Temporary hanging bracket device

Abstract

The utility model discloses a temporary hanging bracket device, and belongs to the technical field of bridge construction. According to the temporary hanging bracket device, the upper counter-force beam, the positioning beam and the pull rod are arranged, so that the temporary hanging bracket device can be completely attached and fixed to different positions of an arch rib; the temporary suspender is replaced by the temporary sling, so that the inclined arch rib suspender can be conveniently and quickly replaced; the jack is driven, the temporary sling is tightened, it is ensured that the upper counter-force beam is tightly attached to the top of the arch rib, the lower counter-force beam is tightly attached to the bottom of the bridge cross beam, an original old suspender force system is converted into a temporary hanging bracket device, and cable force conversion in the suspender replacement process is achieved.

Description

Technical Field

[0001] The utility model relates to a temporary hanging bracket device and belongs to the technical field of bridge construction. Background Art

[0002] As a member of the arch bridge family, the tied arch bridge has the general characteristics of the arch bridge and its own unique characteristics. It is a bridge type that combines the advantages of arch and beam.

[0003] With the increase of operating years of early arch bridges and traffic volume, some of the hangers of tied arch bridges have reached or exceeded their designed service life, and have shown problems such as aging and damage to varying degrees, posing certain hidden dangers to driving safety. In order to ensure driving safety and extend the service life of the bridge, these hangers need to be partially or completely replaced.

[0004] In the prior art, the method of replacing hangers mainly includes the temporary hanger method. However, many tied arch bridges now have inclined arch ribs, so it is not appropriate to use temporary hangers. Therefore, it is urgent to solve the problem of replacing inclined arch rib hangers. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a temporary hanging bracket device, and the technical solution is as follows.

[0006] The utility model provides a temporary hanger device comprising an upper reaction beam, a positioning beam, a pulling rod, a temporary sling and a lower reaction beam; the upper reaction beam and the lower reaction beam are both double-jointed I-beam structures, the positioning beam is a double-jointed channel steel structure, there are two pulling rods, which are fine-rolled threaded steel structures, and there are four temporary slings, made of steel strands; the upper reaction beam is pressed above the arch rib, the positioning beam is clamped on both sides of the arch rib, the pulling rod presses the arch rib from bottom to top, the upper reaction beam and the lower reaction beam are connected by four temporary slings, and the lower reaction beam is placed under the bridge crossbeam; wherein, four wedge-shaped leveling blocks are installed at the upper reaction beam to adapt to the angles at different positions of the arch rib so that the upper reaction beam can be tightly attached to the arch rib, and four jacks are installed at the lower reaction beam; the lower end of the temporary sling passes through the jack, the lower reaction beam, the bridge deck, the arch rib and the upper reaction beam in sequence from bottom to top.

[0007] In one embodiment, the function of the jack is to drive the jack to tighten the temporary sling to ensure that the upper reaction beam and the top of the arch rib are in close contact, and the lower reaction beam and the bottom of the bridge beam are in close contact, so that the original old hanger force system is converted to the temporary hanger device, thereby realizing the cable force conversion during the hanger replacement process.

[0008] In one embodiment, the pull rod and the positioning beam are connected via an adjustable screw rod, which can adapt to different positions of the arch rib.

[0009] In one embodiment, the positioning beam and the upper reaction beam are connected via roller sliding, so that the positioning beam can move horizontally on the upper reaction beam.

[0010] In one embodiment, the implementation method of the temporary hanger device in the replacement of the hanger rod includes:

[0011] (1) Install the temporary hanger device of the utility model on the bridge

[0012] The arch rib 8 is leveled, the bridge deck 7 is drilled, the upper reaction beam 1 and the lower reaction beam 5 are arranged, and the arch rib 8 and the lower end cross beam are connected by temporary slings 4, the upper reaction beam 1 and the lower reaction beam 5;

[0013] (2) Temporary cable tensioning and old suspender removal

[0014] First, gradually transfer the cable force of the original boom to the temporary hanger device, and then remove it when the original boom is in a completely unloaded state;

[0015] (3) Tensioning of new suspenders and removal of temporary cables

[0016] Replace the new hanger rod and load it step by step. At the same time, the temporary hanger device is unloaded step by step until the new hanger rod reaches the new design cable tension, and then the temporary hanger device is removed.

[0017] Advantages of the utility model:

[0018] The utility model provides a temporary hanger device, which can be completely and tightly fixed on different positions of the arch rib by arranging an upper reaction beam, a positioning beam and a pulling rod; by using a temporary sling instead of a temporary hanger, the inclined arch rib hanger can be conveniently and quickly replaced; by driving a jack and tightening the temporary sling, it is ensured that the upper reaction beam is in close contact with the top of the arch rib, and the lower reaction beam is in close contact with the bottom of the bridge crossbeam, so that the original old hanger force system is converted to the temporary hanger device, and the cable force conversion during the hanger replacement process is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic elevation diagram of a temporary hanging device;

[0020] Figure 2 It is a side schematic diagram of a temporary hanging bracket device;

[0021] In the figure, 1 is an upper reaction beam, 2 is a positioning beam, 3 is a pull rod, 4 is a temporary sling, 5 is a lower reaction beam, 6 is a sling, 7 is a bridge deck, 8 is an arch rib, 11 is a wedge-shaped leveling block, and 51 is a jack. DETAILED DESCRIPTION

[0022] The following is a specific description of the utility model.

[0023] Example 1

[0024] like Figure 1 , Figure 2 Shown is a schematic diagram of a temporary hanger device of the utility model.

[0025] The temporary hanger device includes an upper reaction beam 1, a positioning beam 2, a pull rod 3, a temporary sling 4, and a lower reaction beam 5; the upper reaction beam 1 and the lower reaction beam 5 are both double-jointed I-beam structures, the positioning beam 2 is a double-jointed channel steel structure, the pull rod 3 is a fine-rolled threaded steel structure, and the temporary sling 4 has four strands made of steel strands; the upper reaction beam 1 is pressed above the arch rib 8, the positioning beam 2 is clamped on both sides of the arch rib 8, the pull rod 3 presses the arch rib 8 from bottom to top, and the upper reaction beam 1 and the lower reaction beam 5 are connected by four temporary slings 4, and the lower reaction beam 5 is placed under the bridge crossbeam; wherein, the upper reaction beam 1 is equipped with four wedge-shaped leveling blocks 11 to adapt to the angles at different positions of the arch rib 8, so that the upper reaction beam 1 can be closely attached to the arch rib 8, and the lower reaction beam 5 is equipped with four jacks 51; the lower end of the temporary sling 4 passes through the jacks 51, the lower reaction beam 5, the bridge deck 7, the arch rib 8, and the upper reaction beam 1 in sequence from bottom to top.

[0026] The function of the jack 51 is to tighten the temporary sling 4 by driving the jack 51 to ensure that the upper reaction beam 1 and the top of the arch rib 8 are in close contact, and the lower reaction beam 5 and the bottom of the bridge beam are in close contact, so that the original old hanger force system is converted to the temporary hanger device, thereby realizing the cable force conversion during the hanger replacement process.

[0027] The implementation method of the utility model in the replacement of the suspension rod:

[0028] (1) Install the temporary hanger device of the utility model on the bridge

[0029] The arch rib 8 is leveled, the bridge deck 7 is drilled, the upper reaction beam 1 and the lower reaction beam 5 are arranged, and the arch rib 8 and the lower end cross beam are connected by temporary slings 4, the upper reaction beam 1 and the lower reaction beam 5;

[0030] (2) Temporary cable tensioning and old suspender removal

[0031] First, gradually transfer the cable force of the original boom to the temporary hanger device, and then remove it when the original boom is in a completely unloaded state;

[0032] (3) Tensioning of new suspenders and removal of temporary cables

[0033] Replace the new hanger rod and load it step by step. At the same time, the temporary hanger device is unloaded step by step until the new hanger rod reaches the new design cable tension, and then the temporary hanger device is removed.

[0034] Although the present invention has been disclosed as above in terms of preferred embodiments, it is not intended to limit the present invention. Anyone familiar with the technology may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the claims.

[0035] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A temporary hanging device, characterized in that: The temporary hanger device comprises an upper reaction beam (1), a positioning beam (2), a pull rod (3), a temporary sling (4), and a lower reaction beam (5); the upper reaction beam (1) and the lower reaction beam (5) are both double-jointed I-beam structures, the positioning beam (2) is a double-jointed channel steel structure, the pull rod (3) is a fine-rolled threaded steel structure, and there are four temporary slings (4) made of steel strands; the upper reaction beam (1) is pressed on the top of the arch rib (8), the positioning beam (2) is clamped on both sides of the arch rib (8), the pull rod (3) presses the arch rib (8) from bottom to top, and the upper reaction beam ( 1) and a lower reaction beam (5) are connected by four temporary slings (4), and the lower reaction beam (5) is placed under the bridge crossbeam; wherein, the upper reaction beam (1) is equipped with four wedge-shaped leveling blocks (11) for adapting to the angles at different positions of the arch rib (8) so that the upper reaction beam (1) can be closely attached to the arch rib (8), and the lower reaction beam (5) is equipped with four jacks (51); the lower end of the temporary sling (4) passes through the jacks (51), the lower reaction beam (5), the bridge deck (7), the arch rib (8), and the upper reaction beam (1) in sequence from bottom to top.

2. The temporary hanging device according to claim 1, characterized in that: The function of the jack (51) is to tighten the temporary sling (4) by driving the jack (51) to ensure that the upper reaction beam (1) and the top of the arch rib (8) are in close contact with each other, and the lower reaction beam (5) and the bottom of the bridge beam are in close contact with each other, so that the original old suspension rod force system is converted to the temporary suspension bracket device, thereby realizing the cable force conversion during the suspension rod replacement process.

3. The temporary hanging device according to claim 1, characterized in that: The pull rod (3) and the positioning beam (2) are connected via an adjustable screw rod, which can adapt to different positions of the arch rib (8).

4. The temporary hanging device according to claim 1, characterized in that: The positioning beam (2) and the upper reaction beam (1) are connected via roller sliding, so that the positioning beam (2) can move horizontally on the upper reaction beam (1).

5. The temporary hanging device according to claim 1, characterized in that: The temporary hanger device is installed in the following manner: leveling is performed above the arch rib (8), drilling is performed on the bridge deck (7), an upper reaction beam (1) and a lower reaction beam (5) are arranged, and the arch rib (8) and the lower end cross beam are connected by means of a temporary sling (4), the upper reaction beam (1) and the lower reaction beam (5).

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