Drip erosion prevention device for flange plate of municipal old bridge

Abstract

The utility model discloses a municipal old bridge flange plate drip erosion prevention device which comprises a flange plate, a round hole is formed in an inner cavity of the flange plate, an expansion pipe is connected to the round hole of the flange plate in a sleeved mode, the side wall of the lower surface of the flange plate is coated with an anti-corrosion coating, the side wall of a first bolt is connected with the expansion pipe, and the first bolt and the expansion pipe form an expansion bolt. An aluminum alloy water dripping edge is arranged on the side wall of the aluminum alloy water limiting plate, and the aluminum alloy water limiting plate is fixedly connected with the aluminum alloy water dripping edge through a fixing structure. The aluminum alloy water limiting plate is arranged at the inclined position of the flange plate, the aluminum alloy water limiting plate is fixed to the wall surface of the flange plate through the expansion bolt, the aluminum alloy water limiting plate is in a right angle shape, and the bottom of the aluminum alloy water limiting plate is oval, so that water dripping from a bridge floor is prevented from flowing upwards to the surface of the structure; the design and installation of the aluminum alloy water limiting plate can effectively prevent the bridge floor from dripping water and prevent water from permeating into the surface of the structure, so that the erosion hazard is fundamentally solved.

Description

Technical Field

[0001] The utility model relates to the technical field of reinforcing old municipal bridges, and specifically relates to a device for preventing dripping water erosion of flange plates of old municipal bridges. Background Art

[0002] Nowadays, many old municipal bridges do not have anti-drip devices on the flange plates. Over the years, water dripping from the bridge deck has corroded the structure along this point, causing water seepage and alkali efflux in the flange plate structure. In some serious cases, the bridge steel bars are even exposed. Long-term water erosion will damage the concrete structure and further corrode the steel bars, thereby affecting the bearing capacity of the bridge, which may cause the bridge to be unable to bear the expected weight and load, increasing safety hazards. Long-term dripping on the bridge deck will cause steel bar corrosion and concrete shedding. These phenomena will directly shorten the service life of the bridge. If effective waterproofing and anti-corrosion measures are not taken in time, the condition of the bridge may continue to deteriorate, and the maintenance workload and cost will increase accordingly. If the bridge has serious safety problems, such as cracks and collapses, it will directly affect traffic and bring inconvenience to citizens' travel. Therefore, we propose a device for preventing drip erosion on the flange plates of old municipal bridges to ensure public safety and extend the service life of the bridge. Utility Model Content

[0003] The purpose of the utility model is to provide a device for preventing the flange plate of an old municipal bridge from dripping and eroding, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for preventing dripping water erosion of the flange plate of an old municipal bridge, comprising a flange plate, a circular hole is opened in the inner cavity of the flange plate, an expansion tube is sleeved at the circular hole of the flange plate, the side wall of the lower surface of the flange plate is coated with an anti-corrosion coating, an aluminum alloy water-limiting plate is arranged on the lower surface of the anti-corrosion coating, a cushion block is arranged on the lower surface of the aluminum alloy water-limiting plate, a first bolt is sleeved in the inner cavity of the cushion block, the side wall of the first bolt passes through the inner cavity of the aluminum alloy water-limiting plate, the side wall of the first bolt is connected to the expansion tube, the first bolt and the expansion tube form an expansion bolt, the side wall of the aluminum alloy water-limiting plate is provided with an aluminum alloy drip edge, and the aluminum alloy water-limiting plate is fixedly connected to the aluminum alloy drip edge through a fixing structure.

[0005] Preferably, the fixing structure includes a bent circular hole plate, the side wall of which is symmetrically provided with circular holes, one side of the bent circular hole plate is fixedly connected to the side wall of the aluminum alloy drip edge, the other side of the bent circular hole plate is attached with a straight circular hole plate, the side wall of the straight circular hole plate is symmetrically provided with circular holes, and a second bolt is fixedly connected between the straight circular hole plate and the circular holes of the bent circular hole plate.

[0006] Preferably, a plug plate is fixedly connected to the side wall of the aluminum alloy drip edge, and the outer wall of the plug plate is sleeved with the inner cavity of the aluminum alloy water limiting plate.

[0007] Preferably, sealant is applied at the gap between the aluminum alloy drip edge and the anti-corrosion coating.

[0008] Preferably, the first bolt and the expansion tube form a complete expansion bolt, and the specification is an M6 expansion bolt with a spacing of 0.5m.

[0009] Compared with the prior art, the utility model has the following beneficial effects: an aluminum alloy water limiting plate is arranged at the inclined part of the flange plate, the aluminum alloy water limiting plate is fixed to the surface of the flange plate wall by expansion bolts, the aluminum alloy water limiting plate is in a right angle shape, and the bottom of the aluminum alloy water limiting plate is in an elliptical shape, so as to prevent water dripping from the bridge deck from reflecting upward to the surface of the structure. The design and installation of the aluminum alloy water limiting plate can effectively prevent water from dripping from the bridge deck and prevent water from penetrating into the surface of the structure, thus fundamentally solving the erosion hazard. The method is relatively simple in the construction process, and only the aluminum alloy water limiting plate needs to be fixed on the flange plate without complicated construction steps. Compared with other waterproof measures, such as replacing the bridge deck pavement, reinforcing the concrete structure, etc., the method of using the aluminum alloy water limiting plate has lower cost and is easier to implement. By preventing water from contacting the bridge structure, structural corrosion can be delayed and the service life of the bridge can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model;

[0011] Figure 2 for Figure 1 Structural details of the fixed structure;

[0012] Figure 3 for Figure 1 Structural details of the expansion tube;

[0013] Figure 4 for Figure 1 The structural stereogram of the aluminum alloy drip edge;

[0014] In the figure: 1. flange plate; 2. expansion tube; 3. anti-corrosion coating; 4. aluminum alloy water limiting plate; 5. spacer; 6. first bolt; 7. aluminum alloy drip edge; 8. fixing structure; 81. bent circular hole plate; 82. straight circular hole plate; 83. second bolt; 9. sealant; 10. plug plate. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1-4 The utility model provides a device for preventing dripping water erosion of a flange plate of an old municipal bridge, comprising a flange plate 1, a circular hole is opened in the inner cavity of the flange plate 1, an expansion tube 2 is sleeved at the circular hole of the flange plate 1, an anti-corrosion coating 3 is brushed on the side wall of the lower surface of the flange plate 1, an aluminum alloy water limiting plate 4 is arranged on the lower surface of the anti-corrosion coating 3, a cushion block 5 is arranged on the lower surface of the aluminum alloy water limiting plate 4, a first bolt 6 is sleeved in the inner cavity of the cushion block 5, a side wall of the first bolt 6 passes through the inner cavity of the aluminum alloy water limiting plate 4, a side wall of the first bolt 6 is connected with the expansion tube 2, the first bolt 6 and the expansion tube 2 form an expansion bolt, an aluminum alloy drip edge 7 is arranged on the side wall of the aluminum alloy water limiting plate 4, and the aluminum alloy water limiting plate 4 is fixedly connected to the aluminum alloy drip edge 7 through a fixing structure 8.

[0017] When assembling the protective structure, first apply the anti-corrosion coating 3 on the flange plate 1 for pre-selection treatment, then drill holes in the bottom of the flange plate 1 in sequence, and then put the expansion tube 2 into the pre-drilled holes, the aluminum alloy water limiting plate 4 is fitted with the bottom of the flange plate 1, and the cushion block 5 is fitted with the aluminum alloy water limiting plate 4. One side of the cushion block 5 is an inclined surface, which is convenient for the subsequent placement of the first bolt 6. When the first bolt 6 is penetrated in sequence, it will be sleeved inside the expansion tube 2. The first bolt 6 and the expansion tube 2 form an expansion bolt, and the model is an M6 expansion bolt with a spacing of 0.5m. When the first bolt 6 is rotated, the first bolt 6 will pull the end of the expansion tube 2, and the steel cylinder of the expansion tube 2 will be expanded and tightly fixed inside the wall of the flange plate 1. One side of the aluminum alloy water limiting plate 4 fixes the aluminum alloy drip edge 7 through the fixing structure 8. Through the combination of the aluminum alloy water limiting plate 4 and the aluminum alloy drip edge 7, water dripping from the bridge deck is prevented from returning to the surface of the structure, thereby fundamentally solving the erosion hazard.

[0018] The fixing structure 8 includes a bent circular hole plate 81, and circular holes are symmetrically provided on the side wall of the bent circular hole plate 81. One side of the bent circular hole plate 81 is fixedly connected to the side wall of the aluminum alloy drip edge 7, and a straight circular hole plate 82 is bonded to the other side of the bent circular hole plate 81. Circular holes are symmetrically provided on the side wall of the straight circular hole plate 82. The straight circular hole plate 82 and the circular holes of the bent circular hole plate 81 are fixedly connected by a second bolt 83. When the aluminum alloy drip edge 7 is bonded to the aluminum alloy water limiting plate 4, the bent circular hole plate 81 will also be bonded to the straight circular hole plate 82. When the bent circular hole plate 81 is aligned with the circular hole of the straight circular hole plate 82, the aluminum alloy drip edge 7 can be installed by fastening it with the second bolts 83 symmetrically set, providing an additional disassembly function to facilitate subsequent maintenance and replacement of the aluminum alloy drip edge 7.

[0019] The side wall of the aluminum alloy drip edge 7 is fixedly connected with an insert plate 10, and the outer wall of the insert plate 10 is sleeved with the inner cavity of the aluminum alloy water limiting plate 4. When the aluminum alloy drip edge 7 is installed, the insert plate 10 can be inserted into the interior of the aluminum alloy water limiting plate 4, which is convenient for alignment during installation and assists the installation of the fixing structure 8.

[0020] The gap between the aluminum alloy drip edge 7 and the anti-corrosion coating 3 is coated with sealant 9, and the fitting gap of the aluminum alloy drip edge 7 is sealed with sealant 9, which can fundamentally block the contact between the bridge deck dripping water and the bridge flange plate 1 structure, and further improve the anti-drip erosion effect.

[0021] The first bolt 6 and the expansion tube 2 form a complete expansion bolt, and the specification is an M6 expansion bolt with a spacing of 0.5m.

[0022] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preventing dripping water erosion of flange plates of municipal old bridges, characterized in that: The invention comprises a flange plate (1), wherein a circular hole is formed in the inner cavity of the flange plate (1), an expansion tube (2) is sleeved at the circular hole of the flange plate (1), an anti-corrosion coating (3) is applied to the side wall of the lower surface of the flange plate (1), an aluminum alloy water limiting plate (4) is arranged on the lower surface of the anti-corrosion coating (3), a cushion block (5) is arranged on the lower surface of the aluminum alloy water limiting plate (4), a first bolt (6) is sleeved in the inner cavity of the cushion block (5), a side wall of the first bolt (6) passes through the inner cavity of the aluminum alloy water limiting plate (4), a side wall of the first bolt (6) is connected to the expansion tube (2), the first bolt (6) and the expansion tube (2) form an expansion bolt, an aluminum alloy drip edge (7) is arranged on the side wall of the aluminum alloy water limiting plate (4), and the aluminum alloy water limiting plate (4) is fixedly connected to the aluminum alloy drip edge (7) through a fixing structure (8).

2. The device for preventing dripping water erosion of flange plates of municipal old bridges according to claim 1 is characterized in that: The fixing structure (8) comprises a curved circular hole plate (81), the side wall of the curved circular hole plate (81) is symmetrically provided with circular holes, one side of the curved circular hole plate (81) is fixedly connected to the side wall of the aluminum alloy drip edge (7), the other side of the curved circular hole plate (81) is fitted with a straight circular hole plate (82), the side wall of the straight circular hole plate (82) is symmetrically provided with circular holes, and a second bolt (83) is fixedly connected between the straight circular hole plate (82) and the circular holes of the curved circular hole plate (81).

3. The device for preventing dripping water erosion of flange plates of municipal old bridges according to claim 1 is characterized by: The side wall of the aluminum alloy drip edge (7) is fixedly connected with an insert plate (10), and the outer wall of the insert plate (10) is sleeved with the inner cavity of the aluminum alloy water limiting plate (4).

4. The device for preventing dripping water erosion of flange plates of municipal old bridges according to claim 1 is characterized in that: The gap between the aluminum alloy drip edge (7) and the anti-corrosion coating (3) is coated with sealant (9).

5. The device for preventing dripping water erosion of flange plates of municipal old bridges according to claim 1 is characterized by: The first bolt (6) and the expansion tube (2) form a complete expansion bolt, and the specification is an M6 expansion bolt with a spacing of 0.5m.

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