Steel box girder pre-splicing jig frame

Abstract

The utility model discloses a steel box girder pre-splicing jig frame, which comprises a plurality of block group jig frames, each block group jig frame comprises a rectangular frame body, a support beam and a reinforced cant beam, the support beam is arranged at the top of the rectangular frame body, and two ends of the reinforced cant beam are respectively connected with a transverse beam and / or a vertical beam of the rectangular frame body; the block set jig frames are arranged in a rectangular array mode to form a block set jig frame group, the block set jig frame group comprises a middle block set jig frame group and outer side block set jig frame groups, the outer side block set jig frame groups are arranged on the two sides of the middle block set jig frame group, and trolley channels are arranged between the middle block set jig frame group and the outer side block set jig frame groups. The steel box girder pre-splicing device can achieve pre-splicing assembly of the steel box girder, facilitates pre-splicing detection of the steel box girder, and has the advantages of being high in splicing precision and pre-splicing efficiency, capable of being recycled, reducing steel loss, free of repeated hoisting and transferring, shortening the manufacturing period, reducing raw material cost and personnel management cost, improving manufacturing efficiency and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of mixed cable-stayed bridges, in particular to a pre-assembled frame of a steel box girder. Background Art

[0002] At present, most of the cable-stayed bridge towers in the world are made of concrete. Before the 21st century, the development of steel cable towers was restricted by factors such as complex construction technology, high cost, and inconvenient later maintenance. With the development of steel tower manufacturing technology and economy, steel cable towers have developed rapidly with their advantages such as excellent bearing capacity, good stability, good landscape effect and fast construction progress. Generally speaking, the deck of a cable-stayed bridge is supported by a steel box girder. During the construction of a bridge project, due to the load capacity of engineering equipment, steel box girders are generally assembled one by one. For this reason, the structural design and production process of the steel box girder have an important influence on the assembly efficiency and quality of the steel box girder. The steel box girder is welded together by several components. It is generally produced and pre-assembled in the production plant, and sent to the bridge site for installation after the inspection meets the design requirements. For this reason, it is necessary to design a pre-assembled tire frame for the steel box girder to realize the assembly and inspection of the steel box girder. Summary of the invention

[0003] In view of the above problems, the utility model provides a pre-assembled frame for steel box beams. The technical solution of the utility model is:

[0004] A steel box girder pre-assembly frame includes a plurality of block assembly frames, wherein the block assembly frames include a rectangular frame, a support beam and a reinforcing oblique beam, wherein the support beam is arranged on the top of the rectangular frame, and the two ends of the reinforcing oblique beam are respectively connected to the transverse beam and / or vertical beam of the rectangular frame; the block assembly frames are arranged in a rectangular array to form a block assembly frame group, wherein the block assembly frame group includes a middle block assembly frame group and an outer block assembly frame group, wherein the outer block assembly frame group is arranged on both sides of the middle block assembly frame group, and a trolley channel is provided between the middle block assembly frame group and the outer block assembly frame group.

[0005] As a further description of the present invention, the rectangular frame and the reinforced diagonal beam are I-beams, and the support beam is a circular I-beam.

[0006] Furthermore, an anti-settling pad is provided at the lower end of the vertical beam of the rectangular frame.

[0007] Furthermore, the steel box girder pre-assembly cradle is provided with a plurality of cradle measurement points.

[0008] Furthermore, a plurality of jack points are arranged on the rectangular frame.

[0009] Furthermore, the upper portion of the outer block group frame group includes an inclined support adapted to the linear shape of both sides of the steel box girder.

[0010] Beneficial effects of the utility model:

[0011] The utility model can realize the pre-assembly of steel box girders, facilitate the pre-assembly detection of steel box girders, has the advantages of high assembly accuracy and pre-assembly efficiency, can be recycled, reduces steel loss, does not require multiple lifting and transportation, shortens the manufacturing cycle, reduces raw material costs and personnel management costs, improves manufacturing efficiency and other advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a diagram showing the overall layout of the pre-assembled frame of the steel box girder of the utility model;

[0013] Figure 2 This is a schematic diagram of the pre-joined length of the steel box girder of the utility model;

[0014] Figure 3 This is a structural diagram of a tire frame of a block assembly according to an embodiment of the utility model.

[0015] Figure numerals: support beam 1, reinforced oblique beam 2, transverse beam 3, vertical beam 4, middle block assembly frame group 5, outer block assembly frame group 6, trolley channel 7, steel box beam 8, anti-settling pad 9, inclined support 10, jack point 11. DETAILED DESCRIPTION

[0016] Example:

[0017] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0018] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0019] As shown in the attached drawings, a steel box girder pre-assembly frame of the present embodiment includes several block assembly frames, the block assembly frames include a rectangular frame, a support beam 1 and a reinforced diagonal beam 2, the support beam is arranged on the top of the rectangular frame, and the two ends of the reinforced diagonal beam are respectively connected to the transverse beam 3 and / or vertical beam 4 of the rectangular frame; the block assembly frames are arranged in a rectangular array to form a block assembly frame group, the block assembly frame group includes a middle block assembly frame group 5 and an outer block assembly frame group 6, the outer block assembly frame group is arranged on both sides of the middle block assembly frame group, and a trolley channel 7 is provided between the middle block assembly frame group and the outer block assembly frame group. The utility model can realize the pre-assembly of steel box girders, facilitate the pre-assembly inspection of steel box girders, have high assembly accuracy and pre-assembly efficiency, can be recycled, reduce steel loss, do not need multiple hoisting and transportation, shorten the manufacturing cycle, reduce the cost of raw materials and personnel management costs, improve manufacturing efficiency and other advantages.

[0020] Specifically, the steel box girder 8 of this embodiment includes a top plate unit, a bottom plate unit, a web unit, a diaphragm unit and a steel box girder nozzle unit. After being assembled into small sections of the steel box girder, the assembled beam sections are transported out of the frame by a beam transport trolley, the line shape and layout of the frame are adjusted, and the last beam section is moved to the head of the steel box girder pre-assembly frame, and the next beam section is used as the mother beam to continue to assemble the next round of box girders.

[0021] As a further illustration of the present invention, the rectangular frame and the reinforced diagonal beams are I-beams, and the support beams are round I-beams. On the one hand, the steel box girder pre-assembly frame of this embodiment has sufficient bearing capacity and sufficient rigidity to avoid deformation during use, and can meet the support requirements of the combined assembly of steel box girders. The round I-beams provide sufficient supporting contact area to avoid easy damage to the steel box girder during the assembly process. On the other hand, the support beams lift the steel box girder to a certain spatial distance from the rectangular frame, which is convenient for subsequent detection, positioning, and orientation adjustment assembly of the steel box girder.

[0022] Preferably, in this embodiment, an anti-settling pad 9 is provided at the lower end of the vertical beam of the rectangular frame to ensure that no settlement occurs during use.

[0023] Specifically, in this embodiment, the steel box girder pre-assembly frame is provided with a number of frame measurement points to control the position and height of the beam segment and ensure the size and elevation of each part. During the lengthening and assembly process, the large-segment frame measurement points are used to align and install each small-segment steel box girder to detect whether its key nodes such as coordinates, elevations and loops meet the matching requirements. In a preferred embodiment, a number of jack points 11 are also provided on the rectangular frame. During the lengthening and assembly process, if it is necessary to fine-tune the small-segment steel box girder, a three-way jack can be used. Specifically, the three-way jack is placed on the required jack point position, and fine-tuned by the corresponding three-way jack to control the longitudinal, transverse and vertical positions of the small-segment steel box girder so that its coordinates, elevations and loops meet the matching requirements to achieve precise pre-assembly.

[0024] Specifically, in this embodiment, the upper portion of the outer block group frame group includes an inclined support 10 adapted to the linear shape of both sides of the steel box girder, so as to better adapt to the vertical linear structure of the steel box girder of this embodiment.

[0025] The above only describes the preferred embodiments of the utility model, which cannot be understood as limiting the claims. The utility model is not limited to the above embodiments, and its specific structure is allowed to be changed. In short, all changes made within the protection scope of the independent claims of the utility model are within the protection scope of the utility model.

Claims

1. A steel box girder pre-assembled frame, characterized in that: It comprises a plurality of block group tire frames, each of which comprises a rectangular frame, a support beam and a reinforcing oblique beam, wherein the support beam is arranged on the top of the rectangular frame, and the two ends of the reinforcing oblique beam are respectively connected to the transverse beam and / or the vertical beam of the rectangular frame; the block group tire frames are arranged in a rectangular array to form a block group tire frame group, wherein the block group tire frame group comprises a middle block group tire frame group and an outer block group tire frame group, wherein the outer block group tire frame group is arranged on both sides of the middle block group tire frame group, and a trolley channel is arranged between the middle block group tire frame group and the outer block group tire frame group.

2. The steel box girder pre-assembly frame according to claim 1, characterized in that: The rectangular frame and the reinforced oblique beam are I-beams, and the support beam is a circular I-beam.

3. The steel box girder pre-assembly frame according to claim 1, characterized in that: An anti-settling pad is provided at the lower end of the vertical beam of the rectangular frame.

4. The steel box girder pre-assembly frame according to claim 1, characterized in that: The steel box girder pre-assembly cradle is provided with a plurality of cradle measurement points.

5. The steel box girder pre-assembly frame according to claim 1, characterized in that: The rectangular frame is also provided with a plurality of jack points.

6. The steel box girder pre-assembly frame according to claim 1, characterized in that: The upper part of the outer block group frame group includes an inclined support that is linearly adapted to the two sides of the steel box beam.

Images