Tenon-shaped anti-falling beam device for bridge in high-intensity earthquake area

Abstract

The utility model discloses a tenon-shaped anti-beam-falling device for a bridge in a high-intensity earthquake area. The tenon-shaped beam falling prevention device is located between a beam body and a pier of a bridge and comprises a fixing assembly, a limiting component and a loading assembly, the fixing assembly is used for being connected to the beam body and comprises a fixing cavity, one end of the limiting component is located in the fixing cavity, and a damping material is arranged between the limiting component and the fixing assembly; the loading assembly is used for being connected to the bridge pier and comprises a loading cavity, and the other end of the limiting component is located in the loading cavity. According to the tenon-shaped beam falling prevention device, the beam body is prevented from falling, manufacturing is easy, installation is convenient, and the construction operation difficulty is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of bridges, and in particular to a seismic isolation and beam-fall prevention device for bridges in high-intensity earthquake zones. Background Art

[0002] During an earthquake, the beam will fall. The falling beam will cause great damage to the bridge structure, and it is also very difficult to repair after the earthquake. The existing anti-falling beam device is used for high-speed railway bridges in earthquake zones with a magnitude of no more than 7 and 8, and cannot meet the design requirements of areas with higher earthquake intensity. Utility Model Content

[0003] A series of simplified concepts are introduced in the application content section, which will be further described in detail in the detailed implementation section. The application content section of this application does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0004] According to one aspect of the present application, a tenon-shaped anti-falling beam device for a bridge in a high-intensity earthquake zone is provided. The bridge comprises a beam body and a pier. The tenon-shaped anti-falling beam device is located between the beam body and the pier. The tenon-shaped anti-falling beam device comprises:

[0005] A fixing assembly, the fixing assembly is used to be connected to the beam body, the fixing assembly comprises a fixing cavity;

[0006] a limiting member, one end of which is located in the fixing cavity, and a shock absorbing material is arranged between the limiting member and the fixing assembly; and

[0007] A loading assembly is used to be connected to the pier, and the loading assembly includes a loading cavity, and the other end of the limiting member is located in the loading cavity.

[0008] According to the tenon-shaped anti-falling beam device for bridges in high-intensity earthquake zones of the present application, the tenon-shaped anti-falling beam device is used for bridges, and the bridge includes a beam body and a pier. The tenon-shaped anti-falling beam device is located between the beam body and the pier. The tenon-shaped anti-falling beam device includes a fixing assembly, a limiting member, and a loading assembly. The fixing assembly is used to connect to the beam body, and the fixing assembly includes a fixing cavity. One end of the limiting member is located in the fixing cavity, and a shock-absorbing material is arranged between the limiting member and the fixing assembly. The loading assembly is used to connect to the pier, and the loading assembly includes a loading cavity, and the other end of the limiting member is located in the loading cavity. In this way, the pier drives the loading assembly to move to contact the limiting member. The shock absorption and energy absorption of the tenon-shaped anti-falling beam device depends on the elastic-plastic deformation of the limiting member. It is used in high-intensity earthquake zones of 8 degrees or more. The movement of the limiting member can squeeze the shock-absorbing material, and the shock-absorbing material produces elastic deformation to play an auxiliary role, thereby achieving a larger gap deformation, thereby improving the design displacement of the tenon-shaped anti-falling beam device. The tenon-shaped anti-falling beam device has a large displacement, realizes displacement energy consumption, expands the application range of the anti-falling beam, avoids the beam body from falling, is simple to make, easy to install, and reduces the difficulty of construction operations.

[0009] Optionally, the loading assembly is movable between a rest position and a vibrating position,

[0010] The loading assembly located in the static position is spaced apart from the limiting member,

[0011] The loading assembly located at the vibration position contacts the limiting member.

[0012] Optionally, the loading assembly can move the limiting member from the hanging position to the swinging position.

[0013] The limiting component located at the swinging position can cause the shock absorbing material to deform, and the shock absorbing material can absorb the vibration of the limiting component.

[0014] Optionally, the fixing assembly further includes a fixing cylinder having the fixing cavity, one end of the limiting member extends into the fixing cylinder, and the limiting member is bonded to the fixing cylinder through the shock-absorbing material.

[0015] Optionally, the fixing assembly further includes a pressure ring, and the pressure ring is located between the limiting member and the fixing cylinder.

[0016] The limiting member located at the hanging position is spaced apart from the pressure ring.

[0017] The limiting member located at the swinging position contacts the pressure ring.

[0018] Optionally, the inner surface of the pressure ring includes a protrusion,

[0019] The protrusion is located in the middle of the pressure ring and protrudes toward the limiting member, and / or,

[0020] The cross-section of the protrusion is an arc shape.

[0021] Optionally, the loading assembly also includes a loading ring, which has the loading cavity, and the inner surface of the loading ring includes an arcuate surface and an inclined surface, the arcuate surface protrudes toward the direction of the limiting member, and the inclined surface extends obliquely from the inner end of the arcuate surface toward the direction of the limiting member.

[0022] Optionally, the load ring is movable between a rest position and a vibration position,

[0023] The loading ring in the static position is spaced apart from the limiting member,

[0024] The inclined surface of the loading ring located at the vibration position contacts the limiting member.

[0025] Optionally, the loading cavity comprises a large-sized portion and a small-sized portion, the large-sized portion is open toward the fixing assembly, and the other end of the limiting member enters the loading cavity through the large-sized portion.

[0026] Optionally, the limiting member includes a large diameter portion and a small diameter portion, the large diameter portion is located between two small diameter portions, one small diameter portion is located in the fixing cavity, and an end of the other small diameter portion is located in the loading cavity.

[0027] Optionally, the fixing assembly further comprises a pressure ring, and the large diameter portion is movable between a hanging position and a swinging position.

[0028] The large diameter portion located at the hanging position is spaced apart from the pressure ring,

[0029] The large diameter portion located at the swing position is in contact with the pressure ring.

[0030] Optionally, the edge of the cross-sectional shape of the small diameter portion is configured to be linear.

[0031] Optionally, the loading assembly further includes a loading plate and an anchoring member, the anchoring member is used to connect the loading plate and the bridge pier, the anchoring member includes an extension section and connecting sections respectively located on both sides of the extension section, and ends of the connecting sections are connected to the loading plate.

[0032] Optionally, the fixing assembly and / or the loading assembly comprises at least one rib.

[0033] Optionally, the shock absorbing material comprises a plastic polyurethane material, and the shock absorbing material is connected to the fixing component by injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The following drawings of the present application are hereby used as part of the present application for understanding the present application. The drawings show the implementation methods of the present application and their descriptions, and are used to explain the device and principle of the present application. In the drawings,

[0035] Figure 1 It is a schematic front cross-sectional view of a tenon-shaped anti-falling beam device according to a preferred embodiment of the present application;

[0036] Figure 2 for Figure 1 A schematic front cross-sectional view of the fixing assembly shown;

[0037] Figure 3 for Figure 2 The schematic diagram of the main cross section of the pressure ring shown;

[0038] Figure 4 for Figure 1 A schematic front view of the limiting component shown;

[0039] Figure 5 for Figure 1 A schematic diagram of a front cross-section of the loading assembly shown;

[0040] Figure 6 for Figure 5 A schematic top view of the loading assembly shown; and

[0041] Figure 7 for Figure 1 A schematic front cross-sectional view of the loading ring is shown.

[0042] Description of reference numerals:

[0043] 100: Tenon-shaped anti-falling beam device 110: Fixing component

[0044] 111: Fixed cavity 112: Fixed cylinder

[0045] 113: Pressure ring 114: Inner surface of the pressure ring

[0046] 115: protrusion 116: pressure plate

[0047] 117: snap-fit ​​groove 118: through hole

[0048] 119: Fixed rib 140: Limiting member

[0049] 141: shock absorbing material 142: large diameter part

[0050] 143: first small diameter portion 144: second small diameter portion

[0051] 145: Hoisting part 160: Loading assembly

[0052] 161: Loading cavity 162: Large size part

[0053] 163: Small size part 164: Loading ring

[0054] 165: Inner surface of the loading ring 166: Arc surface

[0055] 167: Inclined surface 168: Loading cylinder

[0056] 169: Loading plate 170: Anchor member

[0057] 171: first connecting section 172: second connecting section

[0058] 173: Extension section 174: Loading ribs

[0059] 200: Bridge 201: Beam

[0060] 202: Bridge pier DETAILED DESCRIPTION

[0061] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application, some technical features well known in the art are not described.

[0062] In order to thoroughly understand the present application, detailed parts will be presented in the following description to illustrate the present application. Obviously, the implementation of the present application is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present application are described in detail below, but in addition to these detailed descriptions, the present application may also have other embodiments and should not be interpreted as being limited to the embodiments presented here.

[0063] It should be understood that the purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present application, and the singular forms of "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. When the terms "comprise" and / or "include" are used in this specification, they indicate the presence of the features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof. The terms "upper", "lower", "front", "back", "left", "right" and similar expressions used in this application are for illustrative purposes only and are not limiting.

[0064] Ordinal numbers such as "first" and "second" cited in this application are merely identifiers and do not have any other meanings, such as a specific order, etc. In this application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature "above", "above" and "above" a second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature "below", "below" and "below" a second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0065] Hereinafter, specific embodiments of the present application will be described in more detail with reference to the accompanying drawings. These drawings show representative embodiments of the present application and do not limit the present application.

[0066] like Figure 1 As shown, the present application provides a preferred embodiment of a tenon-shaped anti-falling beam device 100 for bridges in high-intensity earthquake zones, and the tenon-shaped anti-falling beam device 100 is used for a bridge 200. The tenon-shaped anti-falling beam device 100 of the present application is a large-displacement tenon-shaped anti-falling beam device. The bridge 200 includes a pier 202 and a beam body 201 located above the pier 202, and the pier 202 can support the beam body 201. The beam body 201 is used to allow vehicles such as vehicles to travel. For example, the beam body 201 is paved with a road surface so that cars and the like can travel on the road surface. The beam body 201 is paved with rails so that rail trains can travel on the rails. The tenon-shaped anti-falling beam device 100 can well support the beam body 201 during an earthquake to prevent the beam body 201 from falling due to vibration.

[0067] The bridge 200 also includes a support, which connects the beam body 201 and the pier 202. The tenon-shaped anti-falling beam device 100 is located on the side of the support. When an earthquake occurs, the pier 202 shakes due to the vibration of the ground. The tenon-shaped anti-falling beam device 100 can reduce shock to avoid affecting the beam body 201 above. The tenon-shaped anti-falling beam device 100 reduces the force transmitted by the pier 202 to prevent the beam body 201 from being deformed or falling due to the inclination of the pier 202.

[0068] The tenon-shaped anti-falling beam device 100 can play the role of shock absorption and seismic isolation. The tenon-shaped anti-falling beam device 100 includes a fixing assembly 110, a limiting member 140 and a loading assembly 160. The fixing assembly 110 is used to be connected to the beam body 201, and the loading assembly 160 is used to be connected to the pier 202. The fixing assembly 110 is fixed to the beam body 201. The beam body 201 can be made of concrete. The fixing assembly 110 can be connected to the beam body 201 by pouring. The limiting member 140 is used to be connected to the beam body 201 through the fixing assembly 110.

[0069] The pier 202 may be made of concrete. The loading assembly 160 may be connected to the pier 202 by casting. The loading assembly 160 shakes with the shaking of the pier 202. The limiting member 140 is configured as a substantially cylindrical structure. A portion of the limiting member 140 is located between the fixing assembly 110 and the loading assembly 160. In particular, a portion of the limiting member 140 is located between the beam body 201 and the pier 202. The shaking of the loading assembly 160 can exert a force on the limiting member 140. The limiting member 140 can weaken the force exerted by the loading assembly 160, thereby reducing the force transmitted to the fixing assembly 110.

[0070] Combination Figure 2 As shown, the fixing assembly 110 includes a fixing cavity 111, and the opening direction of the fixing cavity 111 faces the bridge pier 202. The axial direction of the fixing cavity 111 is parallel to the height direction of the bridge 200. One end of the fixing cavity 111 is closed by the beam body 201, and the other end of the fixing cavity 111 is open toward the bridge pier 202. The fixing assembly 110 is located at the bottom of the beam body 201. The fixing assembly 110 is buried in the bottom plate of the beam end when the beam body 201 is prefabricated.

[0071] like Figure 4 As shown, the limiting member 140 is constructed as a steel tenon. The limiting member 140 is constructed as a cantilever steel tenon. The cantilever limiting member is made of high-quality carbon steel LY345Q or LY460Q material with good plasticity and toughness for earthquake resistance. The limiting member 140 is constructed as a member with a variable cross-section along the axial direction. The limiting member 140 is a circular member with a variable cross-section. The cross-sectional shape of the limiting member 140 is circular. In this way, it can play a role in shock absorption, seismic isolation and limiting for earthquakes in any horizontal direction.

[0072] One end of the limiting member 140 is located in the fixed cavity 111. One end of the limiting member 140 extends into the fixed cavity 111. One end of the limiting member 140 along the length direction of the limiting member 140 extends into the fixed cavity 111. The length direction of the limiting member 140 is parallel to the axial direction of the fixed cavity 111. One end of the limiting member 140 enters the fixed cavity 111 through the open opening of the fixed cavity 111. A shock absorbing material 141 is provided between the limiting member 140 and the fixed assembly 110. The shock absorbing material 141 has adhesiveness. The limiting member 140 can be connected to the fixed assembly 110 through the shock absorbing material 141.

[0073] The position-limiting member 140 is provided with a hoisting portion 145. The hoisting member can be connected to the hoisting portion 145. The hoisting member can hoist the position-limiting member 140 through the hoisting portion 145. Preferably, the hoisting portion 145 is provided to one end of the position-limiting member 140. The hoisting member hoists the position-limiting member 140 to the beam body 201, and allows one end of the position-limiting member 140 to enter the fixing cavity 111.

[0074] The shock absorbing material 141 is poured into the fixing assembly 110 by means of perfusion. The shock absorbing material 141 is bonded to the limiting member 140. The shock absorbing material 141 is also bonded to the fixing assembly 110. The limiting member 140 is bonded to the fixing assembly 110 by means of the shock absorbing material 141. Thus, the limiting member 140 and the fixing assembly 110 are connected together. Preferably, the shock absorbing material 141 comprises a plastic polyurethane material. The fixing assembly 110 is filled with an elastic-plastic polyurethane material. The plastic polyurethane material can form an elastomer. The molecules of the plastic polyurethane material are substantially linear, with no or little chemical cross-linking. The shock absorbing material 141 is connected to the fixing assembly 110 by means of perfusion.

[0075] The loading assembly 160 is located at the top of the pier 202. The loading assembly 160 is embedded in the top surface of the pier when the pier 202 is constructed. The loading assembly 160 includes a loading cavity 161, which is open toward the direction of the limiting member 140. The other end of the limiting member 140 is located in the loading cavity 161. The pier 202 is shaken by vibration. The pier 202 drives the loading cavity 161 to move, and the loading assembly 160 can contact the limiting member 140 to transfer the force applied by the pier 202 to the limiting member 140. The movement of the limiting member 140 can squeeze the shock-absorbing material 141, and the shock-absorbing material 141 produces elastic deformation to offset the force applied by the limiting member 140, thereby offsetting the vibration of the limiting member 140 and preventing the vibration of the limiting member 140 from affecting the fixing assembly 110. In this way, it is possible to prevent the vibration of the limiting member 140 from affecting the beam body 201 and preventing the beam body 201 from falling.

[0076] The movement of the limiting member 140 can squeeze the plastic polyurethane material, and the plastic polyurethane material produces elastic deformation to offset the force applied by the limiting member 140, thereby offsetting the vibration of the limiting member 140, and preventing the vibration of the limiting member 140 from affecting the fixing assembly 110. In this way, the vibration of the limiting member 140 can be prevented from affecting the beam body 201, and the beam body 201 can be prevented from falling.

[0077] The upper end of the limiting member 140 is inserted into the fixing assembly 110 and is injected with polyurethane material to achieve embedded fixation. The lower end of the limiting member 140 is a cantilever structure, and the end of the lower end is suspended in the loading assembly 160. In this way, the fixing assembly 110 and the loading assembly 160 do not need to be completely aligned, which reduces the difficulty of construction. The displacement that can be provided by the tenon-shaped anti-falling beam device 100 between the limiting member 140 and the fixing assembly 110 depends not only on the deformation of the limiting member 140, but the limiting member 140 can also cause the shock-absorbing material 141 to deform to play a buffering role, thereby expanding the displacement provided by the tenon-shaped anti-falling beam device 100, and then expanding the support and application range of the tenon-shaped anti-falling beam device 100, preventing the beam body 201 from falling during high-intensity earthquake shaking, and then being suitable for high-intensity earthquake environments.

[0078] Under normal use (i.e., when the bridge 200 is in operation or during normal driving), the limiting member 140 can freely and effectively release the temperature deformation and temperature force of the beam body 201 through the gap between the limiting member 140 and the fixing assembly 110, and through the gap between the limiting member 140 and the loading assembly 160. The limiting member 140 does not participate in the force and does not affect the normal use of the bridge 200.

[0079] When a high-intensity earthquake (e.g., an earthquake of magnitude 8 or above) occurs, the limiting member 140 enters a shaping and energy-consuming working state, thereby consuming earthquake energy, extending the structural cycle, and reducing earthquake force. At the same time, the limiting member 140 can also limit the displacement of the bridge 200 to prevent beam-falling accidents during earthquakes.

[0080] According to the present application, the mortise beam-fall-proof device 100 for bridges in high-intensity earthquake zones is used for a bridge 200, which includes a beam body 201 and a pier 202. The mortise beam-fall-proof device 100 is located between the beam body 201 and the pier 202. The mortise beam-fall-proof device 100 includes a fixing assembly 110, a limiting member 140 and a loading assembly 160. The fixing assembly 110 is used to be connected to the beam body 201. The fixing assembly 110 includes a fixing cavity 111. One end of the limiting member 140 is located in the fixing cavity 111. A shock-absorbing material 141 is provided between the limiting member 140 and the fixing assembly 110. The loading assembly 160 is used to be connected to the pier 202. The loading assembly 160 includes a loading cavity 161. The other end of the limiting member 140 is located in the loading cavity 161. In this way, the pier 202 drives the loading assembly to move to contact the limiting member 140. The shock absorption and energy absorption of the tenon-shaped anti-drop beam device relies on the elastic-plastic deformation of the limiting member. It is used in high-intensity earthquake zones of 8 degrees or above. The movement of the limiting member 140 can squeeze the shock-absorbing material 141. The elastic deformation of the shock-absorbing material 141 plays an auxiliary role, thereby achieving a larger gap deformation to offset the force applied by the limiting member 140, thereby increasing the design displacement of the tenon-shaped anti-drop beam device 100. The tenon-shaped anti-drop beam device has a large displacement, realizes displacement energy consumption, expands the application range of the anti-drop beam, and avoids the beam body 201 from falling. It is simple to make and easy to install, reducing the difficulty of construction operations.

[0081] More specifically, the movement of the pier 202 can cause the loading assembly 160 to move. The loading assembly 160 can move between the static position and the vibration position. The pier 202 is located at the static position so that the loading assembly 160 is located at the static position. The loading assembly 160 located at the static position does not move. The loading assembly 160 located at the static position is spaced apart from the limiting member 140. The cavity wall of the loading cavity 161 of the loading assembly 160 located at the static position is spaced apart from the limiting member 140. The loading assembly 160 located at the static position is spaced apart from the limiting member 140 along the length direction of the limiting member 140. The loading assembly 160 located at the static position is spaced apart from the limiting member 140 along the radial direction of the limiting member 140. The loading assembly 160 located at the static position does not apply a force to the limiting member 140. The loading assembly 160 located at the static position does not cause the limiting member 140 to move.

[0082] The loading assembly 160 can swing with the pier 202. The vibration of the pier 202 can drive the loading assembly 160 to move. The loading assembly 160 located at the static position is moved to the vibration position by the vibration of the pier 202. The loading assembly 160 located at the static position can move to the vibration position along the radial direction of the limiting member 140. The loading assembly 160 located at the static position can move to the vibration position along the radial direction of the pier 202. The loading assembly 160 can move along the length direction of the beam body 201, and the loading assembly 160 can also move along the width direction of the beam body 201.

[0083] The relative position of the loading assembly 160 at the vibration position is different from that of the loading assembly 160 at the static position. The loading assembly 160 at the vibration position is offset relative to the loading assembly 160 at the static position. The central axis of the loading cavity 161 at the vibration position is offset from the central axis of the fixed cavity 111. The central axis of the loading cavity 161 at the vibration position is offset from the central axis of the limiting member 140. The loading assembly 160 at the vibration position is tilted. The loading assembly 160 at the vibration position is in contact with the limiting member 140.

[0084] The cavity wall of the loading cavity 161 of the loading assembly 160 at the vibration position contacts the limiting member 140. The loading assembly 160 at the vibration position realizes a force transmission connection with the limiting member 140. The loading assembly 160 at the vibration position applies a force to the limiting member 140. The loading assembly 160 at the vibration position can cause the limiting member 140 to deflect. The limiting member 140 is deflected by the force at the vibration position, and then squeezes the shock absorbing material 141, so that the shock absorbing material 141 offsets the vibration of the limiting member 140.

[0085] The limiting member 140 can be moved from the hanging position to the swinging position. The limiting member 140 at the hanging position maintains the hanging state. The limiting member 140 at the hanging position is spaced apart from the loading assembly 160 at the static position. The limiting member 140 at the hanging position is not in contact with the loading assembly 160. The limiting member 140 at the hanging position is spaced apart from the loading assembly 160 along the radial direction of the limiting member 140. The limiting member 140 at the hanging position is spaced apart from the loading assembly 160 along the length direction of the limiting member 140. The limiting member 140 at the hanging position does not cause the shock absorbing material 141 to deform.

[0086] The loading assembly 160 can move the limiting member 140. The loading assembly 160 can apply a force to the limiting member 140, so that the limiting member 140 moves. The loading assembly 160 can move the limiting member 140 from the hanging position to the swinging position. The loading assembly 160 at the vibration position contacts the limiting member 140 to apply a force to the limiting member 140. The loading assembly 160 at the vibration position contacts the limiting member 140 at the hanging position, so that the limiting member 140 at the hanging position moves to the swinging position.

[0087] The limiting member 140 at the swinging position can cause the shock absorbing material 141 to deform, and the shock absorbing material 141 can absorb the vibration of the limiting member 140. In this way, the shock absorbing material 141 offsets the vibration of the limiting member 140 at the swinging position. The shock absorbing material 141 can also offset the force generated between the limiting member 140 at the hanging position and the limiting member 140 at the swinging position. The shock absorbing material 141 can prevent the limiting member 140 from damaging the fixing assembly 110 during the swinging process, thereby protecting the beam body 201. The shock absorbing material 141 can prevent the limiting member 140 at the swinging position from damaging the fixing assembly 110, thereby protecting the beam body 201.

[0088] The tenon-shaped anti-falling beam device 100 can release the temperature force freely during the normal working stage of the bridge 200. The tenon-shaped anti-falling beam device 100 can provide a large plastic deformation (200-250mm) when an earthquake occurs, has the functions of shock absorption and energy consumption, and preventing the beam from falling, and is easy to install and operate.

[0089] like Figure 2 As shown, the fixing assembly 110 also includes a fixing cylinder 112, which is used to connect to the beam body 201. The fixing cylinder 112 is constructed as a cylindrical structure. The fixing cylinder 112 is made of ordinary carbon structural steel Q235 or low alloy steel Q345. The fixing cylinder 112 is used to connect to the beam body 201 by pouring. The axial direction of the fixing cylinder 112 is parallel to the axial direction of the limiting member 140. One end of the fixing cylinder 112 along the axial direction of the limiting member 140 is closed by mortar screed. The top surface of the upper end of the fixing cylinder 112 is flush with the top surface of the box beam bottom plate. The bottom surface of the lower end of the fixing cylinder 112 is flush with the bottom surface of the box beam bottom plate. The other end of the fixing cylinder 112 along the axial direction of the limiting member 140 is open. The other end of the fixing cylinder 112 along the axial direction of the limiting member 140 is open toward the direction of the loading assembly 160. The fixing cylinder 112 has a fixing cavity 111. One end of the limiting member 140 extends into the fixing tube 112. One end of the limiting member 140 is located in the fixing cavity 111 of the fixing tube 112.

[0090] The fixing tube 112 is filled with a shock absorbing material 141. The shock absorbing material 141 is connected to the fixing tube 112 by injection. The elastic-plastic polyurethane material fills the gap between the limiting member 140 and the fixing tube 112, and the polyurethane material is used to achieve the gap deformation of the tenon-shaped anti-falling beam device 100, and plays the effect of reducing the impact effect of the limiting member 140 when the large displacement deformation occurs.

[0091] The limiting member 140 can swing in the fixed cylinder 112. The limiting member 140 can swing in multiple directions in the fixed cylinder 112. The limiting member 140 can rotate and swing in the fixed cylinder 112 around the axial direction of the limiting member 140. The limiting member 140 and the fixed cylinder 112 are separated by a shock-absorbing material 141. The shock-absorbing material 141 also has adhesiveness. The limiting member 140 is bonded to the fixed cylinder 112 through the shock-absorbing material 141. The limiting member 140 is bonded to the inner surface of the fixed cylinder 112 through the shock-absorbing material 141. The limiting member 140 located in the hanging position is spaced apart from the fixed cylinder 112. The limiting member 140 located in the swinging position is spaced apart from the fixed cylinder 112.

[0092] A limiting member 140 is disposed inside the fixed cylinder 112. A beam body 201 is disposed outside the fixed cylinder 112. The limiting member 140 is separated from the beam body 201 by the fixed cylinder 112. The limiting member 140 in the swing position does not touch the fixed cylinder 112. The limiting member 140 in the swing position does not apply a force to the fixed cylinder 112, so as to avoid damage to the fixed cylinder 112, thereby avoiding damage to the beam body 201.

[0093] The fixing assembly 110 also includes a pressure ring 113, which is located between the limiting member 140 and the fixed cylinder 112. The pressure ring 113 is constructed as an annular structure. The pressure ring 113 is made of 40cr material with higher strength and hardness than the limiting member 140, and is subjected to quenching and tempering treatment. The pressure ring 113 is located inside the fixed cylinder 112. The pressure ring 113 is sleeved to the outside of the limiting member 140. The axial direction of the pressure ring 113 is parallel to the axial direction of the limiting member 140. The pressure ring 113 is used to withstand and disperse the pressure applied by the limiting member 140 to avoid damaging the fixed cylinder 112. The pressure ring 113 is nested in the fixed cylinder 112. The pressure ring 113 is nested to the inner surface of the fixed cylinder 112. The inner surface of the fixed cylinder 112 is provided with a snap-fit ​​groove 117, and the pressure ring 113 is embedded in the snap-fit ​​groove 117. The pressure ring 113 is located in the engaging groove 117. The surface of the pressure ring 113 along the axial direction of the limiting member 140 abuts against the engaging groove 117. The engaging groove 117 can limit the pressure ring 113.

[0094] The pressure ring 113 has a pressure hole, which is connected to the fixed cavity 111. The limiting member 140 extends into the fixed cavity 111 through the pressure hole. The limiting member 140 located in the hanging position is spaced apart from the pressure ring 113. The limiting member 140 located in the hanging position does not apply a force to the pressure ring 113. The limiting member 140 located in the swinging position is in contact with the pressure ring 113. The swinging limiting member 140 is in contact with the pressure ring 113. The force generated by the ground vibration on the pier 202 is first transmitted through the contact between the loading assembly 160 and the limiting member 140, and then transmitted through the contact between the limiting member 140 and the pressure ring 113. The force is gradually weakened through the two transmissions. The force applied by the limiting member 140 located in the swinging position is dispersed through the pressure ring 113.

[0095] More specifically, if Figure 3 As shown, the inner surface 114 of the pressure ring 113 includes a protrusion 115. The protrusion 115 is located in the middle of the pressure ring 113. The protrusion 115 is located in the middle of the pressure ring 113 along the axial direction of the limiting member 140. The protrusion 115 protrudes in the direction of the limiting member 140. The protrusion 115 protrudes in the radial direction of the limiting member 140 toward the limiting member 140. The cross-sectional shape of the protrusion 115 is an arc. Preferably, the limiting member 140 located in the swing position contacts the protrusion 115. There can be arc contact between the protrusion 115 and the limiting member 140. As a result, the force applied by the limiting member 140 can be well dispersed. The inner hole of the pressure ring 113 is set as an arc surface. The middle part of the limiting member 140 located in the swing position abuts against the pressure ring 113. Thus, the force applied by the limiting member 140 can be weakened to avoid excessive local stress at the contact point between the limiting member 140 and the pressure ring 113, thereby having good anti-seismic performance.

[0096] In order to make the pressure ring 113 and the fixed cylinder 112 connected more firmly, the fixed assembly 110 further includes a pressing plate 116, which is connected to the fixed cylinder 112. The pressing plate 116 is connected to the circumferential outer surface of the lower end of the fixed cylinder 112. The pressing plate 116 is connected to the surface of the fixed cylinder 112 facing the loading assembly 160 along the axial direction of the limiting member 140. The pressing plate 116 is connected to the other end of the fixed cylinder 112 along the axial direction of the limiting member 140. The pressing plate 116 can be connected to the fixed cylinder 112 by welding.

[0097] The pressure ring 113 is located inside the pressure plate 116. The pressure plate 116 is constructed as an annular structure. The pressure plate 116 is made of ordinary carbon structural steel Q235 or low alloy steel Q345. The pressure plate 116 includes a through hole 118, and the through hole 118 is connected to the fixed cavity 111. The through hole 118 is connected to the interior of the pressure ring 113. One end of the limiting member 140 enters the interior of the pressure ring 113 through the through hole 118, and then enters the fixed cavity 111. The pressure ring 113 is abutted against the fixed cylinder 112 through the pressure plate 116. The pressure ring 113 uses a stiffening ring as the pressure plate 116 and is fixed to the fixed cylinder 112 as a whole. The pressure plate 116 fixes the pressure ring 113 to the lower end of the fixed cylinder 112. The pressure plate 116 is located outside the pressure ring 113. The inner surface of the pressure plate 116 along the axial direction of the limiting member 140 is in contact with the pressure ring 113 . The pressure plate 116 supports the pressure ring 113 .

[0098] In order to ensure the structural strength of the fixing assembly 110, the fixing assembly 110 also includes a fixing rib 119, which is connected to the fixing cylinder 112. The fixing rib 119 includes a side surface and a bottom surface, the side surface of the fixing rib 119 is connected to the fixing cylinder 112, and the bottom surface of the fixing rib 119 is connected to the fixing plate. The fixing rib 119 can support the fixing cylinder 112 to prevent the fixing cylinder 112 from deforming. The pressing plate 116 and the fixing rib 119 are integrally formed with the fixing cylinder 112 by welding. The fixing assembly 110 includes a fixing rib 119, thereby supporting the fixing cylinder 112. Preferably, the fixing assembly 110 includes at least two fixing ribs 119, and the at least two fixing ribs 119 are arranged at intervals along the circumferential direction of the fixing cylinder 112. Thereby, the structural strength of the fixing assembly 110 can be further strengthened.

[0099] As an optional implementation, Figure 4 As shown, the limiting member 140 includes a large diameter portion 142 and a small diameter portion, and the size of the large diameter portion 142 along the radial direction of the limiting member 140 is larger than the size of the small diameter portion. The large diameter portion 142 is located between the two small diameter portions along the axial direction of the limiting member 140. The large diameter portion 142 is located in the middle of the limiting member 140. The size of the large diameter portion 142 along the axial direction of the limiting member 140 is smaller than the size of the small diameter portion. The diameter of the small diameter portion is 0.63 times the diameter of the large diameter portion 142 to achieve the best plastic deformation effect.

[0100] The limiting member 140 includes a first small diameter portion 143 and a second small diameter portion 144, and the large diameter portion 142 is located between the first small diameter portion 143 and the second small diameter portion 144. The first small diameter portion 143 is located in the fixed cavity 111. The first small diameter portion 143 has a hoisting portion 145. The large diameter portion 142 is located in the fixed cavity 111. The second small diameter portion 144 protrudes from the fixed cavity 111. The end of the second small diameter portion 144 is located in the loading cavity 161. The first small diameter portion 143 and the large diameter portion 142 are both located in the fixed cylinder 112. The limiting member 140 is constructed as a tenon body with a variable cross-section along the axial direction. The upper part (i.e., the first small diameter portion 143) and the lower part (i.e., the second small diameter portion 144) of the limiting member 140 are thin, and the middle part (i.e., the large diameter portion 142) of the limiting member 140 is thick. The cross section of the limiting member 140 adopts a linear change law. The edge of the cross-sectional shape of the small diameter portion is constructed to be linear. The edge of the cross-sectional shape of the small diameter portion is configured as a straight line. The size of the portion of the small diameter portion close to the large diameter portion 142 is larger than the size of the end of the small diameter portion. This facilitates construction.

[0101] Both small diameter portions are capable of moving between a hanging position and a swinging position. The second small diameter portion 144 located at the hanging position is spaced apart from the loading assembly 160. The second small diameter portion 144 located at the hanging position is spaced apart from the loading assembly 160 located at the static position. The loading assembly 160 located at the static position does not apply a force to the second small diameter portion 144 located at the hanging position. The loading assembly 160 located at the vibration position contacts the second small diameter portion 144. The loading assembly 160 located at the vibration position applies a force to the second small diameter portion 144 so that the second small diameter portion 144 swings. The second small diameter portion 144 moves from the hanging position to the swinging position. The second small diameter portion 144 drives the first small diameter portion 143 and the large diameter portion 142 to swing.

[0102] The first small diameter portion 143 at the hanging position is spaced apart from the fixing cylinder 112. The first small diameter portion 143 at the hanging position does not apply a force to the shock absorbing material 141. The first small diameter portion 143 at the swing position is spaced apart from the fixing cylinder 112. The first small diameter portion 143 at the swing position applies a force to the shock absorbing material 141. The first small diameter portion 143 at the swing position presses the shock absorbing material 141. The shock absorbing material 141 weakens the force applied by the first small diameter portion 143, thereby preventing the vibration from being transmitted to the beam body 201.

[0103] The large diameter portion 142 can move between the hanging position and the swing position. The large diameter portion 142 at the hanging position is spaced apart from the fixed cylinder 112. The large diameter portion 142 at the hanging position is spaced apart from the pressure ring 113. The large diameter portion 142 at the hanging position does not apply a force to the shock absorbing material 141. The large diameter portion 142 at the swing position is in contact with the pressure ring 113. The force of the large diameter portion 142 at the swing position is applied to the pressure ring 113, and the pressure ring 113 can well disperse the force applied by the large diameter portion 142. Preferably, the large diameter portion 142 at the swing position is in contact with the protrusion 115. The protrusion 115 is configured as an arc structure. The protrusion 115 and the large diameter portion 142 can be in arc contact. The large diameter portion 142 at the swing position is against the arc surface. Thus, the force applied by the limiting member 140 can be weakened, and good anti-seismic performance is provided. Thus, the force applied by the large diameter portion 142 can be well dispersed.

[0104] The loading assembly 160 further includes a loading ring 164, which is used to connect to the pier 202. Figure 7 As shown, the loading ring 164 is constructed as an annular structure. The loading ring 164 is made of 40cr material with higher strength and hardness than the limiting member 140, and is subjected to a quenching and tempering treatment. The axial direction of the loading ring 164 is parallel to the axial direction of the limiting member 140. One end of the loading ring 164 in the axial direction of the limiting member 140 toward the fixing assembly 110 is open. The other end of the loading ring 164 in the axial direction of the limiting member 140 is closed. The other end of the loading ring 164 in the axial direction of the limiting member 140 is closed by the pier 202. The loading ring 164 has a loading cavity 161. The inner surface 165 of the loading ring 164 forms the loading cavity 161. The end of the limiting member 140 is located in the loading cavity 161. The end of the second small diameter portion 144 is located in the loading cavity 161.

[0105] The loading ring 164 includes an inner surface 165, and the inner surface 165 of the loading ring 164 faces the limiting member 140. The inner hole of the loading ring 164 is in a shape of being larger at the top and smaller at the bottom, and a circular arc chamfer is arranged at the upper end of the inner hole. That is, the loading cavity 161 is in a shape of being larger at the top and smaller at the bottom, and a circular arc chamfer is arranged at the upper end of the loading cavity 161. The inner surface 165 of the loading ring 164 includes an arc surface 166 and an inclined surface 167, and the arc surface 166 is connected to the inclined surface 167. The arc surface 166 is closer to the fixing assembly 110 than the inclined surface 167 along the axial direction of the limiting member 140. The arc surface 166 can also form an open opening of the loading cavity 161. The limiting member 140 enters the loading cavity 161 through the opening formed by the arc surface 166. The arc surface 166 protrudes in the direction of the limiting member 140. The arc surface 166 protrudes outward in the direction of the limiting member 140. The arc surface 166 protrudes toward the limiting member 140 along the radial direction of the limiting member 140 .

[0106] The inclined surface 167 extends obliquely from the inner end of the arc surface 166 toward the direction of the limiting member 140. The inclined surface 167 is linear. The inclined surface 167 extends toward the direction of the limiting member 140 along the radial direction of the limiting member 140. The distance between the inclined surfaces 167 is smaller than the distance between the arc surfaces 166. Thus, a loading cavity 161 with a large opening and a small inner cavity is formed.

[0107] The loading chamber 161 includes a large-size portion 162 and a small-size portion 163, and the large-size portion 162 is closer to the fixing assembly 110 than the small-size portion 163 along the axial direction of the limiting member 140. The size of the large-size portion 162 is larger than the size of the small-size portion 163. The large-size portion 162 has an open opening. The large-size portion 162 is open toward the fixing assembly 110. The limiting member 140 enters the loading chamber 161 through the open opening of the large-size portion 162. The limiting member 140 enters the small-size portion 163 through the large-size portion 162. The end of the limiting member 140 is located in the small-size portion 163.

[0108] The loading ring 164 at the static position is spaced apart from the limiting member 140. The arc surface 166 of the loading ring 164 at the static position is spaced apart from the limiting member 140. The inclined surface 167 of the loading ring 164 at the static position is spaced apart from the limiting member 140. The inner surface 165 of the loading ring 164 at the vibration position is in contact with the limiting member 140. In particular, the inclined surface 167 of the loading ring 164 at the vibration position is in contact with the limiting member 140. The limiting member 140 can roll relative to the inclined surface 167 at the vibration position. A portion of the inclined surface 167 is in contact with the limiting member 140 to avoid excessive local stress at the contact point between the limiting member 140 and the loading ring 164, thereby transmitting less vibration force and reducing the amplitude of movement of the limiting member 140.

[0109] like Figure 5 As shown, the loading assembly 160 further includes a loading plate 169, which is located between the loading ring 164 and the pier 202. The loading plate 169 is made of ordinary carbon structural steel Q235 or low alloy steel Q345. The loading ring 164 is connected to the pier 202 through the loading plate 169. The loading ring 164 and the loading plate 169 are connected together by welding. Thus, the loading ring 164 is fixed to the pier 202. The loading plate 169 closes the loading cavity 161 along the radial direction of the limiting member 140. The loading plate 169 closes the small size portion 163.

[0110] The loading assembly 160 also includes a loading cylinder 168, which is sleeved on the outer side of the loading ring 164. The loading cylinder 168 is made of ordinary carbon structural steel Q235 or low alloy steel Q345. The loading ring 164 and the loading cylinder 168 are connected together by welding. The axial direction of the loading cylinder 168 is parallel to the axial direction of the loading ring 164. The outer surface of the loading ring 164 is configured as a plane, and the inner surface of the loading cylinder 168 is configured as a plane. The outer surface of the loading ring 164 is roughly parallel to the inner surface of the loading cylinder 168. The outer surface of the loading ring 164 fits the inner surface of the loading cylinder 168. As a result, the loading ring 164 and the loading cylinder 168 can be connected together. The loading cylinder 168 plays a role in transmitting force.

[0111] In order to ensure the structural strength of the loading assembly 160, the loading assembly 160 also includes a loading rib 174, which is connected to the loading cylinder 168. The loading cylinder 168 is set to the upper surface of the loading plate 169. The loading plate 169 is made of ordinary carbon structural steel Q235 or low alloy steel Q345. The loading plate 169 and the loading cylinder 168 are fixed together by welding. Thus, a whole is formed. The loading rib 174 includes a side surface and a bottom surface, the side surface of the loading rib 174 is connected to the loading cylinder 168, and the bottom surface of the loading rib 174 is connected to the loading plate 169. The loading rib 174 can support the loading cylinder 168 to prevent the loading cylinder 168 from deforming. The loading assembly 160 includes a loading rib 174, thereby supporting the loading cylinder 168. Preferably, as Figure 6 As shown, the loading assembly 160 includes at least two loading ribs 174, and at least two loading ribs 174 are arranged at intervals along the circumferential direction of the loading cylinder 168. For example, the loading assembly 160 includes 8 loading ribs 174, and the 8 loading ribs 174 are arranged at intervals along the circumferential direction of the loading cylinder 168. In this way, the structural strength of the loading assembly 160 can be further enhanced. After the limiting member 140 is installed in place, the loading cylinder 168 and the loading ribs 174 are welded and fixed to the surface of the loading plate 169, thereby avoiding the difficulty of inaccurate installation of the beam drop device.

[0112] Return now Figure 5The loading assembly 160 also includes an anchoring member 170, which is used to connect the loading plate 169 and the pier 202. The loading ring 164 and the anchoring member 170 are respectively located on both sides of the loading plate 169. The anchoring member 170 is constructed as a steel bar. The anchoring member 170 includes an extension section 173 and a connecting section, and the connecting section is connected to the extension section 173. The longitudinal cross-sectional shape of the anchoring member 170 is roughly U-shaped. The length direction of the extension section 173 is parallel to the radial direction of the limiting member 140. The length direction of the connecting section is parallel to the axial direction of the limiting member 140. The extension section 173 and the connecting section are connected approximately vertically. The end of the connecting section is connected to the loading plate 169. The end of the connecting section is connected to the loading plate 169 by welding.

[0113] Two connecting sections (a first connecting section 171 and a second connecting section 172) are respectively located on both sides of the extension section 173. The first connecting section 171 and the second connecting section 172 are respectively connected to both sides of the extension section 173. The ends of the first connecting section 171 and the second connecting section 172 are both connected to the loading plate 169. The ends of the first connecting section 171 and the second connecting section 172 are both connected to the surface of the loading plate 169 facing the pier 202. Thus, the anchoring member 170 is constructed as a closed connection structure. The anchoring member 170 is constructed as a closed ring. A plurality of anchoring steel bars in a closed ring are welded to the bottom surface of the loading plate 169. The loading plate 169 and the anchoring member 170 are both buried in the concrete on the top of the pier 202 to meet the needs of transmitting horizontal force and bending moment. The loading plate 169 and the anchoring member 170 are both reliably anchored and connected to the pier 202.

[0114] The loading plate 169 is pre-buried inside the pier 202. The anchoring member 170 is connected to the pier 202 by pouring. Thus, the connection between the loading assembly 160 and the pier 202 is ensured to be firm. After the beam is in place, the limiting member 140 is hoisted and passed through the fixing tube 112. After the position is aligned, the loading tube 168, the loading rib 174 and the loading plate 169 are welded and fixed, and the loading ring 164 is placed in the loading tube 168, so that the lower end of the limiting member 140 is inserted into the loading ring 164.

[0115] The upper end of the limiting member 140 is inserted into the fixed tube 112 and is poured with polyurethane material to achieve embedded fixation. The lower end of the limiting member 140 is a cantilever structure, and the end of the lower end is suspended in the loading tube 168 (loading ring 164). In this way, the fixed tube 112 and the loading tube 168 do not need to be completely aligned, which reduces the difficulty of construction. The displacement size that can be provided by the tenon-shaped anti-falling beam device 100 between the limiting member 140 and the fixed tube 112 depends not only on the deformation of the limiting member 140, but the limiting member 140 can also cause the shock-absorbing material 141 to deform to play a buffering role, thereby expanding the displacement provided by the tenon-shaped anti-falling beam device 100, and then expanding the support and application range of the tenon-shaped anti-falling beam device 100, preventing the beam body 201 from falling during high-intensity earthquake shaking, and then being suitable for high-intensity earthquake environments.

[0116] Under normal use (i.e., when the bridge 200 is in operation or during normal driving), the limiting member 140 can freely and effectively release the temperature deformation and temperature force of the beam body 201 through the gap between the limiting member 140 and the fixing assembly 110, and through the gap between the limiting member 140 and the loading assembly 160. The limiting member 140 does not participate in the force and does not affect the normal use of the bridge 200.

[0117] When a high-intensity earthquake (e.g., an earthquake of magnitude 8 or above) occurs, the limiting member 140 enters a shaping and energy-consuming working state, thereby consuming earthquake energy, extending the structural cycle, and reducing earthquake force. At the same time, the limiting member 140 can also limit the displacement of the bridge 200 to prevent beam-falling accidents during earthquakes.

[0118] The tenon-shaped anti-falling beam device 100 can accurately calculate the effects of earthquake action, thereby realizing the shock absorption, seismic isolation design and control of the bridge pier 202 and the foundation.

[0119] The gap between the limiting member 140 and the fixing tube 112 is filled with an elastic-plastic polyurethane material. The tenon-shaped anti-falling beam device 100 achieves a larger gap deformation and has the effect of mitigating the impact. The tenon-shaped anti-falling beam device 100 effectively releases the temperature deformation of the beam body 201 during the operation stage of the bridge 200.

[0120] The limiting member 140 has the characteristics of elastic-plastic deformation and cyclic operation, which avoids collision and improves the ability to prevent beams from falling. When an earthquake occurs, the limiting member 140 of the tenon-shaped anti-falling beam device 100 of the present application enters a plastic energy-consuming working state, consumes earthquake energy, prolongs the structural cycle, and achieves the purpose of reducing earthquake force and preventing beams from falling.

[0121] After the limiting member 140 is placed in place, the loading cylinder 168, the loading rib 174 and the loading plate 169 are welded and fixed, so that when the eccentric distance between the fixing component 110 and the loading component 160 is large, the limiting member 140 can still be successfully installed in place.

[0122] The present application also provides a bridge 200, which includes the above-mentioned tenon-shaped anti-falling beam device 100. The bridge 200 includes a beam body 201 and a pier 202, wherein the beam body 201 is located above the pier 202. The fixing assembly 110 is connected to the beam body 201. The fixing assembly 110 is connected to the beam body 201 by casting. The loading assembly 160 is connected to the pier 202. The loading assembly 160 is connected to the pier 202 by casting.

[0123] According to the bridge 200 of the present application, the bridge 200 includes a beam body 201, a pier 202 and a tenon-shaped anti-beam-falling device 100, wherein the tenon-shaped anti-beam-falling device 100 is located between the beam body 201 and the pier 202, and the tenon-shaped anti-beam-falling device 100 includes a fixing assembly 110, a limiting member 140 and a loading assembly 160, wherein the fixing assembly 110 is used to be connected to the beam body 201, the fixing assembly 110 includes a fixing cavity 111, one end of the limiting member 140 is located in the fixing cavity 111, and a shock-absorbing material 141 is arranged between the limiting member 140 and the fixing assembly 110, the loading assembly 160 is used to be connected to the pier 202, the loading assembly 160 includes a loading cavity 161, the other end of the limiting member 140 is located in the loading cavity 161, the fixing assembly 110 is connected to the beam body 201, and the loading assembly 160 is connected to the pier 202. In this way, the pier 202 drives the loading assembly to move to contact the limiting member 140. The shock absorption and energy absorption of the tenon-shaped anti-drop beam device relies on the elastic-plastic deformation of the limiting member. It is used in high-intensity earthquake zones of 8 degrees or above. The movement of the limiting member 140 can squeeze the shock-absorbing material 141. The elastic deformation of the shock-absorbing material 141 plays an auxiliary role, thereby achieving a larger gap deformation to offset the force applied by the limiting member 140, thereby increasing the design displacement of the tenon-shaped anti-drop beam device 100. The tenon-shaped anti-drop beam device has a large displacement, realizes displacement energy consumption, expands the application range of the anti-drop beam, and avoids the beam body 201 from falling. It is simple to make and easy to install, reducing the difficulty of construction operations.

[0124] The fixing assembly 110 is located in the beam body 201. The fixing assembly 110 is embedded in the beam body 201. A portion of the limiting member 140 is located between the beam body 201 and the pier 202. The first small diameter portion 143 and the large diameter portion 142 of the limiting member 140 are located in the beam body 201. The second small diameter portion 144 of the limiting member 140 is located between the beam body 201 and the pier 202. The second small diameter portion 144 is exposed. The loading ring 164 is located outside the pier 202. The loading ring 164 is exposed to the outside of the pier 202. Thereby, the loading assembly 160 located in the vibration position can be brought into contact with the second small diameter portion 144.

[0125] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of this application. The terms used herein are only for describing specific implementation purposes and are not intended to limit this application. Terms such as "parts" and "pieces" appearing in this article may represent either a single part or a combination of multiple parts. Terms such as "installation" and "setting" appearing in this article may represent either a component being directly attached to another component or a component being attached to another component through an intermediate. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0126] The present application has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the present application to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teachings of the present application, and these variations and modifications all fall within the scope of protection claimed by the present application. The scope of protection of the present application is defined by the attached claims and their equivalents.

Claims

1. A tenon-shaped anti-falling beam device for a bridge in a high-intensity earthquake zone, wherein the bridge comprises a beam body and a pier, and the tenon-shaped anti-falling beam device is located between the beam body and the pier, and is characterized in that: The tenon-shaped anti-falling beam device comprises: A fixing assembly, the fixing assembly is used to be connected to the beam body, the fixing assembly comprises a fixing cavity; a limiting member, one end of which is located in the fixing cavity, and a shock absorbing material is arranged between the limiting member and the fixing assembly; and A loading assembly is used to be connected to the pier, and the loading assembly includes a loading cavity, and the other end of the limiting member is located in the loading cavity.

2. The tenon-shaped anti-falling beam device according to claim 1, characterized in that: The loading assembly is movable between a rest position and a vibration position, The loading assembly located in the static position is spaced apart from the limiting member, The loading assembly located at the vibration position contacts the limiting member.

3. The tenon-shaped anti-falling beam device according to claim 2, characterized in that: The loading assembly can move the limiting member from the hanging position to the swinging position. The limiting component located at the swinging position can cause the shock absorbing material to deform, and the shock absorbing material can absorb the vibration of the limiting component.

4. The tenon-shaped anti-falling beam device according to claim 3, characterized in that: The fixing assembly further includes a fixing cylinder having the fixing cavity, one end of the limiting member extends into the fixing cylinder, and the limiting member is bonded to the fixing cylinder through the shock-absorbing material.

5. The tenon-shaped anti-falling beam device according to claim 4, characterized in that: The fixing assembly further includes a pressure ring, which is located between the limiting member and the fixing cylinder. The limiting member located at the hanging position is spaced apart from the pressure ring. The limiting member located at the swinging position contacts the pressure ring.

6. The tenon-shaped anti-falling beam device according to claim 5, characterized in that: The inner surface of the pressure ring includes a protrusion, The protrusion is located in the middle of the pressure ring and protrudes toward the limiting member, and / or, The cross-section of the protrusion is an arc shape.

7. The tenon-shaped anti-falling beam device according to claim 1, characterized in that: The loading assembly also includes a loading ring, which has the loading cavity. The inner surface of the loading ring includes an arcuate surface and an inclined surface. The arcuate surface protrudes toward the limiting member, and the inclined surface extends obliquely from the inner end of the arcuate surface toward the limiting member.

8. The tenon-shaped anti-falling beam device according to claim 7, characterized in that: The load ring is movable between a rest position and a vibration position, The loading ring in the static position is spaced apart from the limiting member, The inclined surface of the loading ring located at the vibration position contacts the limiting member.

9. The tenon-shaped anti-falling beam device according to claim 1, characterized in that: The loading cavity comprises a large-size portion and a small-size portion, the large-size portion is open toward the fixing assembly, and the other end of the limiting member enters the loading cavity through the large-size portion.

10. The tenon-shaped anti-falling beam device according to claim 1, characterized in that: The limiting member includes a large diameter portion and a small diameter portion, the large diameter portion is located between the two small diameter portions, one of the small diameter portions is located in the fixing cavity, and an end of the other small diameter portion is located in the loading cavity.

11. The tenon-shaped anti-falling beam device according to claim 10, characterized in that: The fixing assembly further comprises a pressure ring, and the large diameter portion is movable between a hanging position and a swinging position. The large diameter portion located at the hanging position is spaced apart from the pressure ring, The large diameter portion located at the swing position is in contact with the pressure ring.

12. The tenon-shaped anti-falling beam device according to claim 10, characterized in that: The edge of the cross-sectional shape of the small diameter portion is configured to be linear.

13. The tenon-shaped anti-falling beam device according to claim 1, characterized in that: The loading assembly further includes a loading plate and an anchoring member, wherein the anchoring member is used to connect the loading plate and the bridge pier, and the anchoring member includes an extension section and connecting sections respectively located on both sides of the extension section, and ends of the connecting sections are connected to the loading plate.

14. The tenon-shaped beam-falling prevention device according to any one of claims 1 to 13, characterized in that: The fixing assembly and / or the loading assembly comprises at least one rib.

15. The tenon-shaped beam-falling prevention device according to any one of claims 1 to 13, characterized in that: The shock absorbing material comprises a plastic polyurethane material, and the shock absorbing material is connected to the fixing component by injection.

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