CN103306194A - Prebias device for bridge seismic reduction and isolation support and method for performing prebias by utilizing prebias device - Google Patents
Prebias device for bridge seismic reduction and isolation support and method for performing prebias by utilizing prebias device Download PDFInfo
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- CN103306194A CN103306194A CN2013102369092A CN201310236909A CN103306194A CN 103306194 A CN103306194 A CN 103306194A CN 2013102369092 A CN2013102369092 A CN 2013102369092A CN 201310236909 A CN201310236909 A CN 201310236909A CN 103306194 A CN103306194 A CN 103306194A
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- isolation support
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Abstract
A prebias device for a bridge seismic reduction and isolation support comprises a prebias component and a prebias power mechanism, wherein the prebiase component is mounted on the periphery of a support padstone and forms a hoop structure with the support padstone; a counterforce frame is arranged on the prebias component located on one side of the support padstone; the prebias power mechanism is mounted on the counterforce frame; and a power output end of the prebias power mechanism is either oppositely mounted on a lower connecting steel plate of the seismic reduction and isolation support on the support padstone, or is connected with the lower connecting steel plate and applies push force or pull force to the lower connecting steel plate in a horizontal direction. The prebias device is scientific in design, simple in structure, convenient to mount and dismount and low in cost, and can be recycled; and a method for performing prebias on the seismic reduction and isolation support by utilizing the prebias device doesn't require large power equipment, is simple and convenient to operate, economical and practical, and can guarantee that the seismic reduction and isolation support can return without deviation when the seismic reduction and isolation support is at a designed closure temperature, so that not only is the support convenient to mount and replace, but also the monitoring for the performance of the seismic reduction and isolation support is facilitated.
Description
Technical field
The present invention relates to a kind of device for installing and adjusting of bridge vibration absorption and isolation support, relate in particular to a kind of bridge vibration absorption and isolation support prebias device and carry out the method for prebias with it.
Background technology
Vibration absorption and isolation support is widely used in the bridge construction engineering, and existing vibration absorption and isolation support does not all carry out prebias before installing, thereby has following deficiency:
1. because the generation of variations in temperature bridge is expanded with heat and contract with cold, off normal may appear in bearing when temperature is closed up in design, and the monitoring of vibration absorption and isolation support performance is made troubles;
2. when being steel box girder for the beam body, because off normal appears in the installing hole that may occur on the steel case beam that expands with heat and contract with cold that the foozle of steel case beam and temperature produce, cause difficulty for installation and the replacing of vibration absorption and isolation support.
Summary of the invention
The technical problem to be solved in the present invention is a kind of simple in structure, economical and practical bridge vibration absorption and isolation support prebias device to be provided, and to carry out the method for prebias with it, to overcome the existing deficiency of above-mentioned prior art.
The technical scheme that the present invention takes is: a kind of bridge vibration absorption and isolation support prebias device, described device comprises prebias assembly and prebias actuating unit, described prebias assembly is installed in the periphery of bearing pad stone, and form hooping structure with bearing pad stone, on the prebias assembly that is positioned at bearing pad stone one side, or at the working platform that is consisted of by its extension reaction frame is set, described prebias actuating unit is installed on the described reaction frame, and the clutch end of prebias actuating unit or subtend are installed in the lower junction steel plate of the vibration absorption and isolation support on the bearing pad stone, or be connected with the lower junction steel plate of vibration absorption and isolation support, and apply thrust or the pulling force of horizontal direction to it.
Its further technical scheme is: described prebias assembly is made of 2 girders and several pull bar, 2 girders are installed in respectively the bearing pad stone left and right sides, described pull bar is installed in respectively both sides, bearing pad stone front and back, and the screw thread by two ends is connected with girder girder strained, thus with bearing pad stone composition hooping structure; Be positioned on the left of the bearing pad stone or on the girder on right side reaction frame is set; Described prebias actuating unit is installed on the reaction frame, described prebias actuating unit is made of hydraulic jack and electric oil pump, the piston end subtend of described hydraulic jack is installed in the lower junction steel plate of the vibration absorption and isolation support on the bearing pad stone, and described hydraulic jack withstands on the thrust that downward junction steel plate under the driving of electric oil pump applies horizontal direction.
Its further technical scheme is: described prebias assembly is made of 2 girders and several floor stringer, 2 girders are installed in respectively before and after the bearing pad stone both sides and extend to bearing pad stone the same side, 2 floor stringers are installed in respectively the bearing pad stone left and right sides, and be connected tension by bolt with 2 girders, thereby form hooping structure with bearing pad stone, described 2 girder extensions and several floor stringer connect and compose prebias actuating unit working platform, and working platform arranges reaction frame away from a side of bearing pad stone; Described prebias actuating unit is installed on the reaction frame, described prebias actuating unit is made of hydraulic jack and electric oil pump, the piston end of described hydraulic jack is connected with the lower junction steel plate of vibration absorption and isolation support on being installed in bearing pad stone, and described hydraulic jack withstands on the pulling force that downward junction steel plate under the driving of electric oil pump applies horizontal direction.
Its further technical scheme is: the piston end of described hydraulic jack is connected with junction steel plate under the vibration absorption and isolation support by assembly pulley and steel cable, and described hydraulic jack applies the pulling force of horizontal direction by assembly pulley and the downward junction steel plate of steel cable.
Its further technical scheme be: described girder or adopt steel plate and reinforcing rib integral solder to make, or adopt i iron to make, described floor stringer employing i iron is made.
Described hydraulic jack is STF single-acting great tonnage hydraulic jack.
Another technical scheme of the present invention is: the method for utilizing above-mentioned bridge vibration absorption and isolation support prebias device vibration absorption and isolation support to be carried out prebias may further comprise the steps:
(1) holds the preformed hole that junction steel plate under the vibration absorption and isolation support is installed successfully at the Pier Design position;
(2) junction steel plate on the vibration absorption and isolation support and case beam are connected firmly;
(3) side that junction steel plate is corresponding with the prebias actuating unit under vibration absorption and isolation support is installed accessory plate, and with bolt itself and lower junction steel plate is connected and fixed:
A. make accessory plate subtend great tonnage hydraulic jack piston, start electric oil pump and drive the great tonnage hydraulic jack, utilize bearing pad stone as the counter-force cushion cap, junction steel plate applies the thrust of horizontal direction downwards; Or
B. utilize shackle with steel cable accessory plate to be connected with assembly pulley, and be connected to the hydraulic jack piston by steel cable, start electric oil pump and drive the great tonnage hydraulic jack, utilize bearing pad stone as the counter-force cushion cap, junction steel plate applies the pulling force of horizontal direction downwards;
(4) after lower junction steel plate generation displacement reaches the design position, by the support base sleeve barrel bolt lower junction steel plate is connected and fixed
On the bridge pier preformed hole, and the cast epoxy mortar;
(5) after epoxy mortar solidifies, remove prebias assembly and prebias actuating unit, prebias is finished.
Owing to adopting technique scheme, the present invention's bridge vibration absorption and isolation support prebias device and carry out the method for prebias with it
Have following beneficial effect:
1. the present invention's bridge vibration absorption and isolation support prebias device mode and bearing pad stone with bolts forms hooping structure, and design science is simple in structure, easy installation and removal, and also reusable, cost is low;
2. adopt the present invention's bridge vibration absorption and isolation support prebias device that the method that vibration absorption and isolation support carries out prebias be need not to use large-sized power plant, easy and simple to handle, economical and practical;
3. the method that adopts the present invention's bridge vibration absorption and isolation support prebias device vibration absorption and isolation support to be carried out prebias, when installing, bearing give first vibration absorption and isolation support pre-partially certain displacement according to field condition, guarantee vibration absorption and isolation support energy return when temperature is closed up in design, off normal does not occur, not only be beneficial to the monitoring to the vibration absorption and isolation support performance, and can avoid because off normal appears in the installing hole that may occur on the steel case beam that expands with heat and contract with cold that the foozle of steel case beam and temperature produce, cause difficulty for installation and the replacing of vibration absorption and isolation support, when particularly the beam body is steel box girder.
Below in conjunction with drawings and Examples the present invention's bridge vibration absorption and isolation support prebias device and the technical characterictic of pre bias method are further described.
Description of drawings
Fig. 1～Fig. 2: the bridge vibration absorption and isolation support prebias apparatus structure schematic diagram (use state) of the embodiment of the invention one;
Fig. 1-front view, the top view of Fig. 2-Fig. 1 (removing case beam and upper junction steel plate);
Fig. 3～Fig. 4: the bridge vibration absorption and isolation support prebias apparatus structure schematic diagram (use state) of the embodiment of the invention two;
Fig. 3-front view, the top view of Fig. 4-Fig. 3 (removing case beam and upper junction steel plate).
Among the figure:
1-case beam, 2-vibration absorption and isolation support, 3-upper junction steel plate, 4-lower junction steel plate, 5-bearing pad stone, 6-pull bar, 7-girder, 8-bridge pier, 9-hydraulic jack, 10-accessory plate, 11-reaction frame, 12-floor stringer, 13-moving pulley bracket, 14-fixed pulley support, 15-fixed pulley, 16-steel cable, 17-movable pulley, 18-shackle.
The specific embodiment
Embodiment one
A kind of bridge vibration absorption and isolation support prebias device, comprise prebias assembly and prebias actuating unit, described prebias assembly is installed in the periphery of bearing pad stone and forms hooping structure with bearing pad stone 5, at the prebias assembly that is positioned at the bearing pad stone right side reaction frame 11 is set, described prebias actuating unit is installed on the described reaction frame, and the clutch end subtend of prebias actuating unit is installed in the lower junction steel plate 4 of the vibration absorption and isolation support on the bearing pad stone and applies thrust or the pulling force of horizontal direction to it.
Described prebias assembly is made of 2 girders 7 and several pull bar 6,2 girders are installed in respectively the bearing pad stone left and right sides, described pull bar is installed in respectively both sides, bearing pad stone front and back, and is connected with girder the girder tension by the screw thread at two ends, thereby forms hooping structure with bearing pad stone; Be positioned on the girder on bearing pad stone right side reaction frame 11 is set; Described prebias actuating unit is installed on the reaction frame, described prebias actuating unit is made of hydraulic jack 9 and electric oil pump, the piston end subtend of described hydraulic jack is installed in the lower junction steel plate 4 of the vibration absorption and isolation support on the bearing pad stone, and described hydraulic jack withstands on the thrust that downward junction steel plate under the driving of electric oil pump applies horizontal direction.
Described girder adopts steel plate and reinforcing rib integral solder to make.
Described hydraulic jack 9 is STF single-acting great tonnage hydraulic jack.
Embodiment two
A kind of bridge vibration absorption and isolation support prebias device, comprise prebias assembly and prebias actuating unit, described prebias assembly is installed in the periphery of bearing pad stone and forms hooping structure with bearing pad stone 5, extend the working platform that consists of at the prebias assembly that is positioned at the bearing pad stone right side reaction frame 11 is set, described prebias actuating unit is installed on the described reaction frame, and the clutch end of prebias actuating unit is connected with the lower junction steel plate 4 of vibration absorption and isolation support on being installed in bearing pad stone and applies the pulling force of horizontal direction to it.
Described prebias assembly is made of 2 girders 7 and several floor stringer 12,2 girders are installed in respectively before and after the bearing pad stone both sides and extend to bearing pad stone the same side, wherein 2 floor stringers are installed in respectively the bearing pad stone left and right sides, and be connected tension by bolt with 2 girders, thereby form hooping structure with bearing pad stone, described 2 girder extensions and 3 floor stringers connect and compose prebias actuating unit working platform, and working platform arranges reaction frame 11 away from a side of bearing pad stone; Described prebias actuating unit is installed on the reaction frame, described prebias actuating unit is made of hydraulic jack 9 and electric oil pump, the piston end of described hydraulic jack is connected with the lower junction steel plate 4 of vibration absorption and isolation support on being installed in bearing pad stone, and described hydraulic jack withstands on the pulling force that downward junction steel plate under the driving of electric oil pump applies horizontal direction.
The piston end of described hydraulic jack is connected with junction steel plate under the vibration absorption and isolation support by assembly pulley and steel cable, and described assembly pulley comprises fixed pulley and movable pulley, and described hydraulic jack applies the pulling force of horizontal direction by assembly pulley and the downward junction steel plate of steel cable.
Described girder and floor stringer adopt i iron to make.
Described hydraulic jack is STF single-acting great tonnage hydraulic jack.
Among above-described embodiment one and the embodiment two, in order to ensure the translation of lower junction steel plate energy, generally adopt at least 2 synchronous application of forces of hydraulic jack, 2 groups of assembly pulleys of corresponding employing in embodiment two.
Conversion as above-described embodiment one and embodiment two:
Described reaction frame can be installed in by the mode of bolt or welding a side of prebias assembly, also can directly utilize girder or floor stringer as reaction frame.
Embodiment three
The method of utilizing above-mentioned bridge vibration absorption and isolation support prebias device vibration absorption and isolation support to be carried out prebias may further comprise the steps:
(1) holds the preformed hole that junction steel plate under the vibration absorption and isolation support is installed successfully at the Pier Design position;
(2) junction steel plate on the vibration absorption and isolation support and case beam are connected firmly;
(3) side that junction steel plate is corresponding with the prebias actuating unit under vibration absorption and isolation support is installed accessory plate 10, and with bolt itself and lower junction steel plate is connected and fixed, and makes accessory plate opposite hydraulic pressure jack piston; Start electric oil pump and drive hydraulic jack, utilize bearing pad stone as the counter-force cushion cap, junction steel plate applies the thrust of horizontal direction downwards;
(4) after lower junction steel plate generation displacement reaches the design position, by the support base sleeve barrel bolt lower junction steel plate is connected and fixed
On the bridge pier preformed hole, and the cast epoxy mortar;
(5) after epoxy mortar solidifies, remove prebias assembly and prebias actuating unit, prebias is finished.
Embodiment four
The method of utilizing above-mentioned bridge vibration absorption and isolation support prebias device vibration absorption and isolation support to be carried out prebias may further comprise the steps:
(1) holds the preformed hole that junction steel plate under the vibration absorption and isolation support is installed successfully at the Pier Design position;
(2) junction steel plate on the vibration absorption and isolation support and case beam are connected firmly;
(3) side that junction steel plate is corresponding with the prebias actuating unit under vibration absorption and isolation support is installed accessory plate 10, and with bolt itself and lower junction steel plate are connected and fixed, utilize shackle 18 with steel cable accessory plate to be connected with assembly pulley, and be connected to the hydraulic jack piston by steel cable; Start electric oil pump and drive hydraulic jack, utilize bearing pad stone as the counter-force cushion cap, junction steel plate applies the pulling force of horizontal direction downwards;
(4) after lower junction steel plate generation displacement reaches the design position, by the support base sleeve barrel bolt lower junction steel plate is connected and fixed
On the bridge pier preformed hole, and the cast epoxy mortar;
(5) after epoxy mortar solidifies, remove prebias assembly and prebias actuating unit, prebias is finished.
Claims (7)
1. bridge vibration absorption and isolation support prebias device, it is characterized in that: described device comprises prebias assembly and prebias actuating unit, described prebias assembly is installed in the periphery of bearing pad stone, and form hooping structure with bearing pad stone, on the prebias assembly that is positioned at bearing pad stone one side, or at the working platform that is consisted of by its extension reaction frame is set, described prebias actuating unit is installed on the described reaction frame, and the clutch end of prebias actuating unit or subtend are installed in the lower junction steel plate of the vibration absorption and isolation support on the bearing pad stone, or be connected with the lower junction steel plate of vibration absorption and isolation support, and apply thrust or the pulling force of horizontal direction to it.
2. bridge vibration absorption and isolation support prebias device according to claim 1, it is characterized in that: described prebias assembly is made of 2 girders and several pull bar, 2 girders are installed in respectively the bearing pad stone left and right sides, described pull bar is installed in respectively both sides, bearing pad stone front and back, and the screw thread by two ends is connected with girder girder strained, thus with bearing pad stone composition hooping structure; Be positioned on the left of the bearing pad stone or on the girder on right side reaction frame is set; Described prebias actuating unit is installed on the reaction frame, described prebias actuating unit is made of hydraulic jack and electric oil pump, the piston end subtend of described hydraulic jack is installed in the lower junction steel plate of the vibration absorption and isolation support on the bearing pad stone, and described hydraulic jack withstands on the thrust that downward junction steel plate under the driving of electric oil pump applies horizontal direction.
3. bridge vibration absorption and isolation support prebias device according to claim 1, it is characterized in that: described prebias assembly is made of 2 girders and several floor stringer, 2 girders are installed in respectively before and after the bearing pad stone both sides and extend to bearing pad stone the same side, 2 floor stringers are installed in respectively the bearing pad stone left and right sides, and be connected tension by bolt with 2 girders, thereby form hooping structure with bearing pad stone, described 2 girder extensions and several floor stringer connect and compose prebias actuating unit working platform, and working platform arranges reaction frame away from a side of bearing pad stone; Described prebias actuating unit is installed on the reaction frame, described prebias actuating unit is made of hydraulic jack and electric oil pump, the piston end of described hydraulic jack is connected with the lower junction steel plate of vibration absorption and isolation support on being installed in bearing pad stone, and described hydraulic jack withstands on the pulling force that downward junction steel plate under the driving of electric oil pump applies horizontal direction.
4. bridge vibration absorption and isolation support prebias device according to claim 3, it is characterized in that: the piston end of described hydraulic jack is connected with junction steel plate under the vibration absorption and isolation support by assembly pulley and steel cable, and described hydraulic jack applies the pulling force of horizontal direction by assembly pulley and the downward junction steel plate of steel cable.
5. according to claim 2,3 or 4 described bridge vibration absorption and isolation support prebias devices, it is characterized in that: described girder or adopt steel plate and reinforcing rib integral solder to make, or adopt i iron to make, described floor stringer employing i iron is made.
6. bridge vibration absorption and isolation support prebias device according to claim 5, it is characterized in that: described hydraulic jack is STF single-acting great tonnage hydraulic jack.
7. the method for utilizing bridge vibration absorption and isolation support prebias device claimed in claim 1 vibration absorption and isolation support to be carried out prebias is characterized in that: said method comprising the steps of:
(1) holds the preformed hole that junction steel plate under the vibration absorption and isolation support is installed successfully at the Pier Design position;
(2) junction steel plate on the vibration absorption and isolation support and case beam are connected firmly;
(3) side that junction steel plate is corresponding with the prebias actuating unit under vibration absorption and isolation support is installed accessory plate, and with bolt itself and lower junction steel plate is connected and fixed:
A. make accessory plate subtend great tonnage hydraulic jack piston, start electric oil pump and drive the great tonnage hydraulic jack, utilize bearing pad stone as the counter-force cushion cap, junction steel plate applies the thrust of horizontal direction downwards; Or
B. utilize shackle with steel cable accessory plate to be connected with assembly pulley, and be connected to the hydraulic jack piston by steel cable, start electric oil pump and drive the great tonnage hydraulic jack, utilize bearing pad stone as the counter-force cushion cap, junction steel plate applies the pulling force of horizontal direction downwards;
(4) after lower junction steel plate generation displacement reaches the design position, by the support base sleeve barrel bolt lower junction steel plate is fastened on the bridge pier preformed hole, and the cast epoxy mortar;
(5) after epoxy mortar solidifies, remove prebias assembly and prebias actuating unit, prebias is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102369092A CN103306194A (en) | 2013-06-16 | 2013-06-16 | Prebias device for bridge seismic reduction and isolation support and method for performing prebias by utilizing prebias device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102369092A CN103306194A (en) | 2013-06-16 | 2013-06-16 | Prebias device for bridge seismic reduction and isolation support and method for performing prebias by utilizing prebias device |
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| CN103306194A true CN103306194A (en) | 2013-09-18 |
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| CN2013102369092A Pending CN103306194A (en) | 2013-06-16 | 2013-06-16 | Prebias device for bridge seismic reduction and isolation support and method for performing prebias by utilizing prebias device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105648918A (en) * | 2016-01-14 | 2016-06-08 | 中铁大桥局集团第四工程有限公司 | Deviation device and construction method thereof |
| CN106758830A (en) * | 2016-12-12 | 2017-05-31 | 中建钢构有限公司 | A kind of bridge lateral adjusting means |
| CN108894101A (en) * | 2018-08-14 | 2018-11-27 | 广东省交通规划设计研究院股份有限公司 | The pre- inclined application method for adjusting component, bridge pad and bridge pad |
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| JPH06108418A (en) * | 1991-07-31 | 1994-04-19 | Yuichi Aida | Reserved shearing deformation installation method and device for rubber bearing |
| CN201420241Y (en) * | 2009-05-07 | 2010-03-10 | 中铁四局集团第四工程有限公司 | Dynamic hydraulic correcting system of steel box girder |
| CN202023150U (en) * | 2011-03-03 | 2011-11-02 | 中铁四局集团第一工程有限公司 | Reaction frame pre-pressing system used in bridge hanging basket construction |
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| CN103572695A (en) * | 2013-07-23 | 2014-02-12 | 柳州东方工程橡胶制品有限公司 | Damping and isolation support provided with pre-biasing devices |
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| JPH06108418A (en) * | 1991-07-31 | 1994-04-19 | Yuichi Aida | Reserved shearing deformation installation method and device for rubber bearing |
| CN201420241Y (en) * | 2009-05-07 | 2010-03-10 | 中铁四局集团第四工程有限公司 | Dynamic hydraulic correcting system of steel box girder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105648918A (en) * | 2016-01-14 | 2016-06-08 | 中铁大桥局集团第四工程有限公司 | Deviation device and construction method thereof |
| CN106758830A (en) * | 2016-12-12 | 2017-05-31 | 中建钢构有限公司 | A kind of bridge lateral adjusting means |
| CN108894101A (en) * | 2018-08-14 | 2018-11-27 | 广东省交通规划设计研究院股份有限公司 | The pre- inclined application method for adjusting component, bridge pad and bridge pad |
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Application publication date: 20130918 |