A type of anti-overturning reinforcement structure for single-column pier bridge abutments

Abstract

This utility model belongs to the field of bridge reinforcement technology, specifically disclosing an anti-overturning reinforcement structure for a single-column pier bridge abutment, comprising: a first fixed member, a second fixed member, a first diagonal member, and a second diagonal member; the first fixed member and the second fixed member are symmetrically arranged at the bottom end of the main beam of the bridge; one end of the first diagonal member and the second diagonal member are hinged, and the other end is respectively connected to the first fixed member and the second fixed member, and a portion thereof is hinged to the surface of the abutment; by transmitting, converting, and adjusting the direction of force through multiple members, the eccentric load originally applied to one side of the main beam of the bridge is effectively transferred to the other side, realizing a balanced distribution of force on both sides of the main beam, thereby enhancing the anti-overturning stability of the bridge; secondly, the anti-overturning reinforcement structure adopts a modular design, which is easy to install, disassemble, and replace, and is suitable for the reinforcement and renovation of existing single-column pier bridges, which can significantly reduce construction difficulty and maintenance costs.

Description

Technical Field

[0001] This utility model belongs to the field of bridge reinforcement technology, and more specifically, relates to an anti-overturning reinforcement structure for the abutment of a single-column pier bridge. Background Technology

[0002] Single-column pier bridges, as a common bridge structure, were widely used in early transportation construction due to their advantages such as space saving and convenient construction. The design concept of single-column pier bridges stems from their unique stress characteristics and structural form. Their pier tops are relatively narrow, typically using a single support or a small lateral support spacing, which simplifies construction processes and reduces costs to some extent. However, with the increase in traffic volume and the extension of bridge service life, the overturning resistance of single-column pier bridges has gradually become a prominent issue. Especially in curved bridges, when the bridge deck is subjected to accidental overloaded vehicle loads located at the most unfavorable lateral eccentric loading position, the main girder will experience significant torque and torsional deformation. In this situation, the stress on the end abutments is severely uneven, which may even lead to negative reaction forces on the supports, resulting in serious consequences such as support detachment or girder overturning. This problem not only threatens the structural safety of the bridge but can also seriously affect traffic operation, thus becoming a key technical challenge in the field of bridge engineering.

[0003] To address the overturning issue of single-column pier bridges, existing technologies primarily focus on enhancing the lateral stability of the bridge structure, attempting to improve its overturning resistance through reinforcement measures. Specifically, common reinforcement schemes involve adding pull-out protection devices to existing abutments, such as anchor bolts, pull-out bearings, or other forms of lateral restraint structures. These devices increase the lateral restraint between the abutment and the main girder, attempting to prevent the main girder from overturning or the bearings from coming loose under excessively heavy loads. Furthermore, some reinforcement schemes also attempt to improve the stress distribution on the bearings by increasing the size of the abutment cap beam or increasing the number of bearings, thereby enhancing the overall stability of the bridge.

[0004] However, existing reinforcement methods mainly focus on local modifications to the abutments, with the core idea being to passively cope with the effects of excessive loads by enhancing the abutments' tensile strength. While these methods can improve the overturning resistance of bridges to some extent, their applicability and effectiveness are limited in many ways. Furthermore, existing reinforcement methods are passive, meaning they only function under excessive loads; however, the overturning problem of single-column pier bridges is essentially due to inherent defects in their structural design. Passive reinforcement cannot fundamentally solve these design flaws, but can only alleviate the problem to a certain extent; when the load is excessive and the load location is extremely unfavorable, existing reinforcement measures may still not be effective in preventing overturning. Utility Model Content

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this utility model provides an anti-overturning reinforcement structure for the abutments of single-column pier bridges. By using multiple members to transmit, convert, and adjust the direction of forces, the eccentric load originally applied to one side of the main beam of the bridge is effectively transferred to the other side, achieving a balanced distribution of forces on both sides of the main beam, thereby enhancing the bridge's anti-overturning stability. Furthermore, the anti-overturning reinforcement structure adopts a modular design, making it easy to install, disassemble, and replace without damaging the original structure. It is suitable for the reinforcement and renovation of existing single-column pier bridges, significantly reducing construction difficulty and maintenance costs.

[0006] To achieve the above objectives, this utility model provides an anti-overturning reinforcement structure for the abutment of a single-column pier bridge, comprising: a first fixed member, a second fixed member, a first diagonal member, and a second diagonal member, wherein:

[0007] The first fixing member and the second fixing member are symmetrically arranged at the bottom end of the main beam of the bridge;

[0008] One end of the first diagonal bar and the second diagonal bar are hinged together, and the other end is connected to the first fixed member and the second fixed member respectively, and a portion of them are hinged to the surface of the bridge abutment.

[0009] Furthermore, both the first fixing member and the second fixing member are fixedly connected to the bottom end of the main beam of the bridge via connectors.

[0010] Furthermore, the connector includes: a connecting anchor bolt, a connecting plate, a connecting sleeve, and a supporting rib; the connecting plate is fixedly connected to the bottom end of the bridge main beam through multiple connecting anchor bolts; the two sides of the supporting rib are respectively fixedly connected to the outside of the connecting sleeve and the bottom end of the connecting plate.

[0011] Furthermore, the inner diameter of the connecting sleeve is adapted to the outer diameters of the first fixing rod and the second fixing rod, and it is fixedly connected to the first fixing rod and the second fixing rod respectively by welding.

[0012] Furthermore, the inner diameter of the connecting sleeve is not less than the outer diameter of the first fixing rod and the second fixing rod, and it is connected to the first fixing rod and the second fixing rod respectively by bolt connection.

[0013] Furthermore, the first fixing member is vertically installed at the bottom end of the main beam of the bridge via the connector;

[0014] The second fixing member is vertically installed at the bottom end of the main beam of the bridge via the connector.

[0015] Furthermore, there is an included angle β between the first diagonal bar and the second diagonal bar, and the included angle β ranges from 30° to 90°.

[0016] Furthermore, the length of the first fixing member is the same as the length of the second fixing member;

[0017] The length of the first diagonal bar is the same as the length of the second diagonal bar.

[0018] Furthermore, the components of the anti-overturning reinforcement structure are made of rust-resistant metal materials.

[0019] Furthermore, the two anti-overturning reinforcement structures are symmetrically arranged on both sides of the abutment along the longitudinal direction of the main beam of the bridge.

[0020] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects:

[0021] (1) The anti-overturning reinforcement structure of this utility model transmits, converts and adjusts the force through multiple rods, effectively transferring the eccentric load originally applied to one side of the main beam of the bridge to the other side, realizing the balanced distribution of the force on both sides of the main beam, thereby enhancing the anti-overturning stability of the bridge; secondly, the anti-overturning reinforcement structure adopts a modular design, which is easy to install, disassemble and replace without damaging the original structure, and is suitable for the reinforcement and renovation of existing single-column pier bridges, which can significantly reduce the construction difficulty and maintenance cost.

[0022] (2) The anti-overturning reinforcement structure of this utility model can effectively transfer load and avoid the generation of lateral force by vertically setting the first fixed rod and the second fixed rod, so that the fixed rod can effectively resist bending and shear deformation; secondly, the connection can effectively avoid the installation matching problem caused by construction error or deformation of the bridge main beam bottom surface.

[0023] (3) The anti-overturning reinforcement structure of this utility model optimizes the force transmission path by designing the included angle between the first and second inclined rods, reduces the loss of the component force in the vertical direction, and effectively avoids the generation of unnecessary lateral forces, thereby enhancing the overall stability and load-bearing efficiency of the structure. At the same time, it takes into account the material properties, structural dimensions and expected load conditions in engineering practice, ensuring that the safety and durability of the bridge are maximized.

[0024] (4) The anti-overturning reinforcement structure of this utility model can effectively achieve uniform load distribution by arranging multiple rods of equal length and symmetrically. When one side is subjected to eccentric load, the rods of equal length on both sides can transmit the force synchronously, effectively avoiding local stress concentration caused by torque imbalance and improving the adaptability to curved bridges. At the same time, the standardized rods simplify the construction process, so that there is no need to repeatedly adjust the alignment during installation, and the same type of parts can be directly replaced for later maintenance. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the anti-overturning reinforcement structure according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure in which the connecting sleeve is connected to the first fixed rod by welding in an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure in which the connecting sleeve is connected to the first fixed rod by bolts in an embodiment of the present invention.

[0028] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0029] 1-Abutment, 2-Main beam of bridge, 3-First fixed member, 4-Second fixed member, 5-First diagonal member, 6-Second diagonal member, 7-Connector, 71-Connecting anchor bolt, 72-Connecting plate, 73-Connecting sleeve, 74-Supporting rib. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0031] like Figures 1 to 3 As shown, one embodiment of this utility model provides an anti-overturning reinforcement structure for a single-column pier bridge abutment, comprising: a first fixed member 3, a second fixed member 4, a first diagonal member 5, and a second diagonal member 6; the first fixed member 3 and the second fixed member 4 are symmetrically arranged at the bottom end of the main beam 2 of the bridge; one end of the first diagonal member 5 and the second diagonal member 6 are hinged together, and the other end is respectively connected to the first fixed member 3 and the second fixed member 4, and a portion thereof is hinged to the surface of the abutment 1. During use, the force is transmitted, converted, and its direction is adjusted through multiple members, effectively transferring the eccentric load originally applied to one side of the main beam 2 to the other side, achieving a balanced distribution of force on both sides of the main beam, thereby enhancing the bridge's anti-overturning stability; secondly, the anti-overturning reinforcement structure adopts a modular design, which is easy to install, disassemble, and replace without damaging the original structure, making it suitable for the reinforcement and renovation of existing single-column pier bridges, significantly reducing construction difficulty and maintenance costs.

[0032] like Figures 1 to 3As shown, both the first fixing member 3 and the second fixing member 4 are fixedly connected to the bottom end of the main bridge beam 2 through the connector 7, so as to improve the connection stability between the first fixing member 3 and the second fixing member 4 and the main bridge beam 2 and avoid local stress concentration.

[0033] like Figure 2 and Figure 3 As shown, the connector 7 includes: a connecting anchor bolt 71, a connecting plate 72, a connecting sleeve 73, and a supporting rib plate 74; the connecting plate 72 is fixedly connected to the bottom end of the bridge main beam 2 through multiple connecting anchor bolts 71; the two sides of the supporting rib plate 74 are respectively fixedly connected to the outside of the connecting sleeve 73 and the bottom end of the connecting plate 72. It can be understood that by inserting the first fixing rod 3 and the second fixing rod 4 into the connecting sleeve 73 and connecting them to the connecting sleeve 73, the connection stability between the first fixing rod 3 and the second fixing rod 4 and the bridge main beam 2 can be effectively enhanced.

[0034] In an optional embodiment, the inner diameter of the connecting sleeve 73 is adapted to the outer diameter of the first fixing rod 3 and the second fixing rod 4, and it is fixedly connected to the first fixing rod 3 and the second fixing rod 4 respectively by welding.

[0035] In an optional embodiment, the inner diameter of the connecting sleeve 73 is not less than the outer diameter of the first fixing rod 3 and the second fixing rod 4, and it is connected to the first fixing rod 3 and the second fixing rod 4 respectively by bolt connection, so as to improve the adaptability of the connecting piece 7 to the first fixing rod 3 and the second fixing rod 4 of different sizes while meeting the connection strength requirements.

[0036] In an optional embodiment, the first fixing member 3 is vertically disposed at the bottom end of the bridge main beam 2 via the connector 7; the second fixing member 4 is vertically disposed at the bottom end of the bridge main beam 2 via the connector 7. It is understood that by vertically distributing the first fixing member 3 and the second fixing member 4, loads can be effectively transferred, lateral forces can be avoided, and the fixing members can effectively resist bending and shear deformation. Furthermore, the connector 7 effectively avoids installation matching problems caused by construction errors or deformations on the bottom surface of the bridge main beam 2.

[0037] like Figure 1As shown, there is an included angle β between the first diagonal brace 5 and the second diagonal brace 6, and the included angle β is less than 180°. Preferably, the included angle β is in the range of 30°-90°, thereby optimizing the force transmission path, reducing the loss of the component force in the vertical direction, and effectively avoiding the generation of unnecessary lateral forces, thereby enhancing the overall stability and load-bearing efficiency of the structure. At the same time, it takes into account the material properties, structural dimensions, and expected load conditions in engineering practice, ensuring that the safety and durability of the bridge are maximized.

[0038] In an optional embodiment, the length of the first fixed member 3 is the same as the length of the second fixed member 4; the length of the first diagonal member 5 is the same as the length of the second diagonal member 6. It is understood that by arranging multiple members of equal length and symmetrically, the load can be effectively distributed evenly. When a single side is subjected to an eccentric load, the members of equal length on both sides can transmit the force synchronously, effectively avoiding local stress concentration caused by torque imbalance and improving adaptability to curved bridges. Simultaneously, standardized members simplify the construction process, eliminating the need for repeated alignment adjustments during installation, and allowing for direct replacement of the same model of components for later maintenance.

[0039] Furthermore, the components of the anti-overturning reinforcement structure are made of rust-resistant metal materials to improve the overall strength and service life of the anti-overturning reinforcement structure.

[0040] In an optional embodiment, the two anti-overturning reinforcement structures are symmetrically arranged on both sides of the abutment 1 along the longitudinal direction (vehicle movement direction) of the main beam 2 of the bridge, in order to further improve the overturning resistance of the beam.

[0041] The working principle of this utility model is as follows: After the anti-overturning reinforcement structure is installed at the abutment of the single-column pier bridge, if the uneven load causes the eccentric load to act downward on one side of the main beam 2 of the bridge, the force is transmitted, converted and adjusted in direction through the rod connection structure composed of the first fixed rod 3, the second fixed rod 4, the first diagonal rod 5 and the second diagonal rod 6. At the same time, the rod connection structure is rigidly fixed to the main beam 2 of the bridge through the connector 7, ensuring the continuous and stable force transmission path and avoiding node slippage or loosening. Thus, the eccentric load is stably transmitted to the other side of the main beam 2 of the bridge, so that the overall structure of the main beam 2 of the bridge is subjected to balanced force, thereby achieving the purpose of preventing the beam from overturning.

[0042] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0043] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0044] In this invention, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model, and not to limit it; those skilled in the art will readily understand that the above description is only a preferred embodiment of this utility model, and is not intended to limit this utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A structure for overturning prevention and reinforcement at the abutment of a single-column pier bridge, characterized in that, include: The first fixed member (3), the second fixed member (4), the first diagonal member (5), and the second diagonal member (6) are, among which: The first fixing member (3) and the second fixing member (4) are symmetrically arranged at the bottom end of the main beam (2) of the bridge; One end of the first diagonal bar (5) and the second diagonal bar (6) are hinged together, and the other end is connected to the first fixed member (3) and the second fixed member (4) respectively, and a portion of them are hinged to the surface of the bridge abutment (1).

2. The anti-overturning reinforcement structure according to claim 1, characterized in that, Both the first fixing member (3) and the second fixing member (4) are fixedly connected to the bottom end of the main beam (2) of the bridge through the connector (7).

3. The anti-overturning reinforcement structure according to claim 2, characterized in that, The connector (7) includes: a connecting anchor (71), a connecting plate (72), a connecting sleeve (73), and a supporting rib (74); the connecting plate (72) is fixedly connected to the bottom end of the main beam (2) of the bridge through multiple connecting anchors (71); the two sides of the supporting rib (74) are fixedly connected to the outside of the connecting sleeve (73) and the bottom end of the connecting plate (72), respectively.

4. The anti-overturning reinforcement structure according to claim 3, characterized in that, The inner diameter of the connecting sleeve (73) is adapted to the outer diameter of the first fixing rod (3) and the second fixing rod (4), and it is fixedly connected to the first fixing rod (3) and the second fixing rod (4) respectively by welding.

5. The anti-overturning reinforcement structure according to claim 3, characterized in that, The inner diameter of the connecting sleeve (73) is not less than the outer diameter of the first fixing rod (3) and the second fixing rod (4), and it is connected to the first fixing rod (3) and the second fixing rod (4) respectively by bolt connection.

6. The anti-overturning reinforcement structure according to claim 2, characterized in that, The first fixed member (3) is vertically installed at the bottom end of the main beam (2) of the bridge via the connector (7); The second fixing member (4) is vertically installed at the bottom end of the main beam (2) of the bridge via the connector (7).

7. The anti-overturning reinforcement structure according to any one of claims 1-6, characterized in that, An angle β exists between the first diagonal bar (5) and the second diagonal bar (6), and the range of the angle β is 30°-90°.

8. The anti-overturning reinforcement structure according to any one of claims 1-6, characterized in that, The length of the first fixing member (3) is the same as the length of the second fixing member (4); The length of the first diagonal bar (5) is the same as the length of the second diagonal bar (6).

9. The anti-overturning reinforcement structure according to any one of claims 1-6, characterized in that, The components of the anti-overturning reinforcement structure are made of rust-resistant metal materials.

10. The anti-overturning reinforcement structure according to any one of claims 1-6, characterized in that, The two anti-overturning reinforcement structures are symmetrically arranged on both sides of the abutment (1) along the longitudinal direction of the main beam (2) of the bridge.

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