CN108532450B - A kind of continuous bridge preloaded spring temporary consolidation device - Google Patents
A kind of continuous bridge preloaded spring temporary consolidation device Download PDFInfo
- Publication number
- CN108532450B CN108532450B CN201810376956.XA CN201810376956A CN108532450B CN 108532450 B CN108532450 B CN 108532450B CN 201810376956 A CN201810376956 A CN 201810376956A CN 108532450 B CN108532450 B CN 108532450B
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- fixed
- block
- substructure
- preloaded spring
- blocks
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Classifications
-
- 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
-
- 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
- E01D19/048—Bearings being adjustable once installed; Bearings used in incremental launching
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
Abstract
The present invention relates to a kind of continuous bridge preloaded spring temporary consolidation devices, including upper steel plate, it is permanently fixed block, it is fixed temporarily block, preloaded spring, fixed pin, rotating block, connecting shaft and substructure, the horizontal steel plate of substructure is fixed on above bridge pier, rotating block is symmetrically distributed in inside between substructure two blocks of vertical steel plates positioned opposite, rotating block one end is connected and fixed pin by connecting shaft, fixed pin is fixed on substructure two blocks of vertical steel plates positioned opposite, two pieces of rotating blocks are separately connected preloaded spring one end, the preloaded spring other end is fixed on substructure two blocks of vertical steel plates positioned opposite, it is permanently fixed block top and is fixed on upper steel plate bottom, block is fixed temporarily to be fixed on rotating block and be permanently fixed between block.The configuration of the present invention is simple, low in cost, installation maintenance is easy, is easy to repair；Continuous beam hold-down support moment " unlock " can be made anchor block and each sliding pier cooperate with loaded, shared seismic force according to the shock resistance of itself by earthquake when occurring.
Description
Technical field
The present invention relates to a kind of continuous bridge preloaded spring temporary consolidation devices, are suitable for railway bridge, highway bridge, city height
The newly-built or seismic hardening of bridge formation and various beam structures, can make structure cooperative bearing under the geological process that happens suddenly, mention
High structure entirety anti-seismic performance.
Background technique
For the seismic response for reducing continuous bridge, the anti-seismic performance of continuous bridge is improved, usually continuous bridge use is subtracted,
Shock isolating pedestal and viscous damper etc. subtract isolation measure, such as lead core rubber support, viscous damper.But current conventional scheme
All individually loaded without changing continuous bridge anchor block, other existing shock resistances for respectively sliding pier are not played and benefit
State.In recent years, there is scholar to propose Lock-up device, consider from technical standpoint, each pier cooperative bearing may be implemented,
On the one hand not only initial stage is with high costs for such device, but also the inspection in later period and maintenance are miscellaneous, and operation and maintenance cost are high；It is another
Aspect, it is loaded that such device realizes that each bridge pier is cooperateed with by increasing structure overall stiffness, with the conventional design concept for subtracting shock insulation
It runs counter to, therefore applicable elements have certain limitation, the example for being applied to bridge earthquake resistance is less.
Summary of the invention
The purpose of the present invention is to provide a kind of continuous bridge preloaded spring temporary consolidation devices.
The present invention can open the Function Decomposition for the hold-down support that continuous bridge is arranged, and be realized by the present apparatus normal
It is fixed temporarily function under working load effect, under seismic loading, block is fixed temporarily and falls off, the present apparatus " failure ", branch
Seat is worked in the form of movable bearing support.On the one hand: it is fixed temporarily falling off for block, the rigidity of structural system changes,
Natural vibration period extends, to play isolating affection；On the other hand, full-bridge is respectively provided with movable bearing support, the earthquake inertia of superstructure
Power is allocated according to the composite rigidity of bridge pier, support, and the stress of each bridge pier can tend to be average.It overcomes foregoing continuous
Beam bridge anchor block is individually loaded, the state that other existing shock resistances for respectively sliding pier are not played and utilized.
The technical scheme is that a kind of continuous bridge preloaded spring temporary consolidation device, including it is upper steel plate, permanent solid
Determine block, be fixed temporarily block, adjustable preloaded spring, fixed pin, rotating block, connecting shaft and substructure, in which: substructure is by four
The rectangular parallelepiped structure of the vertical steel plate of block and one piece of horizontal steel plate connection composition, the horizontal steel plate of substructure are fixed on bridge pier
Side, rotating block are symmetrically distributed in inside between substructure two blocks of vertical steel plates positioned opposite, and rotating block one end passes through connection
Axis connection fixed pin, the fixed pin are fixed on substructure two blocks of vertical steel plates positioned opposite, two pieces of rotating block difference
Preloaded spring one end is connected, the preloaded spring other end is fixed on substructure two blocks of vertical steel plates positioned opposite, forever
Upper steel plate bottom is fixed on long fixed block top, is fixed temporarily block both ends and is separately connected two pieces of rotating blocks, one side connection is permanent
Fixed block is fixed temporarily block and is fixed on rotating block and is permanently fixed between block.
In the present invention, for the buckling for preventing the vertical steel plate of substructure, ribbed stiffener 8 is provided on four blocks of vertical steel plates.
In the present invention, in normal state, temporary consolidation block can be fixed on and be permanently fixed by preloaded spring described device
Between block and rotating block, by being fixed temporarily block and being permanently fixed between block and be fixed temporarily rubbing between block and rotating block
It wipes power and meets the longitudinally fixed needs of support.
In the present invention, in earthquake burst, earthquake ground motion acceleration activates described device, under seismic acceleration effect, if
It sets the preloaded spring after rotating block to deform, so that being fixed temporarily block leaves home position, fall off, rotating block and permanent
The movable function of the device is realized in relative displacement between fixed block.
The working principle of device of the present invention is as follows:
1, normal use load (or earthquake of setting up defences) can be realized by the way that rigidity, deflection and the number of preloaded spring is arranged
Function is fixed temporarily under effect；
2, after seismic loading is more than the elastic restoring force that set preloaded spring provides, rotating block occurs to turn
It is dynamic, so that the preloaded spring of side is occurred compressive deformation, other side preloaded spring recoverable force causes to be fixed temporarily block and falls off, from
And realize the movable function of the device；
3, after device activity, movable bearing support set by bridge pier can be made to play one's part to the full, on the one hand change structure
Rigidity, plays isolating affection at the natural vibration period of extending structure；On the other hand, it is played by the frictional resistance of the movable bearing support of setting
Damping effect.
4, by the setting of movable bearing support, the bridge pier stress in every may make to tend to be average, it is ensured that bridge pier structure has
Identical seismic safety degree.
The beneficial effects of the present invention are:
The configuration of the present invention is simple, low in cost, installation maintenance is easy, is easy to repair；Earthquake can be by continuous beam when occurring
Hold-down support moment " unlock " makes anchor block and each sliding pier cooperate with loaded, shared earthquake according to the shock resistance of itself
Power；It can achieve the purpose that improve continuous bridge entirety anti-seismic performance in the case where not increasing the existing shock resistance of anchor block；If
There is adjustable preloaded spring, realizes that normal use load (or sets up defences against ground by the way that rigidity, deflection and the number of preloaded spring is arranged
Shake) effect under be fixed temporarily function, it is ensured that the use function under normal condition.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Figure label: 1 is upper steel plate, and 2 is are permanently fixed block, and 3 is are fixed temporarily block, and 4 be preloaded spring, and 5 be fixed pin,
6 be rotating block, and 7 be connecting shaft, and 8 be ribbed stiffener, and 9 be substructure, and 10 be bridge pier.
Specific embodiment
The present invention is further illustrated below by embodiment combination attached drawing.
Embodiment 1:
With reference to embodiments and attached drawing is described in further detail, but not as a limitation of the invention.
Embodiment 1: the structure of the present embodiment as shown in Figure 1, a kind of continuous bridge preloaded spring temporary consolidation device, including
Upper steel plate 1, be permanently fixed block 2, be fixed temporarily block 3, preloaded spring 4, fixed pin 5, rotating block 6, connecting shaft 7, ribbed stiffener 8 and under
Portion's structure 9 is mounted on bridge pier 10.Block 3 is fixed temporarily by preloaded spring 4, be fixed on be permanently fixed block 2 and rotating block 6 it
Between.Rotating block 6 is connect by connecting shaft 7 with the fixed pin 5 being fixed in substructure 9.Substructure 9 is one perpendicular by four pieces
The rectangular configuration of straight steel plate and one piece of horizontal steel plate composition is arranged ribbed stiffener 8, passes through bottom steel for the buckling for preventing vertical steel plate
Plate is attached with bridge pier.
Claims (4)
1. a kind of continuous bridge preloaded spring temporary consolidation device, including upper steel plate, it is permanently fixed block, is fixed temporarily block, preloads
Spring, fixed pin, rotating block, connecting shaft and substructure, it is characterised in that: substructure is by four blocks of vertical steel plates and one block of water
The rectangular parallelepiped structure of plain plate connection composition, the horizontal steel plate of substructure are fixed on above bridge pier, and rotating block is symmetrically distributed in
Inside between substructure two blocks of vertical steel plates positioned opposite, rotating block one end is connected and fixed pin by connecting shaft, described solid
Rationed marketing is fixed on substructure two blocks of vertical steel plates positioned opposite, and two pieces of rotating blocks are separately connected preloaded spring one end, institute
It states the preloaded spring other end to be fixed on substructure two blocks of vertical steel plates positioned opposite, is permanently fixed block top and is fixed on
Steel plate bottom is fixed temporarily block both ends and is separately connected two pieces of rotating blocks, and one side connection is permanently fixed block, that is, it is solid to be fixed temporarily block
Due to rotating block and it is permanently fixed between block.
2. continuous bridge preloaded spring temporary consolidation device according to claim 1, it is characterised in that four blocks of vertical steel plates
On be provided with ribbed stiffener, to prevent the buckling of the vertical steel plate of substructure.
3. continuous bridge preloaded spring temporary consolidation device according to claim 1, it is characterised in that described device is just
Under normal state, being fixed temporarily block can be fixed on and be permanently fixed between block and rotating block, by being fixed temporarily block by preloaded spring
Meet the longitudinally fixed needs of support with the frictional force for being permanently fixed between block and being fixed temporarily between block and rotating block.
4. continuous bridge preloaded spring temporary consolidation device according to claim 1, it is characterised in that in earthquake burst,
Earthquake ground motion acceleration activates described device, under seismic acceleration effect, the preloaded spring after rotating block is arranged in and becomes
Shape falls off so that being fixed temporarily block leaves home position, and the dress is realized in rotating block and the relative displacement being permanently fixed between block
The movable function set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810376956.XA CN108532450B (en) | 2018-04-25 | 2018-04-25 | A kind of continuous bridge preloaded spring temporary consolidation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810376956.XA CN108532450B (en) | 2018-04-25 | 2018-04-25 | A kind of continuous bridge preloaded spring temporary consolidation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108532450A CN108532450A (en) | 2018-09-14 |
| CN108532450B true CN108532450B (en) | 2019-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810376956.XA Active CN108532450B (en) | 2018-04-25 | 2018-04-25 | A kind of continuous bridge preloaded spring temporary consolidation device |
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| CN (1) | CN108532450B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555009B (en) * | 2019-01-24 | 2023-08-15 | 湖南中腾土木工程技术有限公司 | Support and beam body shock absorption and insulation structure system and application thereof |
| CN109853370B (en) * | 2019-01-25 | 2020-07-03 | 石家庄铁道大学 | Negative stiffness seismic isolation and reduction device for continuous beam |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3046929B2 (en) * | 1995-06-16 | 2000-05-29 | 三菱重工業株式会社 | Bridge seismic isolation structure |
| JP3038343B2 (en) * | 1997-03-05 | 2000-05-08 | 株式会社ダイナミックデザイン | Damping device and mounting method |
| US20030099413A1 (en) * | 2001-11-26 | 2003-05-29 | Lee George C. | Seismic isolation bearing |
| KR100647523B1 (en) * | 2006-08-19 | 2006-11-29 | 주식회사 도화종합기술공사 | Fall down prevent apparatus for rail road bridge |
| KR101504617B1 (en) * | 2013-06-04 | 2015-03-20 | 한국수력원자력 주식회사 | The isolating device with seismic isolators against wind |
| CN104695323A (en) * | 2013-12-04 | 2015-06-10 | 汪穹立 | Bridge damping support |
| CN204780635U (en) * | 2015-05-13 | 2015-11-18 | 中建六局土木工程有限公司 | Super wide nonprismatic continuous beam 0# piece concreties and relieves construction structures |
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| CN108532450A (en) | 2018-09-14 |
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