are welded and fixedly installed with circular tubes, and the middle part of the hollow partition plate in the middle is welded and fixedly installed with a vertical column, and the vertical column is welded and fixedly installed with a T-shaped longitudinal rib.

[0010] The middle web is fixedly installed with an ear plate, and the ear plate is provided with a lifting hole; the top plate at the upper part of the ear plate is provided with a cable passing hole.

[0011] The top plate near the over-cable hole is provided with a manhole, the top plate at the manhole is provided with an openable cover plate, and the middle web plate below the manhole is provided with a crawling ladder.

[0012] The bracket is fixedly connected with a rubber body, and the rubber body and the bracket form a fender structure providing elastic buffering on the outer web plate of the berthing float.

[0013] The bracket is composed of vertical plates, longitudinal plates and mounting panels, a plurality of vertical plates and a plurality of longitudinal plates are perpendicularly and staggeringly welded and fixed, and the plurality of vertical plates, the plurality of longitudinal plates and the outer web plate are fixedly contacted at multiple positions; the mounting panels are welded and fixed on the vertical plates and the longitudinal plates, and the rubber body is fixed on the mounting panels.

[0014] The steel box unit disperses the force received through the open-web partition and the angle steel distributed around the open-web partition, and solves the problem that each part cannot uniformly bear the force when the box body is locally stressed. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic diagram of the berthing float of the present application; Figure 2 is a top view structural schematic diagram of the present application showing the misalignment of the splicing joint of the top plate and the outer web plate; Figure 3 is a bottom view structural schematic diagram of the present application showing the misalignment of the splicing joint of the outer web plate and the bottom plate; Figure 4 is a structural schematic diagram of the present application showing the longitudinal distribution of the steel box unit; Figure 5 is a structural schematic diagram of the present application showing the state of the top plate; Figure 6 is a structural schematic diagram of the present application showing the state of the berthing float with solid-web partition; Figure 7 is a structural schematic diagram of the present application showing the distribution of the solid-web partition and the waist plate; Figure 8 is a structural schematic diagram of the present application showing the distribution of the solid-web partition, the open-web partition and the waist plate; Figure 9 is a structural schematic diagram of the present application showing the distribution of the lifting lug plate and the middle web plate; DETAILED DESCRIPTION

[0016] The technical solutions of the present application are further described below, but the scope of protection is not limited to the description.

[0017] Reference is made to the drawings attached Figures 1 to 9 in the specification.

[0018] The existing prefabricated box unit technology, see Chinese patent No. CN217460217U, although, can complete the welding between the bottom plate and the top plate, the web plate and the bottom plate, and the top plate in the channel, but when welding the top plate bottom and the web plate, the side sealing plate top connection in the channel needs to be welded from the top, which causes high labor intensity.

[0019] The application discloses a mooring pontoon manufacturing process method, which comprises two steps of prefabricating a steel box unit and assembling the mooring pontoon.

[0020] The prefabrication step of the steel box unit is as follows.

[0021] One steel box unit corresponds to two top plates 1, one bottom plate 2, two middle webs 3, two outer webs 4 and three hollow web plates 5.

[0022] Two top plates 1 are first laid and welded in a down state, which can be understood as rotating the middle top plate 1 from an up state to a down state. Figure 4 Figure 5 The T-shaped longitudinal rib 6 and the angle steel 11 are welded and fixed to the top plate 1.

[0023] The middle hollow web plate 5 is welded and fixed to the middle part of the top plate 1, the angle steel 11 and the longitudinal middle web 3 are welded and fixed on both sides of the middle hollow web plate 5, and the stand 7 and the circular pipe 8 are welded and fixed on the middle hollow web plate 5.

[0024] The hollow web plates 5 on both sides of the top plate 1 are welded and fixed, the angle steel 11 and the circular pipe 8 are welded and fixed on both sides of the top plate 1, the outer web 4 is welded and fixed on both sides of the top plate 1, the outer web 4 is welded and fixed on both sides of the top plate 1, and the angle steel 11 and the T-shaped longitudinal rib 6 are welded and fixed on the top of the three hollow web plates 5. At this time, the top plate 1 is welded and fixed from the top.

[0025] The bottom plate 2 is placed on the top of the three hollow web plates 5 and is temporarily fixed and connected by spot welding, thereby forming a steel box unit with a three-box-hole cross section. Figure 5 Figure 4 The bottom plate 2 is welded and fixed from the top.

[0026] In the prefabrication process of the steel box unit, the top plate 1 is in a down state, the middle web 3, the outer web 4 and the hollow web plate 5 are welded and fixed from the top, and the bottom plate 2 is spot welded; the steel box unit is turned over, the top plate 1 is in an up state, the bottom plate 2 and the hollow web plate 5 are welded and fixed from the top in the space of the hollow web plate 5, and the problem that the top plate bottom and the web plate, the side sealing plate top connection need to be welded from the top when welding in the channel is solved, and the labor intensity of the welding operation from the top is avoided. ​​

[0027] The assembling steps of the berthing pontoon are as follows.

[0028] The prefabricated steel box units are transported to the wharf site by vehicles, and multiple steel box units are assembled to form a large berthing pontoon, as shown in Figure 1 、 Figure 6 The top plate 1, the bottom plate 2, and the outer web plate 4 between the steel box units are fixed and installed by groove welding; at this time, the transversely distributed solid web partition plate 10 is welded and fixed in the middle of the berthing pontoon, and the angle steel 11 longitudinally arranged on the outer periphery of the hollow web partition plate 5 penetrates the solid web partition plate 10, as shown in Figures 7 to 8 The end closure plate 12 is welded and fixed at both ends of the berthing pontoon, the waist plate 13 is welded and fixed in the middle of the end closure plate 12 and the solid web partition plate 10, and the vertically distributed angle steel 11 on the waist plate 13 is welded and fixed to the upper and lower ends of the angle steel 11 longitudinally penetrating the solid web partition plate 10, as shown in Figures 6 to 8 The solid web partition plate 10 separates the middle web plate 3 and the outer web plate 4 between the steel box units.

[0029] The solid web partition plates 10 in the berthing pontoon and between the solid web partition plate 10 and the end closure plate 12 form independent communication spaces, as shown in Figure 6 The concrete is poured into the communication spaces, and the berthing pontoon has a certain draft depth after being launched into the sea. The counterweight is installed in the berthing pontoon to adjust the draft depth and the water balance.

[0030] The outer web plate 4 at each corner of the berthing pontoon has a draft scale line 14 with a length of more than 3m, Figure 4 as shown, which is used to observe the draft depth of the berthing pontoon after being launched into the sea.

[0031] The joint seams of the top plate 1, the bottom plate 2, and the outer web plate 4 between the steel box units present a staggered joint structure, as shown in Figure 2 、 Figure 3 The top plate 1 of the previous steel box unit is welded to the top surface of the outer web plate 4 of the subsequent steel box unit, and the bottom plate 2 of the subsequent steel box unit is welded to the bottom surface of the outer web plate 4 of the previous steel box unit, so that the joint seams of the top plate 1, the outer web plate 4, and the bottom plate 2 present a staggered joint structure.

[0032] The steel box unit combination structure of the large berthing pontoon of the present application comprises: The bottom plate 2 and the top plate 1, the outer web plate 4 on both sides of the bottom plate 2, and the outer web plate 4 welded and fixed to the top plate 1 and the bottom plate 2.

[0033] The two spaced-apart middle web plates 3 between the outer web plates 4, and the middle web plates 3 welded and fixed to the top plate 1 and the bottom plate 2.

[0034] The hollow web plates 5 between the middle webs 3 and the hollow web plates 5 between the middle webs 3 and the outer webs 4 are welded and fixedly installed, the circular pipes 8 are welded and fixedly installed in the hollow web plates 5, the vertical columns 7 are welded and fixedly installed in the middle part of the middle hollow web plate 5, and the T-shaped longitudinal ribs 6 are welded and fixedly installed on the vertical columns 7.

[0035] The hollow web plates 5 between the middle webs 3 are hollow annular plates, and the hollow web plates 5 between the middle webs 3 and the outer webs 4 are C-shaped hollow annular plates. Figures 4 to 5

[0036] The angle steels 11 are welded and fixedly installed on the outer periphery of the hollow web plates 5, and the force borne by the box body is transmitted to the hollow web plates 5 to be dispersed.

[0037] The steel box of the present application transmits and disperses the force borne by the box body through the hollow web plates 5 and the angle steels 11 distributed on the outer periphery of the hollow web plates 5, thereby solving the problem that the force cannot be uniformly borne at each part of the box body when the force is borne at a local part of the box body.

[0038] After the steel box units are prefabricated, the steel box units need to be hoisted and spliced after being transported from the prefabrication plant to the wharf. The existing box body shown in Chinese Patent No. CN207311773U is provided with lifting lugs on the top plate to meet the hoisting requirement, which is not conducive to the transportation of the steel box units through the limited-height transportation road.

[0039] The lifting lug structure of the present application includes: The lifting lug plate 15 is fixed on the middle web 3, the lifting lug plate 15 is provided with a lifting hole to be connected with a cable or a hook on the cable, the top plate 1 at the upper part of the lifting lug plate 15 is provided with a cable passing hole 16 for the cable to enter, the lifting lug plate 15 is welded and fixed on the middle web 3 through a reinforcing plate 17, and the lifting lug plate 15 is provided with a lifting lug 14. Figure 9 、 Figure 4

[0040] The reinforcing seat 18 larger than the lifting lug plate 15 is welded and fixed on the middle web 3 at the back of the lifting lug plate 15 to increase the deformation resistance of the back of the middle web 3.

[0041] The top plate 1 and the bottom plate 2 are welded and fixed on the middle web 3 in correspondence with the top plate 1 and the bottom plate 2, the outer web 4 is arranged on the outer side of the middle web 3, the outer web 4 is welded and fixed on the top plate 1 and the bottom plate 2 in correspondence with the top plate 1 and the bottom plate 2, and the top plate 1, the bottom plate 2, the middle web 3 and the outer web 4 form a steel box unit with a three-box-hole structure.

[0042] The lifting lug plate 15 is arranged on the middle web 3 between the top plate 1 and the bottom plate 2, the middle web 3 does not occupy the height dimension of the steel box unit, the steel box unit can be manufactured with the maximum height of the transportation road during prefabrication, and the problem that the lifting lug on the top plate is not conducive to the transportation of the steel box unit through the limited-height transportation road is solved. ​​

[0043] The top plate 1 near the cable passing hole 16 is provided with a manhole, and the top plate 1 at the manhole is provided with an openable cover plate 19. The middle web plate 3 below the manhole is provided with a ladder 20, as shown in Figure 4 When pouring concrete into the internal space of the steel box unit combined structure of the large-scale berthing float, the concrete pump pipe is inserted from the manhole, the internal gas is exhausted from the cable passing hole 16, the air containing dust in the berthing float is quickly exhausted, and after the pouring of concrete is completed, the cable passing hole 16 is sealed and welded with a steel plate, so that Figure 1 The cable passing hole 16 is not shown in the middle.

[0044] When the berthing float is moored to the wharf, a buffer is needed to avoid hard collision between the berthing float and the wharf. The prior art (see Chinese Patent Publication No. CN119975707A) installs a flexible marine fender to provide elastic buffer to avoid collision. When the side edge of the berthing float is an outer web plate with relatively thin thickness, the local stress of the outer web plate is prone to cause local indentation deformation.

[0045] The fender structure of the berthing float of the present application comprises: A plurality of steel box units constitute the berthing float, a support is welded and fixedly installed on the outer web plate 4 of the steel box unit, and a rubber body 26 is adhesively and fixedly connected to the support. The rubber body 26 and the support constitute the fender structure providing elastic buffer on the outer web plate 4 of the berthing float.

[0046] The support is composed of vertical plates 22, longitudinal plates 23 and mounting face plates 21. A plurality of vertical plates 22 and a plurality of longitudinal plates 23 are perpendicularly and alternately welded and fixed, and the plurality of vertical plates 22 and the plurality of longitudinal plates 23 are fixedly contacted with the outer web plate 4 at multiple positions. The mounting face plates 21 are welded and fixed on the vertical plates 22 and the longitudinal plates 23, and the rubber body 26 is fixed on the mounting face plates 21. See Figure 4 、 Figure 1 . Figure 1 A plurality of fender structures are shown on the left side in the middle, and the fender structures are located on the peripheral side edge of the berthing float, which can be set as needed.

[0047] The power ship pulls the berthing float through the tow cable connection at the tow cable point 25, and when the berthing float approaches the wharf, the rubber body 26 is contacted and collided with the wharf when the mooring cable is wound around the bitt 24 on the berthing float and connected with the wharf. The collision force received by the rubber body 26 is dispersed and transmitted to the outer web plate 4 through multiple vertical and alternate vertical plates 22 and multiple longitudinal plates 23 at multiple positions through the mounting face plates 21, thereby solving the problem of local indentation deformation of the outer web plate under local stress.

Claims

1. A steel box unit combination structure of a large berthing pontoon, characterized in that: include: A steel box unit for distributing force through a plurality of angle steels (11); The steel box unit comprises: A bottom plate (2) and a top plate (1), with outer webs (4) on both sides of the bottom plate (2), and the outer webs (4) are welded and fixed to the top plate (1) and the bottom plate (2) in correspondence with each other; There are two intermediate webs (3) spaced apart between the outer webs (4), and the intermediate webs (3) are welded and fixed to the top plate (1) and the bottom plate (2) in correspondence with each other. Hollow web partitions (5) are welded and fixedly installed between the middle webs (3) and between the middle webs (3) and the outer webs (4).

2. The steel box unit assembly structure of a large-scale mooring pontoon according to claim 1, characterized in that: Angle steels (11) are welded and fixedly installed at intervals on the periphery of the hollow partition (5), and the angle steels (11) transfer the forces borne by various parts of the box to the hollow partition (5) for dispersion.

3. The steel box unit assembly structure of a large-scale mooring pontoon according to claim 2, characterized in that: A circular tube (8) is welded and fixedly installed inside the hollow partition (5), a column (7) is welded and fixedly installed in the middle of the hollow partition (5), and T-shaped longitudinal ribs (6) are welded and fixedly installed on the upper and lower parts of the column (7).

4. The steel box unit assembly structure of a large-scale mooring pontoon according to claim 1, characterized in that: A lifting lug plate (15) is fixed on the middle web plate (3), and the lifting lug plate (15) is provided with a lifting hole; the top plate (1) above the lifting lug plate (15) is provided with a cable hole (16) for the cable to enter.

5. The steel box unit assembly structure of a large-scale mooring pontoon according to claim 4, characterized in that: The top plate (1) near the cable hole (16) is provided with a manhole, the top plate (1) at the manhole is installed with an openable cover plate (19), and the middle web (3) below the manhole is provided with a ladder (20).

6. The steel box unit assembly structure of a large-scale mooring pontoon according to claim 1, characterized in that: A bracket is fixedly mounted on the outside of the outer web (4), a rubber body (26) is fixedly connected to the bracket, and the rubber body (26) and the bracket form a fender structure providing elastic buffering on the outer web (4) of the mooring buoy.

7. The steel box unit assembly structure of a large-scale mooring pontoon according to claim 6, characterized in that: The bracket is composed of a vertical plate (22), a longitudinal plate (23), and a mounting panel (21); a plurality of vertical plates (22) and a plurality of longitudinal plates (23) are welded and fixed vertically and staggered; the plurality of vertical plates (22) and the plurality of longitudinal plates (23) are in fixed contact with the outer web (4) at multiple locations; the mounting panel (21) is welded and fixed to the vertical plates (22) and the longitudinal plates (23); and the rubber body (26) is fixed to the mounting panel (21).

8. The steel box unit assembly structure of a large-scale mooring pontoon according to claim 1, characterized in that: The hollow partitions (5) between the middle webs (3) are hollow annular plates; and the hollow partitions (5) between the middle webs (3) and the outer webs (4) are C-shaped hollow annular plates.

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