Prefabricated T-beam bridge anti-creeping device

By setting up stainless steel skateboards and skateboard support between the web and stop of the T-beam bridge, the extrusion problem caused by the rotation and crawling of the beam body under the inclined bridge effect is solved, and the protection of the beam end is achieved, ensuring the structural safety of the bridge.

CN223189567UActive Publication Date: 2025-08-05BEIJING MUNICIPAL ENG PROFESSIONAL DESIGNINST
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Patent Information

Application Number
CN202422403397.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-30
Publication Date
2025-08-05
Estimated Expiration
2034-09-30

AI Technical Summary

Technical Problem

The existing T-beam bridge is prone to rotation of the beam body and crawling at the end of the beam under the inclined bridge effect, causing the beam end to be squeezed with the stop, causing the occurrence of cracking, damage and other diseases, affecting structural safety.

Method used

Stainless steel skateboards and skateboard support are arranged between the web of the T-beam and the stop on the abutment. A gap is left between the skateboard support and the stainless steel skateboard, allowing them to slide relative to each other under the inclined bridge effect, releasing the beam body to displace and prevent extrusion and damage.

Benefits of technology

Effectively prevent the extrusion damage between the T-beam and the stop, ensure the safety and stability of the bridge structure, and avoid damage to the beam end.

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Abstract

The utility model relates to an anti-creeping device for a prefabricated T-beam bridge. The anti-creeping device comprises a first embedded part, a second embedded part, a stainless steel sliding plate and a sliding plate support, the first embedded part can be installed in a web of a T-shaped beam, the second embedded part can be installed in a check block on a bridge abutment, one side of the stainless steel sliding plate is connected with the first embedded part, the other side of the stainless steel sliding plate faces the check block, one side of the sliding plate support is connected with the second embedded part, and the other side of the sliding plate support faces the stainless steel sliding plate. A gap is reserved between the sliding plate support and the stainless steel sliding plate and used for releasing beam body displacement of the T-shaped beam under the skew bridge effect. The anti-creeping device for the prefabricated T-beam bridge has the beneficial effects that as the sliding plate support and the stainless steel sliding plate are arranged between the stop block and the web plate of the T-beam, when the T-beam is influenced by the skew bridge effect, the beam body rotates and the beam end creeps, the stainless steel sliding plate at the web plate and the sliding plate support on the stop block are in close contact and slide relatively, and the creeping of the T-beam is prevented; therefore, beam body displacement under the skew bridge effect is released, and extrusion damage between the beam end of the T-shaped beam and the check block is prevented.
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Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to an anti-climbing device for precast T-beam bridges. Background Art

[0002] See Figure 1 , the existing T-beam bridge includes a bridge abutment 1 and a plurality of T-shaped beams 3 arranged on the bridge abutment 1. The bridge abutment 1 is a building that supports the T-shaped beam 3 and connects with the embankment. Its functions include transferring the load of the upper structure of the bridge to the foundation, resisting the filling pressure behind the abutment, stabilizing the subgrade at the bridgehead, and enabling the reliable and smooth connection of the line at the bridgehead and the line on the bridge. The T-shaped beam 3 consists of a web 31 located in the vertical part and a flange 32 located in the horizontal part. The T-shaped beam 3 adopts the transverse assembly technology. After prefabricating the T-shaped beam 3 in the factory, the construction of pouring the cross beam and the wet joint of the bridge deck is carried out on site.

[0003] The defects and deficiencies of the existing T-beam bridge are as follows: when the T-beam bridge is applied to an inclined bridge (slant angle > 15°), the T-shaped beam 3 is affected by the inclined bridge effect and is prone to beam body rotation and beam end climbing. If not intervened, a beam dropping accident is extremely likely to occur, affecting the operation safety of the bridge. The traditional intervention measure is to set a concrete block 2 on the bridge abutment 1. However, there are problems with the traditional intervention measure. Setting the block 2 only restricts the displacement of the T-shaped beam 3. The T-shaped beam 3 will be squeezed together with the block 2 under the inclined bridge effect, resulting in diseases such as splitting and damage at the beam end of the T-shaped beam 3 and the block 2, seriously affecting the structural safety of the T-beam bridge.

[0004] Therefore, there is an urgent need to provide an anti-climbing device for precast T-beam bridges. Summary of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the above-mentioned defects and deficiencies of the prior art, the utility model provides an anti-climbing device for precast T-beam bridges, which solves the technical problem that in the prior art, the T-beam bridge is squeezed together with the concrete block under the inclined bridge effect, resulting in splitting and damage at the beam end and the concrete block.

[0007] (2) Technical Solutions

[0008] To achieve the above purpose, the main technical solutions adopted by the utility model include:

[0009] The embodiment of the utility model provides an anti-climbing device for precast T-beam bridges, including a first embedded part, a second embedded part, a stainless steel slide plate, and a slide plate support;

[0010] The first embedded part can be installed in the web of the T-beam, and the second embedded part can be installed in the block on the bridge pier. One side of the stainless steel slide plate is connected to the first embedded part, and the other side of the stainless steel slide plate faces the block. One side of the slide plate support is connected to the second embedded part, and the other side of the slide plate support faces the stainless steel slide plate. And there is a gap between the slide plate support and the stainless steel slide plate to release the beam displacement of the T-beam under the skew bridge effect.

[0011] Optionally, the first embedded part includes a first embedded steel plate and multiple first U-shaped steel bars;

[0012] The multiple first U-shaped steel bars are evenly arranged in the web, and the openings of the first U-shaped steel bars face the inner side of the web. The middle parts of the first U-shaped steel bars are welded to the inner side of the first embedded steel plate, and the outer side of the first embedded steel plate is welded to the stainless steel slide plate.

[0013] Optionally, the edge of the stainless steel slide plate is welded to the first embedded steel plate by means of fillet welding.

[0014] Optionally, the second embedded part includes a second embedded steel plate and multiple second U-shaped steel bars;

[0015] The multiple second U-shaped steel bars are evenly arranged in the block, and the openings of the second U-shaped steel bars face the inner side of the block. The middle parts of the second U-shaped steel bars are welded to the inner side of the second embedded steel plate, and the outer side of the second embedded steel plate is connected to the slide plate support.

[0016] Optionally, the slide plate support is a polytetrafluoroethylene plate, and the polytetrafluoroethylene plate is bonded to the second embedded steel plate.

[0017] Optionally, the polytetrafluoroethylene plate and the second embedded steel plate are bonded with epoxy resin glue;

[0018] The thickness of the polytetrafluoroethylene plate is 20 - 28 mm, and the thickness of the epoxy resin glue is 4 - 8 mm.

[0019] Optionally, limiting steel plates are welded to the left and right sides and the lower side of the slide plate support on the outer side of the second embedded steel plate, and the thickness of the limiting steel plates is less than the thickness of the slide plate support.

[0020] Optionally, the lengths of the first embedded steel plate and the second embedded steel plate are 250 - 350 mm, and the widths are 200 - 260 mm.

[0021] (III) Beneficial effects

[0022] The beneficial effects of the present utility model are as follows: The anti-climbing device for precast T-beam bridges of the present utility model includes a first embedded part, a second embedded part, a stainless steel slide plate, and a slide plate support. The first embedded part can be installed in the web of the T-beam, the second embedded part can be installed in the block on the bridge abutment. One side of the stainless steel slide plate is connected to the first embedded part, the other side of the stainless steel slide plate faces the block, one side of the slide plate support is connected to the second embedded part, the other side of the slide plate support faces the stainless steel slide plate, and there is a gap between the slide plate support and the stainless steel slide plate to release the beam displacement of the T-beam under the skew bridge effect. Compared with the prior art, for this anti-climbing device for precast T-beam bridges, since the slide plate support and the stainless steel slide plate are provided between the block and the web of the T-beam, when the T-beam is affected by the skew bridge effect and the beam rotates and the beam end climbs, the stainless steel slide plate at the web closely contacts the slide plate support on the block and relative sliding occurs, thereby releasing the beam displacement under the skew bridge effect and preventing extrusion damage between the beam end of the T-beam and the block. Brief Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of a T-beam bridge in the prior art;

[0024] Figure 2 is a schematic structural diagram of the anti-climbing device for precast T-beam bridges of the present utility model when arranged on the T-beam bridge;

[0025] Figure 3 is Figure 2 a schematic cross-sectional view of the anti-climbing device for precast T-beam bridges in

[0026] Figure 4 is Figure 2 a schematic cross-sectional view of the anti-climbing device for precast T-beam bridges in

[0027] Figure 5 is a front view schematic diagram of the first embedded part of the anti-climbing device for precast T-beam bridges of the present utility model;

[0028] Figure 6 is a side view schematic diagram of the first embedded part of the anti-climbing device for precast T-beam bridges of the present utility model.

[0029]

Description of the Reference Numerals

[0030] 1: Bridge abutment; 2: Block; 3: T-beam; 31: Web; 32: Flange; 4: First embedded part; 5: Second embedded part; 6: Stainless steel slide plate; 7: Slide plate support; 8: Limiting steel plate; 9: First embedded steel plate; 10: First U-shaped steel bar; 11: Second embedded steel plate; 12: Second U-shaped steel bar. Detailed Embodiment

[0031] For a better explanation of the present utility model and for easier understanding, the following will describe the present utility model in detail with reference to the accompanying drawings and through specific embodiments.

[0032] Referring to Figure 2 、 Figure 3 and Figure 4 , this embodiment provides an anti-climbing device for a precast T-beam bridge, which includes a first embedded part 4, a second embedded part 5, a stainless steel slide plate 6 and a slide plate support 7.

[0033] The first embedded part 4 can be installed in the web 31 of the T-beam 3, the second embedded part 5 can be installed in the block 2 on the abutment 1. One side of the stainless steel slide plate 6 is connected to the first embedded part 4, the other side of the stainless steel slide plate 6 faces the block 2, one side of the slide plate support 7 is connected to the second embedded part 5, the other side of the slide plate support 7 faces the stainless steel slide plate 6, and there is a gap between the slide plate support 7 and the stainless steel slide plate 6 for releasing the beam displacement of the T-beam 3 under the skew bridge effect. It should be noted that before pouring the web 31 of the T-beam 3, after the steel bars are tied and welded, the first embedded part 4 is placed in the web 31, and then the web 31 of the T-beam 3 is concreted. The installation method of the second embedded part 5 is the same as that of the first embedded part 4 and will not be elaborated here.

[0034] For the anti-climbing device of the precast T-beam bridge in this embodiment, due to the setting of the slide plate support 7 and the stainless steel slide plate 6 between the block 2 and the web 31 of the T-beam 3, when the T-beam 3 is affected by the skew bridge effect and the beam rotates and the beam end climbs, the stainless steel slide plate 6 at the web 31 closely contacts the slide plate support 7 on the block 2 and relative sliding occurs, thereby releasing the beam displacement under the skew bridge effect and preventing extrusion damage between the beam end of the T-beam 3 and the block 2. The size of the gap between the slide plate support 7 and the stainless steel slide plate 6 is 15 - 20 mm.

[0035] Combined with Figure 4 、 Figure 5 and Figure 6 As shown, the first embedded part 4 of this embodiment includes a first embedded steel plate 9 and a plurality of first U-shaped steel bars 10. The plurality of first U-shaped steel bars 10 are uniformly arranged in the web 31, and the openings of the first U-shaped steel bars 10 face the inner side of the web 31. The middle parts of the first U-shaped steel bars 10 are welded to the inner side surface of the first embedded steel plate 9, and the outer side surface of the first embedded steel plate 9 is welded to the stainless steel slide plate 6. Preferably, the edge of the stainless steel slide plate 6 and the first embedded steel plate 9 are welded together by surrounding welding.

[0036] Combined with Figure 2 and Figure 3As shown in the figure, the second embedded part 5 of this embodiment includes a second embedded steel plate 11 and multiple second U-shaped steel bars 12. The multiple second U-shaped steel bars 12 are evenly arranged in the retaining block 2, and the openings of the second U-shaped steel bars 12 face the inner side of the retaining block 2. The middle parts of the second U-shaped steel bars 12 are welded to the inner side surface of the second embedded steel plate 11, and the outer side surface of the second embedded steel plate 11 is connected to the sliding plate bearing 7.

[0037] Furthermore, the sliding plate bearing 7 is a polytetrafluoroethylene plate, and the polytetrafluoroethylene plate is bonded to the second embedded steel plate 11. Preferably, epoxy resin glue is used for bonding between the polytetrafluoroethylene plate and the second embedded steel plate 11. The thickness of the polytetrafluoroethylene plate is 20 - 28 mm, and the thickness of the epoxy resin glue is 4 - 8 mm.

[0038] Furthermore, limiting steel plates 8 are welded to the outer side surface of the second embedded steel plate 11 on the left and right sides and the lower side of the sliding plate bearing 7. The thickness of the limiting steel plates 8 is less than the thickness of the sliding plate bearing 7. The function of the limiting steel plates 8 is to form a U-shaped groove around the polytetrafluoroethylene plate to prevent the polytetrafluoroethylene plate from moving.

[0039] In this embodiment, the lengths of the first embedded steel plate 9 and the second embedded steel plate 11 are 250 - 350 mm, and the widths are 200 - 260 mm.

[0040] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise specifically defined.

[0041] In the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly defined and limited, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, a first feature being "above", "over" and "on top of" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. A first feature being "under", "beneath" and "underneath" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0043] In the description of this specification, the description of terms such as "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0044] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations to the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. A prefabricated T-beam bridge anti-creep device, characterized by: It comprises a first embedded part (4), a second embedded part (5), a stainless steel slide plate (6) and a slide plate support (7); The first embedded part (4) can be installed in the web (31) of the T-beam (3), the second embedded part (5) can be installed in the stopper (2) on the abutment (1), one side of the stainless steel slide (6) is connected to the first embedded part (4), and the other side of the stainless steel slide (6) faces the stopper (2), one side of the slide support (7) is connected to the second embedded part (5), and the other side of the slide support (7) faces the stainless steel slide (6), and a gap is left between the slide support (7) and the stainless steel slide (6) to release the displacement of the beam body of the T-beam (3) under the inclined bridge effect.

2. The anti-creep device for a prefabricated T-beam bridge according to claim 1, characterized in that: The first embedded part (4) includes a first embedded steel plate (9) and a plurality of first U-shaped steel bars (10); A plurality of first U-shaped steel bars (10) are evenly arranged in the web (31), and the openings of the first U-shaped steel bars (10) face the inner side of the web (31), the middle portion of the first U-shaped steel bars (10) is welded to the inner side surface of the first embedded steel plate (9), and the outer side surface of the first embedded steel plate (9) is welded to the stainless steel slide plate (6).

3. The anti-creep device for a prefabricated T-beam bridge according to claim 2, characterized in that: The edge of the stainless steel slide plate (6) and the first embedded steel plate (9) are welded together by circumferential welding.

4. The anti-creep device for a prefabricated T-beam bridge according to claim 2, characterized in that: The second embedded part (5) includes a second embedded steel plate (11) and a plurality of second U-shaped steel bars (12); A plurality of second U-shaped steel bars (12) are evenly arranged in the block (2), and the openings of the second U-shaped steel bars (12) face the inner side of the block (2). The middle portions of the plurality of second U-shaped steel bars (12) are welded to the inner side surface of the second embedded steel plate (11), and the outer side surface of the second embedded steel plate (11) is connected to the slide support (7).

5. The anti-creep device for a prefabricated T-beam bridge according to claim 4, characterized in that: The slide plate support (7) is a polytetrafluoroethylene plate, and the polytetrafluoroethylene plate is bonded to the second embedded steel plate (11).

6. The anti-creep device for a prefabricated T-beam bridge according to claim 5, characterized in that: The polytetrafluoroethylene plate and the second embedded steel plate (11) are bonded with epoxy resin glue; The thickness of the PTFE sheet is 20-28 mm, and the thickness of the epoxy resin glue is 4-8 mm.

7. The anti-creep device for a prefabricated T-beam bridge according to claim 5, characterized in that: The outer side surface of the second embedded steel plate (11) is welded with a limiting steel plate (8) on the left and right sides and the lower side of the slide support (7), and the thickness of the limiting steel plate (8) is less than the thickness of the slide support (7).

8. The anti-creep device for a prefabricated T-beam bridge according to claim 4, characterized in that: The length of the first embedded steel plate (9) and the second embedded steel plate (11) is 250-350 mm, and the width is 200-260 mm.

9. The anti-creep device for a prefabricated T-beam bridge according to any one of claims 1 to 8, characterized in that: The gap between the slide plate support (7) and the stainless steel slide plate (6) is 15-20 mm.