Shock-resistant buffer structure for roads and bridges

Abstract

The utility model relates to a buffer structure, in particular to a road and bridge anti-impact buffer structure which comprises a buffer mechanism, embedded parts are connected to the two ends of the buffer mechanism in a chain mode, the buffer mechanism comprises a shell, two moving cylinders are installed in the shell in a sliding mode, the two moving cylinders form a buffer cavity, and a first spring is arranged in the buffer cavity. A connecting cover is mounted at the other end of the moving cylinder; second springs are fixedly installed on the side walls of one ends of the moving cylinders, the other ends of the second springs are fixedly connected with the connecting covers, when the two ends of the buffering mechanism are pulled, the two moving cylinders approach each other, the first springs are compressed and do negative work on the two moving cylinders, and therefore the second springs are stretched and deformed to do positive work on the moving cylinders. The first springs and the second springs are used for sharing impact force borne by the first springs, the first springs and the second springs are used for absorbing and digesting external force, displacement and deformation of a beam body are reduced, the bearing capacity and stability of a bridge are improved, the safety of the bridge is further guaranteed, and the beam falling phenomenon is reduced.

Description

Technical Field

[0001] The utility model relates to a buffer structure, in particular to an anti-impact buffer structure for a road bridge. Background Art

[0002] The construction of bridges has evolved with the advancement of materials and technology. In ancient times, people mainly used natural materials such as wood, stone and bricks to build bridges, and the technology was relatively simple. However, with the rise of the Industrial Revolution, the application of new materials such as steel and concrete and the emergence of more advanced construction methods have greatly improved the scale and complexity of bridges. Secondly, economic and social development is also an important factor in promoting the development of bridges. With the growth of population and the acceleration of urbanization, the demand for transportation is increasing, which has prompted people to build more bridges to meet these needs. At the same time, the development of trade and commerce also requires more efficient transportation connections, which further promotes the construction of bridges. Earthquake disasters are very destructive to infrastructure such as bridges. In order to protect the safety of people’s lives and property and smooth traffic, attention is paid to strengthening the setting of earthquake-resistant facilities in bridge design, thereby improving the earthquake resistance of bridges. At present, my country’s bridges mainly use anti-falling beam devices, including anchor bolts, blocks, steel brackets and other earthquake-resistant facilities;

[0003] However, under earthquake conditions, when the bearing capacity of the bridge reaches its limit, it will shift or fall, causing traffic interruption and bringing great difficulties to disaster relief work. Utility Model Content

[0004] The main purpose of the utility model is to provide an anti-impact buffer structure for a road bridge to solve the problem proposed in the relevant technology that under earthquake conditions, when the bearing capacity of the bridge reaches its limit, it will shift or fall, resulting in traffic interruption and bringing great difficulties to disaster relief work.

[0005] In order to achieve the above-mentioned object, according to one aspect of the utility model, a road bridge anti-impact buffer structure is provided, including a buffer mechanism, wherein both ends of the buffer mechanism are chain-connected with embedded parts, the buffer mechanism includes a shell, wherein two moving cylinders are slidably installed in the shell, and the two moving cylinders form a buffer cavity, wherein a first spring is arranged in the buffer cavity, and a connecting cover is threadedly installed at the other end of the moving cylinder;

[0006] Among them, a second spring is fixedly installed on the side wall of one end of the moving cylinder, and the other end of the second spring is fixedly connected to the connecting cover. When the two ends of the buffer mechanism are subjected to tension, the two moving cylinders approach each other, so that the first spring is compressed and does negative work on the two moving cylinders, so that the second spring stretches and deforms to do positive work on the moving cylinder, which is used to share the impact force received by the first spring.

[0007] Furthermore, limiting grooves are provided at both ends of the movable cylinder, and the two movable cylinders are mutually inserted into the limiting grooves.

[0008] Furthermore, at least two embedded parts are connected to both ends of the buffer mechanism.

[0009] Furthermore, the embedded part includes an embedded block, and a plurality of steel bars are fixedly installed on a side wall of one side of the embedded block.

[0010] Furthermore, a connecting plate is provided on the side wall on the other side of the embedded block, and the connecting plate is connected to the side wall on the other side of the embedded block by bolts.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In this anti-impact buffer structure of a road bridge, two moving cylinders approach each other, so that the first spring is compressed and deformed to absorb the impact force of bridge vibration, and the second spring itself is stretched and deformed to share the force exerted on the first spring. The first spring and the second spring are used to absorb and digest external forces, reduce the displacement and deformation of the beam body, improve the bearing capacity and stability of the bridge, further ensure the safety of the bridge, and reduce the occurrence of falling beams. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the road bridge anti-impact buffer structure;

[0014] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0015] Figure 3 It is a schematic diagram of a half-section structure of an anti-impact buffer structure of a road bridge;

[0016] Figure 4 Schematic diagram of the explosion-resistant impact buffer structure of a road bridge.

[0017] Illustrations: 1. Buffer mechanism; 101. Shell; 102. Moving cylinder; 1021. Buffer chamber; 1022. First spring; 1023. Second spring; 1024. Limiting groove; 103. Connecting cover; 2. Embedded parts; 201. Embedded block; 202. Connecting plate. DETAILED DESCRIPTION

[0018] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0019] See also Figure 1-Figure 4As shown, the purpose of this embodiment is to provide an anti-impact buffer structure for a road bridge, including a buffer mechanism 1, wherein both ends of the buffer mechanism 1 are chain-connected with embedded parts 2, the buffer mechanism 1 includes a shell 101, wherein two moving cylinders 102 are slidably installed in the shell 101, wherein the two moving cylinders 102 form a buffer cavity 1021, wherein a first spring 1022 is arranged in the buffer cavity 1021, and a connecting cover 103 is threadedly installed at the other end of the moving cylinder 102;

[0020] Among them, a second spring 1023 is fixedly installed on the side wall of one end of the moving cylinder 102, and the other end of the second spring 1023 is fixedly connected to the connecting cover 103. When the two ends of the buffer mechanism 1 are subjected to tension, the two moving cylinders 102 approach each other, causing the first spring 1022 to be compressed and do negative work on the two moving cylinders 102, so that the second spring 1023 stretches and deforms to do positive work on the moving cylinder 102, which is used to share the impact force received by the first spring 1022.

[0021] Limiting grooves 1024 are provided at both ends of the moving cylinder 102, and the two moving cylinders 102 are plugged into the limiting grooves 1024. Under earthquake conditions, the connecting covers 103 at the other ends of the two moving cylinders 102 will pull the two moving cylinders 102 to slide in the shell 101 and approach each other. At this time, the bottoms of the two moving cylinders 102 will approach each other, thereby gradually reducing the cavity space of the buffer cavity 1021, so that the first spring 1022 is compressed by the two moving cylinders 102 approaching each other. The first spring 1022 is compressed and deformed and stores energy, thereby doing positive work on the two moving cylinders 102, which is used to buffer the pulling force of the connecting covers 103 at the other ends of the two moving cylinders 102 to avoid each other, further reducing the vibration of the bridge caused by the earthquake, and improving the safety and stability of the bridge.

[0022] At least two embedded parts 2 are connected to both ends of the buffer mechanism 1. By setting at least two embedded parts 2, when the bridge vibrates due to an earthquake, the force at the connection between the beam body, the abutment and the embedded parts 2 is concentrated, which can easily cause the force deformation at the connection between the beam body, the abutment and the embedded parts 2. By setting at least two embedded parts 2 on the side walls of the beam body and the abutment respectively, the impact force of the bridge vibration can be dispersed to protect the beam body and the abutment and avoid deformation due to force.

[0023] The embedded part 2 includes an embedded block 201, and a plurality of steel bars are fixedly installed on the side wall of one side of the embedded block 201. A bend is arranged in the middle of the plurality of steel bars, and the bending angle is set to at least 90°, so as to make the connection between the embedded block 201 embedded in the beam body and the abutment and the beam body and the abutment more stable, thereby further improving the stress-bearing performance of the embedded block 201.

[0024] A connecting plate 202 is provided on the side wall on the other side of the embedded block 201, and the connecting plate 202 is connected to the side wall on the other side of the embedded block 201 by bolts. The embedded block 201 and the connecting plate 202 are bolted together, making the disassembly and maintenance of the anti-impact buffer structure of the road bridge more convenient, which is conducive to later inspection, maintenance and replacement.

[0025] When the utility model is used in practice, when the beam body and the abutment are poured with cement, the embedded blocks 201 of at least two embedded parts 2 are embedded in the cement. At this time, the several steel bars of the side wall on the other side of the embedded block 201 are bent at least 90 degrees. At the same time, the upper surface of the embedded block 201 is in the same plane as the horizontal surface of the cement. Then, the embedded block 201 and the connecting plate 202 are fixed by bolts. When the bridge is affected by an earthquake and vibrates, the bearing capacity of the bridge reaches the limit and then shifts. At this time, the embedded parts 2 embedded in the bridge body and the abutment will pull the connecting cover 103 through the chain connection. At this time, the two moving cylinders 102 in the shell 101 approach each other. As a result, the space in the buffer cavity 1021 is compressed, and then the first spring 1022 in the buffer cavity 1021 is compressed and deformed and stores energy under the action of the two moving cylinders 102 approaching each other. Then the first spring 1022 does positive work on the moving cylinders 102 at both ends, and the second spring 1023 is stretched through the two moving cylinders 102 approaching each other. The stretching deformation of the second spring 1023 shares the force exerted on the first spring 1022. The first spring 1022 and the second spring 1023 deform themselves, and then absorb the force of the mutual displacement between the abutment and the beam body caused by the vibration of the bridge, thereby avoiding the occurrence of falling beams.

[0026] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended 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 road bridge anti-impact buffer structure, characterized in that: The invention comprises a buffer mechanism (1), wherein both ends of the buffer mechanism (1) are chain-connected with embedded parts (2), the buffer mechanism (1) comprises a shell (101), two moving cylinders (102) are slidably mounted in the shell (101), the two moving cylinders (102) form a buffer cavity (1021), a first spring (1022) is arranged in the buffer cavity (1021), and a connecting cover (103) is threadedly mounted on the other end of the moving cylinder (102); A second spring (1023) is fixedly mounted on the side wall of one end of the moving cylinder (102), and the other end of the second spring (1023) is fixedly connected to the connecting cover (103). When the two ends of the buffer mechanism (1) are subjected to tension, the two moving cylinders (102) approach each other, causing the first spring (1022) to be compressed and perform negative work on the two moving cylinders (102), and causing the second spring (1023) to be stretched and deformed to perform positive work on the moving cylinder (102), thereby sharing the impact force exerted on the first spring (1022).

2. The road bridge anti-impact buffer structure according to claim 1 is characterized in that: Limiting grooves (1024) are provided at both ends of the moving cylinder (102), and the two moving cylinders (102) are mutually inserted into the limiting grooves (1024).

3. The road bridge anti-impact buffer structure according to claim 2 is characterized in that: At least two embedded parts (2) are connected at both ends of the buffer mechanism (1).

4. The road bridge anti-impact buffer structure according to claim 3 is characterized in that: The embedded part (2) comprises an embedded block (201), and a plurality of steel bars are fixedly mounted on a side wall of one side of the embedded block (201).

5. The road bridge anti-impact buffer structure according to claim 4 is characterized in that: A connecting plate (202) is provided on the other side wall of the embedded block (201), and the connecting plate (202) is connected to the other side wall of the embedded block (201) via bolts.

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