Steel box girder floating transportation device

Abstract

The utility model discloses a steel box girder floating transportation device which comprises a floating platform and a bearing frame. The floating platform comprises a plurality of steel floating boxes, and a pumping and filling opening is formed in the top of each steel floating box; the bearing frame comprises a chassis and a support fixedly arranged above the chassis, the chassis is erected on the floating platform, the chassis comprises bottom longitudinal beams and bottom cross beams which are arranged in a staggered mode, the two ends of the bottom longitudinal beams and / or the bottom cross beams extend out of the floating platform, first limiting blocks are arranged at the bottoms of the bottom longitudinal beams and / or the bottom cross beams, and the first limiting blocks are located on the side faces of the floating platform; the support comprises a plurality of supporting stand columns, and the top ends of the supporting stand columns are used for supporting steel box girders. A plurality of second limiting blocks distributed on the outer sides of the supporting stand columns are welded to the bottom of the steel box girder. When the steel box girder needs to be hoisted from the floating transportation device, due to the fact that complex fixed connection does not exist between the steel box girder and the bearing frame, only hoisting equipment needs to be used for directly hoisting the steel box girder, operation is easy and fast, and tedious dismounting work does not need to be carried out.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction equipment technology, and in particular to a steel box girder floating device. Background Technology

[0002] In the field of modern bridge engineering, precast steel box girder bridges have become an important bridge structure for spanning large bodies of water such as rivers, lakes, and seas due to their superior structural performance, short construction period, and minimal environmental impact. The assembly of precast steel box girder bridges typically employs a combination of phased, segmental prefabrication and on-site assembly. After prefabrication, the steel box girder segments need to be transported from the prefabrication site to the bridge construction site using water transport. The conventional approach is to utilize large barges and other heavy-duty vessels, leveraging the advantages of river transport, to smoothly and efficiently transport the steel box girder segments to the designated location, creating conditions for subsequent hoisting and assembly operations.

[0003] However, in practical engineering applications, some rivers have special geographical and hydrological conditions that limit their operation, and some bridge construction sites have limited surrounding space, lacking sufficient turning areas and mooring areas, making it difficult for large heavy-duty vessels to approach the construction site for loading and unloading operations. Therefore, existing technologies involve fabricating buoyancy transport devices with floating platforms. After the steel box girder is fixed to the buoyancy transport device, a small boat or cable is used to pull the buoyancy transport device, moving the steel box girder to the hoisting area. To ensure the stable placement of the steel box girder on the buoyancy transport device, a complex connection structure is usually designed between the steel box girder and the buoyancy transport device. When hoisting the steel box girder, the connection between the steel box girder and the buoyancy transport device must be disconnected first, resulting in low hoisting efficiency. In addition, the existing buoyancy transport devices have relatively complex structures and are inconvenient to assemble. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a steel box girder floating device with a simple structure and convenient hoisting construction.

[0005] The solution provided by this utility model includes:

[0006] A steel box girder floating device, comprising:

[0007] Floating platform and support frame;

[0008] The floating platform includes multiple steel pontoons, and each steel pontoon is equipped with an injection port on its top.

[0009] The bearing frame comprises a chassis and a support fixed above the chassis, the chassis is arranged on the floating platform, the chassis comprises staggered bottom longitudinal beams and bottom transverse beams, both ends of the bottom longitudinal beams and / or the bottom transverse beams extend out of the floating platform, and the bottom longitudinal beams and / or the bottom transverse beams are provided with first limiting blocks at the bottom, and the first limiting blocks are located at the side of the floating platform; the support comprises a plurality of support columns, and the top end of the support column is used for supporting the steel box girder.

[0010] The bottom of the steel box girder is welded with a plurality of second limiting blocks distributed outside the support columns.

[0011] As a further optional solution, the top of the adjacent steel floating box is welded by a first lap plate;

[0012] The bottom of the adjacent steel floating box is welded by a second lap plate;

[0013] The floating platform further comprises a steel belt bundled on the outer circumferential side.

[0014] As a further optional solution, the support column is arranged at the staggered position of the bottom longitudinal beam and the bottom transverse beam, and the support column is welded with the chassis;

[0015] The support further comprises a connecting truss arranged between two adjacent support columns, and the connecting truss is welded with the support column.

[0016] As a further optional solution, the support further comprises a diagonal brace, one end of the diagonal brace is welded with the support column, and the other end is welded with the bottom longitudinal beam or the bottom transverse beam.

[0017] As a further optional solution, the connecting truss is welded with the chassis.

[0018] As a further optional solution, the support column is provided with n+2, where n is a complex number and a positive integer;

[0019] The adjacent four support columns and the connecting truss form a square frame structure.

[0020] Compared with the prior art, the steel box girder floating device of the present application has at least the following beneficial effects:

[0021] 1. Convenient and efficient assembly: the bearing frame is only arranged on the floating platform, and the complex fixed connection structure is abandoned, which greatly simplifies the assembly process. By arranging the first limiting block at the end of the bottom longitudinal beam and / or the bottom transverse beam of the chassis and locating it at the side of the floating platform, the sliding of the bearing frame on the floating platform is effectively prevented. Compared with the assembly method requiring a large number of bolt connections or fixed welding, the assembly process of the device does not need complicated operation;

[0022] 2. The steel box girder is simple to load and unload and convenient to hoist: the steel box girder is only erected on the bearing frame, a plurality of second limiting blocks distributed outside the support column are welded at the bottom of the steel box girder, the steel box girder is prevented from slipping during transportation through the limiting cooperation between the second limiting blocks and the support column. When the steel box girder needs to be lifted from the floating device, since there is no complex fixed connection between the steel box girder and the bearing frame, the steel box girder can be directly lifted by using hoisting equipment, and the operation is simple and fast, and complicated disassembly work is not needed. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic view of a steel box girder floating device according to an embodiment of the present application;

[0024] Figure 2 is an exploded schematic view of a steel box girder floating device according to an embodiment of the present application;

[0025] Figure 3 is a side view schematic view of a steel box girder floating device when carrying a steel box girder according to an embodiment of the present application;

[0026] Figure 4 is a structural schematic view of a steel box girder floating device when carrying a steel box girder according to an embodiment of the present application;

[0027] Figure 5 is a cooperation schematic view of a second limiting block and a support column according to an embodiment of the present application;

[0028] In the drawing: 100, steel box girder;

[0029] 1, floating platform; 11, steel floating box; 12, steel belt;

[0030] 2, bearing frame; 21, bottom disc; 211, bottom cross beam; 212, bottom longitudinal beam; 213, first limiting block; 22, support; 221, support column; 222, connecting truss; 223, inclined strut;

[0031] 3, second limiting block. DETAILED DESCRIPTION

[0032] The specific embodiments of the present application will be further described in detail below in combination with the drawings and embodiments. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0033] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

[0034] In the utility model, unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled persons in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0035] In the utility model, unless otherwise expressly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be indirectly contacted through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0036] Reference Figures 1-5 An embodiment of the utility model shows a kind of steel box girder floating device, including float 1 and bearing frame 2, the float 1 includes multiple steel floating box 11, the top of each steel floating box 11 is equipped with pumping and pumping port (not shown);The bearing frame 2 includes bottom disc 21 and the support 22 fixedly arranged above the bottom disc 21, the bottom disc 21 is arranged on the float 1, the bottom disc 21 includes staggered bottom longitudinal beam 212 and bottom cross beam 211, the two ends of the bottom longitudinal beam 212 and / or bottom cross beam 211 extend outside the float 1, and first limit block 213 is provided at the bottom thereof, and the first limit block 213 is located at the side of the float 1;The support 22 includes multiple support columns 221, and the top end of the support column 221 is used to support steel box girder 100;The bottom of the steel box girder 100 is welded with multiple second limit blocks 3 distributed outside the support column 221.

[0037] Specifically, as Figure 2 And Figure 3The first limiting block 213 is welded at the bottom of the bottom cross beam 211 extending out of the floating platform 1, and two first limiting blocks 213 are arranged on the two sides of the floating platform 1 respectively, thereby preventing the carrier frame 2 from slipping on the floating platform 1; in actual application, the fluctuation of the river flow direction is generally large, that is, the fluctuation of the front and back directions of the steel box girder 100 is large when the steel box girder 100 moves, so the first limiting block 213 can be arranged on the bottom cross beam 211 or the bottom longitudinal beam 212 to limit the slip of the steel box girder 100 in the front and back directions; of course, the most ideal method is to arrange the first limiting block 213 on the bottom cross beam 211 and the bottom longitudinal beam 212 to limit the slip of the steel box girder 100 in the front and back and left and right directions.

[0038] The pumping and pumping ports on the steel floating box 11 can be used for pumping and pumping, thereby adjusting the draft depth and buoyancy of the steel floating box 11; specifically, when assembling, the prefabricated steel box girder 100 is moved above the floating device by using a track or a lifting device, then the water in the steel floating box 11 can be pumped out to raise the floating platform 1, and the top end of the supporting column 221 is supported on the bottom of the steel box girder 100; then the second limiting block 3 is welded on the bottom of the steel box girder 100, as shown in Figure 5 The second limiting block 3 is arranged on the outside of the supporting column 221, so that the steel box girder 100 cannot slip on the carrier frame 2. After the steel box girder 100 is loaded on the floating device, the floating device can be towed to the hoisting area by a boat or a cable, and the hoisting equipment can directly lift the steel box girder 100.

[0039] In this way, the carrier frame 2 is only erected on the floating platform 1, and the complex fixed connection structure is abandoned, greatly simplifying the assembly process. By arranging the first limiting block 213 at the end of the bottom longitudinal beam 212 and / or the bottom cross beam 211 of the bottom plate 21 and making it located on the side of the floating platform 1, the carrier frame 2 is effectively prevented from slipping on the floating platform 1. Compared with the assembly method which needs a large number of bolt connections or fixed welding, the assembly process of the device does not need complicated operation.

[0040] In addition, the steel box girder 100 is only erected on the carrier frame 2, and a plurality of second limiting blocks 3 distributed on the outside of the supporting column 221 are welded on the bottom of the steel box girder 100. By the limiting cooperation between the second limiting block 3 and the supporting column 221, the slip of the steel box girder 100 during transportation is prevented. When the steel box girder 100 needs to be lifted from the floating device, since there is no complex fixed connection between the steel box girder 100 and the carrier frame 2, only the steel box girder 100 needs to be directly lifted by the hoisting equipment, which is simple and fast, and does not need complicated disassembly work.

[0041] In the above scheme, the floating platform 1 is composed of a plurality of steel floating boxes 11, and the internal spaces of the plurality of steel floating boxes 11 are independent of each other, so that even if a small part of the steel floating boxes 11 is broken or leaks, the stable buoyancy of the floating platform 1 can be ensured.

[0042] In some embodiments, to ensure stable connection between the plurality of steel pontoons 11, the top of adjacent steel pontoons 11 are welded together by first lap plates (not shown); specifically, the first lap plate is a steel plate, one part of the first lap plate is welded to the upper surface of one steel pontoon 11, and the other part of the first lap plate is welded to the upper surface of another steel pontoon 11, thereby achieving connection between two adjacent steel pontoons 11.

[0043] In addition, the bottom of adjacent steel pontoons 11 are welded together by second lap plates (not shown); similarly, the second lap plate is connected in the same way as the first lap plate, except that the second lap plate is welded to the lower surface of the steel pontoon 11.

[0044] In addition, as shown in Figure 2 , the floating platform 1 further comprises a steel belt 12 tied around the outer periphery thereof. By enclosing the plurality of steel pontoons 11 with the steel belt 12, the plurality of steel pontoons 11 are further prevented from spreading apart, making the structure of the floating platform 1 more stable.

[0045] In some embodiments, to make the bearing stability of the bearing frame 2 higher, as shown in Figure 1 and Figure 2 , the support column 221 is arranged at the intersection of the bottom longitudinal beam 212 and the bottom transverse beam 211, and is welded to the bottom plate 21; arranging the support column 221 at the intersection of the bottom longitudinal beam 212 and the bottom transverse beam 211 makes full use of the structural advantages of the intersection of the longitudinal and transverse beams of the bottom plate 21, so that the support column 221 can more effectively transmit the upper load to the bottom plate 21 and form a close overall structure with the bottom plate 21. At the same time, the support column 221 is welded to the bottom plate 21, and the welding process can provide reliable connection strength, so that the support column 221 and the bottom plate 21 form a rigid connection node, further enhancing the overall rigidity of the entire bearing frame 2 structure. During the floating operation of the steel box girder 100, in the face of complex water flow impact, wind force, and the weight and inertia force of the steel box girder 100 itself, etc., the higher overall rigidity can effectively resist various deformations and vibrations, ensuring the stability of the floating device and reducing the risk of safety accidents caused by structural deformation.

[0046] Further, the support frame 22 further comprises a connecting truss 222, which is arranged between two adjacent support columns 221 and is welded with the support columns 221. The connecting truss 222 is arranged between two adjacent support columns 221 and is welded with the support columns 221, forming a spatial truss structure system. The truss structure has a high strength-weight ratio, which can significantly improve the carrying capacity and lateral force resistance of the support frame 22 without significantly increasing the self-weight of the structure. The connecting trusses 222 between adjacent support columns 221 work cooperatively to connect the support columns 221 into an organic whole, further enhancing the overall stability of the support frame 22 and effectively preventing excessive displacement or deformation of a single support column 221 under stress, thereby ensuring the safety and stability of the steel box girder 100 during floating.

[0047] Further, the connecting truss 222 can also be welded with the chassis 21 to improve the overall rigidity.

[0048] Further, as shown in Figure 1 and Figure 2 , the support frame 22 further comprises a diagonal brace 223, one end of which is welded to the support column 221, and the other end is welded to the bottom longitudinal beam 212 or the bottom transverse beam 211. The diagonal brace 223, the support column 221, the bottom longitudinal beam 212 or the bottom transverse beam 211 form a triangular stable structure, which enhances the ability of the structure to resist torsion.

[0049] In some embodiments, as shown in Figure 1 and Figure 2 , the support column 221 is provided with n+2, where n is a complex number and a positive integer; the adjacent four support columns 221 and the connecting truss 222 form a square frame structure.

[0050] Specifically, n can be 2, 4, 6, etc., i.e., the number of support columns 221 can be 4, 6, 8, etc. (and so on); the square frame structure formed by the adjacent four support columns 221 and the connecting truss 222 can directly resist lateral deformation through the axial rigidity of the truss bar, avoiding the "instability swing" prone to occur in a single support column 221. As shown in the present embodiment, the support columns 221 are provided with 6, forming two square frame structures; the multiple square frame structures are connected to each other to form a spatial truss system. When a certain square frame structure is loaded, the adjacent square frame structures can share the load and facilitate more evenly transmitting the load to the floating platform 1, significantly improving the overall stability.

[0051] In the above embodiments, the description of each embodiment focuses on different aspects, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0052] The above merely describes the preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and replacements can be made, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A steel box girder floating device, characterized in that, include: Floating platform and support frame; The floating platform includes multiple steel pontoons, and each steel pontoon is equipped with an injection port on its top. The support frame includes a chassis and a bracket fixedly mounted on the chassis. The chassis is mounted on the floating platform. The chassis includes staggered bottom longitudinal beams and bottom transverse beams. The two ends of the bottom longitudinal beams and / or bottom transverse beams extend beyond the floating platform, and a first limiting block is provided at the bottom of each beam. The first limiting block is located on the side of the floating platform. The bracket includes multiple supporting columns, and the top of each supporting column is used to support the steel box girder. The bottom of the steel box girder is welded with multiple second limiting blocks distributed on the outside of the supporting columns.

2. The steel box girder floating device according to claim 1, characterized in that: The tops of adjacent steel pontoons are welded together using a first lap plate; The bottoms of adjacent steel pontoons are welded together using a second lap plate; The floating platform also includes steel straps that are strapped to its outer periphery.

3. The steel box girder floating device according to claim 1, characterized in that: The supporting column is located at the intersection of the bottom longitudinal beam and the bottom transverse beam, and the supporting column is welded to the chassis; The support structure also includes a connecting truss, which is disposed between two adjacent support columns and is welded to the support columns.

4. The steel box girder floating device according to claim 3, characterized in that: The support also includes diagonal bracing rods, one end of which is welded to the support column and the other end of which is welded to the bottom longitudinal beam or the bottom transverse beam.

5. The steel box girder floating device according to claim 3, characterized in that: The connecting truss is welded to the chassis.

6. The steel box girder floating device according to claim 3, characterized in that: The supporting columns are provided in n+2 columns, where n is a complex number and a positive integer; the four adjacent supporting columns and the connecting truss form a square frame structure.

Images