A bridge energy dissipation protection device

Abstract

The present invention discloses a bridge energy dissipation protection device, which relates to the technical field of bridges, and includes at least one energy dissipation component, each of which includes an upper anchor plate, a lower anchor plate and a damping component, wherein the upper anchor plate is used to be fixedly connected to a beam body, the lower anchor plate is used to be fixedly connected to a bridge pier, the damping component is circumferentially arranged between the upper anchor plate and the lower anchor plate, and the upper end and the lower end of the damping component are respectively connected to the upper anchor plate and the lower anchor plate in the circumferential direction; the damping component can generate damping deformation when the upper anchor plate and the lower anchor plate undergo horizontal relative displacement. The bridge energy dissipation protection device provided by the present invention improves the energy dissipation effect and reduces the occurrence of direct impact damage.

Description

Technical Field

[0001] The invention relates to the technical field of bridges, and in particular to a bridge energy dissipation protection device. Background Art

[0002] my country is located between the Pacific Rim Seismic Belt and the Eurasian Seismic Belt. Due to the squeezing of the Pacific Plate, the Indian Plate and the Philippine Sea Plate, the seismic fault zone is very active. Earthquake disasters are sudden and destructive, and their strong impact often causes serious damage to building structures such as bridges, resulting in huge losses of life and property. Under the action of earthquakes, if no restrictive measures are taken, the upper beam of the bridge will experience a large displacement, and even the beam will fall from the piers and abutments, causing great safety hazards and economic losses.

[0003] Bridge protection devices are the key to realizing the bridge protection function. For example, patent CN201820695954.2 provides an energy-absorbing device for multiple protection main beams to prevent them from falling. The device limits the displacement by setting cables between the piers and the beams. The energy-absorbing effect of limiting the displacement by a single cable is poor. The device limits the displacement by contact resistance between the blocks, which is easily damaged by the direct impact of seismic loads. Summary of the invention

[0004] The purpose of the present invention is to provide a bridge energy dissipation protection device to solve the problems existing in the above-mentioned prior art, improve the energy dissipation effect, and reduce the occurrence of direct impact damage.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a bridge energy dissipation protection device, comprising at least one energy dissipation component, each of which comprises an upper anchor plate, a lower anchor plate and a damping component, the upper anchor plate is used to be fixedly connected to a beam body, the lower anchor plate is used to be fixedly connected to a bridge pier, the damping component is circumferentially arranged between the upper anchor plate and the lower anchor plate, the upper end and the lower end of the damping component are respectively connected to the upper anchor plate and the lower anchor plate along the circumferential direction; the damping component can undergo damping deformation when the upper anchor plate and the lower anchor plate undergo horizontal relative displacement.

[0007] Preferably, the upper anchor plate is provided with an upper through channel along the thickness direction, and the lower anchor plate is provided with a lower through channel along the thickness direction, and the upper through channel is opposite to the lower through channel; the upper end and the lower end of the damping component respectively pass through the upper through channel and the lower through channel so as to be able to be connected to the upper anchor plate and the lower anchor plate respectively.

[0008] Preferably, a plurality of upper bosses are evenly arranged along the circumferential direction on the upper side of the upper anchor plate close to the upper through channel, and the upper end of the damping component is rotatably sleeved on the plurality of upper bosses.

[0009] Preferably, a plurality of lower bosses are evenly arranged along the circumferential direction on the lower side of the lower anchor plate near the lower through channel, and the lower end of the damping component is rotatably sleeved on the plurality of lower bosses.

[0010] Preferably, the upper boss and the lower boss are both sleeved with a rotating sleeve, and the upper end and the lower end of the damping component are rotatably sleeved on the corresponding rotating sleeves outside the upper boss and the lower boss respectively.

[0011] Preferably, the upper anchor plate is provided with a plurality of upper slide grooves respectively surrounding the plurality of upper bosses, and the lower anchor plate is provided with a plurality of lower slide grooves respectively surrounding the plurality of lower bosses, and the upper and lower ends of the damping component are respectively slidably embedded in the plurality of upper slide grooves and the plurality of lower slide grooves.

[0012] Preferably, an annular cover plate for covering the upper boss or the lower boss is detachably provided on the upper side of the upper anchor plate and the lower side of the lower anchor plate.

[0013] Preferably, the damping component is configured as a damping steel wire rope connected end to end, the damping steel wire rope is reciprocatingly connected to the upper anchor plate and the lower anchor plate; and the damping steel wire rope portion between the upper anchor plate and the lower anchor plate is bent inwardly.

[0014] Preferably, the energy absorbing components are provided in two numbers and are used to be respectively connected to two adjacent beam bodies, and the two energy absorbing components are fixedly connected via a connecting beam component, and the connecting beam component is connected to the opposite side ends between the two upper anchor plates.

[0015] Preferably, the connecting beam assembly includes one or more connecting beam steel wire ropes, the connecting beam steel wire ropes are connected to the upper surfaces of both side ends of the upper anchor plate, and the upper surface of the upper anchor plate for connecting the connecting beam steel wire ropes is detachably provided with a protective cover plate in the area.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The bridge energy dissipation protection device provided by the present invention arranges the energy dissipation component between the beam body and the bridge pier, wherein the upper anchor plate is fixedly connected to the beam body, the lower anchor plate is fixedly connected to the bridge pier, and a damping component is circumferentially arranged between the upper anchor plate and the lower anchor plate. When the beam body and the bridge pier undergo horizontal relative displacement due to earthquake load, the upper anchor plate and the lower anchor plate are driven to undergo horizontal relative displacement, so that the damping component undergoes damping deformation to dissipate energy, thereby reducing the horizontal relative displacement between the beam body and the bridge pier. Since the damping component is distributed along the circumferential direction, it can dissipate energy for the relative movement of the beam body and the bridge pier in various horizontal directions, buffer the earthquake load, and improve the energy dissipation protection effect. Moreover, the damping components act synergistically in the circumferential direction, thereby reducing the phenomenon of damage caused by direct earthquake impact to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of the bridge energy dissipation protection device provided in the first embodiment in a partial cross-section;

[0020] Figure 2 A schematic top view of the bridge energy dissipation protection device (without an annular cover plate) provided in Example 1;

[0021] Figure 3 A schematic top view of an energy dissipation component provided in Example 1 (excluding the annular cover plate and the damping component);

[0022] Figure 4 A schematic diagram of the structure of the rotating sleeve provided in the first embodiment;

[0023] Figure 5 A schematic top view of the bridge energy dissipation protection device provided in Example 2;

[0024] Figure 6 A schematic top view of the bridge energy dissipation protection device provided in Example 3;

[0025] Figure 7 A schematic diagram of the application status of the bridge energy dissipation protection device provided in Embodiment 1, 2 or 3.

[0026] In the figure: 1-bridge energy dissipation protection device; 10-energy dissipation component; 11-upper anchor plate; 111-upper through channel; 112-upper boss; 113-upper slide; 114-groove; 115-second ear plate; 12-lower anchor plate; 121-lower through channel; 13-damping component; 14-swivel sleeve; 15-annular cover plate; 16-connecting beam assembly; 161-connecting beam wire rope; 162-anchor terminal; 163-first ear plate; 164-anchor end; 17-protective cover plate; 2-beam body; 3-bridge pier. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The purpose of the present invention is to provide a bridge energy dissipation protection device to solve the problems existing in the above-mentioned prior art, improve the energy dissipation effect, and reduce the occurrence of direct damage.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Embodiment 1

[0031] This embodiment provides a bridge energy dissipation protection device 1, see Figure 1 and Figure 7 , including at least one energy dissipation component 10, each energy dissipation component 10 includes an upper anchor plate 11, a lower anchor plate 12 and a damping component 13, the upper anchor plate 11 is used to be fixedly connected to the beam body 2, the lower anchor plate 12 is used to be fixedly connected to the pier 3, the damping component 13 is circumferentially arranged between the upper anchor plate 11 and the lower anchor plate 12, the upper end and the lower end of the damping component 13 are respectively connected to the upper anchor plate 11 and the lower anchor plate 12 along the circumferential direction; the damping component 13 can undergo damping deformation when the upper anchor plate 11 and the lower anchor plate 12 undergo horizontal relative displacement.

[0032] The energy dissipation assembly 10 is arranged between the beam body 2 and the pier 3, wherein the upper anchor plate 11 is fixedly connected to the beam body 2, and the lower anchor plate 12 is fixedly connected to the pier 3. A plurality of damping components 13 are circumferentially arranged between the upper anchor plate 11 and the lower anchor plate 12. When the beam body 2 and the pier 3 are subjected to a horizontal relative displacement due to an earthquake load, the upper anchor plate 11 and the lower anchor plate 12 are driven to be horizontally relatively displaced, so that the damping component 13 is deformed by damping to dissipate energy, so as to reduce the horizontal relative displacement between the beam body 2 and the pier 3. Since the damping components 13 are distributed along the circumferential direction, they can dissipate energy for the relative movement of the beam body 2 and the pier 3 in various horizontal directions, buffer the earthquake load, and enhance the energy dissipation protection effect. Moreover, the circumferential parts of the damping component 13 cooperate with each other, so as to reduce the damage caused by the direct impact of the earthquake to a certain extent.

[0033] In the optional scheme of this embodiment, it is more preferred that the upper anchor plate 11 is provided with an upper through channel 111 along the thickness direction, and the lower anchor plate 12 is provided with a lower through channel 121 along the thickness direction, and the upper through channel 111 is opposite to the lower through channel 121; the upper end and the lower end of the damping component 13 respectively pass through the upper through channel 111 and the lower through channel 121 so as to be connected to the upper anchor plate 11 and the lower anchor plate 12 respectively; the upper through channel 111 and the lower through channel 121 are provided to facilitate the connection of the damping component 13 with the upper anchor plate 11 and the lower anchor plate 12; further, the corners where the damping component 13 contacts with the upper through channel 111 and the lower through channel 121 adopt rounded transition to avoid damage to the damping component 13.

[0034] Among the optional solutions of this embodiment, it is more preferred to refer to Figure 2 and Figure 3 A plurality of upper bosses 112 are evenly arranged along the circumferential direction on the upper side of the upper anchor plate 11 near the upper through channel 111, and the upper end of the damping component 13 is rotatably sleeved on the plurality of upper bosses 112. By providing a plurality of upper bosses 112, the upper end of the damping component 13 is rotatably sleeved on each upper boss 112 to achieve a rotatable connection, thereby preventing the damping component 13 from getting stuck during the damping deformation and affecting the energy dissipation effect.

[0035] In the optional scheme of this embodiment, it is more preferred that a plurality of lower bosses are evenly arranged along the circumferential direction on the lower side of the lower anchor plate 12 near the lower through channel 121, and the lower end of the damping component 13 is rotatably mounted on the plurality of lower bosses; wherein the structure of the lower bosses is the same as the setting method of the upper bosses 112, which is not shown in the figure. By setting a plurality of lower bosses, the lower end of the damping component 13 is rotatably mounted on each lower boss to achieve a rotational connection, thereby preventing the damping component 13 from getting stuck during the damping deformation and affecting the energy consumption effect.

[0036] Among the optional solutions of this embodiment, it is more preferred to refer to Figure 3 and Figure 4 The upper boss 112 and the lower boss are both sleeved with a rotating sleeve 14, and the upper and lower ends of the damping component 13 are respectively rotatably sleeved on the corresponding rotating sleeves 14 outside the upper boss 112 and the lower boss; specifically, the rotating sleeve 14 can be made of metal materials such as steel, copper, and titanium alloy, or can be made of non-metallic materials such as polytetrafluoroethylene, nylon, and polyurethane. The rotating sleeve 14 is fixed to the upper boss 112 or the lower boss, and plays a lubricating role when the damping component 13 and the upper anchor plate 11 and the lower anchor plate 12 move relative to each other, thereby preventing the damping component 13 from getting stuck during the movement; the rotating sleeve 14 can also be directly set as an annular bearing, which can also prevent the damping component 13 from getting stuck during the movement.

[0037] Among the optional solutions of this embodiment, it is more preferred to refer to Figure 3 The upper anchor plate 11 is provided with a plurality of upper slide grooves 113 respectively surrounding the plurality of upper bosses 112, and the lower anchor plate 12 is provided with a plurality of lower slide grooves respectively surrounding the plurality of lower bosses. The upper and lower ends of the damping component 13 are respectively slidably embedded in the plurality of upper slide grooves 113 and the plurality of lower slide grooves; by setting the upper slide grooves 113 and the lower slide grooves, the two ends of the damping component 13 can be rotatably sleeved outside the upper boss 112 and the lower boss, so that the damping component 13 can be rotated while limiting the upper and lower ends of the damping component 13; the lower slide grooves are not shown in the figure, and are set in the same way as the upper slide grooves 113.

[0038] In the optional scheme of this embodiment, it is more preferred that the upper side of the upper anchor plate 11 and the lower side of the lower anchor plate 12 are both detachably provided with an annular cover plate 15 for covering the upper boss 112 or the lower boss; the upper and lower ends of the damping component 13 are protected by providing the annular cover plate 15 to avoid disengagement, wherein the annular cover plate 15 is flush with the upper anchor plate 11 and the lower anchor plate 12, and is connected by bolts, and the detachable fitting mode facilitates the installation and disassembly of the damping component 13.

[0039] In the optional scheme of this embodiment, it is more preferred that each damping component 13 is configured as a damping steel wire rope, and the damping steel wire rope is reciprocatingly connected to the upper anchor plate 11 and the lower anchor plate 12. Specifically, the damping steel wire rope is an integrally braided closed steel wire rope, which is achieved by repeatedly winding up and down in a plurality of upper slide grooves 113 and a plurality of lower slide grooves of the upper anchor plate 11 and the lower anchor plate 12. The damping steel wire rope group adopts a single jointless closed steel wire rope so that it can slide in a plurality of upper slide grooves 113 and a plurality of lower slide grooves when the whole body is subjected to force. With the circumferentially uniformly distributed upper slide grooves 113 and the circumferentially uniformly distributed lower slide grooves, the damping steel wire rope group is projected in the plane direction as follows: The regular isotropic axially symmetrical pattern makes the damping steel wire rope isotropic and improves the energy consumption effect in the horizontal direction. In addition, the damping steel wire rope portion between the upper anchor plate 11 and the lower anchor plate 12 is bent inwardly. The damping steel wire rope portion is bent inwardly, which can reduce the vertical space occupied by the damping steel wire rope in a relaxed state, reduce the overall size of the device, and improve the economy of the device. At the same time, when the damping steel wire rope is bent inwardly, it can more smoothly transition to the upper slide groove 113 and the lower slide groove of the upper anchor plate 11 and the lower anchor plate 12, reducing the number of folding angles of the damping steel wire rope, which can better prevent the damping steel wire rope from getting stuck with the upper anchor plate 11 and the lower anchor plate 12 under earthquake conditions.

[0040] In the optional scheme of this embodiment, it is more preferred that two energy-absorbing components 10 are provided and used to be respectively connected to two adjacent beam bodies 2, and the two energy-absorbing components 10 are fixedly connected by a connecting beam component 16, and the connecting beam component 16 is connected to the two opposite side ends between the two upper anchor plates 11; by providing the connecting beam component 16, the two energy-absorbing components 10 are connected to form a whole, so that the two beam bodies 2 can jointly resist the horizontal force in the earthquake, which not only avoids the collision of the beam bodies 2 caused by the asynchronous movement of the adjacent beam bodies 2, but also can further reduce the relative displacement of the pier beam 3 to prevent the occurrence of falling beams.

[0041] Among the optional solutions of this embodiment, it is more preferred to refer to Figure 2 and Figure 3The connecting beam assembly 16 includes a plurality of connecting beam steel wire ropes 161 arranged side by side, and the connecting beam steel wire ropes 161 are connected to the upper surfaces of the two side ends of the upper anchor plate 11, and each connecting beam steel wire rope 161 is arranged in a ring shape, and the two ends are respectively sleeved in the grooves 114 on the two sides of the two upper anchor plates 11, and then a protective cover plate 17 is detachably provided in the area on the upper surface of the upper anchor plate 11 for connecting the connecting beam steel wire ropes 161, so as to protect the two ends of the connecting beam steel wire ropes 161; specifically, the protective cover plate 17 is connected to the upper anchor plate 11 by bolts, so as to facilitate the installation and disassembly of the connecting beam steel wire ropes 161.

[0042] It should be noted that the bridge energy dissipation protection device 1 provided in this embodiment is used for dissipating energy between the beam body 2 and the pier 3, and the vertical support between the beam body 2 and the pier 3 is achieved by conventional bearings.

[0043] Embodiment 2

[0044] This embodiment provides a bridge energy dissipation protection device 1, which is different from the first embodiment in that: Figure 5 The connecting beam assembly 16 is configured as a connecting beam steel wire rope 161, which is sequentially passed through a plurality of grooves 14 on both side ends of the two upper anchor plates 11, and the connecting beam steel wire rope 161 is respectively provided with anchor terminals 162, and the ends of the anchor terminals 162 are connected with first ear plates 163, which are rotationally connected to the second ear plates 115 of the upper anchor plates 11 through pin shafts, and the rotational connection method avoids obstruction to the movement of the connecting beam steel wire rope 161.

[0045] The other structures of the bridge energy dissipation protection device 1 provided in this embodiment are the same as those in the first embodiment, and will not be described in detail here.

[0046] Embodiment 3

[0047] This embodiment provides a bridge energy dissipation protection device 1, which is different from the first embodiment in that: Figure 6 The connecting beam assembly 16 includes a plurality of connecting beam steel wire ropes 161 arranged side by side, and anchoring ends 164 are provided at both ends of each connecting beam steel wire rope 161. The anchoring ends 164 can be metal casting ends or metal crimping tube ends. A plurality of anchoring grooves are provided at one end of the upper anchoring plate 11. The anchoring ends 164 of the connecting beam steel wire ropes 161 are placed in the anchoring grooves to connect the two upper anchoring plates 11.

[0048] The other structures of the bridge energy dissipation protection device 1 provided in this embodiment are the same as those in the first embodiment, and will not be described in detail here.

[0049] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A bridge energy dissipation protection device, characterized in that: The invention comprises at least one energy dissipation component (10), each of the energy dissipation components (10) comprising an upper anchor plate (11), a lower anchor plate (12) and a damping component (13), the upper anchor plate (11) being used for being fixedly connected to a beam body (2), the lower anchor plate (12) being used for being fixedly connected to a bridge pier (3), the damping component (13) being arranged between the upper anchor plate (11) and the lower anchor plate (12) along the circumferential direction, the upper end and the lower end of the damping component (13) being respectively connected to the upper anchor plate (11) and the lower anchor plate (12) along the circumferential direction; the damping component (13) can generate damping deformation when the upper anchor plate (11) and the lower anchor plate (12) undergo horizontal relative displacement; The upper anchor plate (11) is provided with an upper through-channel (111) along the thickness direction, and the lower anchor plate (12) is provided with a lower through-channel (121) along the thickness direction, and the upper through-channel (111) is opposite to the lower through-channel (121); the upper end and the lower end of the damping component (13) respectively pass through the upper through-channel (111) and the lower through-channel (121) to be connected to the upper anchor plate (11) and the lower anchor plate (12) respectively; A plurality of upper bosses (112) are evenly arranged along the circumferential direction on the upper side of the upper anchor plate (11) near the upper through channel (111), and the upper end of the damping component (13) is rotatably sleeved on the plurality of upper bosses (112); A plurality of lower bosses are evenly arranged along the circumferential direction on the lower side of the lower anchor plate (12) near the lower through-channel (121), and the lower end of the damping component (13) is rotatably sleeved on the plurality of lower bosses; The damping component (13) is configured as a damping steel wire rope connected end to end, the damping steel wire rope being reciprocatingly connected to the upper anchor plate (11) and the lower anchor plate (12); and the damping steel wire rope portion between the upper anchor plate (11) and the lower anchor plate (12) is bent inwardly.

2. The bridge energy dissipation protection device according to claim 1 is characterized in that: The upper boss (112) and the lower boss are both sleeved with a rotating sleeve (14), and the upper end and the lower end of the damping component (13) are rotatably sleeved on the corresponding rotating sleeves (14) outside the upper boss (112) and the lower boss, respectively.

3. The bridge energy dissipation protection device according to claim 1 is characterized in that: The upper anchor plate (11) is provided with a plurality of upper slide grooves (113) respectively surrounding the plurality of upper bosses (112); the lower anchor plate (12) is provided with a plurality of lower slide grooves respectively surrounding the plurality of lower bosses; the upper end and the lower end of the damping component (13) are respectively slidably embedded in the plurality of upper slide grooves (113) and the plurality of lower slide grooves.

4. The bridge energy dissipation protection device according to claim 1 is characterized in that: An annular cover plate (15) for covering the upper boss (112) or the lower boss is detachably provided on the upper side of the upper anchor plate (11) and the lower side of the lower anchor plate (12).

5. The bridge energy dissipation protection device according to claim 1 is characterized in that: The energy dissipation components (10) are provided in two numbers and are used to be connected to two adjacent beam bodies (2) respectively. The two energy dissipation components (10) are fixedly connected via a connecting beam component (16), and the connecting beam component (16) is connected to the two opposite side ends between the two upper anchor plates (11).

6. The bridge energy dissipation protection device according to claim 5 is characterized in that: The connecting beam assembly (16) comprises one or more connecting beam steel wire ropes (161), the connecting beam steel wire ropes (161) being connected to the upper surfaces of both side ends of the upper anchor plate (11), and a protective cover plate (17) is detachably provided in an area of ​​the upper surface of the upper anchor plate (11) for connecting the connecting beam steel wire ropes (161).

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