CN117868005A - Single-column pier bridge anti-overturning self-balancing device - Google Patents

Abstract

The invention discloses an anti-overturning self-balancing device for a single-column pier bridge, which comprises a girder and a column pier, wherein the girder is erected at the top of the column pier, and the anti-overturning self-balancing device comprises: the two groups of anti-overturning assemblies are fixed at the bottom of the main beam and are respectively positioned at two sides of the column pier along the width direction of the main beam, and the two groups of anti-overturning assemblies are used for adjusting the gravity center of the main beam; the two groups of switch assemblies are respectively arranged at two sides of the column pier along the width direction of the main beam, and are respectively connected with the anti-overturning assemblies far away from each other in a communication manner so as to control the anti-overturning assemblies to be opened or closed; the switch assembly comprises a first switch and a second switch, when the first switch is contacted with the second switch, the anti-overturning assembly is opened, and when the first switch is separated from the second switch, the anti-overturning assembly is closed; when the girder is overturned, the switch component can control the anti-overturning component to adjust the gravity center of the girder, so that the girder is balanced under the action of the lever principle.

Description

Single-column pier bridge anti-overturning self-balancing device

Technical Field

The invention relates to the field of bridge reinforcement, in particular to an anti-overturning self-balancing device for a single-column pier bridge.

Background

The bridge is a building crossing rivers, lakes, roads or other obstacles, is generally composed of bridge piers, bridge decks and other supporting structures, is taken as an important traffic facility, and has important significance for people to travel and develop economy; along with the development of society and the improvement of living standard of people, the automobile industry is continuously advanced, and meanwhile, the problems of rapid increase of bridge traffic volume, improvement of automobile carrying capacity and the like are brought, so that bridge construction is also continuously developed and improved.

The single pier bridge has the advantages of small occupied space of the bridge pier, large space under the bridge, simple construction process, low construction cost and the like, but for the traffic industry of the current high-speed development, the single pier bridge has the problems of low bearing capacity, poor transverse stability, weak shock insulation performance and the like, wherein the transverse stability is the main problem of the single pier bridge at present, and as the single pier is generally supported by a single support, the single pier is difficult to provide effective torsion resistance constraint, and under the action of extreme eccentric load, once the anti-overturning capacity of the single pier is insufficient to resist eccentric torque, the whole bridge panel can be overturned.

Disclosure of Invention

The invention aims to provide an anti-overturning self-balancing device for a single-column pier bridge, which is used for solving the problems of poor transverse stability and insufficient anti-overturning capacity of the single-column pier bridge in the prior art.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

an anti-overturning self-balancing device for a single-pier bridge, wherein the bridge comprises a main girder and a pier, the main girder is erected at the top of the pier, and the anti-overturning self-balancing device comprises:

the two groups of anti-overturning assemblies are fixed at the bottom of the main beam and are respectively positioned at two sides of the pier along the width direction of the main beam, and the two groups of anti-overturning assemblies are used for adjusting the gravity center of the main beam;

the two groups of switch assemblies are respectively arranged at two sides of the column pier along the width direction of the main beam, and are respectively in communication connection with the anti-overturning assemblies far away from each other so as to control the anti-overturning assemblies to be turned on or turned off;

the switch assembly comprises a first switch and a second switch, the first switch is arranged at the bottom of the main beam, the second switch is supported on the column pier, when the first switch and the second switch are in contact, the anti-overturning assembly is started, and when the first switch and the second switch are separated, the anti-overturning assembly is closed.

According to the technical means, through the two groups of anti-overturning assemblies and the two groups of switch assemblies, when the girder is overturned, the switch assembly on one side is pressed down to control the anti-overturning assembly on the other side to be opened, so that the gravity center of the girder is adjusted, the girder balances the overturning of the girder under the action of the lever principle, and particularly, when the girder is overturned downwards to a certain extent to one side, the first switch and the second switch on one side are pressed down by the girder to be contacted, so that the anti-overturning assembly on the other side is opened, the gravity center of the girder is adjusted, and the girder is balanced, so that the single-column pier bridge has good transverse stability and strong anti-overturning capability.

Further, the switch assembly further comprises an elastic piece, one end of the elastic piece is connected with the bottom of the main beam, and the other end of the elastic piece is connected with the column pier.

According to the technical means, when the main beam is overturned, the elastic piece is downwards pressed on one side of the main beam, the elastic piece is stretched and pressed on the other side of the main beam, a certain supporting force and a certain pulling force are provided for the main beam by the elastic piece, and specifically, when the overturning degree of the main beam is smaller, the main beam can be balanced by the supporting force and the pulling force provided by the elastic piece, when the overturning degree of the main beam is increased and exceeds the supporting force and the pulling force provided by the elastic piece, the first switch and the second switch on one side of the main beam are downwards pressed, the anti-overturning assembly on the other side is opened, the gravity center of the main beam is adjusted, and the main beam is balanced, so that the single-column pier bridge is good in transverse stability and strong in anti-overturning capacity.

Further, an annular reinforcing beam is fixed at the upper end of the column pier, and the other end of the elastic piece is connected with the annular reinforcing beam.

According to the technical means, the annular reinforcing beam improves the bearing capacity, the anti-seismic performance and the stress performance of the column pier, and facilitates the construction and maintenance of the bridge, so that the overall performance and the service life of the bridge are improved.

Further, the elastic piece is a spiral spring, the first switch is an early warning sensing piece, the second switch is an early warning sensing shaft, the early warning sensing shaft is arranged in the spiral spring in a penetrating mode, the bottom of the early warning sensing shaft is fixed on the annular reinforcing beam, the top of the early warning sensing shaft corresponds to the early warning sensing piece, and a gap exists between the top of the early warning sensing shaft and the early warning sensing piece.

According to the technical means, the spiral spring is convenient to install and has larger elastic deformation capacity, vibration and impact can be absorbed, so that the shock absorption performance is good, when the girder is overturned, one side of the girder compresses the spiral spring, so that the early warning sensing piece on the side is driven to approach the top of the early warning sensing shaft, the other side of the girder stretches the spiral spring, so that the early warning sensing piece on the side is driven to be far away from the top of the early warning sensing shaft, when the spiral spring is compressed to the position insufficient to support the inclined girder, the early warning sensing piece is contacted with the top of the early warning sensing shaft, the anti-overturning assembly on the other side is enabled to be opened, the gravity center of the girder is adjusted, the girder is balanced, and meanwhile, the early warning sensing piece and the early warning sensing shaft which are contacted can provide certain supporting force for the inclined girder, and the anti-overturning capacity is strong, the stability is good, and the shock absorption effect is good.

Further, the anti-overturning assembly comprises a counterweight and a driving device, the driving device is in driving connection with the counterweight, the driving device is in communication connection with the corresponding switch assembly, and the driving device is used for driving the counterweight to move along the width direction of the main beam.

According to the technical means, when the main beam is overturned, the spiral spring is compressed on one side of the main beam, the spiral spring is stretched on the other side of the main beam, when the spiral spring is compressed to be insufficient to support the inclined main beam, the early warning sensing piece is in contact with the top of the early warning sensing shaft, so that the driving device on the other side is started, the driving device drives the counterweight to move along the width direction of the main beam in the direction away from the pier, the gravity center of the main beam is regulated by the main beam under the action of the lever principle, so that the main beam is balanced, and when the early warning sensing piece is separated from the top of the early warning sensing shaft, the counterweight is reset to the initial position, and the structure is simple and the anti-overturning capacity is strong.

Further, the anti-overturning assembly further comprises a mounting box, a sliding groove matched with the counterweight device is formed in the mounting box, and the counterweight device and the driving device are both arranged in the sliding groove.

According to the technical means, the length of the sliding groove is arranged along the width direction of the main beam, and the sliding groove is guided to the counterweight device, so that the counterweight device has better stability in the moving process and is convenient to install.

Further, buffer pieces are arranged on two sides of the counterweight device, and the buffer pieces are used for buffering impact force between the counterweight device and inner walls at two ends of the sliding groove.

According to the technical means, the driving device drives the counterweight device to move along the chute, the two sides of the counterweight device are easy to collide with the inner walls at the two ends of the chute, the buffer piece is arranged, so that the collision force between the counterweight device and the inner walls at the two ends of the chute is reduced, the service lives of the counterweight device and the mounting box are prolonged, and the anti-seismic effect is good.

Further, the anti-overturning assembly further comprises a triggering device and an alarm device, wherein the triggering device is arranged on the inner wall of one end of the chute far away from the pier and can be in interference with the counterweight device, and the triggering device is in communication connection with the alarm device.

According to the technical means, when the driving device drives the counterweight to move in the chute in the direction away from the pier so that the main beam adjusts the gravity center of the main beam under the action of the lever principle, and the stroke of the counterweight is maximum and is in conflict with the triggering device, the main beam is overturned to be unbalanced, and the alarm device is started so as to prompt the staff to be convenient for further defense and dredging preparation.

Further, the driving device is an electric sliding rail, and the length direction of the electric sliding rail is arranged along the width direction of the main beam.

According to the technical means, the electric sliding rail provides driving force for the counterweight and guides the counterweight, so that the counterweight has good stability in the moving process, and is convenient to install.

Further, grooves are formed in the annular reinforcing beams.

According to the technical means, the groove can play a role in reducing the dead weight of the annular reinforcing beam, and can be used for placing the adhesive so that the annular reinforcing beam can be firmly fixed on the column pier.

The beneficial effects realized by the invention are as follows:

according to the invention, through the two groups of anti-overturning assemblies and the two groups of switch assemblies, when the main beam is overturned, the switch assembly on one side is pressed down to control the anti-overturning assembly on the other side to be opened, so that the gravity center of the main beam is adjusted, the main beam balances the overturning of the main beam under the action of a lever principle, and particularly, when the main beam is overturned downwards to a certain extent to one side, the first switch and the second switch on one side are pressed down by the main beam to be contacted, so that the anti-overturning assembly on the other side is opened, and the gravity center of the main beam is adjusted, so that the main beam is balanced, and the single-column pier bridge has good transverse stability and strong anti-overturning capability.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a top view of FIG. 1 in accordance with the present invention;

FIG. 3 is an enlarged view of FIG. 4 of FIG. 1 in accordance with the present invention;

FIG. 4 is a schematic view of an anti-overturning assembly according to the present invention;

fig. 5 is an isometric view of an anti-toppling assembly of the present invention.

Wherein, 1-main beam; 2-column piers; 3-anti-toppling assembly; 31-a counterweight; 32-a driving device; 33-mounting a box; 34-sliding grooves; 35-a buffer; 36-triggering means; a 4-switch assembly; 41-a first switch; 42-a second switch; 43-elastic member; 5-annular reinforcing beams; 51-groove.

The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the same or similar reference numerals correspond to the same or similar components; the terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limiting the present patent.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

It should be noted that, in the case of no conflict, the embodiments and technical features in the embodiments may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the gist of the present application and should not be construed as undue limitation to the present application.

For the purposes, technical solutions and advantages of the embodiments of the present application to be more apparent, the specific technical solutions of the present application will be described in further detail below with reference to the accompanying drawings in the embodiments of the present application. The following examples are illustrative of the present application, but are not intended to limit the scope of the present application.

In the present embodiments, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the embodiments herein, unless explicitly specified and limited otherwise, the term "connected" is to be construed broadly, and for example, "connected" may be either a fixed connection, a removable connection, or an integral body; can be directly connected or indirectly connected through an intermediate medium.

In the present embodiments, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

The technical scheme of the invention is described in detail below with reference to the specific drawings.

In this embodiment, a single pier bridge anti-overturning self-balancing device, as shown in fig. 1 and 3, the bridge includes girder 1 and pier 2, girder 1 erects the top at pier 2, anti-overturning self-balancing device includes: the two groups of anti-overturning assemblies 3 are respectively fixed at the bottom of the main beam 1 and are respectively positioned at two sides of the column pier 2 along the width direction of the main beam 1, and the two groups of anti-overturning assemblies 3 are used for adjusting the gravity center of the main beam 1; the two groups of switch assemblies 4 are respectively arranged at two sides of the column pier 2 along the width direction of the main beam 1, and the two groups of switch assemblies 4 are respectively connected with the anti-overturning assemblies 3 which are far away from each other in a communication manner so as to control the anti-overturning assemblies 3 to be opened or closed; the switch assembly 4 comprises a first switch 41 and a second switch 42, the first switch 41 is installed at the bottom of the main beam 1, the second switch 42 is supported on the pier 2, when the first switch 41 and the second switch 42 are in contact, the anti-overturning assembly 3 is opened, and when the first switch 41 and the second switch 42 are separated, the anti-overturning assembly 3 is closed.

In this embodiment, when the girder 1 is turned over, the switch assembly 4 on one side of the girder 1 is pressed down to control the anti-overturning assembly 3 on the other side to be opened, so as to adjust the gravity center of the girder 1, so that the girder 1 balances the overturning of the girder 1 under the action of the lever principle, specifically, when the girder 1 is pressed down to a certain extent to one side of the girder, the first switch 41 and the second switch 42 on one side of the girder 1 are pressed down to be contacted, so that the anti-overturning assembly 3 on the other side is opened, and the gravity center of the girder 1 is adjusted, so that the girder is balanced, and the single-column pier bridge has good transverse stability and strong anti-overturning capability.

In this embodiment, the switch assembly 4 further includes an elastic member 43, one end of the elastic member 43 is connected to the bottom of the main beam 1, and the other end of the elastic member 43 is connected to the pier 2.

In this embodiment, as shown in fig. 2 and fig. 3, the elastic member 43 is provided to provide a supporting force and a pulling force for the main beam 1, specifically, when the overturning degree of the main beam 1 is smaller, the supporting force and the pulling force provided by the elastic member 43 can balance the main beam 1, when the overturning degree of the main beam 1 is increased and exceeds the supporting force and the pulling force provided by the elastic member 43, the first switch 41 and the second switch 42 on one side of the main beam 1 are pressed down to contact, so that the anti-overturning assembly 3 on the other side is opened, thereby adjusting the gravity center of the main beam 1, and making the main beam 1 balanced, the two-stage anti-overturning system enables the single-pier bridge to have good transverse stability and strong anti-overturning capability.

In this embodiment, an annular reinforcing beam 5 is fixed at the upper end of the pier 2, and the other end of the elastic member 43 is connected with the annular reinforcing beam 5; as shown in fig. 1, the annular reinforcing beam 5 of the embodiment improves the bearing capacity, the anti-seismic performance and the stress performance of the column pier 2, and facilitates the construction and maintenance of the bridge, thereby increasing the overall performance and the service life of the bridge.

Further, as a preferred embodiment, the elastic member 43 is a coil spring, the first switch 41 is an early warning sensing piece, the second switch 42 is an early warning sensing shaft, the early warning sensing shaft is inserted into the coil spring, the bottom of the early warning sensing shaft is fixed on the annular reinforcing beam 5, the top of the early warning sensing shaft corresponds to the early warning sensing piece, and a gap exists between the top of the early warning sensing shaft and the early warning sensing piece.

In this embodiment, coil spring easy to assemble, have great elastic deformation ability, can absorb vibration and impact quantity, thereby shock-absorbing capacity is good, as shown in fig. 3, specifically, when girder 1 takes place to topple, girder 1 one side compression coil spring, thereby drive the early warning sense piece of this side to be close to early warning sensing axle top, girder opposite side extension coil spring, thereby drive the early warning sense piece of this side keep away from early warning sensing axle top, when coil spring compresses to insufficient support girder 1 of slope, early warning sense piece contacts with early warning sensing axle top, make the anti-toppling subassembly 3 of opposite side open, adjust girder 1's focus, make girder 1 balanced, early warning sense piece and early warning sensing axle that contacts can provide certain holding power to the girder of slope simultaneously, anti-toppling ability is strong, stability is good, shock attenuation is effectual.

In this embodiment, the anti-overturning assembly 3 includes a counterweight 31 and a driving device 32, the driving device 32 is in driving connection with the counterweight 31, and the driving device 32 is in communication connection with the corresponding switch assembly 4, and the driving device 32 is used for driving the counterweight 31 to move along the width direction of the main beam 1.

In this embodiment, as shown in fig. 4 and 5, when the girder 1 is overturned, one side of the girder 1 compresses the coil spring, and the other side of the girder stretches the coil spring, when the coil spring is compressed to a level insufficient to support the inclined girder, the early warning sensing piece contacts with the top of the early warning sensing shaft, so that the driving device 32 on the other side is opened, and the driving device 32 drives the counterweight 31 to move along the width direction of the girder 1 in a direction away from the pier 2, so that the gravity center of the girder 1 is adjusted by the girder 1 under the action of the lever principle, the girder 1 is balanced, and when the early warning sensing piece is separated from the top of the early warning sensing shaft, the counterweight 31 is reset to the initial position, and the structure is simple, and the anti-overturning capability is strong.

In this embodiment, the anti-overturning assembly 3 further includes a mounting box 33, a chute 34 matched with the counterweight 31 is disposed in the mounting box 33, and both the counterweight 31 and the driving device 32 are mounted in the chute 35.

In this embodiment, as shown in fig. 4 and 5, the chute 34 is disposed in the mounting box 33, and the length of the chute 34 is set along the width direction of the main beam, so that the counterweight 31 has a function of guiding the counterweight 31, so that the counterweight 31 has better stability in the moving process and is convenient to mount.

In this embodiment, the buffer members 35 are mounted on both sides of the counterweight 31, and the buffer members 35 are used for buffering the impact force between the counterweight 31 and the inner walls of both ends of the chute 34.

In the process of driving the counterweight 31 by the driving device 32 to move along the chute 34, as shown in fig. 4 and 5, the two sides of the counterweight are easy to collide with the inner walls at the two ends of the chute 34, and the buffer member 35 is provided to reduce the collision force between the counterweight 31 and the inner walls at the two ends of the chute 34, thereby improving the service lives of the counterweight 31 and the installation box 33, and achieving good anti-seismic effect.

In this embodiment, the anti-overturning assembly 3 further includes a triggering device 36 and an alarm device, where the triggering device 36 is installed on an inner wall of an end of the chute 34 away from the pier 2 and can collide with the counterweight 31, and the triggering device 36 is in communication connection with the alarm device.

In the embodiment, as shown in fig. 4 and 5, when the driving device 32 drives the counterweight 31 to move in the chute 34 in a direction away from the pier 2 so as to adjust the center of gravity of the main beam 1 under the action of the lever principle, the alarm device is started when the stroke of the counterweight 31 is maximum and is in conflict with the trigger device 36, so as to prompt the staff to be convenient for further defense and dredging preparation; the triggering device 36 may be an alarm button, the alarm button may stretch along the moving direction of the counterweight 31, when the main beam 1 is overturned, the stroke of the counterweight 31 is maximized, and when the main beam 1 is not balanced yet, the counterweight 31 continues to move towards one end far away from the pillar 2, so that the counterweight 31 can collide with the alarm button and press the alarm button, the alarm device is started, when the main beam 1 is balanced, the counterweight 31 is reset to one side of the chute 34 close to the pillar 2, the alarm button automatically rebounds and resets, the alarm device is closed, and the alarm device may be a buzzer alarm or a warning lamp.

In this embodiment, the driving device 32 is an electric sliding rail, and the length direction of the electric sliding rail is set along the width direction of the main beam 1; the electric sliding rail of the embodiment comprises a motor and a double rail, as shown in fig. 5, the motor provides driving force for the counterweight 31, and the double rail guides the counterweight 31, so that the counterweight 31 has good stability in the moving process, and is convenient to install.

In this embodiment, the annular reinforcing beam 5 is provided with a groove 51; as shown in fig. 2, the groove 51 can serve both to reduce the dead weight of the annular reinforcing beam 5 and to place an adhesive such as epoxy resin so that the annular reinforcing beam 5 can be more firmly fixed to the pier 2.

The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments. The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the claims, and all equivalent structures or equivalent processes using the descriptions and drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the claims of the present application.

Claims (10)

1. The utility model provides a single pier bridge antidumping self-balancing unit, the bridge includes girder (1) and pier (2), girder (1) erect at the top of pier (2), its characterized in that, antidumping self-balancing unit includes:

the two groups of anti-overturning assemblies (3) are respectively fixed at the bottom of the main beam (1) and are respectively positioned at two sides of the column pier (2) along the width direction of the main beam (1), and the two groups of anti-overturning assemblies (3) are used for adjusting the gravity center of the main beam (1);

the two groups of switch assemblies (4) are respectively arranged at two sides of the column pier (2) along the width direction of the main beam (1), and the two groups of switch assemblies (4) are respectively connected with the anti-overturning assemblies (3) which are far away from each other in a communication manner so as to control the anti-overturning assemblies (3) to be opened or closed;

the switch assembly (4) comprises a first switch (41) and a second switch (42), the first switch (41) is arranged at the bottom of the main beam (1), the second switch (42) is supported on the column pier (2), when the first switch (41) and the second switch (42) are in contact, the anti-overturning assembly (3) is started, and when the first switch (41) and the second switch (42) are separated, the anti-overturning assembly (3) is closed.

2. The single pier bridge anti-overturning self-balancing device according to claim 1, wherein the switch assembly (4) further comprises an elastic piece (43), one end of the elastic piece (43) is connected with the bottom of the main beam (1), and the other end of the elastic piece (43) is connected with the pier (2).

3. The single pier bridge anti-overturning self-balancing device according to claim 2, wherein an annular reinforcing beam (5) is fixed at the upper end of the pier (2), and the other end of the elastic piece (43) is connected with the annular reinforcing beam (5).

4. The single pier bridge anti-overturning self-balancing device according to claim 3, wherein the elastic piece (43) is a spiral spring, the first switch (41) is an early warning sensing piece, the second switch (42) is an early warning sensing shaft, the early warning sensing shaft is arranged in the spiral spring in a penetrating mode, the bottom of the early warning sensing shaft is fixed on the annular reinforcing beam (5), the top of the early warning sensing shaft corresponds to the early warning sensing piece, and a gap exists between the top of the early warning sensing shaft and the early warning sensing piece.

5. A single pier bridge anti-overturning self-balancing device according to any one of claims 1-4, wherein the anti-overturning assembly (3) comprises a counterweight (31) and a driving device (32), the driving device (32) is in driving connection with the counterweight (31), the driving device (32) is in communication connection with a corresponding switch assembly (4), and the driving device (32) is used for driving the counterweight (31) to move along the width direction of the main beam (1).

6. The single pier bridge anti-overturning self-balancing device according to claim 5, wherein the anti-overturning assembly (3) further comprises a mounting box (33), a sliding groove (34) matched with the counterweight (31) is arranged in the mounting box (33), and the counterweight (31) and the driving device (32) are both arranged in the sliding groove (35).

7. The single pier bridge anti-overturning self-balancing device according to claim 6, wherein the buffer pieces (35) are arranged on two sides of the counterweight device (31), and the buffer pieces (35) are used for buffering impact force between the counterweight device (31) and inner walls at two ends of the sliding groove (34).

8. The single pier bridge anti-overturning self-balancing device according to claim 6, wherein the anti-overturning assembly (3) further comprises a triggering device (36) and an alarm device, the triggering device (36) is arranged on the inner wall of one end, far away from the pier (2), of the sliding groove (34) and can be abutted against the counterweight (31), and the triggering device (36) is in communication connection with the alarm device.

9. The single pier bridge anti-overturning self-balancing device according to claim 5, wherein the driving device (32) is an electric sliding rail, and the length direction of the electric sliding rail is arranged along the width direction of the main beam (1).

10. The single pier bridge anti-overturning self-balancing device according to claim 5, wherein the annular reinforcing beam (5) is provided with a groove (51).