Self-resetting shear mortise and tenon support and using method thereof

Abstract

The invention discloses a self-resetting shear mortise and tenon support and a using method thereof. The shear mortise and tenon support comprises a shear mortise and tenon mechanism and a buffering mechanism. The shearing force mortise and tenon mechanism is connected with the bottom of a bridge and a pier through the upper anchor bolt assembly and the lower anchor bolt assembly. The buffering mechanism is arranged in the shearing force mortise and tenon mechanism; a plurality of friction pairs in the buffer mechanism are respectively arranged among a plurality of components which relatively slide along the bridge direction and / or the transverse direction of the bridge in the shear mortise and tenon mechanism, and a reset assembly in the buffer mechanism is connected with the plurality of components and is arranged on a transverse sliding path of the bridge; the shear mortise and tenon mechanism can effectively absorb and dissipate earthquakes, wind loads, traffic loads or other dynamic loads, the adaptability to various loads is improved, the direct impact of the loads on a bridge structure is reduced, the integrity and safety of a bridge are protected, meanwhile, the shear mortise and tenon mechanism has the self-reset function in the transverse direction of the bridge through the reset assembly, and the safety of the bridge is improved. The anti-seismic property of the bridge is further improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of bridge shock-absorbing bearings, and more specifically, relates to a self-resetting shearing force tenon bearing and a method of using the same. Background Art

[0002] Bridge vibration-damping bearings are designed to reduce the vibration of bridges under earthquakes or other dynamic loads. By absorbing seismic energy, they can significantly reduce the displacement and deformation of bridges caused by earthquakes, effectively reduce the occurrence of structural fatigue and cracks, and extend the service life of bridges. Common types of bridge vibration-damping bearings include but are not limited to lead rubber bearings, high-damping rubber bearings, sliding bearings, shear-tenon bearings, etc., so that the most suitable vibration-damping bearings can be selected according to different geological conditions and bridge types. For example, highway beam bridges often use plate rubber bearings or pot rubber bearings. These bearings are easy to maintain, but their durability is not as good as steel bearings. They need to be replaced regularly, which has a certain impact on driving. Railway bridges often use steel bearings. Since steel is easy to rust, regular maintenance is required. As long as they are properly maintained, their durability is worse than rubber bearings and they do not need to be replaced frequently.

[0003] Among them, the shear tenon support can effectively transfer horizontal loads, such as wind loads or earthquake loads, and compared with other vibration-damping supports, it also has the advantages of simple structure, low installation and maintenance costs, and strong adaptability. In the prior art, a Chinese patent with document number CN215714568U discloses a shear tenon, which relates to the field of bridge technology. The shear tenon includes a first connecting plate, a second connecting plate, a first guide rail and a limit block, the first connecting plate is used to connect to the beam body, and the second connecting plate is used to connect to the pier. The first guide rail is connected to the bottom of the first connecting plate and is slidably connected to the second connecting plate so that the first connecting plate can slide relative to the second connecting plate in a first direction, wherein the first direction is the extension direction of the first guide rail. The limit block is installed on the second connecting plate and is arranged near one end of the first guide rail to limit the range in which the first connecting plate can slide relative to the second connecting plate in the first direction. .

[0004] The shear clip of the above patent can solve the technical problem that the vibration isolation device in the prior art cannot achieve adjustable vertical stiffness, but it still cannot solve some problems existing in the existing shear clip supports, such as: (1) conventional shear clip supports have only one limiting direction, which reduces the adaptability to different loads; (2) under the action of load, the conventional shear clip supports may cause direct collision of the internal structure of the shear clip supports in the limiting direction and the non-limiting direction, which may easily lead to structural damage and increase maintenance costs. Summary of the invention

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a self-resetting shear tenon bearing and a method of using the same. By respectively arranging the multiple friction pairs in the buffer mechanism between the multiple components in the shear tenon mechanism that slide relatively along the bridge direction and / or the bridge transverse direction, and connecting the reset assembly in the buffer mechanism to the multiple components and arranging it on the sliding path in the transverse direction of the bridge, earthquakes, wind loads, traffic loads or other dynamic loads can be effectively absorbed and dissipated, the adaptability to various loads can be improved and the direct impact of these loads on the bridge structure can be reduced, thereby protecting the integrity and safety of the bridge. At the same time, the reset assembly can enable the shear tenon mechanism to have a self-resetting function in the transverse direction of the bridge, thereby further improving the seismic resistance of the bridge and extending the service life of the bridge.

[0006] In order to achieve the above-mentioned object, the present invention provides a self-resetting shear force tenon support, including: a shear force tenon mechanism and a buffer mechanism;

[0007] The shear force tenon mechanism comprises: an upper bearing plate, an intermediate plate and a lower bearing plate; the upper bearing plate is connected to the bottom of the bridge through an upper anchor assembly; the lower bearing plate is connected to the bridge pier through a lower anchor assembly; the intermediate plate is connected to the upper bearing plate in a sliding manner along the bridge direction, and is connected to the lower bearing plate in a sliding manner along the bridge transverse direction;

[0008] The buffer mechanism comprises: a first friction pair, a second friction pair, a third friction pair and a reset assembly; two groups of the first friction pairs are respectively arranged on the upper support plate and the side of the middle plate; the second friction pairs are respectively arranged on the bottom end of the middle plate and the upper end of the lower support plate; two groups of the third friction pairs are respectively arranged on the side of the middle plate and the lower support plate; two ends of the reset assembly are respectively connected to the middle plate and the lower support plate;

[0009] By respectively arranging the multiple friction pairs in the buffer mechanism between the multiple components in the shear tenon mechanism that slide relatively along the bridge direction and / or the bridge transverse direction, and connecting the reset component in the buffer mechanism with the multiple components and arranging it on the sliding path in the transverse direction of the bridge, earthquakes, wind loads, traffic loads or other dynamic loads are absorbed and dissipated. At the same time, the shear tenon mechanism has a self-reset function in the transverse direction of the bridge through the reset component.

[0010] Further, the upper support plate includes an upper support plate body and a first protrusion; the upper support plate body is a square plate and has connection holes on both sides thereof adapted to the upper anchor bolt assembly; the first protrusion is arranged at the bottom end of the upper support plate body and has an arc-shaped flange in the contact area with the upper support plate body, and at the same time, two of the first protrusions are closely and symmetrically arranged in the middle of the bottom end of the upper support plate body and form a first slide groove;

[0011] The intermediate plate comprises: an intermediate plate body, a second protrusion and a first baffle; the intermediate plate body is a square plate; the second protrusion is arranged at the middle of the upper end of the intermediate plate body and its upper part is inserted into the first slide groove; the first baffles are respectively arranged on both sides of the intermediate plate body;

[0012] The lower support plate includes: a lower support plate body, a third protrusion and a second baffle; the lower support plate body is a square plate and has connecting holes on both sides thereof that are adapted to the lower anchor bolt assembly; the two third protrusions are arranged on both sides of the upper end of the lower support plate body, and form a third slide groove between the lower support plate body; the two second baffles are arranged on both sides of the upper end of the lower support plate body.

[0013] Furthermore, a second sliding groove is provided between the second protrusion and the first baffle, and the total width of the two second sliding grooves and the second protrusion is greater than the width of the upper support plate.

[0014] Furthermore, the height of the upper surface of the second bump is lower than the height of the flange of the first bump, and the height of the lower surface of the first bump is higher than the height of the flange of the second bump.

[0015] Furthermore, the height of the upper surface of the first baffle plate is lower than the height of the upper surface of the upper support plate body, and higher than the height of the arc surface of the lower surface of the flange of the first protrusion.

[0016] Furthermore, the first friction pair includes: a first stainless steel strip and a first wear-resistant strip; the first stainless steel strip is arranged on one side of the first protrusion; the first wear-resistant strip is arranged on a side corresponding to the second protrusion;

[0017] The second friction pair includes: a second stainless steel bar and a second wear-resistant bar; the second stainless steel bar is arranged at the bottom end of the middle plate body; the second wear-resistant bar is arranged at a position corresponding to the upper end of the third slide groove;

[0018] The third friction pair includes: a third stainless steel bar and a third wear-resistant bar; the third stainless steel bar is arranged on one side of the third protrusion; and the third wear-resistant bar is arranged on the corresponding side of the middle plate body.

[0019] Furthermore, the first wear-resistant strip, the second wear-resistant strip and the third wear-resistant strip are made of polytetrafluoroethylene wear-resistant material or composite wear-resistant material.

[0020] Furthermore, the reset assembly includes: a guide shaft and a disc spring assembly; one end of the guide shaft is detachably connected to the first baffle plate by a bolt, and the other end passes through the second baffle plate and is slidably connected to the second baffle plate; the disc spring assembly is sleeved on the outer side of the guide shaft between the first baffle plate and the second baffle plate;

[0021] The reset components are in even number and are symmetrically arranged.

[0022] Furthermore, one end of the guide shaft is inserted into the first baffle and is detachably connected to the first baffle via bolts;

[0023] The length of the guide shaft is such that when the sliding limit between the middle plate and the lower support plate is reached, the guide shaft remains in sliding connection with the second baffle plate.

[0024] Another aspect of the present invention provides a method for using a self-resetting shear force tenon support, which is implemented by using the shear force tenon support as described above, and is characterized in that it includes the following steps:

[0025] S1: Cast the bridge piers, lay out the lines and reserve the installation positions of the shear force tenon bearings;

[0026] S2: adjusting the dimensions of the components of the buffer mechanism according to the vibration reduction requirements and assembling the shear force tenon support;

[0027] S3: Connect the lower bearing plate to the bridge pier through the lower anchor bolt assembly and pour concrete;

[0028] S4: connecting the upper bearing plate to the bottom of the bridge through the upper anchor bolt assembly and controlling the flatness of the upper surface of the upper bearing plate (3) and the bottom of the bridge to ensure that the shear force tenon bearing is level;

[0029] S5: Check the disc spring assembly regularly during use and remove the guide shaft by unscrewing the bolts to replace and maintain the reset assembly.

[0030] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0031] 1. The shear tenon bearing of the present invention effectively absorbs and dissipates earthquakes, wind loads, traffic loads or other dynamic loads, improves adaptability to various loads and reduces direct impacts of these loads on the bridge structure, protects the integrity and safety of the bridge, and at the same time, through the reset component, the shear tenon mechanism has a self-reset function in the transverse direction of the bridge, further improving the seismic performance of the bridge and extending the service life of the bridge.

[0032] 2. The shear tenon bearing of the present invention provides the necessary lateral and longitudinal rigidity through the mutual sliding between the upper bearing plate, the middle plate and the lower bearing plate, thereby effectively absorbing and dissipating energy under earthquakes or other impact loads. At the same time, it not only limits the displacement of the main beam, but also prevents the occurrence of beam falling, thereby ensuring the integrity and safety of the bridge.

[0033] 3. The shear tenon bearing of the present invention avoids steel-to-steel friction between the upper support plate, the middle plate and the lower support plate by arranging the first friction pair, the second friction pair and the third friction pair between the shear tenon mechanism, thereby improving the sliding stability of the shear tenon bearing; at the same time, the relative sliding of the middle plate and the lower support plate is limited by the reset component to ensure that the structure can be restored to its initial state after extreme loads, so that under multiple loads, the shear tenon bearing structure is reusable and durable, which reduces maintenance costs, thereby effectively improving the seismic performance of the bridge and extending the service life of the bridge.

[0034] 4. The shear tenon bearing of the present invention improves the performance of each friction pair, extends its service life and reduces maintenance costs by preparing the first wear-resistant strip, the second wear-resistant strip and the third wear-resistant strip with polytetrafluoroethylene wear-resistant material or a composite wear-resistant material.

[0035] 5. The shear force tenon support of the present invention adopts a detachable reset assembly, which is convenient for the later maintenance of the disc spring group, thereby increasing the service life of the shear force tenon support. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a structural schematic diagram of a shear force tenon support according to an embodiment of the present invention;

[0037] Figure 2 A top view of a shear force tenon support according to an embodiment of the present invention;

[0038] Figure 3 This is a front view of a half-section of a shear force tenon support according to an embodiment of the present invention;

[0039] Figure 4 A side half-section view of a shear force tenon support according to an embodiment of the present invention;

[0040] Figure 5 It is a structural schematic diagram of an upper support plate according to an embodiment of the present invention;

[0041] Figure 6 This is a schematic diagram of the structure of the intermediate plate in an embodiment of the present invention;

[0042] Figure 7 It is a structural schematic diagram of the lower support plate according to an embodiment of the present invention;

[0043] Figure 8 The present invention is a flowchart of the steps of a method for using a shear tenon support according to an embodiment of the present invention.

[0044] In all the drawings, the same figure marks represent the same technical features, specifically: 1-upper anchor bolt assembly, 2-lower anchor bolt assembly, 3-upper support plate, 31-upper support plate body, 32-first protrusion, 33-first slide groove, 4-middle plate, 41-middle plate body, 42-second protrusion, 43-first baffle, 44-second slide groove, 5-lower support plate, 51-lower support plate body, 52-third protrusion, 53-second baffle, 54-third slide groove, 6-first friction pair, 61-first stainless steel bar, 62-first wear-resistant strip, 7-second friction pair, 71-second stainless steel bar, 72-second wear-resistant strip, 8-third friction pair, 81-third stainless steel bar, 82-third wear-resistant strip, 9-reset assembly, 91-guide shaft, 92-disc spring group. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0046] like Figures 1 to 7 As shown, an embodiment of the present invention provides a self-resetting shear tenon bearing, including: a shear tenon mechanism and a buffer mechanism; the shear tenon mechanism is connected to the bottom of the bridge and the pier through an upper anchor assembly 1 and a lower anchor assembly 2 respectively; the buffer mechanism is arranged in the shear tenon mechanism. In actual use, by arranging the multiple friction pairs in the buffer mechanism between the multiple components in the shear tenon mechanism that slide relatively along the bridge direction and / or the bridge transverse direction, and connecting the reset assembly 9 in the buffer mechanism with the multiple components and arranging it on the sliding path in the transverse direction of the bridge, earthquakes, wind loads, traffic loads or other dynamic loads are effectively absorbed and dissipated, the adaptability to various loads is improved and the direct impact of these loads on the bridge structure is reduced, and the integrity and safety of the bridge are protected. At the same time, the reset assembly 9 enables the shear tenon mechanism to have a self-resetting function in the transverse direction of the bridge, further improving the seismic performance of the bridge and extending the service life of the bridge.

[0047] Specifically, Figures 1 to 7As shown, the shear force tenon mechanism is connected to the bottom of the bridge and the pier respectively through the upper anchor assembly 1 and the lower anchor assembly 2, and is used to reduce the vibration of the bridge under earthquake or other dynamic loads. The shear force tenon mechanism includes: an upper bearing plate 3, an intermediate plate 4 and a lower bearing plate 5; the upper bearing plate 3 is connected to the bottom of the bridge through the upper anchor assembly 1; the lower bearing plate 5 is connected to the pier through the lower anchor assembly 2; the intermediate plate 4 is connected to the upper bearing plate 3 in a sliding manner along the bridge direction, and is connected to the lower bearing plate 5 in a sliding manner along the bridge transverse direction. In actual use, the necessary transverse and longitudinal stiffness is provided by the mutual sliding between the upper bearing plate 3, the intermediate plate 4 and the lower bearing plate 5, so that the energy is effectively absorbed and dissipated under earthquake or other impact loads. At the same time, it not only limits the displacement of the main beam, but also prevents the occurrence of beam drop, thereby ensuring the integrity and safety of the bridge.

[0048] In an optional embodiment, the upper bearing plate 3 includes: an upper bearing plate body 31 and a first protrusion 32; the upper bearing plate body 31 is a square plate and has connection holes on both sides thereof adapted to the upper anchor bolt assembly 1; the first protrusion 32 is arranged at the bottom end of the upper bearing plate body 31 and has an arc flange in the contact area with the upper bearing plate body 31, and at the same time, two first protrusions 32 are symmetrically arranged in close contact at the middle of the bottom end of the upper bearing plate body 31 and form a first slide groove 33. In actual use, the upper bearing plate 3 and the upper anchor bolt assembly 1 cooperate to ensure that the upper bearing plate 3 is stably connected to the bottom end of the bridge, and improve the installation accuracy and stability with other components.

[0049] Preferably, the first sliding groove 33 is a U-shaped groove as a whole, so as to provide sufficient safety and installation flexibility.

[0050] In an optional embodiment, the middle plate 4 is in a mountain shape as a whole, and includes: a middle plate body 41, a second protrusion 42 and a first baffle 43; the middle plate body 41 is a square plate; the second protrusion 42 is arranged at the middle of the upper end of the middle plate body 41 and its upper part is inserted into the first slide groove 33; the first baffle 43 is respectively arranged on both sides of the middle plate body 41. In actual use, the upper support plate 3 and the middle plate 4 slide relative to each other along the bridge direction and the second protrusion 42 does not fall out of the first slide groove 33, which helps to reduce the longitudinal vibration or other dynamic loads of the bridge.

[0051] Preferably, arc-shaped flanges are provided at the connection points between the second protrusion 42 and the first baffle 43 and the middle plate body 41 to enhance local strength and rigidity and improve stability and safety.

[0052] Preferably, a second slide groove 44 is provided between the second protrusion 42 and the first baffle 43, and the total width of the two second slide grooves 44 and the second protrusion 42 is greater than the width of the upper support plate 3, which is used for redundant design and wear considerations, thereby improving the safety of the shear tenon support.

[0053] Preferably, the upper surface height of the second protrusion 42 is lower than the flange height of the first protrusion 32, and the lower surface height of the first protrusion 32 is higher than the flange height of the second protrusion 42, which is used to slightly increase the vertical stiffness of the shear tenon support, avoid possible collision problems, and reduce maintenance costs.

[0054] Preferably, the upper surface height of the first baffle 43 is lower than the upper surface height of the upper support plate body 31, and higher than the arc height of the lower surface of the flange of the first protrusion 32, for redundant design and wear considerations, thereby improving the safety of the shear tenon support.

[0055] In an optional embodiment, the lower bearing plate 5 includes: a lower bearing plate body 51, a third protrusion 52 and a second baffle 53; the lower bearing plate body 51 is a square plate and has connection holes on both sides thereof adapted to the lower anchor assembly 2; two third protrusions 52 are arranged on both sides of the upper end of the lower bearing plate body 51, and form a third slide groove 54 with the lower bearing plate body 51; two second baffles 53 are arranged on both sides of the upper end of the lower bearing plate body 51. In actual use, the lower bearing plate 5 and the lower anchor assembly 2 cooperate to ensure that the upper bearing plate 3 is stably connected to the bottom of the bridge, and improve the installation accuracy and stability with other components; at the same time, the intermediate plate 4 and the lower bearing plate 5 slide relative to each other along the transverse direction of the bridge, and the intermediate plate 4 does not fall out of the third slide groove 54, which helps to reduce the transverse vibration or other dynamic loads of the bridge.

[0056] Preferably, the height of the first baffle 43 is the same as the height of the second baffle 53, so as to improve the stability of the shear tenon support.

[0057] Preferably, an arc-shaped flange is provided at the connection between the second baffle plate 53 and the lower support plate body 51 to improve local strength and rigidity.

[0058] Specifically, Figures 1 to 7As shown, the buffer mechanism is arranged in the shear force tenon mechanism, and is used to further improve the stability and vibration reduction and energy dissipation effect of the shear force tenon support. The buffer mechanism includes: a first friction pair 6, a second friction pair 7, a third friction pair 8 and a reset assembly 9; two groups of the first friction pair 6 are respectively arranged on the upper support plate 3 and the side of the middle plate 4; the second friction pair 7 is respectively arranged at the bottom end of the middle plate 4 and the upper end of the lower support plate 5; two groups of the third friction pair 8 are respectively arranged on the side of the middle plate 4 and the lower support plate 5; the two ends of the reset assembly 9 are respectively connected to the middle plate 4 and the lower support plate 5. In actual use, by arranging the first friction pair 6, the second friction pair 7 and the third friction pair 8 between the shear tenon mechanism, the steel-to-steel friction between the upper support plate 3, the middle plate 4 and the lower support plate 5 is avoided, thereby improving the stability of the shear tenon mechanism; at the same time, the relative sliding of the middle plate 4 and the lower support plate 5 is limited by the reset component 9 to ensure that the structure can be restored to its initial state after extreme loads, so that under multiple loads, the shear tenon support structure is reusable and durable, which reduces maintenance costs, thereby effectively improving the seismic performance of the bridge and extending the service life of the bridge.

[0059] Preferably, the first friction pair 6 is used for sliding and wear resistance between the upper support plate 3 and the middle plate 4, and includes: a first stainless steel bar 61 and a first wear-resistant bar 62; the first stainless steel bar 61 is arranged on one side of the first protrusion 32; the first wear-resistant bar 62 is arranged on the side corresponding to the second protrusion 42.

[0060] Preferably, the second friction pair 7 is used for sliding and wear resistance between the middle plate 4 and the lower support plate 5, and includes: a second stainless steel bar 71 and a second wear-resistant bar 72; the second stainless steel bar 71 is arranged at the bottom end of the middle plate body 41; the second wear-resistant bar 72 is arranged at a position corresponding to the upper end of the third slide groove 54.

[0061] Preferably, the third friction pair 8 is used for sliding and wear resistance between the intermediate plate 4 and the lower support plate 5, and includes: a third stainless steel bar 81 and a third wear-resistant bar 82; the third stainless steel bar 81 is arranged on one side of the third protrusion 52; the third wear-resistant bar 82 is arranged on the corresponding side of the intermediate plate body 41.

[0062] Preferably, the first wear-resistant strip 62, the second wear-resistant strip 72 and the third wear-resistant strip 82 are made of polytetrafluoroethylene wear-resistant material or composite wear-resistant material to improve the performance of each friction pair, extend its service life and reduce maintenance costs.

[0063] Preferably, the reset assembly 9 includes: a guide shaft 91 and a disc spring group 92; one end of the guide shaft 91 is detachably connected to the first baffle 43 by bolts, and the other end passes through the second baffle 53 and is slidably connected to the second baffle 53; the disc spring group 92 is sleeved on the outer side of the guide shaft 91 between the first baffle 43 and the second baffle 53. In actual use, the sliding between the middle plate 4 and the lower support plate 5 is transformed into elastic sliding through multiple reset assemblies 9, and has a self-reset function, thereby effectively improving the vibration reduction effect and durability of the shear force tenon support; at the same time, the first baffle 43 and the guide shaft 91 are detachably connected by bolt connection, so that the disc spring group 92 can be easily replaced, effectively reducing the difficulty of maintenance.

[0064] Preferably, the reset components 9 are an even number and are symmetrically arranged to ensure structural stability.

[0065] Preferably, one end of the guide shaft 91 is inserted into the first baffle plate 43 and is detachably connected to the first baffle plate 43 via bolts, so as to improve the stability of the connection between the guide shaft 91 and the first baffle plate 43 .

[0066] Preferably, the length of the guide shaft 91 is such that when the sliding limit between the middle plate 4 and the lower support plate 5 is reached, the guide shaft 91 maintains a sliding connection with the second baffle plate 53, so as to improve the stability and safety of the shear tenon support.

[0067] In an optional embodiment, the guide shaft 91 is slidably connected to the second baffle plate 53 via a bearing, so as to reduce the friction resistance between the guide shaft 91 and the second baffle plate 53 and improve the structural stability.

[0068] Preferably, the guide shaft 91 is a hollow shaft tube for reducing the load and improving stability.

[0069] like Figure 8 As shown, another embodiment of the present invention provides a method for using a self-resetting shear force tenon support, comprising the following steps:

[0070] S1: Cast the bridge piers, lay out the lines and reserve the installation positions of the shear force tenon bearings;

[0071] S2: adjusting the dimensions of the components of the buffer mechanism according to the vibration reduction requirements and assembling the shear force tenon support;

[0072] S3: Connect the lower support plate 5 to the bridge pier through the lower anchor assembly 2 and pour concrete;

[0073] S4: Connect the upper bearing plate 3 to the bottom of the bridge through the upper anchor assembly 1 and control the flatness of the upper surface of the upper bearing plate 3 and the bottom of the bridge to ensure that the shear force tenon bearing is level;

[0074] S5: During use, the disc spring assembly 92 is checked regularly, and the guide shaft 91 is disassembled by unscrewing the bolts, thereby replacing the maintenance reset assembly 9.

[0075] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0076] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0077] In this patent, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "includes..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Those skilled in the art will readily understand that the above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A self-resetting shear force tenon support, characterized in that: include: Shear force latch mechanism and buffer mechanism; The shear force tenon mechanism comprises: an upper bearing plate (3), an intermediate plate (4) and a lower bearing plate (5); the upper bearing plate (3) is connected to the bottom of the bridge via an upper anchor bolt assembly (1); the lower bearing plate (5) is connected to the bridge pier via a lower anchor bolt assembly (2); the intermediate plate (4) is connected to the upper bearing plate (3) in a sliding manner along the bridge direction, and is connected to the lower bearing plate (5) in a sliding manner along the bridge transverse direction; The buffer mechanism comprises: a first friction pair (6), a second friction pair (7), a third friction pair (8) and a reset assembly (9); two groups of the first friction pair (6) are respectively arranged on the side of the upper support plate (3) and the middle plate (4); the second friction pair (7) are respectively arranged on the bottom end of the middle plate (4) and the top end of the lower support plate (5); two groups of the third friction pair (8) are respectively arranged on the side of the middle plate (4) and the lower support plate (5); two ends of the reset assembly (9) are respectively connected to the middle plate (4) and the lower support plate (5); By arranging the multiple friction pairs in the buffer mechanism between the multiple components in the shear force tenon mechanism that slide relatively along the bridge direction and / or the bridge transverse direction, and connecting the reset component (9) in the buffer mechanism with the multiple components and arranging it on the sliding path in the bridge transverse direction, earthquakes, wind loads, traffic loads or other dynamic loads are absorbed and dissipated. At the same time, the shear force tenon mechanism is provided with a self-reset function in the bridge transverse direction through the reset component (9).

2. The shear force tenon support according to claim 1, characterized in that: The upper support plate (3) comprises an upper support plate body (31) and a first protrusion (32); the upper support plate body (31) is a square plate and has connection holes on both sides thereof adapted to the upper anchor bolt assembly (1); the first protrusion (32) is arranged at the bottom end of the upper support plate body (31) and has an arc-shaped flange in the contact area with the upper support plate body (31); at the same time, two first protrusions (32) are symmetrically arranged in close contact at the middle of the bottom end of the upper support plate body (31) and form a first slide groove (33); The intermediate plate (4) comprises: an intermediate plate body (41), a second protrusion (42) and a first baffle (43); the intermediate plate body (41) is a square plate; the second protrusion (42) is arranged at the middle of the upper end of the intermediate plate body (41) and its upper part is inserted into the first slide groove (33); the first baffle (43) is respectively arranged at both sides of the intermediate plate body (41); The lower support plate (5) comprises: a lower support plate body (51), a third protrusion (52) and a second baffle (53); the lower support plate body (51) is a square plate and has connection holes on both sides thereof adapted to the lower anchor bolt assembly (2); two third protrusions (52) are arranged on both sides of the upper end of the lower support plate body (51) and form a third slide groove (54) between the third protrusions and the lower support plate body (51); and two second baffles (53) are arranged on both sides of the upper end of the lower support plate body (51).

3. The shear force tenon support according to claim 2, characterized in that: A second sliding groove (44) is provided between the second protrusion (42) and the first baffle (43), and the total width of the two second sliding grooves (44) and the second protrusion (42) is greater than the width of the upper support plate (3).

4. The shear force tenon support according to claim 2, characterized in that: The height of the upper surface of the second protrusion (42) is lower than the height of the flange of the first protrusion (32), and the height of the lower surface of the first protrusion (32) is higher than the height of the flange of the second protrusion (42).

5. The shear force tenon support according to claim 2, characterized in that: The height of the upper surface of the first baffle (43) is lower than the height of the upper surface of the upper support plate body (31), and higher than the height of the arc surface of the flanged lower surface of the first convex block (32).

6. The shear force tenon support according to any one of claims 2 to 5, characterized in that: The first friction pair (6) comprises: a first stainless steel strip (61) and a first wear-resistant strip (62); the first stainless steel strip (61) is arranged on one side of the first protrusion (32); the first wear-resistant strip (62) is arranged on a side corresponding to the second protrusion (42); The second friction pair (7) comprises: a second stainless steel strip (71) and a second wear-resistant strip (72); the second stainless steel strip (71) is arranged at the bottom end of the middle plate body (41); the second wear-resistant strip (72) is arranged at a position corresponding to the upper end of the third slide groove (54); The third friction pair (8) comprises: a third stainless steel strip (81) and a third wear-resistant strip (82); the third stainless steel strip (81) is arranged on one side of the third protrusion (52); and the third wear-resistant strip (82) is arranged on a corresponding side of the intermediate plate body (41).

7. The shear force tenon support according to claim 6, characterized in that: The first wear-resistant strip (62), the second wear-resistant strip (72) and the third wear-resistant strip (82) are made of polytetrafluoroethylene wear-resistant material or composite wear-resistant material.

8. The shear force tenon support according to any one of claims 2 to 5, characterized in that: The reset assembly (9) comprises: a guide shaft (91) and a disc spring assembly (92); one end of the guide shaft (91) is detachably connected to the first baffle (43) by means of a bolt, and the other end passes through the second baffle (53) and is slidably connected to the second baffle (53); the disc spring assembly (92) is sleeved on the outer side of the guide shaft (91) between the first baffle (43) and the second baffle (53); The reset components (9) are an even number and are symmetrically arranged.

9. The shear force tenon support according to claim 8, characterized in that: One end of the guide shaft (91) is inserted into the first baffle plate (43) and is detachably connected to the first baffle plate (43) via bolts; The length of the guide shaft (91) is such that when the sliding limit between the intermediate plate (4) and the lower support plate (5) is reached, the guide shaft (91) remains in sliding connection with the second baffle plate (53).

10. A method for using a self-resetting shear force tenon support, implemented by using the shear force tenon support as claimed in any one of claims 1 to 9, characterized in that: The steps include: S1: Cast the bridge piers, lay out the lines and reserve the installation positions of the shear force tenon bearings; S2: adjusting the dimensions of the components of the buffer mechanism according to the vibration reduction requirements and assembling the shear force tenon support; S3: Connecting the lower support plate (5) to the bridge pier through the lower anchor bolt assembly (2) and pouring concrete; S4: connecting the upper support plate (3) to the bottom of the bridge through the upper anchor bolt assembly (1) and controlling the flatness of the upper surface of the upper support plate (3) and the bottom of the bridge to ensure that the shear force tenon support is level; S5: During use, the disc spring assembly (92) is checked regularly, and the guide shaft (91) is disassembled by unscrewing the bolts, thereby replacing the maintenance reset assembly (9).

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