High-pressure-bearing maintenance-free energy dissipation steel support

Abstract

The utility model discloses a high-pressure-bearing maintenance-free energy dissipation steel support and belongs to the technical field of bridges and building supports. A sliding wear-resisting plate is fixedly connected in a groove of a spherical crown steel lining plate, and the sliding wear-resisting plate and a support top plate form a sliding friction pair used for achieving horizontal sliding. The sliding wear-resisting plate is made of a self-lubricating wear-resisting material; the rotating sliding plate is fixedly connected into the groove of the support bottom plate, and the convex spherical surface of the spherical crown steel lining plate and the rotating sliding plate form a rotating friction pair for realizing rotating fit; the rotating sliding plate is made of one or more of a self-lubricating wear-resistant material, performance polytetrafluoroethylene, modified ultra-high molecular weight polyethylene and a modified polytetrafluoroethylene material; the convex spherical surface of the spherical crown steel lining plate is made of an anti-corrosion wear-resistant material; the guide blocks are arranged in the grooves in the two sides of the support bottom plate, the guide sliding strips are arranged in the cylindrical surface grooves of the guide blocks, the guide sliding strips and the check blocks form a guide sliding width used for guiding the sliding process of the support, and the high pressure bearing performance and the good anti-corrosion effect are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge and building support technical field, especially a kind of high-pressure maintenance-free energy dissipation steel support. BACKGROUND

[0002] Steel support is the important component of bridge structure as the joint part connecting bridge superstructure and substructure, and its performance will directly affect the operation state and service life of whole bridge or whole line. The traditional steel support has the following shortcomings:

[0003] 1. The friction pendulum support utilizes the principle of simple pendulum to realize the function of shock absorption and isolation. The support dissipates part of energy through sliding interface friction, and converts part of kinetic energy into potential energy through spherical swing, to reduce the transmission of seismic energy to the superstructure, so as to achieve the purpose of shock absorption and isolation. The wear plate used at present needs to rely on silicone grease lubrication, and the friction coefficient is low under the condition of silicone grease lubrication. In order to control the seismic displacement, the radius of the spherical surface is usually designed to be small, and the beam body is greatly lifted under the condition of normal temperature displacement, the expansion joint is vertically displaced and tilted, which affects the driving comfort. In order to avoid the large lifting of the beam body under the condition of normal temperature displacement, the radius of the spherical surface is usually designed to be large, which is not conducive to the control of seismic displacement, and the support is easily shaken under the condition of strong wind. The displacement amount of the support needs to be designed to be large, and the size is large and the cost is high. The unidirectional movable support is usually provided with a baffle on both sides of the top plate of the support to be clamped on both sides of the guide mechanism of the bottom plate of the support for guiding and limiting, which can only meet the horizontal displacement and rotation angle of the beam body, and cannot meet the in-plane rotation function. At the same time, the baffle on both sides of the top plate and the guide mechanism of the bottom plate are in line contact after the rotation of the support, and the contact stress is too large, which leads to the difficulty of sliding of the support, and even the top plate of the support and the bottom plate of the support are easily stuck, the bending moment generated by the in-plane rotation of the beam body cannot be released, and the overall stress of the bridge is not conducive.

[0004] 2. The sliding pair is an important part of the support. The existing steel support wear-resistant slide plate usually adopts polytetrafluoroethylene slide plate, modified polytetrafluoroethylene slide plate and modified ultra-high molecular weight polyethylene slide plate. These slide plates need to be lubricated by silicone grease, and the bearing capacity is insufficient. The friction coefficient cannot be adjusted according to the working condition. When the silicone grease is lacking or fails, the slide plate wears rapidly, and the support or the slide plate needs to be maintained or replaced in time, which has high maintenance cost. In addition, the friction coefficient of the existing ultra-high performance polytetrafluoroethylene under low pressure changes greatly and is unstable, and the friction coefficient is uncontrollable.

[0005] 3. The bridge construction is widely distributed in various regions, and the climate conditions are complex and changeable. The complex climate conditions put forward higher requirements on the corrosion performance and stability of the bridge support. The traditional steel support protects the outer surface of the support by coating epoxy zinc-rich paint, and the normal service life is 15-25 years. Regular inspection and maintenance are needed, and during the period, large maintenance is usually carried out once, and medium and small maintenance is carried out 2-3 times, which has high maintenance cost. Utility Model Content

[0006] To address the technical problems existing in the background art, this utility model provides a high-pressure-bearing, maintenance-free, energy-consuming steel support.

[0007] This utility model adopts the following technical solution: a high-pressure-bearing, maintenance-free, energy-consuming steel support, comprising: a support top plate, a sliding wear-resistant plate, a spherical crown steel liner, a rotating sliding plate, a support bottom plate, a guide block, a guide strip, and an anchoring assembly. The end of the support top plate has a stop block that protrudes downward. The sliding wear-resistant plate is fixedly connected to the groove of the spherical crown steel liner. The sliding wear-resistant plate and the support top plate form a sliding friction pair for achieving horizontal sliding. The sliding wear-resistant plate is made of a self-lubricating wear-resistant material.

[0008] The rotating sliding plate is fixedly connected to the groove of the support base plate. The convex spherical surface of the spherical crown steel liner forms a rotating friction pair with the rotating sliding plate to achieve rotational engagement. The rotating sliding plate is made of one or more of the following materials: self-lubricating wear-resistant material, high-performance polytetrafluoroethylene, modified ultra-high molecular weight polyethylene, and modified polytetrafluoroethylene. The convex spherical surface of the spherical crown steel liner is made of corrosion-resistant and wear-resistant material.

[0009] The guide block is disposed in the grooves on both sides of the support base plate, and the guide slide is disposed in the cylindrical groove of the guide block. The guide slide and the stop block form a guide sliding amplitude to guide the sliding process of the support.

[0010] The outer surfaces of the support top plate and the support bottom plate are coated with graphene zinc powder or a combination of thermal spray metal coating and graphene zinc powder coating.

[0011] Preferably, the self-lubricating wear-resistant material comprises: polytetrafluoroethylene (PTFE), talc, titanium dioxide, copper oxide, and one or more silicon compounds, which are compounded to prepare a modified additive package; carbon fiber, aramid fiber, graphite, and ultra-high molecular weight polyethylene are added as reinforcing and modifying fillers for premixing; then it is compounded with the matrix nylon polymer resin powder, premixed in a mixer, and co-extruded by a screw extruder.

[0012] Preferably, the coefficient of friction of the self-lubricating wear-resistant material is 0.02 to 0.08.

[0013] Preferably, the corrosion-resistant and wear-resistant material is made of one or more of nickel-phosphorus alloy, chromium-plated, or stainless steel.

[0014] Preferably, both the rotating slide plate and the sliding wear-resistant plate are thin-walled spherical crown type.

[0015] Preferably, the anchoring assembly is disposed on the upper side of the top plate of the support and the lower side of the bottom plate of the support.

[0016] Preferably, the stop blocks are arranged on two or four sides of the support top plate.

[0017] The utility model discloses the beneficial effects of:

[0018] 1. The utility model discloses simple structure can horizontal rotation's guide mechanism be set, and the horizontal rotation of the beam body occurs in the process of the undirectional expansion of curved bridge body, large-span suspension bridge or cable-stayed bridge distortion, avoid the guide of steel support to appear the deadlock phenomenon, and the bending stress of beam body can be released well.

[0019] 2. The vertical rotation of guide slide strip can be realized, when the support occurs the corner, and the guide slide strip can adapt the rotation of the stop block of support top plate two sides, and the guide slide strip and the stop block of support top plate two sides form the guide sliding range and keep the surface contact state all the time, and the stop block is all in the uniform stress state, effectively avoids the stress concentration caused by line contact, and effectively improves the horizontal load capacity of steel support.

[0020] 3. Adopt novel self -lubricating wear -resisting material, have high pressure -bearing, good dry grinding performance, do not depend on silicon grease, and the friction coefficient of sliding plate can be adjusted to adapt to the requirement of steel support friction performance under different working conditions. Meanwhile, the high pressure -bearing support realizes the light weight, and the weight of the same tonnage support reduces 10-20% on average, reduces the use of steel, and the product cost is more optimal.

[0021] 4. The exposed surface adopts the dense graphite zinc powder coating corrosion protection scheme with excellent corrosion resistance, and the steel support has good corrosion protection effect in severe corrosion environment, avoiding frequent maintenance in the use process. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the structure schematic view of the utility model.

[0023] Figure 2 It is the top view of the utility model embodiment one.

[0024] Figure 3 It is the top view of the utility model embodiment two.

[0025] In the drawings, the component list represented by each sign is as follows: support top plate 1, sliding wear plate 2, spherical cap steel lining plate 3, rotating sliding plate 4, support bottom plate 5, guide block 6, guide slide strip 7, anchoring assembly 8, stop block 9. DETAILED DESCRIPTION

[0026] The utility model will be further described in connection with the following embodiments.

[0027] Embodiment one

[0028] A high-pressure bearing energy-consuming steel support, such as Figure 1 and Figure 2 As shown in the drawings, the support top plate 1 has a stop block 9 at the end and is convex downward, the sliding wear plate 2 is fixedly connected in the groove of the spherical cap steel lining plate 3, the sliding wear plate 2 and the support top plate 1 form a sliding friction pair for realizing horizontal sliding, the sliding wear plate 2 is made of self-lubricating wear-resistant material, the rotating sliding plate 4 is fixedly connected in the groove of the support bottom plate 5, the convex spherical surface of the spherical cap steel lining plate 3 and the rotating sliding plate 4 form a rotating friction pair for realizing rotating fit, the rotating sliding plate 4 is made of one or more of self-lubricating wear-resistant materials, performance polytetrafluoroethylene, modified ultrahigh molecular weight polyethylene, and modified polytetrafluoroethylene material, and the convex spherical surface of the spherical cap steel lining plate 3 is made of corrosion-resistant wear-resistant material, the guide block 6 is arranged in the groove on both sides of the support bottom plate 5, the guide sliding strip 7 is arranged in the cylindrical groove of the guide block 6, and the guide sliding strip 7 and the stop block 9 form a guide sliding amplitude for guiding the sliding process of the support, the guide block 6 can rotate in the horizontal plane of the support bottom plate 5, when the beam body is not oriented to stretch or the large-span suspension bridge or cable-stayed bridge is twisted and deformed, the support top plate 1 will drive the guide block 6 to rotate in the horizontal plane along the bottom plate, avoiding the phenomenon that the guide of the support is stuck, and the bending stress of the beam body can be well released. The guide sliding strip 7 can realize vertical rotation in the cylindrical groove of the guide block 6, when the support occurs an angle, the guide sliding strip 7 can adapt to the rotation of the stop block 9 on both sides of the support top plate 1, when the beam body occurs transverse displacement to generate horizontal force, the guide sliding strip 7 and the stop block 9 on both sides of the support top plate 1 form a guide sliding amplitude which always maintains a surface contact state, the guide block 6 and the stop block 9 on both sides of the support top plate 1 are in a uniform stress state, effectively avoiding the stress concentration caused by line contact, and effectively improving the horizontal load resistance of the support.

[0029] When the support top plate 1 is provided with the stop block 9 structure on both sides, the support is a one-way movable support, the stop block 9 on the support top plate 1 can be in the form of an integral structure or a welded combined structure or an assembled structure, when the stop block 9 on the support top plate 1 is in the form of an integral structure or a welded combined structure, the support is not provided with a shearing function; when the stop block 9 on the support top plate 1 is in the form of an assembled structure, the support can be provided with a shearing function. When the shearing function is provided, under the action of temperature deformation, small earthquakes and other small displacements, the stop block 9 on the support top plate 1 is clamped by the support bottom plate 5 through a shear pin connection to realize horizontal limiting, the one-way movable support and the two-way movable support can realize sliding deformation to meet the stress requirements of the bridge in the normal operation stage and under the action of low earthquakes; under the action of large earthquakes, the horizontal force makes the shear pin shear at the gap, the horizontal limiting shear switch is opened, the fixed support and the one-way support limiting direction occur curved friction sliding, and the seismic mitigation performance is played. By adjusting the position and shearing force of the shear switch, the friction coefficient and friction area of the sliding wear plate 2, etc. can realize different seismic mitigation and energy dissipation performance of the support, and realize the seismic grading prevention.

[0030] The outer surfaces of the support top plate 1 and the support bottom plate 5 adopt graphene zinc powder paint or a combination of thermal sprayed metal coating and graphene zinc powder paint. The outer surface of the steel support can adopt graphene zinc powder paint or thermal sprayed metal coating + graphene zinc powder paint according to different corrosion environments, the graphene zinc powder paint has excellent compactness and corrosion resistance. The adhesion of the corrosion-resistant coating product reaches more than 12 MPa, the scratch salt spray resistance is more than 3000h, the flexibility bending resistance is 1mm, the corrosion-resistant coating life is improved to 30 years, and the corrosion-resistant effect is good in severe corrosion environment, avoiding frequent maintenance in the use process.

[0031] In further embodiments, the self-lubricating wear-resistant material comprises: polytetrafluoroethylene (PTFE), talcum powder, titanium dioxide, copper oxide and silicon compound, one or more materials are compounded to prepare a modified additive package, carbon fiber, aramid fiber, graphite and ultra-high molecular weight polyethylene, one or more materials are added as reinforcing and modifying fillers for premixing, and then the base nylon polymer resin powder body is compounded, premixed by a mixer, and extruded by a screw extruder. The sliding wear-resistant plate 2 is a new type of self-lubricating wear-resistant material, and the rotating sliding plate 4 can be made of a new type of self-lubricating wear-resistant material, polytetrafluoroethylene, modified ultra-high molecular weight polyethylene or modified polytetrafluoroethylene. It has high surface tension. When subjected to external pressure or friction, relative sliding or micro-cracks occur, and stress is transferred, thereby reducing the friction loss of the material itself and protecting the wear-resistant material. The new self-lubricating wear-resistant material sliding wear-resistant plate 2 is prepared by compounding PTFE, talcum powder, titanium dioxide, copper oxide and silicon compound, one or more materials to prepare a modified additive package, then adding carbon fiber, aramid fiber, graphite and ultra-high molecular weight polyethylene, one or more materials as reinforcing and modifying fillers for premixing, then compounding with the base nylon polymer resin powder body, premixing by a mixer, and extruding by a screw extruder. The new self-lubricating wear-resistant material sliding wear-resistant plate 2 has high compressive strength and ultra-high wear resistance, and can be used for a long time under a pressure stress of 80 MPa at 120°C.

[0032] By adjusting the amount of fillers of different proportions, the self-lubricating and wear-resistant properties of the sliding wear-resistant plate 2 can be changed, thereby obtaining different friction coefficients. Under the condition of no silicon grease lubrication, the friction coefficient of the friction material is 0.02-0.08, and the dry grinding performance is good. It does not depend on silicon grease, and the sliding plate can be in a stable working state. According to different site categories and different position pier height sizes, different friction coefficients of the support can be set through seismic calculation to consume seismic energy through relative motion of the movable support during an earthquake, and each pier cooperates to reduce the stress state of the fixed support and protect the bridge pier.

[0033] The new self-lubricating wear-resistant material sliding wear-resistant plate 2 has high compressive strength and high pressure stress (long-term use under 80 MPa), and combined with grid division finite element analysis, the support structure is designed in detail, which is simple in structure and can meet the bearing and displacement deformation requirements during normal operation of the bridge. Compared with the traditional steel support which is large and heavy, the high-pressure support realizes lightweight, with an average reduction of 10-20% in weight of the same tonnage support, reducing the use of steel and the cost of the product.

[0034] In further embodiments, the convex spherical surface of the spherical steel lining plate 3 is made of a corrosion-resistant and wear-resistant material, and is formed by numerical control machining, and is treated by nickel-phosphorus alloy plating, chromium plating, or stainless steel cladding. Before the nickel-phosphorus alloy plating or chromium plating treatment, the surface pores are eliminated by rolling to improve the surface hardness, and the surface is polished to a roughness of 1.6 to improve the surface density, so as to have good corrosion resistance and wear resistance, prolong the service life of the support, and reduce the maintenance cost of the support.

[0035] In further embodiments, the rotating sliding plate 4 and the sliding wear-resistant plate 2 are both thin-walled spherical crown types. During the sliding process of the support, the sliding wear-resistant plate 2 forms a curved surface sliding friction pair with the support top plate 1. The friction coefficient performance of the self-lubricating wear-resistant material can be adjusted during the design of the support to meet the requirements of the friction performance of the support under different working conditions. By designing a larger spherical surface with a larger friction coefficient, the lifting of the beam body under normal temperature displacement is avoided, and the seismic displacement is effectively controlled, the shaking under strong wind is reduced, the displacement amount of the support is correspondingly reduced, the size is reduced, and the cost is reduced. The wear-resistant plate with high friction coefficient generates heat during the curved surface friction sliding process, converts part of the kinetic energy into heat energy to realize energy dissipation, and converts part of the kinetic energy into potential energy to provide the support with resetting ability.

[0036] In further embodiments, the support top plate 1 is connected with the bridge superstructure through the anchoring assembly 8, and the support bottom plate 5 is connected with the pier cushion structure through the anchoring assembly 8, so as to transmit the horizontal load of the bridge superstructure to the pier, and ensure the firmness and stability of the steel support during installation and use, and prevent the steel support from being displaced or tilted under dynamic load.

[0037] Embodiment Two

[0038] The utility model provides a kind of high-pressure bearing maintenance-free energy dissipation steel support, including: support top plate 1, sliding wear plate 2, spherical crown steel lining plate 3, rotating slide plate 4, support bottom plate 5, guide block 6, guide slide 7 and anchoring assembly 8, the end of the support top plate 1 has stopper 9 and is protruding downwards, the sliding wear plate 2 is fixedly connected in the recess of the spherical crown steel lining plate 3, the sliding wear plate 2 forms sliding friction pair with the support top plate 1, for realizing horizontal sliding;The sliding wear plate 2 is made of self-lubricating wear-resistant material;The rotating slide plate 4 is fixedly connected in the recess of the support bottom plate 5, the convex spherical surface of the spherical crown steel lining plate 3 forms rotating friction pair with the rotating slide plate 4, for realizing rotation fit;The rotating slide plate 4 is made of one or more of self-lubricating wear-resistant material, performance polytetrafluoroethylene, modified ultra-high molecular weight polyethylene, modified polytetrafluoroethylene material, the convex spherical surface of the spherical crown steel lining plate 3 is made of corrosion-resistant wear-resistant material;The guide block 6 is arranged in the recess of the support bottom plate 5 both sides, the guide slide 7 is arranged in the cylindrical recess of the guide block 6, the guide slide 7 forms guide sliding amplitude with the stopper 9, for guiding support sliding process;Guide block 6 can realize rotation in the horizontal plane of support bottom plate 5, when the beam body of curved bridge is not directional expansion or the beam body of large-span suspension bridge or cable-stayed bridge distortion process occurs horizontal rotation, support top plate 1 will drive guide block 6 to rotate along the bottom plate in horizontal plane, avoid the guide of support to appear jamming phenomenon, from the bending stress of beam body can be well released.Guide slide 7 can realize vertical rotation inside the cylindrical recess of guide block 6, when support occurs corner, guide slide 7 can adapt the rotation of stopper 9 both sides of support top plate 1, when beam body occurs transverse displacement and generates horizontal force, guide slide 7 and stopper 9 both sides of support top plate 1 form guide sliding amplitude and keep surface contact state all the time, guide block 6 and the both sides stopper 9 of support top plate 1 are in stress state, effectively avoid the stress concentration caused by linear contact, effectively improve the horizontal load capacity of support.

[0039] As Figure 3As shown, the support top plate 1 is provided with a block 9 structure on four sides, and the support is a fixed support. The support top plate 1 can also be provided with a circular ring block 9 structure or without a block 9 structure. When the support top plate 1 is provided with a circular ring block 9 structure, the support is a fixed support. When the support top plate 1 is not provided with a block 9 structure, the support is a bidirectional movable support. The block 9 on the support top plate 1 can be in an integral structure form, a welded combined structure form or an assembled structure form. When the block 9 on the support top plate 1 is in an integral structure form or a welded combined structure form, the support is not provided with a shearing function. When the block 9 on the support top plate 1 is in an assembled structure form, the support can be provided with a shearing function. When the shearing function is provided, under the action of temperature deformation, small earthquakes and other small displacements, the block 9 on the support top plate 1 is clamped by the support bottom plate 5 through a shear pin connection to realize horizontal limiting. The unidirectional movable support and the bidirectional movable support can realize sliding deformation to meet the stress requirements of the bridge in the normal operation stage and under the action of low earthquakes. Under the action of large earthquakes, the horizontal force makes the shear pin shear at the gap, the horizontal limiting shear switch is opened, the limiting direction of the fixed support and the unidirectional support is curved and frictionally slides, and the seismic mitigation performance is realized. By adjusting the position and shearing force of the shear switch, the friction coefficient and friction area of the sliding wear plate 2, etc. can realize different seismic mitigation and energy dissipation performance of the support, and realize seismic grading prevention.

[0040] The outer surfaces of the support top plate 1 and the support bottom plate 5 adopt graphene zinc powder paint or a combination of thermal sprayed metal coating and graphene zinc powder paint. The outer surface of the steel support can adopt graphene zinc powder paint or thermal sprayed metal coating + graphene zinc powder paint according to different corrosion environments. The graphene zinc powder paint has excellent compactness and corrosion resistance. The adhesion of the corrosion-resistant coating product reaches more than 12 MPa, the scratch salt spray resistance is more than 3000h, the flexibility bending resistance is 1mm, the corrosion-resistant coating life is increased to 30 years, and good corrosion protection effect is achieved in severe corrosion environments, avoiding frequent maintenance during use.

[0041] In further embodiments, the self-lubricating wear-resistant material comprises: polytetrafluoroethylene (PTFE), talcum powder, titanium dioxide, copper oxide and silicon compound, one or more materials are compounded to prepare a modified additive package, carbon fiber, aramid fiber, graphite and ultra-high molecular weight polyethylene, one or more materials are added as reinforcing and modifying fillers for premixing, and then the base nylon polymer resin powder body is compounded, premixed by a mixer, and extruded by a screw extruder. The sliding wear-resistant plate 2 is a new type of self-lubricating wear-resistant material, and the rotating sliding plate 4 can be made of a new type of self-lubricating wear-resistant material, polytetrafluoroethylene, modified ultra-high molecular weight polyethylene or modified polytetrafluoroethylene. It has high surface tension. When subjected to external pressure or friction, relative sliding or micro-cracks occur, and stress is transferred, thereby reducing the friction loss of the material itself and protecting the wear-resistant material. The new self-lubricating wear-resistant material sliding wear-resistant plate 2 is prepared by compounding PTFE, talcum powder, titanium dioxide, copper oxide and silicon compound, one or more materials to prepare a modified additive package, then adding carbon fiber, aramid fiber, graphite and ultra-high molecular weight polyethylene, one or more materials as reinforcing and modifying fillers for premixing, then compounding with the base nylon polymer resin powder body, premixing by a mixer, and extruding by a screw extruder. The new self-lubricating wear-resistant material sliding wear-resistant plate 2 has high compressive strength and ultra-high wear resistance, and can be used for a long time under a pressure stress of 80 MPa at 120°C.

[0042] By adjusting the amount of fillers of different proportions, the self-lubricating and wear-resistant properties of the sliding wear-resistant plate 2 can be changed, thereby obtaining different friction coefficients. Under the condition of no silicon grease lubrication, the friction coefficient of the friction material is 0.02-0.08, and the dry grinding performance is good. It does not depend on silicon grease, and the sliding plate can be in a stable working state. According to different site categories and different position pier height sizes, different friction coefficients of the support can be set through seismic calculation to consume seismic energy through relative motion of the movable support during an earthquake, so that each pier cooperates to reduce the stress state of the fixed support and protect the bridge pier.

[0043] The new self-lubricating wear-resistant material sliding wear-resistant plate 2 has high compressive strength and high pressure stress (long-term use under 80 MPa), and combined with grid division finite element analysis, the support structure is designed in detail, which is simple in structure and can meet the bearing and displacement deformation requirements during normal operation of the bridge. Compared with the traditional steel support which is large and heavy, the high-pressure support realizes lightweight, with an average reduction of 10-20% in weight of the same tonnage support, reducing the use of steel and the cost of the product.

[0044] In further embodiments, the convex spherical surface of the spherical steel lining plate 3 is made of a corrosion-resistant and wear-resistant material, and is formed by numerical control machining, and is treated by nickel-phosphorus alloy plating, chromium plating or stainless steel cladding. Before the nickel-phosphorus alloy plating or chromium plating treatment, the surface pores are eliminated by rolling to improve the surface hardness, and the surface is polished to a roughness of 1.6 to improve the surface density, so as to have good corrosion resistance and wear resistance, prolong the service life of the support, and reduce the maintenance cost of the support.

[0045] In further embodiments, the rotating sliding plate 4 and the sliding wear-resistant plate 2 are both thin-walled spherical cap type. The sliding wear-resistant plate 2 forms a curved surface sliding friction pair with the support top plate 1 during the sliding of the support. The friction coefficient performance of the self-lubricating wear-resistant material can be adjusted during the design of the support to meet the requirements of the friction performance of the support under different working conditions. A larger friction coefficient is used by designing a larger spherical surface to avoid large lifting of the beam body under normal temperature displacement state and effectively control the earthquake displacement, reduce the sway under strong wind state, and reduce the size of the support design, thereby reducing the cost. The high-friction coefficient wear-resistant plate generates heat during the curved surface friction sliding process, which converts part of the kinetic energy into heat energy to realize energy dissipation, and converts part of the kinetic energy into potential energy to provide the support with reset ability.

[0046] In further embodiments, the support top plate 1 is connected with the bridge superstructure through the anchoring assembly 8, and the support bottom plate 5 is connected with the pier cushion structure through the anchoring assembly 8, so as to transmit the horizontal load of the bridge superstructure to the pier, and ensure the firmness and stability of the steel support during installation and use, and prevent the steel support from being displaced or tilted under dynamic load.

[0047] A high-pressure-resistant maintenance-free energy-dissipating steel support is provided. It should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical details described in the foregoing embodiments or equivalently replace some of the technical features. Any equivalent replacement or modification within the core idea and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A high-pressure bearing maintenance-free energy dissipation steel support, comprising: The application relates to a support top plate, a sliding wear plate, a spherical crown steel lining plate, a rotating sliding plate, a support bottom plate, a guide block, a guide sliding strip and an anchoring assembly, the end of the support top plate is provided with a stopper and is protruded downward, and the support top plate is characterized in that, The sliding wear plate is fixedly connected in a groove of the spherical crown steel lining plate, the sliding wear plate and the support top plate form a sliding friction pair, and the sliding wear plate is made of self-lubricating wear-resistant material; The rotating sliding plate is fixedly connected in a groove of the support bottom plate, the convex spherical surface of the spherical crown steel lining plate and the rotating sliding plate form a rotating friction pair, and the guide block is arranged in grooves on the two sides of the support bottom plate, the guide sliding strip is arranged in a cylindrical groove of the guide block, the guide sliding strip and the stopper form a guide sliding range, and the guide sliding range is used for guiding the sliding process of the support.

2. The high-pressure-bearing maintenance-free energy-dissipation steel support according to claim 1, characterized in that, The self-lubricating wear-resistant material has a friction coefficient of 0.02-0.

08.

3. The high-pressure-bearing maintenance-free energy-dissipating steel support according to claim 1, characterized in that, The rotating sliding plate and the sliding wear plate are both thin-wall spherical crown types.

4. The high-pressure-bearing maintenance-free energy-dissipating steel support according to claim 1, characterized in that, The anchoring assembly is arranged on the upper side of the support top plate and the lower side of the support bottom plate.

5. The high-pressure-bearing maintenance-free energy-dissipating steel support according to claim 1, characterized in that, The stopper is arranged on the two sides or four sides of the support top plate.

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