Anti-falling-seismic mitigation and isolation device for bridge and seismic mitigation and isolation bridge

Abstract

The utility model discloses an anti-falling-shock absorption and isolation device for a bridge and a shock absorption and isolation bridge, and relates to the technical field of bridge anti-seismic equipment, the anti-falling-shock absorption and isolation device comprises a limiting energy consumption assembly, a first lateral flexible connecting piece, a second lateral flexible connecting piece, a top limiting shock absorption disengagement assembly and a top flexible connecting piece, the first lateral flexible connecting piece is detachably arranged on the transverse side wall face of the limiting energy dissipation assembly, the second lateral flexible connecting piece is detachably arranged on the longitudinal side wall face of the limiting energy dissipation assembly, and the two ends of the top limiting damping disengaging assembly extend in the transverse direction and are overhung outwards. A top flexible connecting piece is arranged at the overhanging end of the top limiting damping disengaging assembly. According to the anti-falling-shock absorption and isolation device for the bridge, the limiting energy consumption assembly, the first lateral flexible connecting piece, the second lateral flexible connecting piece, the top limiting shock absorption disengagement assembly and the top flexible connecting piece are arranged in a fusion mode, the shock absorption and isolation effect is good, and maintenance is convenient.

Description

Technical Field

[0001] This utility model relates to the field of bridge seismic equipment technology, specifically to a bridge anti-fall-damping and seismic isolation device and a seismic isolation bridge. Background Technology

[0002] As a critical component of transportation infrastructure, the seismic performance of bridges directly impacts traffic safety. Under strong earthquakes, bridges may suffer severe damage such as beam collapse or other serious injuries, leading to structural failure and significant losses.

[0003] Currently, the seismic resistance of bridge structures mainly relies on measures such as damping devices, seismic isolation devices, and anti-falling beam devices. Damping devices dissipate seismic energy by increasing damping, seismic isolation devices extend the structural period to reduce seismic forces, and anti-falling beam devices primarily limit excessive displacement or detachment of the bridge superstructure from its supports under strong earthquakes. In existing technologies, anti-falling beam devices and seismic isolation devices are usually designed and installed separately. While this approach improves the seismic performance of bridges to some extent, it also presents several problems: First, the independent installation of multiple devices increases construction complexity and cost; second, the lack of a collaborative working mechanism between the devices may lead to poor seismic resistance; third, the maintenance and replacement of multiple independent systems become more difficult and expensive. Furthermore, traditional anti-falling beam devices often only consider limiting displacement while neglecting the role of seismic isolation, and may fail under strong earthquakes due to excessive impact forces.

[0004] In summary, existing technologies do not consider integrating vibration damping devices, seismic isolation devices, and anti-falling beam devices into a single bridge structure, and there are technical problems related to the difficulty of maintaining these devices.

[0005] Given the limitations of existing technologies, it is necessary to propose an integrated device and corresponding bridge structure that organically combines anti-fall beam and seismic isolation functions to solve or at least alleviate the above-mentioned defects. Utility Model Content

[0006] The main purpose of this utility model is to provide a seismic isolation bridge, which aims to solve the technical problem that the existing bridge structure has seismic isolation devices, vibration damping devices, and anti-falling beam devices arranged independently, making maintenance difficult.

[0007] To achieve the above objectives, this utility model provides a bridge anti-fall and vibration isolation device, including a limiting energy dissipation component, a first lateral flexible connector, a second lateral flexible connector, a top limiting vibration isolation and detachment component, and a top flexible connector. The first lateral flexible connector is detachably disposed on the transverse side wall of the limiting energy dissipation component, the second lateral flexible connector is detachably disposed on the longitudinal side wall of the limiting energy dissipation component, and the top limiting vibration isolation and detachment component is detachably disposed on the top surface of the limiting energy dissipation component. Both ends of the top limiting vibration isolation and detachment component extend laterally and cantilever outwards, and the top flexible connector is provided on the cantilever end of the top limiting vibration isolation and detachment component.

[0008] Furthermore, the limiting energy dissipation component includes a rigid limiting box and a honeycomb energy dissipation mechanism. The honeycomb energy dissipation mechanism is housed in the rigid limiting box and includes interconnected multi-circle composite energy dissipation units and foam filling units that fill the multi-circle composite energy dissipation units. The first lateral flexible connector, the second lateral flexible connector, and the top limiting shock absorption and detachment component are respectively connected to the rigid limiting box.

[0009] Furthermore, the rigid limiting box is a rectangular box, which includes a bottom plate, four side plates, a top plate, and stiffening ribs. The bottom of the four side plates is fixedly connected to the bottom plate through the stiffening ribs, and the top plate is arranged on the top of the four side plates. The honeycomb energy dissipation mechanism is housed in the space enclosed by the bottom plate, the four side plates, and the top plate.

[0010] Furthermore, bolt connection holes are provided on the bottom plate, the four side plates, and the top plate of the container.

[0011] Furthermore, the top limiting and shock-absorbing detachment assembly includes a distribution beam, a connecting base, and a connecting vertical plate. The connecting base is detachably mounted on the rigid limiting box. The first end of the connecting vertical plate is fixedly mounted on the connecting base, and the second end of the connecting vertical plate extends upward and is fixedly connected to the distribution beam. Top flexible connectors are respectively hung at both ends of the distribution beam.

[0012] Furthermore, the top flexible connector includes a vertical spring, the top of which is welded to the distribution beam.

[0013] Furthermore, the first lateral flexible connector includes a first connecting steel plate and a first transverse spring. The first connecting steel plate is detachably disposed on the transverse side wall of the rigid limiting box, and the first end of the first transverse spring is disposed on the first connecting steel plate. Furthermore, the second lateral flexible connector includes a third connecting steel plate and a second transverse spring. The third connecting steel plate is detachably disposed on the longitudinal side wall of the rigid limiting box, and the first end of the second transverse spring is disposed on the third connecting steel plate.

[0014] This utility model also provides a seismic isolation bridge, including piers, bearings, box girders, and the aforementioned anti-fall and seismic isolation devices for bridges. The box girders are supported on the piers by the bearings, and the anti-fall and seismic isolation devices for bridges are disposed between the piers and the box girders. The anti-fall and seismic isolation devices for bridges are arranged one-to-one with the box girders and are located at the ends of the box girders. Further, two box girders are disposed opposite each other on the piers, and the anti-fall and seismic isolation devices for bridges are arranged one-to-one with the box girders. The rigid limiting box bodies of the two anti-fall and seismic isolation devices for bridges are arranged at intervals and fixedly connected by an intermediate connecting mechanism.

[0015] Compared with the prior art, the seismic isolation bridge provided by this utility model has the following beneficial effects:

[0016] The vibration-damping bridge provided by this utility model includes a limiting energy-dissipating component, a first lateral flexible connector, a second lateral flexible connector, a top limiting vibration-damping detachment component, and a top flexible connector. The first lateral flexible connector is detachably disposed on the transverse sidewall of the limiting energy-dissipating component, the second lateral flexible connector is detachably disposed on the longitudinal sidewall of the limiting energy-dissipating component, and the top limiting vibration-damping detachment component is detachably disposed on the top surface of the limiting energy-dissipating component. Both ends of the top limiting vibration-damping detachment component extend laterally and cantilever outwards. A top flexible connector is provided on the cantilevered end of the top limiting vibration-damping detachment component, so that the first lateral flexible connector, the second lateral flexible connector, and the top flexible connector are connected. The flexible connector and the top limiting and damping detachment component are detachably mounted on the limiting energy dissipation component. When a structural component needs to be repaired or replaced, the corresponding structural component can be directly disassembled and replaced. Furthermore, by setting the first lateral flexible connector, the second lateral flexible connector, and the top limiting and damping detachment component, when the force on the first lateral flexible connector, the second lateral flexible connector, and the top limiting and damping detachment component is within the deformation range, flexible deformation will not cause rigid impact to the limiting energy dissipation component; when the force is outside the deformation range, the force is transferred to the limiting energy dissipation component. The limiting energy dissipation component works to dissipate energy and dampen vibration, with good vibration reduction and isolation effect, and is easy to maintain. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is one of the three-dimensional structural schematic diagrams of the vibration damping and isolation device in one embodiment of the present utility model;

[0019] Figure 2This is a second three-dimensional structural schematic diagram of the vibration damping and isolation device in another embodiment of the present utility model;

[0020] Figure 3 for Figure 2 Side view of the vibration damping and isolation device in the middle;

[0021] Figure 4 for Figure 3 Sectional view at point BB;

[0022] Figure 5 This is one of the three-dimensional structural schematic diagrams of a vibration-damping and isolation bridge in one embodiment of the present utility model;

[0023] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0024] Figure 7 This is a side view of a seismic isolation bridge according to a preferred embodiment of the present invention;

[0025] Figure 8 This is a front view of a seismic isolation bridge according to a preferred embodiment of the present invention;

[0026] Figure 9 This is one of the partial three-dimensional structural schematic diagrams of a seismic isolation and vibration reduction bridge in another embodiment of the present invention;

[0027] Figure 10 This is the second partial three-dimensional structural schematic diagram of a seismic isolation bridge in another embodiment of the present invention.

[0028] Legend:

[0029] 100. Seismic isolation bridge; 10. Pier; 20. Bearing; 30. Box girder body; 31. Bottom beam plate; 32. Receiving connection and positioning groove; 33. Box girder cavity; 34. Inspection slot; 40. Anti-fall and seismic isolation device for bridges; 41. Limiting energy dissipation component; 411. Rigid limiting box; 4111. Box bottom plate; 4112. Four-sided side plate; 4113. Box top plate; 4114. Box stiffening rib; 412. Honeycomb energy dissipation mechanism; 4121. Multi-circle composite energy dissipation unit; 4122. Foam filling unit; 42. First lateral flexible connector; 43. Second lateral flexible connector; 44. Top limiting and shock absorption release component; 45. Top flexible connector; 50. Intermediate connection mechanism.

[0030] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0035] Please refer to the appendix. Figure 1 , Figure 2 , Figure 3 and Figure 4 This utility model provides a bridge anti-fall and vibration isolation device 40, including a limiting energy dissipation component 41, a first lateral flexible connector 42, a second lateral flexible connector 43, a top limiting vibration damping and detachment component 44, and a top flexible connector 45. The first lateral flexible connector 42 is detachably disposed on the transverse side wall of the limiting energy dissipation component 41, the second lateral flexible connector 43 is detachably disposed on the longitudinal side wall of the limiting energy dissipation component 41, and the top limiting vibration damping and detachment component is detachably disposed on the top surface of the limiting energy dissipation component 41. Both ends of the top limiting vibration damping and detachment component extend laterally and cantilever outwards, and the top flexible connector 45 is provided on the cantilever end of the top limiting vibration damping and detachment component.

[0036] The bridge anti-fall and vibration isolation device 40 provided by this utility model includes a limiting energy dissipation component 41, a first lateral flexible connector 42, a second lateral flexible connector 43, a top limiting vibration isolation and detachment component 44, and a top flexible connector 45. The first lateral flexible connector 42 is detachably disposed on the transverse side wall of the limiting energy dissipation component 41, the second lateral flexible connector 43 is detachably disposed on the longitudinal side wall of the limiting energy dissipation component 41, and the top limiting vibration isolation and detachment component is detachably disposed on the top surface of the limiting energy dissipation component 41. Both ends of the top limiting vibration isolation and detachment component extend laterally and cantilever outwards. The top flexible connector 45 is provided on the cantilever end of the top limiting vibration isolation and detachment component, so that the first lateral flexible connector 42, the second lateral flexible connector 43, the third lateral flexible connector 44, the fourth lateral flexible connector 45, the fifth lateral flexible connector 46, the sixth lateral flexible connector 47, the seventh lateral flexible connector 48, the septum flexible connector 49, the septum flexible connector 40, the septum flexible connector 41, the septum flexible connector 42, the septum flexible connector 43, the septum flexible connector 44, the septum flexible connector 45, the septum flexible connector 46, the septum flexible connector 47, the septum flexible connector 48, the septum flexible connector 49, the septum flexible connector 41, the septum flexible connector 41, the septum flexible connector 42, the septum flexible connector 43, the septum flexible connector 44, the septum flexible connector 45, the septum flexible connector 46, the septum flexible connector 47, the septum flexible connector The two lateral flexible connectors 43 and the top limiting and damping detachment component 44 are detachably mounted on the limiting energy dissipation component 41. When a structural component needs to be repaired or replaced, the corresponding structural component can be directly disassembled and replaced. Furthermore, by setting the first lateral flexible connector 42, the second lateral flexible connector 43, and the top limiting and damping detachment component 44, when the force on the first lateral flexible connector 42, the second lateral flexible connector 43, and the top limiting and damping detachment component 44 is within the deformation range, flexible deformation will not cause rigid impact to the limiting energy dissipation component 41; when the force is outside the deformation range, the force will be transferred to the limiting energy dissipation component 41. The limiting energy dissipation component 41 works to dissipate energy and dampen vibration, with good vibration reduction and isolation effect, and is easy to maintain.

[0037] Furthermore, the limiting energy dissipation component 41 includes a rigid limiting box 411 and a honeycomb energy dissipation mechanism 412. The honeycomb energy dissipation mechanism 412 is housed within the rigid limiting box 411. The honeycomb energy dissipation mechanism 412 includes interconnected multi-circle composite energy dissipation units 4121 and foam filling units 4122 that fill the multi-circle composite energy dissipation units 4121. The first lateral flexible connector 42, the second lateral flexible connector 43, and the top limiting shock absorption and detachment component 44 are respectively connected to the rigid limiting box 411.

[0038] Furthermore, the rigid limiting box 411 is a rectangular box, which includes a bottom plate 4111, four side plates 4112, a top plate 4113, and stiffening ribs 4114. The bottom of the four side plates 4112 is fixedly connected to the bottom plate 4111 through the stiffening ribs, and the top plate 4113 is arranged on the top of the four side plates 4112. The honeycomb energy dissipation mechanism 412 is housed in the space enclosed by the bottom plate 4111, the four side plates 4112, and the top plate 4113.

[0039] Furthermore, bolt connection holes are provided on the bottom plate 4111, the four side plates 4112, and the top plate 4113 of the box.

[0040] Furthermore, the top limiting and shock-absorbing detachment assembly 44 includes a distribution beam, a connecting base, and a connecting vertical plate. The connecting base is detachably mounted on the rigid limiting box 411. The first end of the connecting vertical plate is fixedly mounted on the connecting base, and the second end of the connecting vertical plate extends upward and is fixedly connected to the distribution beam. Top flexible connectors 45 are respectively hung at both ends of the distribution beam.

[0041] Furthermore, the top flexible connector 45 includes a vertical spring, the top of which is welded to the distribution beam.

[0042] Furthermore, the first lateral flexible connector 42 includes a first connecting steel plate and a first transverse spring. The first connecting steel plate is detachably disposed on the transverse side wall of the rigid limiting box 411, and the first end of the first transverse spring is disposed on the first connecting steel plate.

[0043] Furthermore, the second lateral flexible connector 43 includes a third connecting steel plate and a second transverse spring. The third connecting steel plate is detachably disposed on the longitudinal side wall of the rigid limiting box 411, and the first end of the second transverse spring is disposed on the third connecting steel plate.

[0044] This utility model also provides a seismic isolation bridge 100, including a pier 10, a support 20, a box girder 30, and the aforementioned anti-fall and seismic isolation device 40 for bridges. The box girder 30 is supported on the pier 10 by the support 20. The anti-fall and seismic isolation device 40 for bridges is disposed between the pier 10 and the box girder 30. The anti-fall and seismic isolation device 40 for bridges is arranged in a one-to-one correspondence with the box girder 30 and is located at the end of the box girder 30.

[0045] Furthermore, two box girders 30 are positioned opposite each other on the piers 10, and bridge anti-fall and vibration isolation devices 40 are arranged one-to-one with the box girders 30. The rigid limiting boxes 411 of the two bridge anti-fall and vibration isolation devices 40 are arranged at intervals and fixedly connected by an intermediate connecting mechanism 50.

[0046] In an optional embodiment, the seismic isolation bridge (a bridge with combined anti-fall and seismic isolation) 100 provided by this utility model includes piers 10, supports 20, box girder 30, and anti-fall and seismic isolation devices 40 for bridges. The anti-fall and seismic isolation devices 40 are arranged one-to-one with the box girder 30, and are positioned between the piers 10 and the box girder 30 to reduce and isolate vibrations and prevent the box girder 30 from falling off the piers 10. The system includes a limiting energy dissipation component 41, a first lateral flexible connector 42, a second lateral flexible connector 43, a top limiting shock absorption and release component 44, and a top flexible connector 45. The limiting energy dissipation component 41 is fixedly mounted on the pier 10. The first end of the limiting energy dissipation component 41 is fixedly mounted on the pier 10, and the second end of the limiting energy dissipation component 41 extends into the receiving connection positioning groove 32. The first lateral flexible connector 42 is located between the lateral side wall of the limiting energy dissipation component 41 and the lateral groove wall of the receiving connection positioning groove 32. The second lateral flexible connector 43 is located between the longitudinal side wall of the limiting energy dissipation component 41 and the longitudinal groove wall of the accommodating connection positioning groove 32. The top flexible connector 45 is located between the lateral extension end of the top limiting shock absorption and release component and the bottom beam plate 31. By extending the limiting energy dissipation component 41 into the accommodating connection positioning groove 32 and flexibly connecting it with the box girder 30, it can prevent falling and reduce vibration in the longitudinal, lateral, and vertical directions of the box girder 30. The flexible connection can adapt to the deformation requirements of the bridge structure in all directions. When the time limit energy dissipation component 41 does not play an energy dissipation role; under extreme conditions such as strong earthquakes, the limit energy dissipation component 41 performs multi-directional limit and vibration reduction energy dissipation to ensure all-round protection of structural safety; the solution of this utility model integrates the limit energy dissipation component 41, the first lateral flexible connector 42, the second lateral flexible connector 43, the top limit vibration reduction and detachment component 44, and the top flexible connector 45, which can not only limit in the longitudinal, lateral, and vertical directions, but also dissipate energy in the longitudinal, lateral, and vertical directions.

[0047] Please refer to Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 as well as Figure 10This utility model also provides a vibration-damping bridge 100, including a pier 10, a support 20, a box girder 30, and a bridge anti-fall and vibration-damping device 40. The box girder 30 is supported on the pier 10 by the support 20. The bridge anti-fall and vibration-damping device 40 is disposed between the pier 10 and the box girder 30. The bridge anti-fall and vibration-damping device 40 is arranged one-to-one with the box girder 30 and is located at the end of the box girder 30. The bottom of the box girder 30 is provided with a receiving and connecting positioning groove 32 that runs vertically through the bottom beam plate 31 of the box girder 30. The receiving and connecting positioning groove 32 communicates with the box girder cavity 33 of the box girder 30. The bridge anti-fall and vibration-damping device 40 includes a limiting energy dissipation component 41, a first lateral flexible connector 42, a second lateral flexible connector 43, a top limiting vibration-damping and detachment component 44, and a top flexible connector 45. The first end of the limiting energy dissipation component 41 is fixedly mounted on the pier 10, and the second end of the limiting energy dissipation component 41 extends into the receiving connection positioning groove 32. The first lateral flexible connector 42 is located between the transverse side wall of the limiting energy dissipation component 41 and the transverse groove wall of the receiving connection positioning groove 32. The second lateral flexible connector 43 is located between the longitudinal side wall of the limiting energy dissipation component 41 and the longitudinal groove wall of the receiving connection positioning groove 32. The top limiting shock absorption and detachment component is located in the box girder cavity 33. The bottom of the top limiting shock absorption and detachment component extends downward and extends into the receiving connection positioning groove 32 and is fixedly connected to the limiting energy dissipation component 41. The two ends of the top limiting shock absorption and detachment component extend laterally to the outside of the receiving connection positioning groove 32. The top flexible connector 45 is located between the transverse extension end of the top limiting shock absorption and detachment component and the bottom beam plate 31.

[0048] The present invention provides a seismic isolation and damping bridge 100, comprising a pier 10, a bearing 20, a box girder 30, and a bridge anti-fall-damping and seismic isolation device 40. The bridge anti-fall-damping and seismic isolation device 40 is arranged in a one-to-one correspondence with the box girder 30, and is positioned between the pier 10 and the box girder 30 for vibration reduction, seismic isolation, and to prevent the box girder 30 from falling off the pier 10. The bridge anti-fall-damping and seismic isolation device 40 includes a limiting energy dissipation component 41 and a first side... The first end of the limiting energy dissipation component 41 is fixed to the pier 10, and the second end of the limiting energy dissipation component 41 extends into the receiving connection positioning groove 32. The first lateral flexible connector 42 is located between the transverse side wall of the limiting energy dissipation component 41 and the transverse groove wall of the receiving connection positioning groove 32. The second lateral flexible connector 43 is located on the limiting energy dissipation component. Between the longitudinal sidewall of 41 and the longitudinal groove wall of the accommodating connection positioning groove 32, the top flexible connector 45 is located between the lateral extension end of the top limiting and damping detachment component and the bottom beam plate 31. By extending the limiting energy dissipation component 41 into the accommodating connection positioning groove 32 and flexibly connecting it with the box girder 30, it can prevent falling and reduce vibration in the longitudinal, lateral, and vertical directions of the box girder 30. The flexible connection can adapt to the deformation requirements of the bridge structure in all directions. At this time, the limiting energy dissipation component 41 does not play an energy dissipation role. Under extreme conditions such as strong earthquakes, the limiting energy dissipation component 41 can perform multi-directional limiting and vibration reduction and energy dissipation to ensure all-round protection of structural safety. The solution of this utility model integrates the limiting energy dissipation component 41, the first lateral flexible connector 42, the second lateral flexible connector 43, the top limiting and damping detachment component 44, and the top flexible connector 45, which can not only limit in the longitudinal, lateral, and vertical directions, but also dissipate energy in the longitudinal, lateral, and vertical directions.

[0049] Understandably, in this utility model, the box girder 30 is a precast box girder or a cast-in-place box girder; the bridge anti-fall and vibration isolation device 40 is arranged in a one-to-one correspondence with the box girder 30. If two box girders 30 are arranged longitudinally and spliced ​​together on the pier 10, then each box girder 30 is provided with a bridge anti-fall and vibration isolation device 40 between it and the pier 10; if only one box girder 30 is arranged on the pier 10 at the very end, then the corresponding bridge anti-fall and vibration isolation device 40 is provided between it and the pier 10.

[0050] Understandably, the flexible connection in this utility model refers to the connection through structures such as elastic elements or rubber-plastic elements, which can adapt to small deformations and transmit force when large deformations occur.

[0051] Please refer to this again. Figure 5Understandably, in the present invention, the first lateral flexible connector 42, the second lateral flexible connector 43, the top limiting shock absorption and detachment component 44, and the top flexible connector 45 are integrated and arranged based on the limiting energy dissipation component 41, thereby realizing that the anti-falling beam device not only has the function of limiting displacement, but also has the function of shock absorption and isolation, avoiding the effect of failure due to excessive impact force under strong earthquakes.

[0052] Furthermore, the limiting energy-consuming component 41 is detachably mounted on the pier 10.

[0053] Furthermore, the accommodating connection positioning groove 32 is a lateral opening groove with an opening on one side. It can be understood that the accommodating connection positioning groove 32 can be a groove structure that is closed on all four sides, or it can be a lateral opening groove structure with an opening on one side. In this utility model, in order to facilitate construction and observation, the end of the box girder 30 has an opening, so that the accommodating connection positioning groove 32 is a lateral opening groove with an opening on one side.

[0054] Please refer to this again. Figure 4 , Figure 5 and Figure 6 Furthermore, the limiting energy dissipation component 41 is located in the middle of the pier 10, and the support 20 is located on the outside of the limiting energy dissipation component 41. The limiting energy dissipation component 41 includes a rigid limiting box 411 and a honeycomb energy dissipation mechanism 412. The honeycomb energy dissipation mechanism 412 is housed in the rigid limiting box 411. The honeycomb energy dissipation mechanism 412 includes interconnected multi-circle composite energy dissipation units 4121 and foam filling units 4122 that fill the multi-circle composite energy dissipation units 4121. The first lateral flexible connector 42, the second lateral flexible connector 43, and the top limiting shock absorption and detachment component 44 are respectively connected to the rigid limiting box 411. In this embodiment, multiple multi-circle composite energy dissipation units 4121 are interconnected and combined to form an internal core energy dissipation component under the synergistic effect of foam filling unit 4122. In specific implementation, the longitudinal and transverse stiffness of the internal core energy dissipation component can be flexibly adjusted by adjusting the number of multi-circle composite energy dissipation units 4121 arranged longitudinally and laterally to meet different seismic resistance requirements.

[0055] Please refer to this again. Figure 4 Specifically, the core skeleton of the multi-circle composite energy dissipation unit 4121 is formed by welding together the central core circular tube, the outer ring circular tubes arranged in regular hexagons, and the connecting steel plates between them. The enclosed space is filled with foam filler to form foam filler unit 4122, so that the limiting energy dissipation component 41 is a skeleton-foam filler dense structure, which together bears the seismic load transmitted by the superstructure of the bridge.

[0056] More preferably, the stiffness of the multi-circle composite energy dissipation unit 4121 can also be designed and adjusted. By adjusting the diameter of the circular steel pipe, the wall thickness of the circular steel pipe, the length of the connecting steel plate, the thickness of the connecting steel plate, and the overall height of the multi-circle composite energy dissipation unit 4121, the seismic resistance requirements of different seismic intensity zones and different types of bridge structures can be met.

[0057] Furthermore, the top of the pier 10 is pre-embedded with a pier top pre-embedded connector. The rigid limiting box 411 is a rectangular box. The rigid limiting box 411 includes a box bottom plate 4111, four side plates 4112, a box top plate 4113, and a box stiffening rib 4114. The bottom of the four side plates 4112 is fixedly connected to the box bottom plate 4111 through the stiffening rib. The box top plate 4113 is arranged on the top of the four side plates 4112. The honeycomb energy dissipation mechanism 412 is housed in the space enclosed by the box bottom plate 4111, the four side plates 4112, and the box top plate 4113. The box bottom plate 4111 is fixedly connected to the pier top pre-embedded connector.

[0058] Understandably, the pre-embedded connecting parts on the pier top can be pre-embedded fastening bolts, or pre-embedded steel plates or other pre-embedded components.

[0059] In specific implementation, bolt holes are provided on the four side plates 4112 and the top plate 4113. The bolt holes on the four side plates 4112 are used to connect the intermediate connecting mechanism 50, the first lateral flexible connector 42, the second lateral flexible connector 43 and the rigid limiting box 411, respectively. The bolt holes on the top plate 4113 are used to connect the top limiting shock absorption and detachment assembly 44 and the rigid limiting box 411.

[0060] Furthermore, the top limiting and shock-absorbing detachment assembly 44 includes a distribution beam, a connecting base, and a connecting vertical plate. The connecting base is fixedly mounted on the rigid limiting box 411. The first end of the connecting vertical plate is fixedly mounted on the connecting base. The second end of the connecting vertical plate extends upward and into the box girder cavity 33. The distribution beam is mounted on the second end of the connecting vertical plate, and a vertical gap is left between the end of the distribution beam and the bottom beam plate 31. Top flexible connectors 45 are respectively provided at both ends of the distribution beam, and the top flexible connectors 45 are located between the bottom beam plate 31 and the distribution beam.

[0061] Furthermore, a first embedded connector is pre-embedded in the bottom beam plate 31, and the top flexible connector 45 includes a vertical spring and a top connecting steel plate. The top connecting steel plate is fixed to the surface of the bottom beam plate 31 through the first embedded connector, and the vertical spring is located in the vertical gap and elastically abuts against the distribution beam and the top connecting steel plate.

[0062] In practical implementation, the connecting vertical plate is fixedly connected between the connecting base and the distribution beam. The connecting base has bolt holes corresponding to the top plate 4113 of the box, facilitating the modular installation and disassembly of the top limiting and damping release device. The vertical connecting plate is composed of cross-welded longitudinal and transverse steel plates and is used to transfer vertical loads. The height of the vertical connecting plate can be flexibly adjusted as needed. The distribution beam is symmetrically arranged relative to the mid-section of the rigid limiting box 411. The vertical projection length of the distribution beam overlaps with the superstructure beam of the bridge to a certain extent, that is, both ends of the distribution beam extend to the outside of the accommodating connecting positioning groove 32. The vertical spring is located in the vertical gap and elastically supports the distribution beam and the top connecting steel plate. The top of the vertical spring is welded to the distribution beam and is weakly connected to the superstructure beam of the bridge. Under normal use conditions, the top limiting and damping release device can adapt to the vertical deformation requirements of the bridge structure through the vertical spring and the distribution beam. In extreme cases, it can prevent the support 20 from being released and can play a role in vertical vibration reduction.

[0063] Furthermore, a second embedded connector is pre-embedded in the transverse groove wall of the accommodating connecting positioning groove 32. The first lateral flexible connector 42 includes a first connecting steel plate, a first transverse spring, and a second connecting steel plate. The first connecting steel plate is disposed on the transverse side wall of the rigid limiting box 411, and the second connecting steel plate is fixedly disposed on the transverse groove wall of the accommodating connecting positioning groove 32 through the second embedded connector. The first transverse spring elastically abuts against the first connecting steel plate and the second connecting steel plate. Furthermore, a third embedded connector is pre-embedded in the longitudinal groove wall of the accommodating connecting positioning groove 32. The second lateral flexible connector 43 includes a third connecting steel plate, a second transverse spring, and a fourth connecting steel plate. The third connecting steel plate is disposed on the longitudinal side wall of the rigid limiting box 411, and the fourth connecting steel plate is fixedly disposed on the longitudinal groove wall of the accommodating connecting positioning groove 32 through the third embedded connector. The second transverse spring elastically abuts against the third connecting steel plate and the fourth connecting steel plate.

[0064] Furthermore, the outer end face of the bottom of the box girder 30 is recessed to form a maintenance slot 34. Understandably, when the two box girders 30 are arranged longitudinally on the pier 10, by setting the outer end face of the bottom of the box girder 30 to form a maintenance slot 34, a concave gap with a smaller upper part and a larger lower part is formed, which reserves assembly space. Finally, the maintenance and assembly of the bridge anti-fall-damping and vibration isolation device 40 can be realized within the concave gap.

[0065] In practical implementation, the limiting energy dissipation component 41 is weakly connected to the bottom beam plate 31 of the bridge superstructure through the first lateral flexible connector 42 in the lateral direction, and weakly connected to the bottom beam plate 31 of the bridge superstructure through the second lateral flexible connector 43 in the longitudinal direction. The limiting energy dissipation component 41 is also weakly connected to the bottom beam plate 31 in the vertical direction through the top limiting shock absorption and detachment component 44 and the top flexible connector 45. Weak connections are achieved simultaneously in the longitudinal, lateral, and vertical directions. A single limiting energy dissipation component 41 is flexibly connected to three connection structures and can be detached, which facilitates the modular installation and disassembly of the connection structures and can adapt to different deformation requirements in the longitudinal and transverse directions of the bridge structure under normal use.

[0066] In practice, in order to reserve space for installation and replacement, the concave gap was designed, the end transverse diaphragms of the bridge superstructure were removed, the thickness of the top plate, web and bottom plate of the beam end of the bridge superstructure was increased, and the center line of the beam end web was arranged to coincide with the center line of the support 20 as much as possible to ensure that the vertical load is transferred through the beam end web.

[0067] Please refer to Figure 8 and... Figure 9 Furthermore, two box girders 30 are arranged longitudinally on the piers 10, and bridge anti-fall and vibration isolation devices 40 are arranged one-to-one with the box girders 30. The two bridge anti-fall and vibration isolation devices 40 are arranged longitudinally at intervals on the piers 10, and the rigid limiting boxes 411 of the bridge anti-fall and vibration isolation devices 40 are fixedly connected by an intermediate connecting mechanism 50. Specifically, the two rigid limiting boxes 411 are rigidly connected by the intermediate connecting mechanism 50 to cooperate in stress deformation. The intermediate connecting mechanism 50 consists of two vertical plates arranged at intervals and longitudinal and transverse connecting plates welded between the vertical plates. Bolt holes corresponding to the rigid limiting boxes 411 are opened on the vertical plates to facilitate the modular installation and disassembly of the intermediate connecting mechanism 50.

[0068] This utility model also provides a construction method for a seismic isolation bridge 100, which is used to construct the aforementioned seismic isolation bridge 100. The seismic isolation bridge 100 includes a pier 10, a support 20, and a box girder 30. The box girder 30 is supported on the pier 10 by the support 20. A pier top embedded connector is pre-embedded on the top surface of the pier 10. The box girder 30 has a box girder cavity 33 and a receiving connection positioning groove 32 communicating with the box girder cavity 33. A first embedded connector, a second embedded connector, and a third embedded connector are pre-embedded in the bottom beam plate 31 of the box girder 30.

[0069] Including the following steps:

[0070] Modular installation limit energy dissipation component 41; specifically including:

[0071] The bottom plate 4111 of the limiting energy dissipation component 41 is fixed to the top surface of the pier 10 by means of pre-embedded connectors on the pier top;

[0072] A multi-circle composite energy-consuming unit 4121 and four-sided side plates 4112 are installed on the bottom plate 4111 of the box. The bottom of the four-sided side plates 4112 are fixedly connected to the bottom plate 4111 of the box through stiffening ribs. After filling with foam material to form a foam filling unit 4122, the top plate 4113 of the box is sealed.

[0073] Modularly installed first lateral flexible connector 42, second lateral flexible connector 43, and top limiting and shock-absorbing release assembly 44; specifically including:

[0074] The first connecting steel plate is placed on the transverse side wall of the rigid limiting box 411; the second connecting steel plate is fixed on the transverse groove wall of the accommodating connecting positioning groove 32 by the second pre-embedded connector; the first transverse spring is elastically loaded between the first connecting steel plate and the second connecting steel plate.

[0075] The third connecting steel plate is placed on the longitudinal side wall of the rigid limiting box 411; the fourth connecting steel plate is fixed on the longitudinal groove wall of the accommodating connecting positioning groove 32 by the third pre-embedded connector; the second transverse spring is elastically loaded between the third connecting steel plate and the fourth connecting steel plate.

[0076] By fixing one end of the connecting vertical plate to the rigid limiting box 411, and supporting the distribution beam at the other end of the connecting vertical plate so that the distribution beam is assembled in the box beam cavity 33, the first pre-embedded connector fixes the top connecting steel plate on the surface of the bottom beam plate 31, and elastically loads the vertical spring between the distribution beam and the top connecting steel plate.

[0077] Furthermore, if there are two bridge anti-fall and vibration isolation devices 40, they are rigidly connected by an intermediate connecting mechanism 50 after the two limiting energy dissipation components 41 are installed.

[0078] This utility model also provides a method for the inspection and maintenance of a seismic isolation bridge 100.

[0079] The bottom plate 4111 of the rigid limiting box 411 is detachably connected to the pre-embedded connector on the top of the pier; the top limiting and shock-absorbing release assembly 44 is detachably connected to the rigid limiting box 411; the first connecting steel plate is detachably connected to the rigid limiting box 411; and the third connecting steel plate is detachably connected to the rigid limiting box 411.

[0080] The top connecting steel plate is detachably connected to the first embedded connector, the second connecting steel plate is detachably connected to the second embedded connector, and the fourth connecting steel plate is detachably connected to the third embedded connector.

[0081] Including the following steps:

[0082] The first lateral flexible connector 42 is removed by removing the first transverse spring elasticity, the first connecting steel plate, and the second connecting steel plate;

[0083] The second lateral flexible connector 43 is removed by removing the second lateral spring elasticity, the third connecting steel plate and the fourth connecting steel plate;

[0084] Remove the top limiting shock absorption release assembly 44, the vertical spring, and the top connecting steel plate;

[0085] Disassemble the limit energy dissipation component 41 and the pre-embedded connector on the top of the pier.

[0086] The above method was used for reassembly.

[0087] Furthermore, during dismantling, if there are two bridge anti-fall and vibration isolation devices 40, the intermediate connecting mechanism 50 shall be dismantled before the two limiting energy dissipation components 41 are dismantled.

[0088] The seismic isolation bridge 100 and construction method provided by this utility model have the following beneficial effects:

[0089] The integrated design of anti-fall beam and seismic isolation functions solves the problems of single function, poor coordination and maintenance caused by the independent installation of multiple devices in traditional technology. Furthermore, the integrated design simplifies the construction process and reduces costs.

[0090] The single limiting energy dissipation component 41 achieves all-round protection of the bridge structure in the longitudinal, transverse and vertical directions to prevent beam falling and to reduce seismic isolation. It also has a multi-circle composite energy dissipation unit 4121. By adjusting the multi-circle composite energy dissipation unit 4121, the structural stiffness can be flexibly adjusted by single or combined adjustment to meet the seismic requirements of different seismic intensity zones and different bridge structure forms.

[0091] It can simultaneously meet the needs of normal structural use and extreme conditions. Under normal use conditions, the flexible connections in the longitudinal, transverse and vertical directions adapt to the deformation needs of the bridge structure in all directions. At this time, the energy dissipation function of the limiting energy dissipation component 41 does not play a role. Under extreme conditions such as strong earthquakes, the rigid limiting box 411 of the limiting energy dissipation component 41 performs multi-directional limiting, and the honeycomb energy dissipation mechanism 412 of the limiting energy dissipation component 41 performs vibration reduction and energy dissipation to ensure structural safety.

[0092] The limiting energy dissipation component 41 is rigidly connected to the pier 10. The three-way contact between the limiting energy dissipation component 41 and other connecting components (beam body) is a weak connection (flexible connection). Compared with the traditional rigid strong connection installation, it is more conducive to the later maintenance and replacement of the device while ensuring normal use function. At the same time, due to the existence of weak connection, the entire bridge bearing 20 system can adopt the form of movable bearing 20, avoiding the need to install expensive seismic bearing 20 and saving project costs.

[0093] The modular and detachable design greatly improves the installation efficiency and maintenance convenience of the device. Even if the rigid limit box 411 is damaged in the event of a rare earthquake, it can be replaced quickly and easily. In other words, the device is easy to repair after an earthquake and has good economic efficiency, saving the maintenance cost of the entire life cycle of the structure.

[0094] Through the design of the intermediate connecting mechanism 50, the flexible connecting mechanism and the top limiting and shock-absorbing release device, the effective coordination between various functional components is realized, which improves the overall seismic resistance. At the same time, any module can be installed, disassembled and repaired, which makes it highly adaptable to the usage scenario and makes the full life cycle management of the device simpler and more efficient.

[0095] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A bridge anti-fall and vibration isolation device, characterized in that, The device includes a limiting energy dissipation component, a first lateral flexible connector, a second lateral flexible connector, a top limiting shock absorption and release component, and a top flexible connector. The first lateral flexible connector is detachably disposed on the lateral side wall of the limiting energy dissipation component, the second lateral flexible connector is detachably disposed on the longitudinal side wall of the limiting energy dissipation component, and the top limiting shock absorption and release component is detachably disposed on the top surface of the limiting energy dissipation component. Both ends of the top limiting shock absorption and release component extend laterally and cantilever outwards. The top flexible connector is provided on the cantilevered end of the top limiting shock absorption and release component.

2. The bridge anti-fall and vibration isolation device according to claim 1, characterized in that, The limiting energy dissipation component includes a rigid limiting housing and a honeycomb energy dissipation mechanism. The honeycomb energy dissipation mechanism is housed within the rigid limiting housing. The honeycomb energy dissipation mechanism includes interconnected multi-circle composite energy dissipation units and foam filler units filling the multi-circle composite energy dissipation units. The first lateral flexible connector, the second lateral flexible connector, and the top limiting and shock-absorbing release assembly are respectively connected to the rigid limiting box.

3. The bridge anti-fall and vibration isolation device according to claim 2, characterized in that, The rigid limiting box is a rectangular box, which includes a bottom plate, four side plates, a top plate, and stiffening ribs. The bottom of the four side plates is fixedly connected to the bottom plate through the stiffening ribs, and the top plate is arranged on the top of the four side plates. The cellular energy dissipation mechanism is housed in the space formed by the bottom plate, the four side plates, and the top plate.

4. The bridge anti-fall and vibration isolation device according to claim 3, characterized in that, Bolt connection holes are provided on the bottom plate, the four side plates and the top plate of the box.

5. The bridge anti-fall and vibration isolation device according to claim 2, characterized in that, The top limiting and shock-absorbing detachment assembly includes a distribution beam, a connecting base, and a connecting vertical plate. The connecting base is detachably mounted on the rigid limiting box. The first end of the connecting vertical plate is fixedly mounted on the connecting base, and the second end of the connecting vertical plate extends upward and is fixedly connected to the distribution beam. The top flexible connector is hung on both ends of the distribution beam.

6. The bridge anti-fall and vibration isolation device according to claim 5, characterized in that, The top flexible connector includes a vertical spring, the top of which is welded to the distribution beam.

7. The bridge anti-fall and vibration isolation device according to claim 2, characterized in that, The first lateral flexible connector includes a first connecting steel plate and a first transverse spring. The first connecting steel plate is detachably disposed on the transverse side wall of the rigid limiting box, and the first end of the first transverse spring is disposed on the first connecting steel plate.

8. The bridge anti-fall and vibration isolation device according to claim 2, characterized in that, The second lateral flexible connector includes a third connecting steel plate and a second transverse spring. The third connecting steel plate is detachably disposed on the longitudinal side wall of the rigid limiting box, and the first end of the second transverse spring is disposed on the third connecting steel plate.

9. A seismic isolation bridge, characterized in that, It includes piers, supports, box girders, and bridge anti-fall and seismic isolation devices as described in any one of claims 1 to 8. The box girder is supported on the piers by supports, and the bridge anti-fall and seismic isolation devices are located between the piers and the box girder. The bridge anti-fall and seismic isolation devices are arranged one-to-one with the box girder and are located at the ends of the box girder.

10. The seismic isolation bridge according to claim 9, characterized in that, Two box girders are positioned opposite each other on the piers. The bridge anti-fall and seismic isolation devices are arranged one-to-one with the box girders. The rigid limiting box bodies of the two bridge anti-fall and seismic isolation devices are arranged at intervals and fixedly connected by an intermediate connecting mechanism.

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