Steel box girder stacking structure of transport ship

Abstract

The steel box girder stacking structure of the transport ship comprises an upper-layer girder and a lower-layer girder, a first supporting seat supported on a deck of the transport ship is arranged at the bottom of the lower-layer girder, and a second supporting seat supported between the upper-layer girder and the lower-layer girder is arranged between the upper-layer girder and the lower-layer girder. Thrust pieces used for limiting relative displacement of the upper-layer beam and the lower-layer beam are arranged on the two longitudinal sides of the steel box beam between the upper-layer beam and the lower-layer beam. The two layers of steel box girders are stacked, the vertical space is reasonably utilized to reduce the occupation of the horizontal space, so that the transportation efficiency of the transport ship can be improved, meanwhile, the relative displacement between the steel box girders and between the steel box girders and the deck of the transport ship can be limited through the thrust pieces and the limiting blocking frames, and the transportation efficiency of the transport ship is improved. The stability of the stacked steel box girders in the transportation process is ensured, the transportation frequency can be reduced while the transportation efficiency is improved, the transportation cost is reduced, and the transportation safety is high.

Description

Technical Field

[0001] The present application relates to the technical field of bridge construction, and in particular to a steel box girder stacking structure for a transport ship. Background Art

[0002] Steel box girders are the primary components of steel bridges. Due to their enormous size, large steel box girders are limited in transportation by rail and road, forcing them to be transported by water. This is typically accomplished by ship, but safety is a major concern. To ensure this, single-layer transport is currently employed. This not only results in high transportation costs but also often hinders project completion times due to the inability to find sufficient ships of appropriate specifications. As steel box girder designs become increasingly larger, addressing transportation challenges and controlling costs have become key challenges and challenges in their construction. Utility Model Content

[0003] The purpose of this application is to provide a steel box girder stacking structure for a transport ship that can improve transportation efficiency, reduce transportation times, and lower transportation costs.

[0004] In order to achieve the above objectives, this application provides the following technical solutions:

[0005] A steel box girder stacking structure for a transport ship includes an upper beam and a lower beam. A first support seat is provided at the bottom of the lower beam and is supported on the deck of the transport ship. A second support seat is provided between the upper beam and the lower beam and is supported therebetween. Thrust members are provided on both sides of the steel box girder between the upper beam and the lower beam in the longitudinal direction to limit relative displacement between the two.

[0006] It is further configured that: multiple groups of the first support seats are provided along the transverse direction of the steel box beam, and the multiple groups of the first support seats are axially symmetrically distributed with the transverse center line of the steel box beam as the symmetry axis, and multiple first support seats are provided in each group along the longitudinal direction of the steel box beam.

[0007] It is further configured that multiple groups of the second support seats are provided along the transverse direction of the steel box girder, the multiple groups of the second support seats are axially symmetrically distributed with the transverse center line of the steel box girder as the symmetry axis, and each group of the second support seats is provided with multiple groups along the longitudinal direction of the steel box girder.

[0008] It is further provided that the end surfaces of the first support seat and the second support seat for contacting the steel box girder are provided with damping members.

[0009] It is further provided that: the thrust member comprises a seamless steel pipe, the top of the seamless steel pipe is welded to the bottom surface of the upper beam through a cross-shaped supporting bracket, and the bottom thereof abuts against the upper surface of the lower beam.

[0010] It is further provided that the thrust member also includes a reinforcing rod connected between the outer side wall of the seamless steel pipe and the bottom surface of the upper beam and arranged obliquely relative to the seamless steel pipe, and the end of the reinforcing rod away from the seamless steel pipe is welded to the upper beam.

[0011] It is further provided that: a plurality of thrust members are provided along the longitudinal direction of the steel box beam.

[0012] Further configuration: it also includes a transverse limit block and a longitudinal limit block provided on the deck of the transport ship, the transverse limit block is provided along the transverse direction of the transport ship and is located on both sides of the lower beam along its longitudinal direction, and the longitudinal limit block is provided along the longitudinal direction of the transport ship and is located at both ends of the lower beam along its longitudinal direction.

[0013] It is further configured that a plurality of transverse limit blocks are provided along the transverse direction of the transport ship, and the transverse limit blocks include L-shaped I-beam thrust frames.

[0014] It is further provided that: a plurality of longitudinal limit blocks are provided along the longitudinal direction of the transport ship, and the longitudinal limit blocks include a herringbone-shaped I-beam thrust frame.

[0015] Compared with the existing technology, the solution of this application has the following advantages:

[0016] The steel box girder stacking structure of the transport ship involved in this application stacks two layers of steel box girders, rationally utilizes vertical space to reduce the occupation of horizontal space, thereby improving the transportation efficiency of the transport ship. At the same time, the thrust members and limit blocks can limit the relative displacement between the steel box girders and between the steel box girder and the deck of the transport ship, ensuring the stability of the stacked steel box girders during transportation. While improving transportation efficiency, it can reduce the number of transportations, reduce transportation costs, and have high transportation safety.

[0017] Additional aspects and advantages of the present application will be given in part in the following description, which will become apparent from the following description, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 A schematic diagram of the longitudinal structure of the transport ship in this application, which is a stacked steel box girder structure;

[0020] Figure 2 A schematic diagram of the transverse structure of the transport ship in this application, which is a stacked steel box girder structure;

[0021] Figure 3 This is a schematic diagram of the structure of the thrust piece in the stacked steel box girder structure of the transport ship in this application;

[0022] Figure 4 This is the deck layout of the transport ship in the steel box girder stacking structure of the transport ship in this application.

[0023] In the figure, 1. upper beam; 2. lower beam; 3. first support seat; 4. second support seat; 5. thrust piece; 51. seamless steel pipe; 52. cross-shaped support bracket; 53. bottom bracket; 54. reinforcing rod; 6. transverse limit block; 7. longitudinal limit block. DETAILED DESCRIPTION

[0024] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and are not to be construed as limiting the present application.

[0025] Aiming at the problem that the current transport ship adopts a single-layer scheme to transport steel box beams, which leads to increased transportation costs and low transportation efficiency, this application provides a steel box beam stacking structure for transport ships. Figures 1 to 4 By dividing the steel box girder into an upper beam 1 and a lower beam 2 and stacking them, the vertical space can be fully utilized and excessive horizontal space can be avoided. It is suitable for water transportation of steel box girders with limited deck area of ​​transport ships, and can effectively improve transportation efficiency, reduce the number of transportations, and reduce transportation costs.

[0026] The stacking structure of the steel box beams of the transport ship of the present application includes an upper beam 1 and a lower beam 2 for stacking. The bottom of the lower beam 2 is supported on a first support seat 3 fixed to the deck of the transport ship. A second support seat 4 is provided between the top surface of the lower beam 2 and the bottom of the upper beam 1. The upper beam 1, the lower beam 2 and the deck of the transport ship are separated by the first support seat 3 and the second support seat 4 to facilitate the transportation of the upper beam 1 and the lower beam 2. At the same time, a thrust piece 5 is provided between the upper beam 1 and the lower beam 2 to connect the two. The thrust piece 5 is provided on both sides along the longitudinal direction of the steel box beam. The thrust piece 5 is used to limit the relative displacement between the upper beam 1 and the lower beam 2, so as to improve the stability of the double-layer transport steel box beam of the present application.

[0027] It should be noted that the upper beam 1 and the lower beam 2 in this embodiment are both steel box beams, which are formed by fully welding structures such as a top plate, a bottom plate, a web, a transverse diaphragm, a longitudinal diaphragm and stiffening ribs, and the steel box beam has a cantilever structure formed on both sides of its longitudinal direction. The transverse direction of the steel box beam in this embodiment is arranged along the longitudinal direction of the transport ship. According to the transverse and longitudinal dimensions of the transport ship and the specifications of the steel box beams to be transported, at least one group of double-layer stacked steel box beam structures can be arranged along the transverse or longitudinal direction of the transport ship. The longitudinal length of the upper beam 1 of each group of double-layer stacked steel box beam structures is less than the longitudinal length of the lower beam 2, and the transverse length of the upper beam 1 is not greater than the transverse length of the lower beam 2.

[0028] Specifically, in each set of double-layer stacked steel box girder structures, multiple sets of first support seats 3 and second support seats 4 are provided along the transverse direction of the steel box girder, wherein the multiple sets of first support seats 3 are axially symmetrically distributed with the transverse center line of the lower beam 2 as the axis of symmetry, so that the steel box girder is subjected to uniform support force from the multiple sets of first support seats 3, thereby ensuring the support stability of the steel box girder by the first support seats 3, and multiple sets of each set of first support seats 3 are evenly provided along the longitudinal direction of the steel box girder. Similarly, multiple sets of second support seats 4 are axially symmetrically distributed with the transverse center line of the upper beam 1 as the axis of symmetry, thereby ensuring uniform force between the upper beam 1 and the lower beam 2, and multiple sets of each set of second support seats 4 are evenly provided along the longitudinal direction of the upper beam 1. When specifically provided on a transport ship, the first support seats 3 and the second support seats 4 are provided as much as possible at the strong frame of the steel box girder at the longitudinal and transverse strong members of the transport ship's deck to ensure the support capacity of the support seats for the steel box girder.

[0029] Furthermore, the end surfaces of the first support seat 3 and the second support seat 4 that are in contact with the steel box girder are both provided with damping members. The first support seat 3 is fixed on the deck of the transport ship, and the damping member is arranged on the top surface of the first support seat 3. The second support seat 4 is not fixedly connected to the upper beam 1 and the lower beam 2. Therefore, damping members are arranged on the top and bottom surfaces of the second support seat 4. The damping members can not only protect the contact area between the steel box girder and the support seat, but also increase the friction coefficient between the support seat and the steel box girder to further suppress the displacement of the steel box girder and the support seat. In addition, since there is a beam arch on the upper surface of the steel box girder, the second support seat 4 is arranged between the upper beam 1 and the lower beam 2. The bottom of the second support seat 4 needs to be provided with a wedge-shaped wooden pad or other structure for leveling to ensure that the support seat is evenly stressed.

[0030] In addition, due to the strong wind and waves at sea, the steel box girder needs to be limited longitudinally and transversely. The present application limits the steel box girder by setting a thrust piece 5 and a limit stop frame, wherein the thrust piece 5 is arranged between the upper beam 1 and the lower beam 2. The thrust cylinder type of this embodiment includes a seamless steel pipe 51. The top of the seamless steel pipe 51 is effectively welded to the upper beam 1 through a cross-shaped support elbow plate 52 and becomes a whole. The bottom of the seamless steel pipe 51 falls and abuts against the upper surface of the lower beam 2. At the same time, a bottom elbow plate 53 is provided at the bottom of the seamless steel pipe 51. The bottom elbow plate 53 is used to realize the stopping and limiting between the seamless steel pipe 51 and the lower beam 2 to prevent relative transverse and longitudinal displacement between the upper beam 1 and the lower beam 2. By setting the thrust piece 5 to limit the relative displacement of the upper beam 1 and the lower beam 2, it can be ensured that all the support seats are in close contact with the supported steel box beam, ensuring that each support seat can bear the load evenly, while avoiding the concentrated load on individual support seats, which may cause local concave and convex deformation at the support point of the steel box beam.

[0031] Furthermore, the thrust member 5 includes a reinforcing rod 54 connected between the outer wall of the seamless steel tube 51 and the bottom surface of the upper beam 1. The reinforcing rod 54 is arranged at an angle relative to the seamless steel tube 51, forming a triangle at the bottom of the upper beam 1 and between the reinforcing rod 54 and the seamless steel tube 51. This improves the stability of the connection between the thrust member 5 and the steel box girder. In this embodiment, multiple thrust members 5 are evenly distributed along the longitudinal direction of the upper beam 1 to ensure a stable connection between the upper beam 1 and the lower beam 2.

[0032] The limit stops are primarily used to limit displacement of the lower beam 2 relative to the ship's deck. The limit stops in this application include transverse limit stops 6 and longitudinal limit stops 7, installed on the ship's deck. The transverse limit stops 6 are located on either side of the lower beam 2 along its longitudinal direction, while the longitudinal limit stops 7 are located at both ends of the lower beam 2 along its longitudinal direction. Multiple transverse limit stops 6 are provided along the ship's transverse direction, each utilizing an L-shaped I-beam thrust bracket, with its bottom welded to the ship's deck. These limit stops are located at the deck's transverse beams or structural frames to prevent localized deformation of the deck at beam support points. Multiple longitudinal limit stops 7 are located along the ship's longitudinal direction, each utilizing a herringbone-shaped I-beam thrust bracket, with its bottom welded to the ship's deck. Their placement at the ship's deck's longitudinal beams or longitudinals facilitates load dissipation, thereby increasing the deck's load-bearing capacity per unit area.

[0033] In summary, the stacked steel box girder structure of the transport ship of the present application stacks two layers of steel box girders, rationally utilizing vertical space to reduce the occupation of horizontal space, thereby improving the transport efficiency of the transport ship. At the same time, the thrust member 5 and the limit stop frame can limit the relative displacement between the steel box girders and between the steel box girder and the deck of the transport ship, ensuring the stability of the stacked steel box girders during transportation. While improving transportation efficiency, it can also reduce the number of transportations, reduce transportation costs, and improve transportation safety. The above description is only a partial embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made, and these improvements and modifications should also be considered as the scope of protection of the present application.

Claims

1. A steel box girder stacking structure for a transport ship, comprising an upper beam and a lower beam, characterized in that: A first support seat supported on the deck of the transport ship is provided at the bottom of the lower beam, a second support seat supported between the upper beam and the lower beam is provided, and thrust pieces for limiting the relative displacement between the upper beam and the lower beam are provided on both sides of the longitudinal direction of the steel box beam.

2. The steel box girder stacking structure of a transport ship according to claim 1, characterized in that: The first support seats are provided in multiple groups along the transverse direction of the steel box beam. The multiple groups of the first support seats are symmetrically distributed with the transverse center line of the steel box beam as the symmetry axis. Each group of the first support seats is provided in multiple groups along the longitudinal direction of the steel box beam.

3. The steel box girder stacking structure of a transport ship according to claim 1, characterized in that: The second support seats are provided in multiple groups along the transverse direction of the steel box girder. The multiple groups of the second support seats are symmetrically distributed with the transverse center line of the steel box girder as the symmetry axis, and each group of the second support seats is provided in multiple groups along the longitudinal direction of the steel box girder.

4. The steel box girder stacking structure of a transport ship according to claim 1, characterized in that: The end surfaces of the first support seat and the second support seat that are used for contacting the steel box girder are provided with damping members.

5. The steel box girder stacking structure of a transport ship according to claim 1, characterized in that: The thrust member comprises a seamless steel pipe, the top of which is welded to the bottom surface of the upper beam via a cross-shaped supporting bracket, and the bottom of which abuts against the upper surface of the lower beam.

6. The steel box girder stacking structure of a transport ship according to claim 5, characterized in that: The thrust piece also includes a reinforcing rod connected between the outer side wall of the seamless steel pipe and the bottom surface of the upper beam and arranged obliquely relative to the seamless steel pipe. The end of the reinforcing rod away from the seamless steel pipe is welded to the upper beam.

7. The steel box girder stacking structure of a transport ship according to claim 6, characterized in that: A plurality of thrust members are provided along the longitudinal direction of the steel box girder.

8. The steel box girder stacking structure of a transport ship according to claim 1, characterized in that: It also includes a transverse limit block and a longitudinal limit block provided on the deck of the transport ship. The transverse limit block is arranged along the transverse direction of the transport ship and is located on both sides of the lower beam along its longitudinal direction. The longitudinal limit block is arranged along the longitudinal direction of the transport ship and is located at both ends of the lower beam along its longitudinal direction.

9. The steel box girder stacking structure of a transport ship according to claim 8, characterized in that: A plurality of transverse limit blocks are provided along the transverse direction of the transport ship, and the transverse limit blocks include L-shaped I-beam thrust frames.

10. The steel box girder stacking structure of a transport ship according to claim 8, characterized in that: A plurality of longitudinal limit blocks are provided along the longitudinal direction of the transport ship, and the longitudinal limit blocks include a herringbone-shaped I-steel thrust frame.

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