CN219175015U - A detachable connection structure of steel box girder temporary support frame - Google Patents

Abstract

A detachable connection structure for a temporary support frame of a steel box girder, including a steel pipe support assembly, a support distribution beam, and an adjustment column; the steel pipe support assembly and the support distribution beam, and between the support distribution beam and the adjustment column are fixedly connected by connecting sleeves , so the original welded connection becomes a detachable connection; when the construction of a steel structure bridge is completed, the combination of steel pipe brackets, supporting distribution beams, and adjusting columns maintain the integrity of the original structure through disassembly, so they can be reused for other applications The construction requirements of the steel structure bridge greatly reduce the construction cost of the temporary support frame of the steel box girder; in addition, after the connection sleeve structure is adopted, in the connection structure of the adjustment column and the support distribution beam, the reinforcement plate can be added to strengthen the adjustment column and the support The connection strength of the distribution beam is improved, thus solving the construction safety risk problem faced by the welded connection structure between the support distribution beam and the adjustment column when it is applied to the construction of a large bridge in a windy area.

Description

A detachable connection structure of steel box girder temporary support frame

technical field

The utility model relates to the technical field of a steel box girder temporary support frame for steel structure bridge construction, in particular to a detachable connection structure of a steel box girder temporary support frame.

Background technique

During the construction of steel structure bridges, a large number of steel box girder temporary support frames are used. The pillars, support distribution beams, and adjustment columns of the existing temporary support frames are usually connected by welding. After the construction of a steel structure bridge is completed, the pillars, support The distributing beam and the adjusting column are cut and removed, so some materials cannot be reused, which greatly increases the construction cost of the temporary support frame of the steel box girder; in addition, the existing adjusting column is fixedly connected to the supporting distribution beam by welding. Steel box girders with small volume and weight can still meet the service conditions; but for steel box girders with large volume and weight, due to the limitation of the leg width of the support distribution beam itself, the adjustment column welded to the support distribution beam cannot pass The ribs increase the connection strength. When the steel box girder encounters the lateral load transmitted by the wind load, the shear stress and tensile stress on the weld between the supporting distribution beam and the adjusting column may exceed the maximum design requirements, and the weld tearing occurs. Therefore, the construction of extra-large bridges in windy areas greatly increases the construction safety risk.

Utility model content

In order to overcome the deficiencies in the background technology, the utility model discloses a detachable connection structure of a steel box girder temporary support frame, which connects the connection structure among the steel pipe support combination, the support distribution beam, and the adjustment column by the original welding, and is uniform. It is revised to fix the connection through the connection sleeve; after the connection sleeve is adopted, the connection structure between the steel pipe support combination, the support distribution beam, and the adjustment column becomes a detachable connection. After the construction of a steel structure bridge is completed, the steel pipe support combination, support distribution Beams and adjusting columns maintain the integrity of the original structure through disassembly, so they can be reused; in addition, after adopting the connecting sleeve structure, ribs can be added to strengthen the adjusting column and supporting distribution beam in the connection structure between the adjusting column and the supporting distribution beam The connection strength is high, thus solving the construction safety risk problem faced by the welded connection structure between the supporting distribution beam and the adjusting column when it is applied to the construction of a large bridge in a windy area.

In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme: a detachable connection structure of a steel box girder temporary support frame, including a steel pipe support combination, a support distribution beam, and an adjustment column; , The support distribution beam and the adjustment column are fixedly connected by connecting sleeves; the connecting sleeve is a detachable connection structure connected by bolts. After using the connecting sleeve, the steel pipe brackets of the temporary support frame of the steel box girder in the past are combined and supported. The welded fixed connection between the beam and the adjusting column becomes a detachable fixed connection with the connecting sleeve.

Further, the connection sleeve includes a connection plate and a support block, and the two support blocks are symmetrically arranged between the two connection plates, and are fixedly connected by welding to form a hollow support distribution beam hole between the connection plate and the support block; the connection sleeve The hollow support distribution beam hole is fixedly connected with the support distribution beam; the connecting plate is used for combining with the steel pipe support and adjusting the fixed connection between the columns.

Further, the steel pipe support combination includes several steel pipe pillars, and several steel pipe pillars are fixedly connected through several rods to form a truss support structure; both ends of the steel pipe pillars are fixedly provided with steel pipe pillar flanges, and the connecting sleeve is fixedly arranged and connected to the top of the steel pipe pillar flanges, and the steel pipe pillars The connecting plate of the pillar flange and the connecting sleeve is fixedly connected by bolts and nuts; or the supporting block of the steel pipe pillar flange and the connecting sleeve is fixedly connected by bolts.

Further, the supporting distribution beam is a double-joint I-shaped steel structure; the supporting distribution beam is arranged in the supporting distribution beam hole of the connecting sleeve, and connecting bolts are arranged laterally on the supporting block of the connecting sleeve, and the ends of the connecting bolts are pressed against the waist of the supporting distribution beam , to realize the fixed connection between the supporting distribution beam and the connecting sleeve.

Further, the adjustment column includes an adjustment column body and an adjustment column backing plate, and the adjustment column body is fixedly arranged in the middle of the upper part of the adjustment column backing plate; a reinforcing rib is also fixedly arranged between the adjustment column body and the adjustment column backing plate; the adjustment column of the adjustment column The backing plate and the connecting plate of the connecting sleeve are fixedly connected through bolts and nuts; or the backing plate of the adjusting column of the adjusting column is fixedly connected with the supporting block of the connecting sleeve through bolts.

Further, the outer surface of the support block is lower than the corresponding side of the connection plate; or the outer surface of the support block is flush with the corresponding side of the connection plate, which is more convenient to use tools to lock the bolts arranged laterally on the support block.

Due to the adoption of the above-mentioned technical scheme, the utility model has the following beneficial effects: a steel box girder temporary support frame detachable connection structure disclosed by the utility model includes a steel pipe support combination, a supporting distribution beam, and an adjustment column; the steel pipe support combination The connection between the support distribution beam and the support distribution beam and the adjustment column is fixed through the connection sleeve; after the connection sleeve is adopted, the connection structure between the steel pipe support combination, the support distribution beam and the adjustment column is changed from the original welding connection It is a detachable connection. After the construction of a steel structure bridge is completed, the steel pipe bracket combination, supporting distribution beam, and adjusting column can be disassembled to maintain the integrity of the original structure, so they can be reused, which greatly reduces the temporary support frame of the steel box girder. In addition, after adopting the connecting sleeve structure, in the connection structure between the adjusting column and the supporting distribution beam, the reinforcement plate can be added to strengthen the connection strength between the adjusting column and the supporting distribution beam, thus solving the problem of the previous gap between the supporting distribution beam and the adjusting column. When the welded connection structure between the bridges is applied to the construction of super-large bridges in windy areas, it faces construction safety risks.

Description of drawings

Fig. 1 is a structural schematic diagram of a steel box girder temporary support frame;

Figure 2 is a schematic diagram of the structure of the connecting sleeve;

Fig. 3 is a schematic diagram of the section structure of the supporting distribution beam;

Fig. 4 is a schematic diagram of the combined structure of the steel pipe support;

Fig. 5 is a schematic diagram of the connection structure between the steel pipe bracket combination and the supporting distribution beam;

Figure 6 is a schematic diagram of the appearance of the adjustment column;

Fig. 7 is a schematic diagram of the connection structure between the adjusting column and the connecting sleeve;

Fig. 8 is a schematic diagram of the structure of the connecting sleeve of the second embodiment;

Fig. 9 is the structural schematic diagram of the steel box girder temporary support frame of embodiment two;

Fig. 10 is a schematic diagram of the connection structure between the steel pipe support combination and the supporting distribution beam in the second embodiment;

Fig. 11 is a schematic diagram of the connection structure between the adjusting column and the connecting sleeve in the second embodiment;

Fig. 12 is a schematic structural diagram of the connection sleeve of the third embodiment.

In the figure: 1. Steel pipe support combination; 1.1. Steel pipe support; 1.2. Steel pipe support flange; 2. Support distribution beam; 3. Adjustment column; 3.1. Adjustment column body; 3.2. Adjustment column backing plate; 4. Connection sleeve; 4.1. Connection plate; 4.2. Support block; 4.3. Support distribution beam hole; 4.4. I-shaped steel leg groove.

Detailed ways

The utility model can be explained in detail through the following examples, and the purpose of disclosing the utility model is to protect all technical improvements within the scope of the utility model.

Embodiment one:

A detachable connection structure of a steel box girder temporary support frame, see Figures 1 and 9 of the specification: including a steel pipe bracket combination 1, a support distribution beam 2, an adjustment column 3, and a connecting sleeve 4; see Figure 4 of the specification: Steel tube bracket combination 1 It includes four steel pipe pillars 1.1, and the four steel pipe pillars 1.1 are fixedly connected by several rods to form a truss support structure; the two ends of the steel pipe pillars 1.1 are fixed with steel pipe pillar flanges 1.2 by welding, and the steel pipe pillar flanges 1.2 are provided with connection through holes ; See accompanying drawing 2 of the specification: the connecting sleeve 4 includes connecting plates 4.1 arranged up and down, and supporting blocks 4.2 arranged left and right. On the corresponding side of the connection plate 4.1, a support distribution beam hole 4.3 is formed between the connection plate 4.1 and the support block 4.2, and the four corners of the support distribution beam hole 4.3 are provided with I-shaped steel leg grooves 4.4; the connection plate 4.1 is provided with connection through holes , the outer surface of the support block 4.2 is provided with a locking threaded hole; the connection between the connecting sleeve 4 and the steel pipe bracket combination 1 refers to the accompanying drawing 5 in the specification: the connecting plate 4.1 at the bottom of the connecting sleeve 4 is arranged on the steel pipe support flange 1.2 of the steel pipe bracket combination 1 In the upper part, the connection plate 4.1 and the steel pipe support flange 1.2 correspond to the connection through holes, and the connection sleeve 4 is fixedly connected to the upper part of the steel pipe support combination 1 through bolts and nuts;

The supporting distribution beam 2 is a double I-shaped steel structure, see the accompanying drawing 3 of the specification; the connection of the supporting distribution beam 2 and the connection sleeve 4 is shown in the accompanying drawing 5 of the specification: the supporting distribution beam 2 is set in the supporting distribution beam hole 4.3 of the connecting sleeve 4 , through the locking threaded holes on the outer sides of the support blocks 4.2 on both sides, the ends of the bolts are locked on the waist of the support distribution beam 2, so as to realize the fixed connection between the support distribution beam 2 and the connection sleeve 4;

See Figure 6 of the specification: the adjustment column 3 includes the adjustment column body 3.1 and the adjustment column backing plate 3.2. The adjustment column body 3.1 is fixed in the middle of the upper part of the adjustment column backing plate 3.2 by welding. The width of the legs of the beam 2 itself, therefore between the adjustment column body 3.1 and the adjustment column backing plate 3.2, the reinforcement rib 3.3 can also be fixed by welding, and the adjustment column body 3.1 and the adjustment column backing plate 3.2 can be reinforced by the reinforcement rib 3.3. Welding connection strength to ensure the strength of the connection structure of the adjustment column body 3.1 when the temporary support frame of the steel box girder is used for the construction of an extra-large bridge in a windy area; the adjustment column backing plate 3.2 of the adjustment column 3 is provided with a connection through hole; When the adjustment column 3 needs to be fixedly connected with the support distribution beam 2, firstly, the connection sleeve 4 is fixedly connected to the support distribution beam 2, and the adjustment column backing plate 3.2 of the adjustment column 3 is arranged on the connection plate 4.1 on the upper part of the sleeve 4, and the connection The connection through holes of plate 4.1 and adjustment column backing plate 3.2 correspond, and the adjustment column 3 is fixedly connected to the upper part of the connection sleeve 4 through bolts and nuts.

Embodiment two:

See Figure 8 of the description: In this embodiment, the outer side of the support block 4.2 of the connection sleeve 4 is flush with the corresponding side of the connection plate 4.1, and the connection sleeve 4 of this structure is more convenient to use tools to lock the support block during use 4.2 The locking bolts arranged on the upper side; in this embodiment, the support block 4.2 of the connecting sleeve 4 is provided with fixed threaded holes corresponding to the connecting through holes of the connecting plate 4.1 on the upper and lower end surfaces; when the connecting sleeve 4 and the steel pipe bracket combination 1 are fixed When connecting, refer to the accompanying drawing 10 of the specification, the connecting plate 4.1 at the lower part of the connecting sleeve 4 is set on the upper part of the steel pipe support flange 1.2 of the steel pipe support assembly 1, and the fixed threaded hole of the support block 4.2 corresponds to the connection through hole of the steel pipe support flange 1.2. The connecting sleeve 4 is fixedly connected to the upper part of the steel pipe support assembly 1 directly through bolts; when the adjusting column 3 is fixedly connected to the connecting sleeve 4, refer to the accompanying drawing 11 of the specification, the adjusting column backing plate 3.2 of the adjusting column 3 is arranged on the upper part of the connecting sleeve 4 On the connecting plate 4.1, the fixed threaded hole of the support block 4.2 corresponds to the connection through hole of the adjusting column backing plate 3.2, and the adjusting column backing plate 3.2 of the adjusting column 3 is fixedly connected to the top of the connecting sleeve 4 by bolts.

Embodiment three:

See accompanying drawing 12 of description: In this embodiment, in the support distribution beam hole 4.3 that is formed between connecting plate 4.1, support block 4.2, cancel the I-beam leg groove 4.4 of four corners of support distribution beam hole 4.3, so support block 4.2 The inner surface of the support block 4.2 is more convenient for processing.

The unspecified part of the utility model is prior art.

Claims (6)

1. A detachable connection structure of a steel box girder temporary support frame, including a steel pipe support combination (1), a support distribution beam (2), and an adjustment column (3); it is characterized in that: the steel pipe support combination (1) and the support distribution beam (2), and between the supporting distribution beam (2) and the adjusting column (3) are all fixedly connected by connecting sleeves (4). 2. The detachable connection structure of the steel box girder temporary support frame according to claim 1, characterized in that: the connection sleeve (4) includes a connection plate (4.1) and a support block (4.2), and the two support blocks (4.2) are symmetrical, It is fixedly arranged between two connecting plates (4.1), and a supporting distribution beam hole (4.3) is formed between the connecting plate (4.1) and the support block (4.2). 3. The detachable connection structure of the steel box girder temporary support frame according to claim 2, characterized in that: the steel pipe support combination (1) includes several steel pipe pillars (1.1), and the two ends of the steel pipe pillars (1.1) are fixedly arranged with steel pipe pillars The flange (1.2), the connecting sleeve (4) is fixedly set and connected to the top of the steel pipe pillar flange (1.2). 4. According to claim 3, the detachable connection structure of the steel box girder temporary support frame is characterized in that: the support distribution beam (2) is a double I-shaped steel structure; the support distribution beam (2) is arranged on the connection sleeve (4) In the support distribution beam hole (4.3), it is fixedly connected with the connecting sleeve (4). 5. The detachable connection structure of the steel box girder temporary support frame according to claim 4, characterized in that: the adjustment column (3) includes the adjustment column body (3.1), the adjustment column backing plate (3.2), and the adjustment column body (3.1) It is fixedly arranged in the middle of the upper part of the adjusting column backing plate (3.2); a reinforcing rib (3.3) is fixedly arranged between the adjusting column body (3.1) and the adjusting column backing plate (3.2); the adjusting column (3) passes through the adjusting column backing plate (3.2) ) is fixedly connected with the connecting sleeve (4). 6. The detachable connection structure of the steel box girder temporary support frame according to claim 4, characterized in that: the outer surface of the support block (4.2) is lower than the corresponding side of the connecting plate (4.1); or the outer surface of the support block (4.2) is in line with the The corresponding sides of the connecting plate (4.1) are flush.

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