Highway overpass bridge pier protection device

Abstract

The invention belongs to the technical field of road construction equipment, and particularly relates to a highway overpass bridge pier protection device which comprises a plurality of protection modules, the protection modules are arranged around a pier at intervals, each protection module comprises a shell, the bottom of each shell abuts against the ground, a water storage cavity is formed in the lower portion of each shell, and a stress cavity is formed in the upper portion of each shell. A water bag is arranged in the water storage cavity and communicated to the outside of the shell, a negative pressure part is formed at the bottom of the water bag, a cavity is formed between the negative pressure part and the ground, the stress cavity deforms after being stressed to push and extrude the negative pressure part of the water bag to deform and extrude air to be adsorbed to the ground, and a partition plate is arranged in the water storage cavity in a sliding mode and connected to the top of the water bag. A limiting strip is arranged on the side wall of the water storage cavity and used for limiting the partition plate, a first elastic device is arranged in the water storage cavity, the first elastic device is supported between the bottom of the partition plate and the bottom of the water storage cavity, and the first elastic device is used for pushing the partition plate to reset; the protection module can be prevented from transmitting impact force to the pier.

Description

Technical Field

[0001] The invention belongs to the technical field of road construction equipment, and in particular relates to a pier protection device for a highway cross-line bridge. Background Art

[0002] As the main load-bearing part of the bridge, if the pier is damaged, it will seriously affect the safety performance of the bridge and even cause the bridge to collapse. The pier protection device can reduce the impact on the pier to a certain extent and protect the pier from damage. The pier protection device can be divided into two categories according to the installation location (the place where the force is borne), namely indirect structure and direct structure. Each category can be further divided into elastic deformation type, crushing (elastic-plastic) deformation type and displacement (gravity and resistance) type according to the way of absorbing energy. The elastic deformation type relies on the ability of the structure or material to restore elastic deformation to transform and release the impact energy. At the same time, due to the large elasticity and flexibility of the materials or structures used, this type of device can prolong the impact time and thus reduce the impact force. The crushing deformation type absorbs the impact energy by the compression and bending damage of the facility. The displacement type is generally large in size and requires corresponding supporting structures, but its maintenance and management are more complicated, and it is difficult to repair after collision damage.

[0003] Chinese patent CN219195627U discloses a protective pier for a highway bridge, comprising a pier body and a protective buffer mechanism, wherein the protective buffer mechanism is composed of a spring, a steel plate, an air cushion and a binding strap, wherein the steel plates are fixedly mounted on the four sides of the outer wall of the pier body by springs, and the air cushions are movably mounted on the surface of the steel plates by binding straps; when a vehicle loses control and hits the pier, the air cushion can protect the impacted vehicle, and then under the action of the impact force, the spring behind the steel plate will be squeezed and deformed, and at the same time, its own elastic force will offset the impact force, thereby buffering the impact force. This mechanism can protect the impacting vehicle during the impact process, and can also buffer the vehicle, effectively avoiding damage to the pier caused by severe impact.

[0004] However, although the protective devices in the prior art reduce part of the impact force when the vehicle collides, the remaining impact force is ultimately directly transmitted to the bridge pier. Especially when facing engineering vehicles in the construction process, although their speed is relatively slow, generally not exceeding 50km / h (in urban areas) and 55km / h (on highways), the engineering vehicles have a high chassis and heavy weight. Therefore, when they collide with bridge piers during road construction, the general protective devices will transmit a greater force to the bridge piers after being hit, and due to their heavy weight, it is difficult to offset the impact force, which can easily cause damage to the connection between the bridge piers and the bridge deck. Based on this, it is necessary to design a protective device for the piers of highway cross-line bridges. Summary of the invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides a pier protection device for a highway overpass bridge.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A pier protection device for a highway overpass bridge of the present invention comprises a plurality of protection modules, wherein the plurality of protection modules are arranged at intervals around the pier, the protection modules comprise a shell, the bottom of the shell abuts against the ground, the lower part of the shell is a water storage chamber, the upper part of the shell is a force-bearing chamber, a water bag is arranged in the water storage chamber and is connected to the outside of the shell, a negative pressure part is formed at the bottom of the water bag, a cavity is formed between the negative pressure part and the ground, the force-bearing chamber is deformed under force, and the negative pressure part of the water bag is squeezed to deform and squeeze out air for adsorption with the bottom surface.

[0008] Furthermore, a partition is slidably arranged in the water storage cavity, the partition is connected to the top of the water bag, and a limiting strip is arranged on the side wall of the water storage cavity for limiting the position of the partition.

[0009] Furthermore, a first elastic device is provided in the water storage chamber, the first elastic device is supported between the bottom of the partition and the bottom of the water storage chamber, and the first elastic device is used to push the partition to reset.

[0010] Furthermore, a negative pressure port is provided at the bottom of the water storage chamber, a support wall is extended inwardly from the negative pressure port, and the negative pressure part is hung on the support wall.

[0011] Furthermore, the supporting wall is a telescopic wall, a spring is arranged inside the telescopic wall, and the telescopic wall is used to push the negative pressure part to reset when the partition is reset.

[0012] Furthermore, the shell is hinged with a force-bearing plate in the force-bearing cavity, the force-bearing plate is inclined and the bottom is in contact with the partition, and the force on the force-bearing plate is used to push the partition downward.

[0013] Furthermore, a second elastic device is hinged in the force-bearing cavity, and the other end of the second elastic device is hinged to the inner side surface of the force-bearing plate. The second elastic device is used for the force-bearing plate to buffer the impact force.

[0014] Furthermore, a positioning groove is provided on the partition, and the force-bearing plate is forced to move into the positioning groove to form a reset space for the partition.

[0015] Furthermore, a one-way air passage is provided at the bottom of the shell to connect the negative pressure port and the outside of the shell, and a one-way air valve is provided in the one-way air passage.

[0016] Furthermore, the protection module is in an arc-shaped structure, and a plurality of the protection modules are spaced apart from the bridge piers, and the sides of the plurality of protection modules are detachably connected to each other to form an annular structure.

[0017] The beneficial effects of the present invention are:

[0018] (1) The stress-bearing cavity of the protection module can be deformed when subjected to external force. A water bag is placed in the water storage cavity. After the water storage cavity is filled with water at the bottom of the shell, the stability of the shell can be maintained. On the other hand, the negative pressure part structure at the bottom of the water bag will cause the water bag to be squeezed after the stress-bearing cavity is deformed. Therefore, after the water bag is squeezed, the elastic deformation of the negative pressure part can squeeze out the air in the cavity at the bottom of the shell. When the air in the cavity between the bottom of the negative pressure part and the ground is discharged, negative pressure can be generated. The generated negative pressure can adsorb the shell to the ground, which can increase the friction between the shell and the ground to block the impact of engineering vehicles and prevent the impact force from directly acting on the bridge pier.

[0019] (2) The telescopic structure of the supporting wall enables the negative pressure part to move a large distance in a very short time, achieving rapid exhaust. After the protection module is hit, the negative pressure part can quickly absorb the ground, increase the friction between the protection module and the bottom surface and the resistance to the engineering vehicle immediately after the impact, and enable the engineering vehicle to have sufficient braking time within a short distance, thus preventing the engineering vehicle from directly hitting the bridge pier.

[0020] (3) By providing the positioning groove, the force-bearing plate only needs to move backward in one direction once to reset the partition, thereby saving more time and enabling the negative pressure part to achieve adsorption action in a very short time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the bottom structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the internal structure of the side surface of the present invention;

[0025] Figure 4 For the present invention Figure 3 The structural diagram at A in the middle;

[0026] Figure 5 It is a structural schematic diagram of the stress-bearing plate extruding the partition plate of the present invention;

[0027] Figure 6It is a structural schematic diagram of the force-bearing plate of the present invention being pushed into the positioning groove.

[0028] Explanation of the accompanying drawings: 1. Protection module; 101. Shell; 102. Force-bearing chamber; 103. Water storage chamber; 104. Water bag; 105. Force-bearing plate; 106. Second elastic device; 107. Partition; 108. First elastic device; 109. Negative pressure part; 110. One-way air channel; 111. Support wall; 112. One-way air valve; 113. Positioning groove; 2. Bridge pier. DETAILED DESCRIPTION

[0029] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0030] like Figure 1-Figure 6 As shown, a protective device for a pier 2 of a highway overpass bridge of the present invention comprises a plurality of protective modules 1, which are arranged at intervals around the pier 2, and the protective module 1 comprises a shell 101, the lower part of the shell 101 is a water storage chamber 103, the upper part of the shell 101 is a force chamber 102, a water bag 104 is arranged in the water storage chamber 103 and communicated with the outside of the shell 101, a negative pressure part 109 is formed at the bottom of the water bag 104, the bottom of the shell 101 abuts against the ground, and the force chamber 102 is deformed by force to push and squeeze the negative pressure part 109 of the water bag 104 to deform and squeeze out air for adsorption with the bottom surface;

[0031] Although the protective device in the prior art reduces some of the impact force when the vehicle hits, the remaining impact force is ultimately directly transmitted to the bridge pier 2. Especially when facing the construction vehicles in the construction process, although their speed is relatively slow, generally not exceeding 50km / h (in urban areas) and 55km / h (on highways), the chassis of the construction vehicles is relatively high and the weight is heavy. Therefore, when they collide with the bridge pier 2 during the road construction process, the general protective device will transmit a greater force to the bridge pier 2 after being hit, and it is difficult to offset the impact force due to its heavy weight, which can easily cause damage to the connection between the bridge pier 2 and the bridge deck, that is, it cannot meet the requirements of withstanding the impact of construction vehicles on the road surface during the construction process;

[0032] In order to prevent engineering vehicles from colliding with the bridge pier 2 and causing damage during the construction process, the protection module 1 is set around the bridge pier 2 and has a certain distance from the bridge pier 2. When the engineering vehicle collides with the bridge pier 2, the distance between the protection module 1 and the bridge pier 2 can be used as a space for vehicle deceleration and buffering. The outside of the protection module 1 is an integral shell 101, and the shell 101 is divided into two cavities, a force-bearing chamber 102 and a water storage chamber 103. The force-bearing chamber 102 is at the top of the shell 101, and the water storage chamber 103 is at the bottom of the shell 101. The force-bearing chamber 102 can be deformed when subjected to external force, and a water bag 104 is placed in the water storage chamber 103. The material of the water bag 104 is rubber material, which has certain ductility and elasticity. The negative pressure part 109 at the bottom of the water bag 104 is a "U"-shaped structure with an overall opening facing upward. When the water bag 104 is filled with water, the gravity of the water will cause the negative pressure part 109 area to have a certain extension, and the negative pressure part 109 is in the middle part of the bottom of the shell 101, and the other areas of the bottom of the shell 101 are in contact with the ground.

[0033] Therefore, in the above structure, the water storage chamber 103 is located at the bottom of the shell 101. On the one hand, the stability of the shell 101 can be maintained after water is injected. On the other hand, the negative pressure part 109 structure at the bottom of the water bag 104 will cause the water bag 104 to be squeezed after the force chamber 102 is deformed by force. Since water is basically incompressible, the water in the water bag 104 will be squeezed toward the area with lower pressure after being squeezed. When other parts of the water bag 104 in the water storage chamber 103 are restricted, the water will only be squeezed toward the negative pressure part 109 area. The negative pressure part 109 will produce a certain deformation and extension under the action of water pressure, and the distance extended toward the bottom of the shell 101 will be longer. The elastic deformation of the negative pressure part 109 can squeeze out the air in the cavity at the bottom of the shell 101. When the air in the cavity between the bottom of the negative pressure part 109 and the ground is discharged, negative pressure can be generated. The generated negative pressure can adsorb the shell 101 to the ground, which can increase the friction between the shell 101 and the ground. Therefore, after the protection module 1 is hit by an engineering vehicle, the deformation of the force-bearing chamber 102 causes the water bag 104 in the water storage chamber 103 to be deformed. The deformation of the water bag 104 causes the negative pressure part 109 to expand and contract, exhaust and adsorb on the ground. On the basis of the weight of the water bag 104 itself in the shell 101, the friction force increased by the negative pressure generated by the negative pressure part 109 can effectively block the impact of the engineering vehicle, and the interval between the protection module 1 and the pier 2 can serve as a safety distance to prevent the protection module 1 from directly transmitting the force to the pier 2 after being hit.

[0034] In addition to the squeezing effect generated after the force-bearing cavity 102 is hit, which causes the bottom negative pressure part 109 to expand and contract, the water will also shake during the movement, and the protection module 1 will be displaced to a certain extent after being hit. Therefore, the water inside the water bag 104 will shake irregularly during the movement. The irregular shaking will also cause the negative pressure part 109 to deform, and the air in the cavity between the negative pressure part 109 and the ground cannot be completely discharged by only one deformation. Therefore, the continuous shaking of the protection module 1 during the movement will cause the air between the negative pressure part 109 and the ground to be continuously discharged, thereby continuously increasing the adsorption force between the protection module 1 and the ground until no air is discharged.

[0035] At the same time, since the chassis height of the engineering vehicle is generally high, the collision position between the engineering vehicle and the protection module 1 is at the upper part, so the upper part of the shell 101 of the protection module 1 can serve as the force-bearing chamber 102 to better contact and bear the force with the engineering vehicle, and the water storage chamber 103 is at the bottom, which can be used to connect the negative pressure part 109 with the ground. Since the weight of water is relatively heavy, the water storage chamber 103 is at the bottom to improve the stability of the protection module 1 and prevent the protection module 1 from tipping over after being hit. The premise that the negative pressure part 109 expands and contracts to generate negative pressure is that the bottom of the shell 101 is in contact with the ground. Therefore, the weight of the water bag 104 in the water storage chamber 103 can prevent the shell 101 from losing contact with the ground. In addition, in order to ensure the sealing between the shell 101 and the ground, several circles of sealing strips are arranged around the negative pressure part 109 at the bottom of the shell 101 to increase the sealing.

[0036] Since the prior art also has anti-collision structures such as water barriers for the bridge pier 2, but unlike general anti-collision structures, after the general anti-collision structure is hit, due to the long braking distance of the engineering vehicle and the long braking time, the general anti-collision structure is likely to have collided with the bridge pier 2 during the process from the engineering vehicle to the brake stop. If the protection effect is to be improved, the volume and weight of the anti-collision structure can only be increased, which is not only costly but also more inconvenient to use. The protection module 1 in this embodiment can increase the adsorption and friction with the ground after the collision, which is relatively cheaper and more convenient to use.

[0037] Since the shell 101 is divided into two structures, the water storage chamber 103 and the force chamber 102, in order to make the top of the water bag 104 in the water storage chamber 103 be evenly stressed and squeezed downward synchronously after the force chamber 102 is deformed by force, in one embodiment, a partition 107 is slidably arranged in the water storage chamber 103, the partition 107 is connected to the top of the water bag 104, and a limiting strip is arranged on the side wall of the water storage chamber 103 for limiting the partition 107; since the water bag 104 is generally made of rubber, when the water bag 104 is squeezed through the force chamber 102, it is very Only one or more points of the water bag 104 may be squeezed, and the water will be squeezed to the points of the water bag 104 where no force is applied, resulting in a smaller deformation of the bottom negative pressure portion 109. After the top of the water bag 104 is connected to the partition 107, the force-bearing cavity 102 only needs to squeeze one or more points on the top of the partition 107 to achieve the overall squeezing of the top of the water bag 104 by the partition 107. After the force-bearing cavity 102 on the protection module 1 is hit, the water bag 104 in the water storage cavity 103 will only be squeezed in one direction.

[0038] In the above embodiment, when the water bag 104 is squeezed, it is expanded and contracted only by the ductility of the material of the water bag 104 itself, and the air between the negative pressure part 109 and the ground is discharged during the contraction process. However, after the water bag 104 is squeezed and some air is squeezed out through the negative pressure part 109, only when the negative pressure part 109 is reset can a large negative pressure be generated in the bottom cavity of the negative pressure part 109. If the negative pressure part 109 is only pressed down without being reset, the negative pressure generated is small or no negative pressure is generated. In order to generate a sufficient reset distance after the negative pressure part 109 is pressed down for a certain distance, in one embodiment, a first elastic device 108 is provided in the water storage chamber 103. The first elastic device 108 is supported between the bottom of the partition 107 and the bottom of the water storage chamber 103, and the first elastic device 108 is used to push the partition 107 to reset.

[0039] The specific structure of the first elastic device 108 is a telescopic rod, and a spring or other structure capable of generating elastic force is arranged inside the telescopic rod, and a limit strip is arranged at the top position of the water storage chamber 103. In the absence of external force, the first elastic device 108 pushes the partition 107 upward to abut against the bottom of the limit strip. Since the bottom of the partition 107 is connected to the top of the water bag 104, the top of the water bag 104 is at the highest point in the initial state. In this state, there is enough space in the water storage chamber 103, so that the negative pressure part 109 is only affected by the gravity of the water in the water bag 104 without other external forces. When hit by an engineering vehicle, the force-bearing chamber 102 is squeezed and pushes the partition 107 to move downward. At this time, the first elastic device 108 is retracted under the force, so that the water in the water storage chamber 103 The bag 104 is squeezed downward, causing the negative pressure part 109 to extend to the bottom. Since the shell 101 of the protection module 1 will move backward a distance along the impact direction after the collision, and the speed of the engineering vehicle will slow down after the collision, a certain space is generated between the two for the force-bearing chamber 102 to reset. After the force-bearing chamber 102 is reset, the partition 107 has enough space to reset. At this time, the first elastic device 108 will push the partition 107 to reset. The bottom of the partition 107 is connected to the top of the water bag 104, and the water bag 104 is pulled to reset through the partition 107, so that the negative pressure part 109 of the water bag 104 is reset. The reset of the negative pressure part 109 can generate enough negative pressure between the ground, and combined with the shaking effect of the water in the water bag 104, the negative pressure part 109 can produce multiple repeated expansion and contraction with small expansion and contraction amounts, which is used to discharge more air. Specifically, a plurality of first elastic devices 108 are provided in the water storage chamber 103 , which are distributed around the side panels close to the water storage chamber 103 and surround the outside of the water bag 104 in the water storage chamber 103 .

[0040] In one embodiment, a negative pressure port is provided at the bottom of the water storage chamber 103, and a support wall 111 is extended inwardly from the negative pressure port. The negative pressure portion 109 is hung on the support wall 111. The negative pressure port at the bottom of the water storage chamber 103 is the area where the negative pressure portion 109 is connected to the outside of the shell 101. Since the water bag 104 is heavy after being filled with water, the structure of the negative pressure portion 109 itself cannot support the bottom to form a cavity. If there is no structural support at the bottom, the negative pressure portion 109 will be pressed on the ground under the pressure of the water in the water bag 104, and the cavity cannot be formed. In order to create space for expansion and contraction when squeezed, a supporting wall 111 structure is provided on the negative pressure port. The negative pressure port structure has the same shape as the negative pressure portion 109, both of which are circular. Therefore, the supporting wall 111 is a ring-shaped vertical wall structure. Part of the outer area of ​​the bottom of the water bag 104 is prevented from being at the bottom of the water storage chamber 103, and the edge of the negative pressure portion 109 in the middle is hung on the top of the supporting wall 111, and the middle area of ​​the negative pressure portion 109 extends downward along the negative pressure port, and the bottom of the negative pressure portion 109 is suspended in the air through the supporting effect of the supporting wall 111.

[0041] Since the deformation amount generated by the negative pressure part 109 of the water bag 104 itself is still small and the impact time is extremely short, the action of squeezing out the air in the cavity must be completed in a relatively short time. In order to achieve this effect, the support wall 111 is a telescopic wall, and a spring is arranged in the telescopic wall. The telescopic wall is used to push the negative pressure part 109 to reset when the partition 107 is reset; in the case that the support wall 111 is a telescopic wall with a telescopic structure, the negative pressure part 109 will move downward when it is under pressure, and the pressure will push the support wall 111 to retract, thereby reducing the height of the negative pressure part 109, so that the negative pressure part 109 moves downward a longer distance, and more air can be discharged. Specifically, when the force-bearing chamber 102 is subjected to pressure, the partition 107 will be pushed downward, and the downward movement of the partition 107 will press the water bag 104 toward the negative pressure part 109, and the support wall 111 will drop accordingly, increasing the space for the negative pressure part 109 to press downward. After the protection module 1 is hit and retreats a certain distance, the partition 107 is gradually reduced and reset by the force. After the external force is lost, the first elastic device 108 will push the partition 107 to reset. The reset of the partition 107 will pull the top of the water bag 104 connected to the partition 107 to move upward, and the support wall 111 will be lowered. After losing the external pressure, its own elastic force will push the negative pressure part 109 to move upward and reset. Through the telescopic structure of the supporting wall 111, the negative pressure part 109 can move a large distance in a very short time, and achieve a quick exhaust action. After the protection module 1 is hit, the negative pressure part 109 can achieve a quick adsorption action on the ground, increase the friction between the protection module 1 and the bottom surface and the resistance to the engineering vehicle in an instant after the impact, and enable the engineering vehicle to have enough braking time within a short distance, so as to avoid the engineering vehicle directly hitting the bridge pier 2.

[0042] In one embodiment, the shell 101 is hinged with a force-bearing plate 105 in the force-bearing cavity 102. The force-bearing plate 105 is tilted and the bottom is against the partition 107. The force on the force-bearing plate 105 is used to push the partition 107 downward. A second elastic device 106 is hinged in the force-bearing cavity 102. The other end of the second elastic device 106 is hinged to the inner side of the force-bearing plate 105. The second elastic device 106 is used for the force-bearing plate 105 to buffer the impact force.

[0043] In the initial state, the bottom of the force-bearing plate 105 directly abuts against the partition 107, while the outer side surface of the force-bearing plate 105 abuts against the limit strip, and the second elastic device 106 provides the force-bearing plate 105 with an outward thrust. The second elastic device 106 can provide a certain buffering force for the force-bearing plate 105. When hit by an engineering vehicle, if the impact force is lighter, the engineering vehicle will absorb the impact force through the second elastic device 106 after contacting the force-bearing plate 105, and when the impact force is smaller, the adsorption force of the negative pressure part 109 on the bottom surface is smaller. Therefore, the second elastic device 106 can be used for buffering when the impact force is smaller. The top of the force-bearing plate 105 is hinged to the top of the shell 101. Since the force-bearing plate 105 is in an inclined state, the actual length of the force-bearing plate 105 is longer than the straight-line distance between its hinge position and the partition 107. Therefore, when the force-bearing plate 105 rotates backward after being hit, the rotation action of the force-bearing plate 105 will gradually change from an inclined state to a vertical state. In this process, the force-bearing plate 105 will push the partition 107 to move downward. At this time, the protective module 1 is hit and retreats, and the second elastic device 106 can push the force-bearing plate 105 to reset, leaving enough space for the partition 107 to reset and prevent the partition 107 from being stuck when it is reset.

[0044] Since the protection module 1 will retreat at the moment of impact, if the impact force is large, the protection module 1 will retreat faster. When the negative pressure part 109 has not yet fully exerted its adsorption force on the bottom surface, the friction force of the protection module 1 will be insufficient, and the protection module 1 and the engineering vehicle will collide with the pier 2 together. Therefore, it is necessary to complete the reset action of the partition 107 in a very short time. In order to achieve this effect, in one embodiment, a positioning groove 113 is provided on the partition 107, and the force-bearing plate 105 is forced to move into the positioning groove 113 to form a reset space for the partition 107. The size of the positioning groove 113 is larger than the size of the force-bearing plate 105, and the force-bearing plate 105 can be completely integrated therein. When the impact force is applied, the force-bearing plate 105 is quickly pushed from the inclined state to a completely vertical state, and the positioning groove 113 is on the perpendicular line to the hinge position of the force-bearing plate 105. Then, when the force-bearing plate 105 is in the vertical state, it will be inserted into the positioning groove 113, so that the partition 107 can be quickly reset. Then, when the impact force is relatively large, the partition 107 can be reset without resetting the force-bearing plate 105. Moreover, when the impact force is relatively small, the force-bearing plate 105 needs to perform a reciprocating motion to reset the partition 107. After the positioning groove 113 is set, the force-bearing plate 105 only needs to move backward in one direction once to reset the partition 107. Therefore, more time can be saved, and the negative pressure part 109 can achieve adsorption action in a very short time.

[0045] Since the shell 101 itself is heavy, and the water bag 104 in the water storage chamber 103 is even heavier after being filled with water, it is difficult to squeeze out more air only by the squeezing pressure of the negative pressure part 109, resulting in poor exhaust effect in the cavity. In order to be able to exhaust quickly when under pressure, in one embodiment, a one-way airway 110 is provided at the bottom of the shell 101 to connect the negative pressure port and the outside of the shell 101, and a one-way air valve 112 is provided in the one-way airway 110; the one-way air valve 112 can make the gas flow in one direction, and the air in the cavity at the bottom of the negative pressure part 109 is discharged to the outside through the one-way airway 110 under the action of the negative pressure part 109, and the one-way air valve 112 prevents external air from entering the cavity, thereby realizing the rapid discharge of air in the cavity.

[0046] In one embodiment, the protection module 1 is in an arc-shaped structure, and several protection modules 1 are spaced apart from the pier 2, and the sides of the protection modules 1 are detachably connected to each other to form an annular structure; when the protection module 1 is in an arc-shaped shape, the shape of the force-bearing plate 105 is also in an arc-shaped shape, and the arc-shaped force-bearing plate 105 can not only increase its structural strength, but also prevent deformation when impacted. At the same time, when the force-bearing plate 105 is arc-shaped, when it gradually rotates from an inclined state to a vertical state, the widest part of the bottom of the force-bearing plate 105 will be greater than the width of the partition 107 at its vertical foot. Since multiple protection modules 1 are connected to each other, after one of the force-bearing plates 105 is stressed and in a vertical state, the two ends of the force-bearing plate 105 will interfere with the side panels on the adjacent protection module 1 shell 101. The side panels on the protection module 1 shell 101 can be set to an active state. When one of the protection modules 1 is hit, the force-bearing plate 105 on the protection module 1 will push the side panels of the adjacent protection module 1 to squeeze the water bag 104, so that the water bag 104 of the adjacent protection module 1 also generates a certain pressure, and then the negative pressure part 109 on the adjacent protection module 1 also generates suction to the bottom surface. By having multiple protection modules 1 adsorbed on the bottom surface at the same time, the resistance can be increased, thereby faster deceleration of the engineering vehicle that may hit the pier 2 or increase its braking time, providing a better protection effect for the pier 2.

[0047] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A highway cross-line bridge pier protection device, characterized in that: It comprises a plurality of protection modules, which are arranged at intervals around the bridge pier, and the protection modules comprise a shell, the bottom of which abuts against the ground, the lower part of which is a water storage chamber, the upper part of which is a force-bearing chamber, a water bag is arranged in the water storage chamber and is connected to the outside of the shell, a negative pressure part is formed at the bottom of the water bag, a cavity is formed between the negative pressure part and the ground, and the force-bearing chamber is deformed to push and squeeze the negative pressure part of the water bag to deform and squeeze out air for adsorption with the ground.

2. A highway overpass bridge pier protection device according to claim 1, characterized in that: A partition is slidably arranged in the water storage cavity, the partition is connected to the top of the water bag, and a limiting strip is arranged on the side wall of the water storage cavity for limiting the position of the partition.

3. A highway overpass bridge pier protection device according to claim 2, characterized in that: A first elastic device is arranged in the water storage cavity. The first elastic device is supported between the bottom of the partition and the bottom of the water storage cavity. The first elastic device is used to push the partition to reset.

4. A highway overpass bridge pier protection device according to claim 1, characterized in that: A negative pressure port is provided at the bottom of the water storage cavity, a support wall is extended inwardly from the negative pressure port, and the negative pressure part is hung on the support wall.

5. A highway overpass bridge pier protection device according to claim 4, characterized in that: The supporting wall is a telescopic wall, a spring is arranged inside the telescopic wall, and the telescopic wall is used to push the negative pressure part to reset when the partition is reset.

6. A highway overpass bridge pier protection device according to claim 2, characterized in that: The shell is hinged with a force-bearing plate in the force-bearing cavity. The force-bearing plate is arranged obliquely and the bottom thereof abuts against the partition. The force on the force-bearing plate is used to push the partition downward.

7. A highway overpass bridge pier protection device according to claim 6, characterized in that: A second elastic device is hinged in the force-bearing cavity, and the other end of the second elastic device is hinged to the inner side surface of the force-bearing plate. The second elastic device is used for the force-bearing plate to buffer the impact force.

8. A highway overpass bridge pier protection device according to claim 6, characterized in that: The partition is provided with a positioning groove, and the force-bearing plate is forced to move into the positioning groove to form a reset space for the partition.

9. A highway overpass bridge pier protection device according to claim 4, characterized in that: The bottom of the shell is provided with a one-way air passage communicating with the negative pressure port and the outside of the shell, and a one-way air valve is provided in the one-way air passage.

10. A highway overpass bridge pier protection device according to claim 1, characterized in that: The protection module is in an arc-shaped structure, and a plurality of the protection modules are spaced apart from the bridge piers, and the sides of the plurality of protection modules are detachably connected to each other to form a ring structure.

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