CN111981087A - Metal energy consumption limiting and beam falling preventing device for bridge - Google Patents

Abstract

The invention discloses a metal energy-dissipation limiting and anti-falling beam device for bridges. A corrugated plate, the corrugated plate includes a plurality of C-shaped segments protruding toward the same side, the openings of the C-shaped segments of the two corrugated plates are arranged in the opposite direction, and the length direction of the energy dissipation component is along the limit groove One end of the energy dissipation component is connected to the first end of the limiting slot, and the other end is connected to the movable member, and the distance between the movable member and the second end of the limiting slot is adjustable. The use of this device has the advantages of scientific and concise structure design, convenient processing, convenient installation and high space utilization rate, which is beneficial to improve the stability of the deformation of energy-consuming components, ensure the effectiveness of continuous energy consumption, and can significantly improve the seismic performance of the anti-fall beam to the bridge structure. , to protect the bridge structure from earthquake damage and benefit from post-earthquake repair.

Description

A kind of metal energy dissipation limit anti-drop beam device for bridges

technical field

The invention relates to the technical field of bridge anti-falling beam energy consumption, in particular to a metal energy-consuming limit anti-falling beam device for bridges.

Background technique

The bridge limiting device is the key structure of bridge structure earthquake resistance, mainly used to prevent the falling beam caused by the excessive relative displacement of the upper structure and the lower structure.

In the prior art, the anti-falling beam devices of highway bridges in my country generally use concrete blocks, high-strength steel tie rods, high-strength steel cables, etc., while the anti-falling beam devices of railway bridges generally use I-beam processing The block-like form, which lacks buffer capacity and cannot dissipate energy through its own deformation, often needs to set up other energy-consuming devices such as dampers to dissipate seismic energy, which leads to an increase in engineering cost, and needs to be designed and placed separately for energy-dissipating devices. space, poor adaptability in high-intensity seismic areas. A few energy-dissipating limiting devices that combine energy-dissipation and anti-falling beams also use corrugated plates as energy-dissipating components. However, in order to adapt to a small installation space, the corrugated plates have limited undulation amplitude and number, resulting in deformation and displacement in practical applications. Due to the limited energy dissipation capacity, combined with the shape of the corrugated plate, in the actual application process, the shape of the corrugated plate will be greatly changed after a tension and compression deformation, and it is difficult to continuously and effectively exert the energy dissipation effect under the action of the earthquake.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the above-mentioned shortcomings of the existing bridge energy dissipation limiting device using corrugated plates as energy dissipation components, and to provide a metal energy dissipation limiting beam device for bridges.

In order to achieve the above object, the present invention provides the following technical solutions:

A metal energy-consuming limiting and anti-falling beam device for bridges comprises a bottom plate, a limiting groove is arranged on the bottom plate, an energy-consuming component is arranged in the limiting groove, and the energy-consuming component includes two corrugated plates, the The corrugated plate includes a number of C-shaped segments protruding toward the same side, the openings of the C-shaped segments of the two corrugated plates are arranged in the opposite direction, and the length direction of the energy dissipation component is arranged along the longitudinal direction of the limiting groove, One end of the energy dissipation component is connected to the first end of the limiting slot, and the other end is connected to the movable member, and the distance between the movable member and the second end of the limiting slot is adjustable.

When in use, the movable member is used to connect the beam body, the bottom plate is used to connect the bridge pier, or the movable member is used to connect the bridge pier, and the bottom plate is used to connect the beam body, which can prevent the beam from falling during the energy consumption process. happened.

The C-shaped segment may be part of a circle, an ellipse or a sinusoid.

By adopting the metal energy-dissipation limiting and anti-falling beam device for bridges according to the present invention, the limiting groove can be formed by two frames, or two side plates, or one side of the frame and the other side is the side plate. The energy dissipation component includes two corrugated plates, the corrugated plates are made of ductile metal components, and each of the corrugated plates includes several C-shaped sections protruding toward the same side, that is, each of the corrugated plates Included are all wave crests or all wave troughs, and the length direction of the energy dissipation component is arranged along the longitudinal direction of the limit groove, that is, the energy dissipation component can be extended and deformed axially along the limit groove, when the beam body is relative to the bridge pier. During the movement, the movable member can be driven to compress or stretch the energy dissipating component relative to the end, so that the two ends of the C-shaped section of the corrugated plate can undergo ductile deformation close to or away from each other, thereby dissipating seismic energy, And when it is compressed and deformed, it will bulge out or offset in the lateral direction. After a certain amount of deformation, the limit groove can restrain its deformation, effectively ensuring the stability of the energy-consuming component during the deformation process, and at the same time, Since the two corrugated plates are arranged back-to-back, each of the corrugated plates is a continuous wave crest or a wave trough, which is beneficial to increase the number of C-shaped sections in the same space, facilitates dispersion and limit, and transmits force more evenly, which is conducive to mutual restraint , the deformation stability is also better, and it can continuously and repeatedly deform and dissipate energy under the action of earthquake. The structural parameters of the energy dissipation components, such as restoring force, size, and quantity, can be calculated by the weight of the beam and the friction coefficient of the bearing. The reset thrust is calculated in reverse. Compared with the existing corrugated plate design, the device can double the energy consumption capacity in the same space, which is beneficial to improve the stability of the deformation of energy consumption components It can significantly improve the seismic performance of the anti-drop beam to the bridge structure, protect the bridge structure from earthquake damage, and benefit from post-earthquake repair.

Preferably, two adjacent C-shaped sections of the corrugated plate are detachably connected.

Further preferably, both ends of the C-shaped segment have straight segments respectively, and two adjacent C-shaped segments are connected by several bolts, and the length of the straight segments is 1.1-5.0 times the diameter of the bolt hole. The bolts are distributed in the height direction.

Easy to assemble and maintain and replace.

Preferably, the connection between two adjacent C-shaped segments of the corrugated plate has a smooth transition.

No matter whether the two adjacent C-shaped segments are integrally formed or connected by connecting pieces, the portion facing the side wall of the limiting groove has a smooth transition to avoid hindering the deformation of the energy-consuming component.

Preferably, the size and shape of the two corrugated plates are the same, and the C-shaped segments of the two corrugated plates are aligned.

Conducive to spatial arrangement, and is convenient to improve the stability of deformation.

Further preferably, the two C-shaped sections corresponding to the two corrugated plates are integrally formed as structural members.

That is, the two aligned C-shaped segments can be integrally formed as a structural member, that is, the energy dissipation member is an energy dissipation plate comprising several interconnected X-shaped segments, which is convenient for on-site assembly.

Preferably, the limiting slot includes a first baffle plate, a second baffle plate and two side plates, one end of the energy dissipation component is bolted to the first baffle plate, and the movable member is connected to the second baffle plate. The spacing is adjustable.

Preferably, the movable member includes a third baffle plate, and the third baffle plate is provided with a connecting plate, and the connecting plate is used for bolting the two corrugated plates.

Further preferably, several limit components are respectively provided on the two side plates, and the number and position of the limit components are set corresponding to the number and positions of the C-shaped segments.

It is beneficial to the uniform compression or tensile deformation of each C-shaped segment.

Further preferably, stiffening plates are provided on the outer side of the first baffle plate and the outer side of the side plate.

Preferably, the movable member includes a third baffle plate and a connecting plate, and the connecting plate is used for bolting the two corrugated plates.

Preferably, the corrugated plate is a steel structure or an aluminum structure.

To sum up, compared with the prior art, the beneficial effects of the present invention are:

1. Using the metal energy-consuming limiting and anti-falling beam device for bridges according to the present invention, the structural design is scientific and concise, the processing is convenient, the installation is convenient, and the space utilization rate is high. Compared with the existing corrugated plate design, the same The energy dissipation capacity can be doubled in space, which is conducive to improving the stability of the deformation of the energy dissipation components, ensuring the effectiveness of continuous energy consumption, and can significantly improve the seismic performance of the anti-drop beam to the bridge structure, and protect the bridge structure from earthquake damage. , for post-earthquake repair.

2. The energy-consuming components are easy to connect, which is beneficial to maintenance and replacement, and has good tensile and compression deformation stability, which can avoid hindering the deformation of the energy-consuming components, and is beneficial to the uniform compression or tensile deformation of each C-shaped segment.

Description of drawings:

FIG. 1 is a schematic structural diagram of a metal energy dissipation limiting beam device for bridges according to Embodiment 1;

FIG. 2 is a schematic diagram of a partial explosion of a metal energy dissipation limiting beam device for bridges according to Embodiment 1;

FIG. 3 is a schematic structural diagram of the corrugated plate described in Embodiment 2. FIG.

Marking in the figure: 1- Bottom plate, 2- Baffle plate, 31- First baffle plate, 32- Second baffle plate, 33- Side plate, 4- Stiffening plate, 51- Third baffle plate, 52- Connecting plate, 6 -Limiting parts, 7-connecting sleeves.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. However, it should not be construed that the scope of the above-mentioned subject matter of the present invention is limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

Example 1

A metal energy-consuming limiting and anti-drop beam device for bridges according to the present invention comprises a bottom plate 1, a limiting groove is arranged on the bottom plate 1, an energy-consuming component is arranged in the limiting groove, and the energy-consuming component Including two corrugated plates 2, the corrugated plates 2 include a number of C-shaped sections protruding toward the same side, the openings of the C-shaped sections of the two corrugated plates 2 are set back, and the length direction of the energy dissipation component Set along the longitudinal direction of the limiting slot, one end of the energy dissipation component is connected to the end portion of the limiting slot, and the other end is connected to the movable member, and the movable member is connected to the end portion of the limiting slot. The spacing is adjustable. In use, the movable member is used to connect the beam body, the base plate 1 is used to connect the bridge pier, or the movable member is used to connect the bridge pier, and the base plate 1 is used to connect the beam body. The tank has a clearance from the energy dissipating component.

Specifically, as shown in FIGS. 1-2 , the limiting groove includes a first baffle 31 , a second baffle 32 and two side plates 33 , and the first baffle 31 and the second baffle 32 are disposed opposite to each other. , the first baffle 31 is located at the first end of the limiting slot, the second baffle 32 is located at the second end of the limiting slot, and the side plate 33 is connected to the first baffle 31 and the second baffle 32, the limiting groove with an opening at one end is formed, wherein the side plate 33 and the corresponding second baffle 32 form an L-shaped plate, and the outer side of the first baffle 31 A stiffening plate 4 is provided on the outer side of the side plate 33 . There are two corrugated plates 2 with the same shape, size and structure in the limiting groove. The corrugated plates 2 are steel structural parts or aluminum structural parts. The corrugated plates 2 include four C-shaped The C-shaped segment can be an integrally formed structural member, or it can be four independent structural members in this embodiment. The openings of all the C-shaped segments of the same corrugated plate 2 are in the same direction, and the two corrugated plates The openings of the C-shaped segments of the The height of 2 is adapted to the height of the limit groove, and the number and structural parameters of the corrugated plates 2 are determined according to design requirements.

Both ends of the C-shaped section have straight sections, the straight sections are provided with several bolt holes along the height direction, the length of the straight section is 1.1-5.0 times the diameter of the bolt holes, and two adjacent C-shaped sections are The segments are connected by corresponding bolts, and the corrugated plate 2 is also connected to the first baffle 31 by bolts, which is convenient for on-site installation. The movable member includes a third baffle 51 and a connecting plate 52. The two corrugated plates 2 are connected by bolts. The relative movement of the beam body and the bridge pier drives the distance between the third baffle 51 and the second baffle 32 to change, thereby stretching or compressing the section of the corrugated plate 2 to achieve energy dissipation.

Preferably, the connection between two adjacent C-shaped segments of the corrugated plate 2 has a smooth transition. If the corrugated plate 2 is integrally formed, the connection has a smooth edge. For example, in this embodiment, if two adjacent C-shaped sections are bolted to each other, a U-shaped connecting sleeve 7 can be sleeved. The connecting sleeve 7 is sleeved on the straight section and connected with the bellows plate 2 by bolts to make it have a smooth transition. The connecting sleeve 7 can be made of steel, aluminum, rubber, polyester and other materials. There is a gap between the connecting sleeve 7 and the side plate 33, which is beneficial to reduce friction.

The two side plates 33 are respectively provided with a number of limit parts 6, such as bolts or pins can be used, the number and position of the limit parts 6 correspond to the number and position of the C-shaped segments, each of which is set. The limiting member 6 is arranged corresponding to one of the C-shaped segments, which is beneficial to limit the deformation size of each C-shaped segment and ensure uniform compression or tensile deformation of each C-shaped segment.

Compared with the existing corrugated plate design, the device can double the energy consumption capacity in the same space, which is beneficial to improve the stability of the deformation of energy consumption components It can significantly improve the seismic performance of the anti-drop beam to the bridge structure, protect the bridge structure from earthquake damage, and benefit from post-earthquake repair.

The device does not limit the number of limit slots on the bottom plate 1, it can be designed according to energy consumption requirements, or multiple sets of the energy-consuming components can be arranged in the same limit slot, and two adjacent The energy components are separated by the partitions to avoid mutual interference and jamming during the deformation and energy consumption process.

Example 2

The structure of a metal energy-consuming limiting and anti-drop beam device for bridges according to the present invention is roughly the same as that of Embodiment 1. The difference lies in that the two corrugated plates 2 of the device can be combined into an integral member , such as the two C-shaped sections corresponding to the two corrugated plates 2 are integrally formed into a structural member, that is, to form an X-shaped section as shown in FIG. The plates are connected to form a whole, and two adjacent X-shaped segments can be assembled by bolt connection as in this embodiment, or can be processed into an integrally formed component, that is, several X-shaped segments are integrally formed.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (10)

1. A metal energy dissipation limiter anti-drop beam device for bridges, characterized in that it comprises a bottom plate (1), the bottom plate (1) is provided with a limit groove, and an energy dissipation component is provided in the said limit groove, The energy dissipation component includes two corrugated plates (2), the corrugated plates (2) include a plurality of C-shaped sections protruding toward the same side, and the open backs of the C-shaped sections of the two corrugated plates (2) The length direction of the energy consumption component is arranged along the longitudinal direction of the limit slot, one end of the energy consumption component is connected to the end of the limit slot, and the other end is connected to the movable member, and the movable component is connected to the movable member. The distance between the member and the second end of the limiting groove is adjustable. 2 . The anti-falling beam device according to claim 1 , wherein the adjacent two C-shaped sections of the corrugated plate ( 2 ) are detachably connected. 3 . 3 . The anti-falling beam device according to claim 2 , wherein the two ends of the C-shaped section respectively have straight sections, and two adjacent C-shaped sections are connected by a plurality of bolts, and the straight sections are 3 . The length is 1.1-5.0 times the diameter of the bolt hole. 4 . The anti-falling beam device according to claim 1 , characterized in that, the connection between two adjacent C-shaped segments of the corrugated plate ( 2 ) has a smooth transition. 5 . 5 . The anti-drop beam device according to claim 1 , wherein the size and shape of the two corrugated plates ( 2 ) are the same, and the C-shaped segments of the two corrugated plates ( 2 ) are aligned. 6 . 6 . The anti-drop beam device according to claim 5 , wherein the two C-shaped sections corresponding to the two corrugated plates ( 2 ) are integrally formed structural parts. 7 . 7. The anti-drop beam device according to any one of claims 1-6, wherein the limiting groove comprises a first baffle plate (31), a second baffle plate (32) and two side plates (33) ), one end of the energy dissipation component is bolted to the first baffle plate (31), and the distance between the movable member and the second baffle plate (32) is adjustable. 8 . The anti-drop beam device according to claim 7 , wherein a plurality of limiting components ( 6 ) are respectively provided on the two side plates ( 33 ), and the number of the limiting components ( 6 ) is , The position corresponds to the number and position settings of the C-shaped segments. 9 . The anti-drop beam device according to claim 7 , wherein stiffening plates ( 4 ) are provided on the outer side of the first baffle plate ( 31 ) and the outer side of the side plate ( 33 ). 10 . 10. The anti-falling beam device according to any one of claims 1-6, wherein the movable member comprises a third baffle plate (51) and a connecting plate (52), and the connecting plate (52) is used for The two corrugated plates (2) are connected by bolts.

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