CN108330820B - Self-resetting friction damping device for continuous beam bridge - Google Patents
Self-resetting friction damping device for continuous beam bridge Download PDFInfo
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- CN108330820B CN108330820B CN201810310899.5A CN201810310899A CN108330820B CN 108330820 B CN108330820 B CN 108330820B CN 201810310899 A CN201810310899 A CN 201810310899A CN 108330820 B CN108330820 B CN 108330820B
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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Abstract
The invention relates to a self-resetting friction damping device of a continuous beam bridge, which comprises a horizontal screw rod, a friction cylinder, a fixed plate, a resetting device, a bearing platform and a connecting bracket, wherein the horizontal screw rod, the friction cylinder, the fixed plate, the resetting device and the bearing platform are horizontally arranged; the two types of the invention are simple in structure, economical and durable, are convenient to check and maintain, utilize spiral gradient to transfer force, achieve the aim that each pier of the continuous beam bridge is stressed cooperatively under the action of an earthquake, realize the aim of consuming earthquake energy through mechanical friction, and are suitable for newly-built earthquake-proof design and earthquake-proof reinforcement of highway bridges, railway bridges, urban bridges and various large-scale continuous beam structures.
Description
Technical Field
The invention relates to a self-resetting friction damping device for a continuous beam bridge, belongs to the technical field of bridge seismic isolation and reduction, and particularly relates to a novel earthquake-proof design and existing building earthquake-proof reinforcement suitable for highway bridges, railway bridges, urban bridges and various large continuous beam structures.
Background
In order to meet the beam pier deflection requirement caused by the temperature load, a continuous beam bridge is generally provided with only one fixed pier, the fixed pier of the continuous beam bridge almost bears the action of all horizontal earthquakes, and the earthquake-resistant potential of the sliding pier is not exerted and utilized. Although the existing shock-absorbing and isolating support and passive energy-consuming device can achieve a certain shock-absorbing and energy-consuming effect through reasonable parameter setting, the shock-absorbing measures such as replacing the shock-absorbing and isolating support and adding a damper are replaced at the expense of displacement, so that the engineering quantity is large, the cost is high, and the current situation that the continuous beam bridge fixed piers independently bear the action of horizontal earthquake and the shock-absorbing potential of the sliding piers is not exerted and utilized is not changed; the horizontal sliding support has the defect that the horizontal sliding support cannot be reset after the damping function is exerted.
Disclosure of Invention
The invention aims to solve the technical problem of providing the self-resetting friction damping device of the continuous beam bridge, which has the advantages of simple structure, economy, durability and convenience in inspection and maintenance, and enables each pier of the continuous beam bridge to cooperatively bear force under the action of an earthquake.
The invention adopts the following technical scheme:
the invention relates to a self-resetting friction damping device of a continuous beam bridge, which comprises a horizontal screw rod, a friction cylinder, a fixed plate, a resetting device, a bearing platform and a connecting bracket, wherein the horizontal screw rod, the friction cylinder, the fixed plate, the resetting device, the bearing platform and the connecting bracket are horizontally arranged; the connecting bracket is fixedly arranged at the bottom of the beam body, the bearing platform is fixedly arranged at the top of the sliding pier, the resetting device is arranged in a cavity of the bearing platform, the fixing plates are respectively and fixedly arranged at the tops of two side ends of the bearing platform, the friction cylinder is embedded between the two fixing plates and can rotate around the center of the friction cylinder, and the horizontal spiral rod penetrates through the fixing plates and the friction cylinder and two ends of the horizontal spiral rod are respectively fixed at the inner sides of the connecting bracket.
The friction cylinder comprises a cylinder body and baffle plates uniformly arranged in the inner cavity of the cylinder body at intervals, wherein I-shaped holes are formed in the baffle plates; the horizontal screw rod passes through the I-shaped hole, and the screw top wall of the horizontal screw rod is in clearance fit with the inner side wall of the I-shaped hole; an integer multiple of segments of horizontal screw rods are accommodated between two adjacent baffles.
The fixing plate comprises a square plate, an outer circular hole arranged on the outer side of the square plate and an inner circular hole arranged on the inner side of the square plate, wherein the outer circular hole is communicated with the inner circular hole, and two ends of the friction cylinder are embedded between the inner circular holes of the two fixing plates and are in clearance fit with the inner circular holes; the horizontal screw rod passes through the outer round hole; the diameter of the outer circular hole is slightly larger than the outer diameter of the horizontal screw rod.
The bearing platform comprises a frustum-shaped bearing platform body, and a hollow cavity is formed in the bearing platform body.
The reset device comprises a reset spring, a baffle and a inhaul cable, wherein the baffle is fixedly arranged in the upper part of the cavity, the top of the reset spring is fixed at the bottom of the baffle, one end of the inhaul cable is fixedly arranged at the bottom of the reset spring, and the other end of the inhaul cable passes through the baffle and is fixedly arranged at the bottom of the friction cylinder.
The invention discloses a self-resetting friction damping device of a continuous beam bridge, which comprises a friction force transmission device, a bearing platform, a resetting device and connecting brackets, wherein the connecting brackets are fixedly arranged at the bottom of a beam body, the bearing platform is fixedly arranged at the top of a sliding pier, the top of the resetting device is fixedly arranged at the inner side of the lower end of the connecting brackets, two ends of the friction force transmission device are respectively and correspondingly arranged above the resetting device, and the friction force transmission device penetrates through the upper part of the bearing platform.
The friction force transmission device comprises a horizontal screw rod, circular plates fixedly arranged at two ends of the horizontal screw rod and a friction layer fixedly arranged at the outer side of the circular plates; and a gap is arranged between the outer side of the friction layer and the connecting bracket.
The bearing platform comprises a base fixedly arranged at the top of a sliding pier, and a cavity and an I-shaped hole, wherein the cavity is arranged at the top of the base and is used for enabling a horizontal screw rod section to rotate; the I-shaped holes are arranged on the corresponding outer side wall of the base and the partition plate between two adjacent cavities;
the reset device comprises a reset spring, a mounting plate fixedly arranged at the top of the reset spring and a inhaul cable; one end of the mounting plate is fixedly arranged on the inner side of the lower end of the connecting bracket, one end of the inhaul cable is connected with the bottom of the reset spring, and the other end of the inhaul cable penetrates through the mounting plate to be fixed with the bottom of the circular plate.
The circular plate is a steel plate, and the friction layer is a polytetrafluoroethylene layer.
The invention has the following positive effects:
the invention comprises a horizontal screw rod, a friction cylinder, a fixed plate, a resetting device, a bearing platform and a structure for connecting brackets, wherein the structure has the following positive effects: the two ends of the friction cylinder are embedded between the inner circular holes of the two fixing plates, and the circular holes are used for supporting and fixing the friction cylinder; the diameter of the inner circular hole is matched with the outer diameter of the friction cylinder, so that the friction cylinder can freely rotate around the center of the friction cylinder while the transverse displacement and the vertical displacement of the friction cylinder are fully limited; the clearance fit between the inside wall between horizontal screw pole spiral roof and the I shape hole, it satisfies the biggest demand that shifts of roof beam mound under the normal operating condition of continuous beam bridge, horizontal screw pole and I shape pore wall frictional contact during the earthquake, dissipation seismic energy, make sliding mound and fixed mound anti-seismic in coordination, improve the shock resistance of continuous beam bridge, hold the integer multiple of horizontal screw pole sections between two adjacent baffles, the slope of every section spiral of horizontal screw pole has decided the size of the required power of its thrust friction section of thick bamboo rotation after contact with I shape hole, diameter through adjusting friction section of thick bamboo and the mass of distribution at the section of thick bamboo wall, can change friction section of thick bamboo and take place the required thrust of rotation, through adjusting the quantity of baffle, but the ability of adjusting device friction power consumption under certain mound roof beam relative displacement. In practical engineering application, the spiral gradient of each section of the horizontal spiral rod is changed through the torsion angle of each section of the horizontal spiral rod, so that the adjustment of the force transmission between the back beam body and the sliding pier is realized. The diameter of the outer circular hole is slightly larger than the outer diameter of the horizontal spiral rod, a certain pretightening force is applied to the reset spring through the inhaul cable, the friction cylinder can be prevented from rotating when an earthquake happens, the I-shaped hole is always in close contact with the horizontal spiral rod, the purpose of good friction energy consumption is achieved, and meanwhile, the self-reset function of the device can be achieved by the aid of the reset spring under the action of the reset force after the earthquake.
The working principle of the invention is as follows: under normal operation state, under reset spring's pulling, the friction tube is in steady state, exists certain clearance between horizontal screw rod and the I shape hole, and horizontal screw rod and I shape hole contactless, but horizontal screw rod free horizontal movement, then satisfies the relative demand that shifts of beam mound under the normal operation state.
When an earthquake bursts, the relative displacement of the sliding pier and the beam body is increased, and when the relative displacement is larger than the reserved gap between the horizontal screw rod and the I-shaped hole, the horizontal screw rod is in friction contact with the wall of the I-shaped hole, so that friction energy consumption is realized, the relative movement of the beam body and the sliding pier is limited, the horizontal earthquake load of the beam body is transferred to the sliding pier, and the aim of cooperatively resisting the earthquake action of each pier of the continuous beam bridge is realized. After the earthquake, the reset spring is in a continuous compression state, and the traction cable drives the friction cylinder to rotate to assist the sliding pier to realize device reset.
The invention comprises a friction force transmission device, a bearing platform, a resetting device and a structure for connecting brackets, and has the following positive effects: the horizontal screw rod is a screw rod formed by twisting steel plates with a certain thickness, and the gradient of each section of screw of the horizontal screw rod determines the force required by the screw rod to drive the circular plate to rotate after the screw rod contacts with the I-shaped hole, the friction coefficient and the friction area between the friction layer and the corresponding bracket determine the energy consumption capacity of the device, the friction force influences the rotation capacity between the horizontal screw rod and the I-shaped hole, the force transmission capacity between the beam body and the sliding pier is further influenced, and the torsion angle of each section of the horizontal screw rod is assisted to be changed by adjusting the friction coefficient and the friction area, so that the force transmission capacity between the beam piers is adjusted. The cable exerts certain pretightning force for reset spring, can hinder the circular plate to rotate, and then increases the power transmission ability between the roof beam mound, simultaneously, owing to reset spring's restoring force effect after the shake, can assist the slip mound to realize that the device is from resetting.
The working principle of the invention is as follows: under normal state, the reserved gap between the circular plate and the bracket is larger than the maximum value of the relative displacement generated by the beam pier under the action of temperature load and vehicle braking load.
When an earthquake bursts, the relative displacement between the beam body and the pier top of the sliding pier is increased, the circular plate is contacted with the bracket, the horizontal screw rod is pushed to move relatively with the I-shaped hole, the horizontal screw rod drives the circular plate to rotate, so that the circular plate and the bracket generate rotation friction, earthquake energy is consumed, the relative movement of the beam body and the sliding pier is limited, the horizontal earthquake load of the upper structure is transmitted to the sliding pier, and the aim of cooperatively resisting the earthquake effect of each pier of the continuous beam bridge is fulfilled. After the earthquake, the reset spring is in a continuous compression state, the circular plate is driven to rotate through the inhaul cable, and the device reset is realized by the auxiliary sliding pier. The damage of the support and the expansion joint caused by overlarge relative displacement of the beam pier and even the occurrence of serious continuous beam bridge shock hazard such as beam collapse and the like are effectively avoided.
The two continuous beam bridges are simple in structure, economical and durable, convenient to check and maintain, and achieve the purpose that each pier of the continuous beam bridge is stressed cooperatively under the action of an earthquake by utilizing spiral gradient force transmission, and meanwhile, the purpose of consuming earthquake energy is achieved through mechanical friction. The novel earthquake-resistant structure is suitable for newly-built earthquake-resistant design and existing building earthquake-resistant reinforcement of highway bridges, railway bridges, urban bridges and various large-scale continuous beam structures, achieves the aim of cooperative stress of the structures through a damping device which is simple in principle, economical and reliable in case of earthquake burst, and improves the overall earthquake-resistant performance of the structures.
Drawings
FIG. 1 is a schematic diagram of a structure of an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a friction cylinder according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an I-shaped hole structure according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a main sectional structure of a right side fixing plate according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a resetting device according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a main cross-sectional structure of a platform according to an embodiment of the present invention;
FIG. 7 is a schematic top view of a platform according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a second embodiment;
FIG. 9 is a schematic diagram of a friction force transmission device according to a second embodiment of the present invention;
FIG. 10 is a schematic diagram of a cross-sectional structure of a second platform according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of a second I-shaped hole structure according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a resetting device according to a second embodiment of the present invention.
Detailed Description
Embodiment one:
as shown in fig. 1-7, the invention comprises a horizontal screw rod 1, a friction cylinder 2, a fixed plate 3, a resetting device 4, a bearing platform 5 and a connecting bracket 6 which are horizontally arranged; the number of the resetting device 4 is more than one; the connecting bracket 6 is fixedly arranged at the bottom of the beam body 7, the bearing platform 5 is fixedly arranged at the top of the sliding pier 8, the resetting device 4 is arranged in a cavity of the bearing platform 5, the fixing plates 3 are respectively and fixedly arranged at the tops of two side ends of the bearing platform 5, the friction cylinder 2 is embedded between the two fixing plates 3 and can freely rotate around the center of the friction cylinder 2, and the horizontal spiral rod 1 passes through the fixing plates 3 and the friction cylinder 2, and the two ends of the horizontal spiral rod are respectively fixed at the inner sides of the connecting bracket 6; the horizontal screw rod 1 is made of a steel plate with a certain thickness by screwing.
The friction cylinder 2 comprises a cylinder 201 and partition plates 202 which are uniformly arranged in the inner cavity of the cylinder 201 at intervals, wherein a space 204 is reserved between every two partition plates 202; an I-shaped hole 203 is provided in the partition 202; the horizontal screw rod 1 passes through the I-shaped hole 203, and clearance fit is formed between the spiral top wall of the horizontal screw rod 1 and the inner side wall of the I-shaped hole 203, so that the maximum displacement requirement of the beam pier in the normal operation state of the continuous beam bridge is met. An integer multiple of segments of the horizontal screw rod 1 are accommodated between two adjacent baffles 202, i.e. in the space 204. The gradient of each section of spiral of the horizontal spiral rod 1 determines the force required by pushing the friction cylinder 2 to rotate after the horizontal spiral rod 1 contacts with the I-shaped hole 203, and in practical engineering application, the spiral gradient of the horizontal spiral rod 1 is changed through the torsion angle of each section of the horizontal spiral rod, so that the adjustment of the force transmission between the back beam body and the sliding pier is realized.
The fixing plates 3 comprise square plates 301, outer circular holes 302 arranged on the outer sides of the square plates 301 and inner circular holes 303 arranged on the inner sides of the square plates 301, the square plates 301 are steel plates, the outer circular holes 302 are communicated with the inner circular holes 303, two ends of the friction cylinder 2 are embedded in the inner circular holes 303 of the two fixing plates 3, and the inner circular holes 303 are used for supporting and fixing the friction cylinder 2; the horizontal screw rod 1 passes through the outer round hole 302, the diameter of the outer round hole 302 is slightly larger than the outer diameter of the horizontal screw rod 1, the diameter of the inner round hole 303 is matched with the outer diameter of the friction cylinder 2, and the friction cylinder 2 can freely rotate around the center thereof while the transverse displacement and the vertical displacement of the friction cylinder 2 are fully limited.
The bearing platform 5 comprises a frustum-shaped bearing platform body 501, and a hollow cavity 502 is arranged in the bearing platform body 501; the reset device 4 comprises a reset spring 401, a baffle plate 402 and a pull rope 403, wherein the baffle plate 402 is fixedly arranged in the upper part of a cavity 502, the top of the reset spring 401 is fixed at the bottom of the baffle plate 402, one end of the pull rope 403 is fixedly arranged at the bottom of the reset spring 401, and the other end of the pull rope 403 penetrates through the baffle plate 402 and is fixedly arranged at the bottom of the friction cylinder 2. The reset spring 401 is applied with a certain pretightening force through the inhaul cable 403, when an earthquake happens, the friction cylinder 2 can be prevented from rotating, the I-shaped hole 203 and the horizontal screw rod 1 are in close contact all the time, so that the aim of good friction energy consumption is achieved, and meanwhile, the self-reset function of the device can be realized by the aid of the reset spring 401 under the action of the reset force after the earthquake.
Under the traction of the return spring 401, the friction cylinder 2 is in a stable state in a normal operation state, a certain gap exists between the horizontal screw rod 1 and the I-shaped hole 203, the horizontal screw rod 1 is not contacted with the I-shaped hole 203, the horizontal screw rod 1 can freely and horizontally move, and then the relative displacement requirement of a beam pier in the normal operation state is met.
When an earthquake bursts, the relative displacement of the sliding piers 8 and the beam body 7 is increased, when the relative displacement is larger than the reserved gap between the horizontal screw rod 1 and the I-shaped hole 203, the horizontal screw rod 1 is in friction contact with the wall of the I-shaped hole 203, so that friction energy consumption is realized, the relative movement of the beam body 7 and the sliding piers 8 is limited, the horizontal earthquake load of the beam body 7 is transferred to the sliding piers 8, and the aim of cooperatively resisting the earthquake action of each pier of the continuous beam bridge is realized.
After the earthquake, the reset spring 401 is in a continuous compression state, the friction cylinder 2 is driven to rotate through the inhaul cable 403, and the auxiliary sliding pier 8 realizes device reset. The normal operation of the bridge after earthquake is not affected, and the device plays a role in damping again.
On the premise of small relative displacement of the beam pier, the invention can realize force transmission and energy consumption through the horizontal screw rod, and effectively avoid the occurrence of serious continuous beam bridge shock injury such as support and expansion joint damage, even beam collapse and the like caused by overlarge relative displacement of the beam pier.
Embodiment two:
as shown in fig. 8-12, the invention comprises a friction force transmission device, a bearing platform 5, a resetting device 4 and a connecting bracket 6, wherein the connecting bracket 6 is fixedly arranged at the bottom of a beam body 7, the bearing platform 5 is fixedly arranged at the top of a sliding pier 8, the top of the resetting device 4 is fixedly arranged at the inner side of the lower end of the connecting bracket 6, two ends of the friction force transmission device are respectively and correspondingly arranged above the resetting device 4, and the friction force transmission device passes through the upper part of the bearing platform 5.
The friction force transmission device comprises a horizontal screw rod 1, circular plates 102 fixedly arranged at two ends of the horizontal screw rod 1 and a friction layer 103 fixedly arranged at the outer side of the circular plates 102, wherein the circular plates 102 are steel plates, and the friction layer 103 is a polytetrafluoroethylene layer.
The clearance between the outer side of the friction layer 103 and the connecting bracket 6 is larger than the maximum value of the relative displacement generated by the beam pier under the action of temperature load and vehicle braking load.
The bearing platform 5 comprises a base 503 fixedly arranged at the top of a sliding pier 8, a cavity 504 and an I-shaped hole 505, wherein the cavity 504 is arranged at the top of the base 503 and is required for enabling the horizontal screw rod 1 to rotate in a segment manner; the I-shaped holes 505 are arranged on the corresponding outer side wall of the base 503 and the partition plate between two adjacent cavities 504; the horizontal screw rod 1 is a screw rod formed by twisting steel plates with a certain thickness, and the gradient of each section of screw of the horizontal screw rod 1 determines the force required by the screw rod to drive the circular plate 102 to rotate after the screw rod contacts with the I-shaped hole 505, so that the screw gradient of each section of screw rod 1 is changed through the torsion angle of each section of the screw rod 1 in practical engineering application, and the adjustment of the force transmission between the back beam body and the sliding pier is realized. The friction coefficient and the friction area of the friction layer 103 between the circular plate 102 and the corresponding connecting bracket 6 determine the energy consumption capacity of the device, meanwhile, due to the existence of friction force, the rotation capacity between the horizontal screw rod 1 and the I-shaped hole 505 is affected, the force transmission between the beam body 7 and the sliding pier 8 is further affected, and the force transmission between the beam piers is adjusted by adjusting the friction coefficient and the friction area, assisting the change of the torsion angle of each section of the horizontal screw rod 1.
The resetting device 4 comprises a resetting spring 401, a mounting plate 404 fixedly arranged on the top of the resetting spring 401 and a guy cable 403; one end of the mounting plate 404 is fixedly mounted on the inner side of the lower end of the connecting bracket 6, one end of the stay cable 403 is connected with the bottom of the return spring 401, and the other end of the stay cable 403 penetrates through the mounting plate 404 to be fixed with the bottom of the circular plate 102.
Under normal conditions, the reserved gap between the circular plate 505 and the connecting bracket 6 is larger than the maximum value of the relative displacement generated by the beam pier under the action of temperature load and vehicle braking load.
During an earthquake burst, the pier top relative displacement of the beam body 7 and the sliding pier 8 is increased, the circular plate 102 is contacted with the connecting bracket 6 leg, the horizontal screw rod 1 and the I-shaped hole 505 are pushed to perform relative movement, the horizontal screw rod 1 drives the circular plate 102 to rotate, the friction layer 103 and the connecting bracket 6 generate rotation friction, earthquake energy is consumed, the relative movement of the beam body 7 and the sliding pier 8 is limited, horizontal earthquake load of an upper structure is transmitted to the sliding pier 8, and the aim of cooperatively resisting the earthquake action of each pier of the continuous beam bridge is achieved.
After the earthquake, the reset spring 401 is in a continuous compression state, the stay cable 403 drives the circular plate 102 to rotate, and the auxiliary sliding pier 6 realizes device reset. The damage of the support and the expansion joint caused by overlarge relative displacement of the beam pier and even the occurrence of serious continuous beam bridge shock hazard such as beam collapse and the like are effectively avoided.
The self-resetting friction damping device for the continuous beam bridge is simple in structure, economical and durable, convenient to check and maintain and capable of achieving the purpose of consuming seismic energy through mechanical friction. The method is suitable for newly-built earthquake-proof design of highway bridges, railway bridges, urban bridges and various large-scale continuous beam structures and earthquake-proof reinforcement of existing buildings.
Finally, it should be understood that the foregoing description is merely illustrative of the preferred embodiments of the present invention, and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents or improvements may be made within the spirit and principles of the invention.
Claims (3)
1. The self-resetting friction damping device for the continuous beam bridge is characterized by comprising a horizontal screw rod (1), a friction cylinder (2), a fixed plate (3), a resetting device (4), a bearing platform (5) and a connecting bracket (6) which are horizontally arranged; the connecting bracket (6) is fixedly arranged at the bottom of the beam body (7), the bearing platform (5) is fixedly arranged at the top of the sliding pier (8), the resetting device (4) is arranged in a cavity of the bearing platform (5), the fixing plates (3) are respectively and fixedly arranged at the tops of two side ends of the bearing platform (5), the friction cylinder (2) is embedded between the two fixing plates (3) and can rotate around the central axis of the friction cylinder, and the horizontal spiral rod (1) passes through the fixing plates (3) and the friction cylinder (2) and the two ends of the horizontal spiral rod are respectively fixed at the inner sides of the connecting bracket (6);
the friction cylinder (2) comprises a cylinder body (201) and partition plates (202) which are uniformly arranged in the inner cavity of the cylinder body (201) at intervals, and a space (204) is arranged between every two adjacent partition plates (202); an I-shaped hole (203) is arranged on the partition plate (202); the horizontal screw rod (1) passes through the I-shaped hole (203), and the screw top wall of the horizontal screw rod (1) is in clearance fit with the inner side wall of the I-shaped hole (203); an integral multiple of segments of the horizontal screw rod (1) are accommodated between two adjacent partition plates (202);
the reset device (4) comprises a reset spring (401), a baffle (402) and a pull rope (403), wherein the baffle (402) is fixedly arranged on the upper portion in the cavity (502), the top of the reset spring (401) is fixed on the bottom of the baffle (402), one end of the pull rope (403) is fixedly arranged at the bottom of the reset spring (401), and the other end of the pull rope (403) penetrates through the baffle (402) and is fixedly arranged at the bottom of the friction cylinder (2).
2. The self-resetting friction damping device of the continuous beam bridge according to claim 1, characterized in that the fixing plates (3) comprise square plates (301), outer circular holes (302) arranged on the outer sides of the square plates (301) and inner circular holes (303) arranged on the inner sides of the square plates (301), the outer circular holes (302) are communicated with the inner circular holes (303), and two ends of the friction cylinder (2) are embedded in the inner circular holes (303) of the two fixing plates (3) and are in clearance fit with the inner circular holes (303); the horizontal screw rod (1) passes through the outer round hole (302); the diameter of the outer round hole (302) is slightly larger than the outer diameter of the horizontal screw rod (1).
3. A continuous beam bridge self-resetting friction cushioning device as set forth in claim 1, characterized in that the bearing platform (5) comprises a conical bearing platform body (501), and a cavity (502) is provided in the bearing platform body (501).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810310899.5A CN108330820B (en) | 2018-04-09 | 2018-04-09 | Self-resetting friction damping device for continuous beam bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810310899.5A CN108330820B (en) | 2018-04-09 | 2018-04-09 | Self-resetting friction damping device for continuous beam bridge |
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| CN108330820A CN108330820A (en) | 2018-07-27 |
| CN108330820B true CN108330820B (en) | 2024-03-29 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002038418A (en) * | 2000-05-16 | 2002-02-06 | Kawaguchi Metal Industries Co Ltd | Function separation type bridge support device |
| KR20070016367A (en) * | 2005-08-03 | 2007-02-08 | (주)원에스티 | Leveling device |
| CN103266556A (en) * | 2013-05-23 | 2013-08-28 | 中南大学 | Shock insulation rubber support |
| CN105586827A (en) * | 2016-01-29 | 2016-05-18 | 石家庄铁道大学 | Continuous beam bridge vibration reduction device with inertia force activating function |
| JP2016118008A (en) * | 2014-12-19 | 2016-06-30 | 西日本高速道路株式会社 | Structural vibration control device, method for removing residual displacement of superstructure using the same and bridge reinforcement method |
| CN105735115A (en) * | 2016-03-01 | 2016-07-06 | 石家庄铁道大学 | Connecting shock absorption device for continuous girder bridge zone control |
| CN208105030U (en) * | 2018-04-09 | 2018-11-16 | 石家庄铁道大学 | A kind of continuous bridge Self-resetting pivoting friction damping device |
-
2018
- 2018-04-09 CN CN201810310899.5A patent/CN108330820B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002038418A (en) * | 2000-05-16 | 2002-02-06 | Kawaguchi Metal Industries Co Ltd | Function separation type bridge support device |
| KR20070016367A (en) * | 2005-08-03 | 2007-02-08 | (주)원에스티 | Leveling device |
| CN103266556A (en) * | 2013-05-23 | 2013-08-28 | 中南大学 | Shock insulation rubber support |
| JP2016118008A (en) * | 2014-12-19 | 2016-06-30 | 西日本高速道路株式会社 | Structural vibration control device, method for removing residual displacement of superstructure using the same and bridge reinforcement method |
| CN105586827A (en) * | 2016-01-29 | 2016-05-18 | 石家庄铁道大学 | Continuous beam bridge vibration reduction device with inertia force activating function |
| CN105735115A (en) * | 2016-03-01 | 2016-07-06 | 石家庄铁道大学 | Connecting shock absorption device for continuous girder bridge zone control |
| CN208105030U (en) * | 2018-04-09 | 2018-11-16 | 石家庄铁道大学 | A kind of continuous bridge Self-resetting pivoting friction damping device |
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| CN108330820A (en) | 2018-07-27 |
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