CN116856265A - Transverse wind resistance device for providing bridge longitudinal friction damping and damping control method - Google Patents
Transverse wind resistance device for providing bridge longitudinal friction damping and damping control method Download PDFInfo
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- CN116856265A CN116856265A CN202310895561.1A CN202310895561A CN116856265A CN 116856265 A CN116856265 A CN 116856265A CN 202310895561 A CN202310895561 A CN 202310895561A CN 116856265 A CN116856265 A CN 116856265A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/042—Mechanical bearings
- E01D19/046—Spherical bearings
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Abstract
The application discloses a transverse wind-resistant device for providing longitudinal friction damping of a bridge and a damping control method, wherein the method comprises the steps of enabling a control device to return to zero in transverse bridge displacement by adjusting the axial stroke of a hydraulic component of the transverse wind-resistant device for providing longitudinal friction damping of the bridge; the hydraulic component is regulated to apply pretightening force to the main girder and the bridge tower in the transverse bridge direction, so that the control device generates longitudinal bridge friction force when the longitudinal bridge moves; the hydraulic component is regulated to generate a jacking force suitable for the requirements of the bridge structure in the transverse bridge direction, so that the differential requirements of the bridge structure on the longitudinal bridge frictional resistance under different load working conditions are realized; the control device can limit and regulate the transverse direction of the bridge under different working conditions by adjusting the output of the hydraulic component in the transverse direction; the application can reduce the accumulated displacement of the beam end, and adaptively match the requirements of the bridge on the longitudinal frictional resistance under different working conditions.
Description
Technical Field
The application belongs to the technical field of bridge engineering, and particularly relates to a transverse wind resistance device for providing longitudinal friction damping of a bridge and a damping control method.
Background
At present, a main beam in a large-span suspension bridge often generates high-frequency low-amplitude motion under the action of vehicle load and pulsating wind load, and the motion can cause the main beam to longitudinally generate larger accumulated displacement, so that the influence on the durability of a support saddle slide plate is larger, and the service life of the support saddle is further influenced.
The friction coefficient of the conventional bridge vertical support is generally smaller (less than 0.05), the friction resistance generated by the support has a smaller effect of reducing the longitudinal displacement of the main beam, and the abrasion of the support plane sliding wear-resistant plate can be accelerated when the friction coefficient of the support is larger, so that the durability of the support is influenced; when the viscous damper is adopted to provide a longitudinal damping force for the bridge, the viscous damper is a speed-related damping device, so that the damping force generated when the main beam moves at a low speed under the action of the vehicle load and the pulsating wind load is smaller, the displacement amplitude of the main beam under the action of the vehicle load and the pulsating wind load is limited, and the accumulated displacement of the beam end cannot be effectively reduced by the conventional vertical support and the viscous damper. The accumulated displacement of the beam end is overlarge, so that abrasion of a vulnerable component (such as a plane sliding abrasion-resistant plate) of the support can be accelerated, the durability of the support component is affected, and the support is not beneficial to post-maintenance of the support.
Therefore, a damping device capable of providing larger longitudinal bridge frictional resistance and adaptively matching the requirements of the bridge on the longitudinal bridge frictional resistance under different working conditions is needed.
Disclosure of Invention
Aiming at the defects or improvement demands of the prior art, the application provides the transverse wind-resistant device for providing the longitudinal friction damping of the bridge and the damping control method, which can realize the one-key automatic zero-finding function of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge, and the transverse wind-resistant device for providing the longitudinal friction damping of the bridge has the wind-resistant support function in the transverse bridge direction, can limit the transverse displacement of the bridge under the normal working condition, and has the function of actively releasing the transverse bridge to the earthquake displacement under the earthquake working condition; the device has the advantages of larger application range, precise control, convenient use and strong stability, can effectively reduce accumulated displacement of the beam end, and can solve the problems that the support friction force and the viscous damper damping force in the prior art are limited in displacement amplitude for reducing the load of a main beam under the action of vehicle load and pulsating wind load, the accumulated displacement of the beam end cannot be effectively reduced, and the requirement on longitudinal friction force cannot be adaptively matched under different working conditions of a bridge.
In order to achieve the above object, an aspect of the present application provides a transverse wind resistance device for providing a bridge longitudinal friction damping and a damping control method, including the steps of:
s1, installing a transverse wind-resistant device for providing longitudinal friction damping of a bridge between a main beam and a bridge tower, and enabling the transverse wind-resistant device for providing longitudinal friction damping of the bridge to be respectively tightly attached to the bridge tower and the main beam by adjusting the axial stroke of a hydraulic assembly so as to enable the transverse wind-resistant device for providing longitudinal friction damping of the bridge to return to zero in the transverse bridge displacement;
s2: the hydraulic component of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is regulated to generate a lifting force in the transverse bridge direction and act on the upper support plate, so that pretightening force is applied to the main girder and the bridge tower in the transverse bridge direction, and the transverse wind-resistant device for providing the longitudinal friction damping of the bridge generates longitudinal bridge friction force when the longitudinal bridge is movably displaced;
s3: the internal pressure of a hydraulic component of the transverse wind resistance device for providing the longitudinal friction damping of the bridge is regulated, so that the hydraulic component generates a jacking force suitable for the requirements of bridge structures in the transverse bridge direction, and the differential requirements of the bridge structures on the longitudinal bridge friction resistance under different load working conditions are realized;
s4: the transverse bridge direction limiting regulation and control of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge under different working conditions is realized by regulating the output of the hydraulic component of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge in the transverse bridge direction;
the transverse wind-resistant device for providing the longitudinal friction damping of the bridge comprises an upper seat plate assembly and a lower seat plate which are arranged in parallel at intervals, and a plane sliding wear-resistant plate, a spherical crown lining plate, a rotary wear-resistant plate and a middle lining plate which are arranged between the upper seat plate assembly and the lower seat plate from top to bottom;
a plurality of hydraulic components are arranged between the middle lining plate and the lower support plate.
Further, the step S4 further comprises the step of enabling the transverse bridge to exert force by adjusting a hydraulic component of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge under the normal operation working condition of the bridge, limiting the transverse bridge displacement of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge, and reducing the displacement vibration of the bridge in the transverse bridge direction;
under the earthquake working condition, the force of the hydraulic component of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge in the transverse bridge direction is regulated and controlled to be reduced, the transverse bridge displacement of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is released, and then the internal force response of the bridge structure is reduced, so that the earthquake-resistant requirement of the bridge structure is met.
Further, the hydraulic assembly comprises a cylinder barrel, a piston rod arranged inside the cylinder barrel, an inner oil ring, an outer oil ring and an oil pipe arranged outside the cylinder barrel; the axial travel of the piston rod on the hydraulic component is adjusted, so that the pre-tightening force of the main beam and the bridge tower in the transverse direction is applied, the differential requirements of the bridge structure on the longitudinal bridge friction resistance under different load working conditions are realized, and the transverse direction limiting regulation and control of the bridge under different working conditions are realized.
Further, the upper seat plate assembly comprises an upper seat plate and a stainless steel plate arranged at the bottom of the upper seat plate;
the friction coefficient of the plane sliding wear-resisting plate is 0.1-0.18;
the stainless steel plate and the plane sliding wear-resistant plate form a sliding friction pair which can freely slide along the longitudinal bridge, so that the displacement requirement of the longitudinal bridge under the normal working condition of the bridge can be met;
the spherical crown lining plate, the rotary wear-resisting plate and the middle lining plate jointly form a rotary friction pair, so that the horizontal rotation requirement of the bridge under the normal working condition can be met.
Further, a tensile component is arranged between the spherical crown lining plate and the middle lining plate.
Further, the tensile assembly comprises a tensile block arranged on the spherical crown lining plate and a tensile bolt arranged on the tensile block;
the tensile bolt passes through the tensile block, the spherical crown lining plate, the rotary wear-resisting plate and the middle lining plate from top to bottom and is fixed with the middle lining plate.
Further, a lower support plate embedded cavity is arranged in the center of the bottom of the middle lining plate;
the top of the lower support plate is provided with a convex block matched with the embedding cavity of the lower support plate.
Further, a plurality of hydraulic component accommodating cavities are formed in the lower support plate; a plurality of hydraulic component accommodating chambers are arranged around the protruding block;
the hydraulic components are arranged in the hydraulic component accommodating cavities around the convex blocks on the lower support plate.
Further, the inner oil ring and the outer oil ring are both arranged between the piston rod and the inner wall of the cylinder barrel;
the inner oil ring is positioned between the outer bottom wall of the piston rod and the inner wall of the cylinder barrel;
and the outer oil ring is arranged between the inner wall of the top of the cylinder barrel and the piston rod.
Another aspect of the present application provides a transverse wind-resistant device and a damping control system for providing longitudinal friction damping of a bridge, for implementing the transverse wind-resistant device and the damping control method for providing longitudinal friction damping of a bridge, including:
the first control module is used for realizing the installation of a transverse wind resistance device for providing longitudinal friction damping for the bridge and the return to zero of the transverse bridge displacement;
the second control module is used for adjusting a hydraulic component of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge to enable the hydraulic component to generate a jacking force in the transverse bridge direction and act on the upper support plate, so that pretightening force is applied to the main beam and the bridge tower in the transverse bridge direction, and the transverse wind-resistant device for providing the longitudinal friction damping of the bridge generates longitudinal bridge friction force when the longitudinal bridge moves and displaces;
the third control module is used for adjusting the hydraulic component of the transverse wind resistance device for providing the longitudinal friction damping of the bridge so as to generate a jacking force suitable for the requirements of the bridge structure in the transverse bridge direction, thereby realizing the differentiated requirements of the bridge structure on the longitudinal bridge friction resistance under different load working conditions;
and the fourth control module is used for adjusting the output of the hydraulic component of the transverse wind resistance device for providing the longitudinal friction damping of the bridge in the transverse bridge direction and realizing the limiting regulation and control of the transverse bridge direction of the bridge under different working conditions.
In general, the above technical solutions conceived by the present application, compared with the prior art, enable the following beneficial effects to be obtained:
1. according to the transverse wind-resistant device for providing the longitudinal friction damping of the bridge and the damping control method, the axial stroke of the piston rod on the hydraulic component is adjusted, so that the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is respectively tightly attached to the bridge tower and the main beam, and the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is reset to zero in the transverse bridge displacement; the hydraulic component of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is adjusted to enable the hydraulic component to generate a lifting force in the transverse bridge direction and finally act on the upper support plate, so that pretightening force is applied to the main girder and the bridge tower in the transverse bridge direction, and the transverse wind-resistant device for providing the longitudinal friction damping of the bridge generates longitudinal bridge friction force when the longitudinal bridge is moved; the internal pressure of a hydraulic component of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is regulated, so that the transverse wind-resistant device for providing the longitudinal friction damping of the bridge generates a jacking force suitable for the requirements of the bridge structure in the transverse bridge direction and acts on an upper support plate, the magnitude of the frictional resistance of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge in the longitudinal bridge direction is regulated, and the differential requirements of the bridge structure on the longitudinal bridge frictional resistance under different load working conditions are realized; the transverse bridge direction limiting regulation and control of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge under different working conditions is realized by regulating the output of the hydraulic component of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge in the transverse bridge direction; the application can effectively reduce the accumulated displacement of the beam end, and can solve the problems that the prior art has smaller support friction force and viscous damper damping force, has limited displacement amplitude under the actions of vehicle load and pulsating wind load, can not effectively reduce the accumulated displacement of the beam end, and can not adaptively match the requirements of the bridge on longitudinal friction force under different working conditions.
2. According to the transverse wind-resistant device for providing the longitudinal friction damping of the bridge and the damping control method, the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is arranged between the bridge tower and the main beam or between the limiting cushion stone of the cross beam and the bracket of the main beam, so that the transverse limit can be provided for the bridge, and the horizontal friction force is provided for the longitudinal bridge; specifically, on the basis of a traditional wind-resistant support, an intelligent hydraulic jacking unit is connected in series, a friction pair of a transverse wind-resistant device for providing longitudinal friction damping of a bridge is closely attached to the side face of a main beam, and a plane sliding wear-resistant plate of the friction pair adopts an ultra-high-performance sliding plate with a high friction coefficient; a plurality of hydraulic assemblies are arranged in a transverse wind-resistant device for providing longitudinal friction damping of the bridge, the intelligent synchronous jacking function is achieved, a middle lining plate of the device is connected with a rotary lining plate in a matched mode, the rotary self-adaptive function is achieved, and the close fit of sliding pairs is guaranteed; the dynamic adjustment oil cylinder combination output pressure of the intelligent hydraulic component can meet the requirements of the bridge on longitudinal friction resistance under different working conditions.
3. The transverse wind-resistant device for providing the longitudinal friction damping of the bridge and the damping control method can realize the function of automatically finding a zero position by one key of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge, the transverse wind-resistant device for providing the longitudinal friction damping of the bridge has a wind-resistant support function in the transverse bridge direction, can limit the transverse displacement of the bridge under the normal working condition, and simultaneously has the function of actively releasing the transverse bridge to the earthquake displacement under the earthquake working condition; the device has the advantages of large application range, accurate control, convenient use and strong stability.
4. The transverse wind-resistant device for providing the longitudinal friction damping of the bridge is compact and reasonable in structure, convenient to install and maintain, and when the upper plane sliding wear-resistant plate is used as a vulnerable component and needs to be replaced after being damaged, the replacement space can be released by controlling the oil cylinder of the hydraulic component to retract axially, so that the whole replacement is convenient and fast; in addition, the hydraulic cylinders of the hydraulic assemblies are uniformly arranged on the outer surface, so that maintenance and replacement are facilitated, and the durability of the transverse wind-resistant device for providing longitudinal friction damping of the bridge can be ensured; meanwhile, the hydraulic component can be controlled by adopting variable frequency pressure maintaining, so that the device is energy-saving and environment-friendly, and the maintenance period of the product can be prolonged.
Drawings
FIG. 1 is a schematic three-dimensional view of a transverse wind-resistant unit for providing longitudinal friction damping for a bridge according to an embodiment of the present application (view I);
FIG. 2 is a schematic cross-sectional view of a cross-sectional structure of a cross-wind resistance device for providing bridge longitudinal friction damping according to an embodiment of the present application;
FIG. 3 is a schematic side view of a lateral wind-resistant device for providing bridge longitudinal friction damping according to an embodiment of the present application;
FIG. 4 is a schematic three-dimensional diagram of a transverse wind-resistant unit for providing longitudinal friction damping of a bridge according to an embodiment of the present application (view II);
FIG. 5 is a schematic flow chart of a transverse wind resistance device and a damping control method for providing longitudinal friction damping of a bridge according to an embodiment of the application;
fig. 6 is a schematic structural diagram of a transverse wind-resistant device and a damping control system for providing longitudinal friction damping of a bridge according to an embodiment of the present application.
Like reference numerals denote like technical features throughout the drawings, in particular: 100-girder, 200-bridge tower, 1-upper seat board assembly, 2-plane sliding wear-resisting plate, 3-spherical crown lining plate, 4-tensile block, 5-tensile bolt, 6-rotation wear-resisting plate, 7-middle lining plate, 8-hydraulic assembly, 81-cylinder barrel, 82-piston rod, 83-inner oil ring, 84-outer oil ring, 85-oil pipe, 9-lower support plate and 10-anchoring bolt.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. In addition, the technical features of the embodiments of the present application described below may be combined with each other as long as they do not collide with each other.
In the description of the present application, it will be understood that when an element is referred to as being "mounted," "disposed," or "disposed" on another element, it can be directly on the other element or be indirectly on the other element unless explicitly stated and limited otherwise. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element; the terms "mounted," "connected," and "provided" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
As shown in fig. 1-4, one aspect of the present application provides a transverse wind-resistant device for providing longitudinal friction damping of a bridge, which is arranged between a main beam 100 and a bridge tower 200 along a transverse bridge direction and comprises an upper seat plate assembly 1 and a lower seat plate 9 which are arranged in parallel at intervals, a planar sliding wear-resistant plate 2, a spherical crown lining plate 3, a rotary wear-resistant plate 6 and an intermediate lining plate 7 which are arranged between the upper seat plate assembly 1 and the lower seat plate 9 from top to bottom; a plurality of hydraulic assemblies 8 are arranged between the middle lining plate 7 and the lower support plate 9; the upper seat plate assembly 1 comprises an upper seat plate and a stainless steel plate arranged at the bottom of the upper seat plate; the plane sliding wear-resisting plate 2 adopts an ultra-high performance sliding plate with high friction coefficient, and the friction coefficient is 0.1-0.18; the stainless steel plate and the plane sliding wear-resistant plate 2 form a sliding friction pair which can freely slide along the longitudinal bridge direction, so that the displacement requirement of the longitudinal bridge under the normal working condition of the bridge can be met; the spherical crown lining plate 3, the rotary wear-resisting plate 6 and the middle lining plate 7 form a rotary friction pair together, so that the horizontal rotation requirement of the bridge under the normal working condition can be met; according to the application, through adjusting the axial stroke of the hydraulic component 8, the application of the pre-tightening force of the main girder and the bridge tower in the transverse bridge direction is realized, the differential requirements of the bridge structure on the longitudinal bridge direction friction resistance under different load working conditions are realized, and the transverse bridge direction limiting regulation and control of the bridge under different working conditions are realized; the application can effectively reduce the accumulated displacement of the beam end, and can solve the problems that the prior art has smaller support friction force and viscous damper damping force, has limited displacement amplitude under the actions of vehicle load and pulsating wind load, can not effectively reduce the accumulated displacement of the beam end, and can not adaptively match the requirements of the bridge on longitudinal friction force under different working conditions.
Further, as shown in fig. 1-4, a tensile component is arranged between the spherical crown liner plate 3 and the middle liner plate 7, and is used for preventing the spherical crown liner plate from falling off when the friction damping system is laterally displaced; the tensile assembly comprises a tensile block 4 arranged on the spherical crown lining plate 3 and a tensile bolt 5 arranged on the tensile block 4; the upper surface (the surface close to the upper seat plate assembly 1) of the spherical crown liner plate 3 is a plane, and the middle part of the spherical crown liner plate is provided with a tensile assembly mounting groove; the tensile bolt 5 passes through the tensile block 4, the spherical crown lining plate 3, the rotary wear-resisting plate 6 and the middle lining plate 7 from top to bottom and is fixed with the middle lining plate 7; the top of the tensile bolt 5 is spaced from the lower surface of the planar sliding wear-resistant plate 2.
Further, as shown in fig. 1-4, a lower support plate embedding cavity is arranged at the bottom center of the middle lining plate 7; the top of the lower support plate 9 is provided with a convex block matched with the embedding cavity of the lower support plate; a plurality of hydraulic component accommodating cavities are arranged on the lower support plate 9; a plurality of hydraulic component accommodating chambers are arranged around the protruding block; the hydraulic component 8 is arranged in a hydraulic component accommodating cavity around the convex block on the lower support plate 9; the top of the hydraulic component 8 (the end close to the upper support plate component) is attached to the bottom of the middle lining plate 7 (the end far away from the upper support plate component); the bottom of the lower bearing plate 9 is connected to the pylon 2 by means of anchor bolts 10.
Further, as shown in fig. 1 to 4, the hydraulic assembly 8 includes a cylinder 81, a piston rod 82 provided inside the cylinder 81, an inner oil ring 83, an outer oil ring 84, and an oil pipe 85 provided outside the cylinder 81; the inner oil ring 83 and the outer oil ring 84 are both arranged between the piston rod 82 and the inner wall of the cylinder 81; the inner oil ring 83 is located between the bottom outer wall of the piston rod 82 and the inner wall of the cylinder 81; the outer oil ring 84 is arranged between the inner wall of the top of the cylinder 81 and the piston rod 82; when in operation, one end of the piston rod 82 away from the bottom of the cylinder 81 is attached to the bottom of the middle lining plate 7; the outer bottom of the cylinder 81 is attached to the lower support plate 9; an oil pipe installation channel is arranged on the side surface of the hydraulic component accommodating cavity; the oil pipe 85 extends out of the lower support plate 9 through the oil pipe installation passage; according to the application, through adjusting the axial stroke of the piston rod on the hydraulic component, the transverse bridge displacement of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is zeroed, the transverse wind-resistant device for providing the longitudinal friction damping of the bridge applies pre-tightening force to the girder and the bridge tower in the transverse bridge direction, the bridge structure has different requirements on the longitudinal bridge friction resistance under different load working conditions, and the transverse bridge direction limiting regulation and control of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge under different working conditions are realized.
According to the working principle of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge, the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is arranged between a bridge tower and a main beam or between a beam limiting cushion stone and a main beam bracket, so that transverse limiting can be provided for the bridge, and horizontal friction force is provided for the longitudinal bridge; a plurality of hydraulic assemblies are arranged in a transverse wind-resistant device for providing longitudinal friction damping of the bridge, the intelligent synchronous jacking function is achieved, a middle lining plate of the device is connected with a rotary lining plate in a matched mode, the rotary self-adaptive function is achieved, and the close fit of sliding pairs is guaranteed; the dynamic adjustment oil cylinder combination of the intelligent hydraulic component is used for outputting pressure, so that the requirements of the bridge on longitudinal friction resistance under different working conditions are met; specifically, the axial stroke of a piston rod on the hydraulic component is adjusted, so that the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is respectively tightly attached to the bridge tower and the main beam, and the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is reset to zero in the transverse bridge displacement; the hydraulic component of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is adjusted to enable the hydraulic component to generate a lifting force in the transverse bridge direction and finally act on the upper support plate, so that pretightening force is applied to the main girder and the bridge tower in the transverse bridge direction, and the transverse wind-resistant device for providing the longitudinal friction damping of the bridge generates longitudinal bridge friction force when the longitudinal bridge is moved; the internal pressure of a hydraulic component of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is regulated, so that the transverse wind-resistant device for providing the longitudinal friction damping of the bridge generates a jacking force suitable for the requirements of the bridge structure in the transverse bridge direction and acts on an upper support plate, the magnitude of the frictional resistance of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge in the longitudinal bridge direction is regulated, and the differential requirements of the bridge structure on the longitudinal bridge frictional resistance under different load working conditions are realized; the transverse bridge direction limiting regulation and control of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge under different working conditions is realized by regulating the output of the hydraulic component of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge in the transverse bridge direction; the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is compact and reasonable in structure, convenient to install and maintain, and the upper plane sliding wear-resistant plate is used as a vulnerable component, when the bridge needs to be replaced after being damaged, the replacement space can be released by controlling the oil cylinder of the hydraulic component to retract axially, and the whole replacement is convenient and fast; in addition, the hydraulic cylinders of the hydraulic components on the transverse wind-resistant device for providing the longitudinal friction damping of the bridge are uniformly arranged on the outer surface, so that maintenance and replacement are facilitated, and the durability of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge can be ensured; meanwhile, the hydraulic component can be controlled by adopting variable frequency pressure maintaining, so that the device is energy-saving and environment-friendly, and the maintenance period of the product can be prolonged.
As shown in fig. 5, a second aspect of the present application provides a transverse wind-resistant device for providing longitudinal friction damping of a bridge and a damping control method, which are implemented by using the transverse wind-resistant device for providing longitudinal friction damping of a bridge, and include the following steps:
s1: the transverse wind-resistant device for providing the bridge longitudinal friction damping is arranged between the main beam 100 and the bridge tower 200, and the transverse wind-resistant device for providing the bridge longitudinal friction damping is respectively tightly attached to the bridge tower 200 and the main beam 100 by adjusting the axial stroke of the hydraulic component, so that the transverse displacement of the transverse wind-resistant device for providing the bridge longitudinal friction damping is reset to zero in the transverse bridge direction; specifically, the method comprises the steps of mounting a transverse wind-resistant device for providing longitudinal friction damping of a bridge and resetting transverse bridge directional displacement, assembling and mounting the transverse wind-resistant device for providing longitudinal friction damping of the bridge, connecting an upper support plate with a main beam by bolts or welding and fixing a lower support plate with a bridge tower by bolts or welding and fixing the lower support plate with the bridge tower, further mounting the transverse wind-resistant device for providing longitudinal friction damping of the bridge between the main beam and the bridge tower, and then adjusting axial stroke of a hydraulic assembly to enable the transverse wind-resistant device for providing longitudinal friction damping of the bridge to be respectively tightly attached to the bridge tower and the main beam, so that transverse bridge directional displacement of the transverse wind-resistant device for providing longitudinal friction damping of the bridge is reset to zero;
s2: the hydraulic component 8 of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is regulated to generate a lifting force in the transverse bridge direction and act on the upper support plate, so that pretightening force is applied to the main girder 100 and the bridge tower 200 in the transverse bridge direction, and the transverse wind-resistant device for providing the longitudinal friction damping of the bridge generates longitudinal bridge friction force when the longitudinal bridge is movably displaced; wherein, the vertical bridge friction resistance that the horizontal wind-resistant device that provides the vertical friction damping of bridge produced when the vertical bridge moves the displacement is represented by formula (1):
f＝μ·F 0
f is the longitudinal bridge friction force generated by the transverse wind resistance device for providing the longitudinal bridge friction damping when the longitudinal bridge moves and displaces; f (F) 0 Generating a lifting force for the hydraulic assembly in the transverse bridge direction; μ is the coefficient of friction;
s3: the hydraulic component of the transverse wind resistance device for providing the longitudinal friction damping of the bridge is regulated to generate a jacking force suitable for the requirements of the bridge structure in the transverse bridge direction, so that the differential requirements of the bridge structure on the longitudinal bridge friction resistance under different load working conditions are realized; specifically, the intelligent regulation and control of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge in the longitudinal bridge direction is realized by regulating the internal pressure of a hydraulic component of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge, so that the transverse wind-resistant device for providing the longitudinal friction damping of the bridge generates a jacking force suitable for the requirements of a bridge structure in the transverse bridge direction and acts on an upper support plate, the magnitude of the friction resistance of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge in the longitudinal bridge direction is further regulated, and the differential requirements of the bridge structure on the longitudinal bridge direction friction resistance under different load working conditions (different load working conditions comprise vehicle load, wind load, earthquake load and the like) are realized;
s4: the transverse bridge direction limiting regulation and control of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge under different working conditions is realized by regulating the output of the hydraulic component of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge in the transverse bridge direction; specifically, the step is to provide the transverse wind-resistant device of bridge longitudinal friction damping to limit and regulate the transverse bridge direction of the bridge, and the method comprises the following steps: under the normal operation working condition of the bridge, the hydraulic component of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is regulated to ensure that the transverse bridge is exerted, so that the transverse bridge displacement of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is limited, and the displacement vibration of the bridge in the transverse bridge direction is reduced; under the earthquake working condition, the force of the hydraulic component of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge in the transverse bridge direction is regulated and controlled to be reduced, the transverse bridge displacement of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is released, and then the internal force response of the bridge structure is reduced, so that the earthquake-resistant requirement of the bridge structure is met.
As shown in fig. 6, a third aspect of the present application provides a transverse wind-resistant device and a damping control system for providing longitudinal friction damping of a bridge, which are used for implementing the foregoing transverse wind-resistant device and damping control method for providing longitudinal friction damping of a bridge, and the transverse wind-resistant device and the damping control method comprise a first control module, a second control module, a third control module and a fourth control module.
The first control module is used for realizing the installation of a transverse wind resistance device for providing longitudinal friction damping for the bridge and the return to zero of the transverse bridge displacement;
the second control module is used for adjusting a hydraulic component of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge to enable the hydraulic component to generate a jacking force in the transverse bridge direction and act on the upper support plate, so that pretightening force is applied to the main beam and the bridge tower in the transverse bridge direction, and the transverse wind-resistant device for providing the longitudinal friction damping of the bridge generates longitudinal bridge friction force when the longitudinal bridge moves and displaces;
the third control module is used for adjusting the hydraulic component of the transverse wind resistance device for providing the longitudinal friction damping of the bridge so as to generate a jacking force suitable for the requirements of the bridge structure in the transverse bridge direction, thereby realizing the differentiated requirements of the bridge structure on the longitudinal bridge friction resistance under different load working conditions;
and the fourth control module is used for adjusting the output of the hydraulic component of the transverse wind resistance device for providing the longitudinal friction damping of the bridge in the transverse bridge direction and realizing the limiting regulation and control of the transverse bridge direction of the bridge under different working conditions.
It should be noted that, the lateral wind-resistant device and the damping control system for providing the longitudinal friction damping of the bridge according to the embodiments of the present application may be a computer program running in a computer device, including program code, for example, the lateral wind-resistant device and the damping control system for providing the longitudinal friction damping of the bridge are an application software; the transverse wind resistance device for providing the longitudinal friction damping of the bridge and the damping control system can be used for executing corresponding steps in the method provided by the embodiment of the application.
In some possible implementations, the transverse wind-resistant apparatus and damping control system for providing longitudinal friction damping of a bridge according to the present embodiment may be implemented by combining software and hardware, and by way of example, the transverse wind-resistant apparatus and damping control system for providing longitudinal friction damping of a bridge according to the present embodiment may be a processor in the form of a hardware decoding processor that is programmed to execute the transverse wind-resistant apparatus and damping control method for providing longitudinal friction damping of a bridge according to the present embodiment, for example, the processor in the form of a hardware decoding processor may employ one or more application specific integrated circuits (ASIC, application Specific Integrated Circuit), digital signal processor (digital signal processor, DSP), programmable logic device (PLD, programmable Logic Device), complex programmable logic device (CPLD, complex Programmable Logic Device), field programmable gate array (FPGA, field-Programmable Gate Array) or other electronic components.
In some possible implementations, the transverse wind-resistant device and the damping control system for providing the longitudinal friction damping of the bridge provided by the embodiment of the application can be implemented in a software manner, and can be software in the forms of a program, an insert and the like, and a series of modules are included to implement the transverse wind-resistant device and the damping control method for providing the longitudinal friction damping of the bridge provided by the embodiment of the application.
The application can realize the function of 'automatic zero position finding' of one key of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge, and the transverse wind-resistant device for providing the longitudinal friction damping of the bridge has the function of wind-resistant support in the transverse bridge direction, can limit the transverse displacement of the bridge under the normal working condition, and simultaneously has the function of actively releasing the transverse bridge to the earthquake displacement under the earthquake working condition; the device has the advantages of large application range, accurate control, convenient use and strong stability.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the application and is not intended to limit the application, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the application are intended to be included within the scope of the application.
Claims (10)
1. The transverse wind resistance device for providing the longitudinal friction damping of the bridge and the damping control method are characterized by comprising the following steps:
s1, installing a transverse wind-resistant device for providing longitudinal friction damping of a bridge between a main beam (100) and a bridge tower (200), and respectively tightly attaching the transverse wind-resistant device for providing longitudinal friction damping of the bridge between the bridge tower (200) and the main beam (100) by adjusting the axial stroke of a hydraulic assembly so as to zero the transverse displacement of the transverse wind-resistant device for providing longitudinal friction damping of the bridge in the transverse bridge direction;
s2: the hydraulic component (8) of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is regulated to generate a lifting force in the transverse bridge direction and act on the upper support plate, so that pretightening force is applied to the main beam (100) and the bridge tower (200) in the transverse bridge direction, and the transverse wind-resistant device for providing the longitudinal friction damping of the bridge generates longitudinal bridge friction force when the longitudinal bridge is movably displaced;
s3: the internal pressure of a hydraulic component of the transverse wind resistance device for providing the longitudinal friction damping of the bridge is regulated, so that the hydraulic component generates a jacking force suitable for the requirements of bridge structures in the transverse bridge direction, and the differential requirements of the bridge structures on the longitudinal bridge friction resistance under different load working conditions are realized;
s4: the hydraulic component (8) of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is regulated to exert force in the transverse bridge direction, so that the transverse bridge direction limiting regulation and control of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge on the bridge under different working conditions are realized;
the transverse wind resistance device for providing the longitudinal friction damping of the bridge comprises an upper seat plate assembly (1) and a lower seat plate (9) which are arranged in parallel at intervals, and a plane sliding wear-resistant plate (2), a spherical crown lining plate (3), a rotary wear-resistant plate (6) and a middle lining plate (7) which are arranged between the upper seat plate assembly (1) and the lower seat plate (9) from top to bottom;
a plurality of hydraulic components (8) are arranged between the middle lining plate (7) and the lower support plate (9).
2. The method for controlling the transverse wind resistance device and the damping for providing the longitudinal friction damping of the bridge according to claim 1, wherein the step S4 is further characterized in that under the normal operation working condition of the bridge, the transverse displacement of the transverse wind resistance device for providing the longitudinal friction damping of the bridge is limited by adjusting the hydraulic component (8) of the transverse wind resistance device for providing the longitudinal friction damping of the bridge to ensure the transverse bridge to exert force, so that the displacement vibration of the bridge in the transverse bridge direction is reduced;
under the earthquake working condition, the hydraulic component (8) of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is controlled to reduce the force exerted in the transverse bridge direction, so that the transverse bridge displacement of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge is released, and the internal force response of the bridge structure is further reduced, thereby adapting to the earthquake-resistant requirement of the bridge structure.
3. The lateral wind resistance device for providing bridge longitudinal friction damping and damping control method according to claim 2, wherein the hydraulic assembly (8) comprises a cylinder (81), a piston rod (82) arranged inside the cylinder (81), an inner oil ring (83), an outer oil ring (84) and an oil pipe (85) arranged outside the cylinder (81); the axial travel of the piston rod on the hydraulic component (8) is adjusted, so that the application of the pre-tightening force of the main beam and the bridge tower in the transverse direction is realized, the differentiated requirements of the bridge structure on the longitudinal bridge direction friction force under different load working conditions are realized, and the transverse direction limiting regulation and control of the bridge under different working conditions are realized.
4. A transverse wind resistance device and damping control method for providing bridge longitudinal friction damping according to claim 3, wherein the upper seat plate assembly (1) comprises an upper seat plate and a stainless steel plate arranged at the bottom of the upper seat plate;
the friction coefficient of the plane sliding wear-resisting plate (2) is 0.1-0.18;
the stainless steel plate and the plane sliding wear-resistant plate (2) form a sliding friction pair which can freely slide along the longitudinal bridge direction, so that the displacement requirement of the longitudinal bridge under the normal working condition of the bridge can be met;
the spherical crown lining plate (3), the rotary wear-resisting plate (6) and the middle lining plate (7) jointly form a rotary friction pair, so that the horizontal rotation requirement of the bridge under the normal working condition can be met.
5. The transverse wind-resistant unit for providing bridge longitudinal friction damping and damping control method according to claim 4, wherein a tensile member is provided between the spherical cap liner plate (3) and the intermediate liner plate (7).
6. The transverse wind resistance device for providing longitudinal friction damping of a bridge and the damping control method according to claim 5, wherein the tensile assembly comprises a tensile block (4) arranged on the spherical cap liner plate (3) and a tensile bolt (5) arranged on the tensile block (4);
the tensile bolt (5) passes through the tensile block (4), the spherical crown lining plate (3), the rotary wear-resisting plate (6) and the middle lining plate (7) from top to bottom, and is fixed with the middle lining plate (7).
7. The transverse wind resistance device for providing the longitudinal friction damping of the bridge and the damping control method according to claim 6, wherein a lower support plate embedded cavity is arranged in the bottom center of the middle lining plate (7);
the top of the lower support plate (9) is provided with a convex block matched with the embedding cavity of the lower support plate.
8. The transverse wind-resistant unit for providing bridge longitudinal friction damping and damping control method according to claim 7, wherein a plurality of hydraulic component accommodating chambers are provided on the lower bracket plate (9); a plurality of hydraulic component accommodating chambers are arranged around the protruding block;
the hydraulic component (8) is arranged in a hydraulic component accommodating cavity around the lug on the lower support plate (9).
9. The transverse wind-resistant unit for providing bridge longitudinal friction damping and damping control method according to claim 8, wherein the inner oil ring (83) and the outer oil ring (84) are both disposed between the piston rod (82) and the inner wall of the cylinder tube (81);
the inner oil ring (83) is positioned between the bottom outer wall of the piston rod (82) and the inner wall of the cylinder barrel (81);
the outer oil ring (84) is arranged between the inner wall of the top of the cylinder barrel (81) and the piston rod (82).
10. A transverse wind resistance device and a damping control system for providing bridge longitudinal friction damping, characterized in that the transverse wind resistance device and the damping control method for providing bridge longitudinal friction damping according to any one of claims 1-9 are realized, comprising:
the first control module is used for realizing the installation of a transverse wind resistance device for providing longitudinal friction damping for the bridge and the return to zero of the transverse bridge displacement;
the second control module is used for adjusting a hydraulic component of the transverse wind-resistant device for providing the longitudinal friction damping of the bridge to enable the hydraulic component to generate a jacking force in the transverse bridge direction and act on the upper support plate, so that pretightening force is applied to the main beam and the bridge tower in the transverse bridge direction, and the transverse wind-resistant device for providing the longitudinal friction damping of the bridge generates longitudinal bridge friction force when the longitudinal bridge moves and displaces;
the third control module is used for adjusting the hydraulic component of the transverse wind resistance device for providing the longitudinal friction damping of the bridge so as to generate a jacking force suitable for the requirements of the bridge structure in the transverse bridge direction, thereby realizing the differentiated requirements of the bridge structure on the longitudinal bridge friction resistance under different load working conditions;
and the fourth control module is used for adjusting the output of the hydraulic component of the transverse wind resistance device for providing the longitudinal friction damping of the bridge in the transverse bridge direction and realizing the limiting regulation and control of the transverse bridge direction of the bridge under different working conditions.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310895561.1A CN116856265A (en) | 2023-07-20 | 2023-07-20 | Transverse wind resistance device for providing bridge longitudinal friction damping and damping control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310895561.1A CN116856265A (en) | 2023-07-20 | 2023-07-20 | Transverse wind resistance device for providing bridge longitudinal friction damping and damping control method |
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| CN202310895561.1A Pending CN116856265A (en) | 2023-07-20 | 2023-07-20 | Transverse wind resistance device for providing bridge longitudinal friction damping and damping control method |
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