CN107675634A - A kind of steel reinforced concrete combined bridge antidumping bracing means and its construction method - Google Patents
A kind of steel reinforced concrete combined bridge antidumping bracing means and its construction method Download PDFInfo
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- CN107675634A CN107675634A CN201710959541.0A CN201710959541A CN107675634A CN 107675634 A CN107675634 A CN 107675634A CN 201710959541 A CN201710959541 A CN 201710959541A CN 107675634 A CN107675634 A CN 107675634A
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- key seat
- connector
- fitting
- built
- bracing means
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of steel reinforced concrete combined bridge antidumping bracing means and its construction method, described device girder side steel plate (2) is fixed on the side of girder (1), and upper key seat (3.1) is fixed on girder side steel plate (2)；The built-in fitting (6), which is fixed on the upper surface and built-in fitting (6) of bent cap or pier stud (8), is fixed with lower key seat (3.2)；The upper end of the transformation of the way damper (5) is connected by upper connector (4.1) and upper key seat (3.1), and the lower end of transformation of the way damper (5) is connected by lower connector (4.2) and lower key seat (3.2).This bracing means is when serious super leaning load, blast, when beam body is by high torque, control beam body is not toppled, improve bridge stability against overturning, collapse so as to prevent bridge calamity and avoid casualties, and transformation of the way damper can give full play to the energy dissipating performance of damper in the present apparatus, good action can be played in accidents such as blast, earthquakes.
Description
Technical field
The present invention relates to a kind of steel reinforced concrete combined bridge antidumping bracing means and its construction method, belong to Structural Engineering technology
Field.
Background technology
In recent decades, Bridges in Our Country development is rapid, and the bridge in China particularly urban elevated bridge, makes more at present
With board-like and pot rubber bearing, bridge deck is directly placed on bearing, and bearing can not constrain the vertical displacement of bridge deck, and
The generally use steel reinforced concrete combined bridge in the selection of ring road or turn etc. curve bridge.Steel reinforced concrete combined bridge mixes with prestressing force
Coagulate native box beam to compare, its deadweight is smaller, and when bridge bears larger uneven loading action, bridge deck may be due to larger moment of torsion
And the risk toppled more is also easy to produce, Zai You China Short/Medium Span Bridge is wanted to adapt to bridge local environment to bridge type arrangement
Ask, improve the outward appearance of transport hub, reduce land occupation, avoid conflicting between bridge foundation and hypogee position, reduce
The reasons such as the destruction to natural environment use Single column pier more, so must ensure such bridge during operation in the design phase
Possess antidumping safety stock rational enough, while rational bracing means is also used in this kind of bridge runed
To improve its stability against overturning.Therefore, need one kind badly and disclosure satisfy that bridge structure mechanical characteristic and resistance are toppled and construct dress
Put.
In fact, existing in engineering set supporting member (such as steel construction) to improve support directly between bridge pier and girder
Rigidity, it is rigidly connected because the supporting member is generally with the connected mode of bridge pier (or bent cap) and girder, the meeting that is rigidly connected
Significantly limit girder temperature, shrinkage and creep etc. effect under vertical bridge to displacement and corner displacement, once the displacement occur but by
To limitation, in the presence of second inner force then can breaking plant in turn, substantially reduce the ability of its antidumping；Also useful chain lock
To reinforce stabilization, such transposition flexibility is too big, can not consume unfavorable energy in time in accident and can rush beam body
Measure excessive and cause failure of apparatus.
The content of the invention
Technical problem：It is an object of the invention to provide a kind of steel reinforced concrete combined bridge antidumping bracing means and its construction party
Method, the device can control beam body not topple, improve bridge when the serious super leaning load beam body of bridge is by high torque
Stability against overturning, and it is the device simple structure, easy for construction and there is higher economic performance.
Technical scheme：The invention provides a kind of steel reinforced concrete combined bridge antidumping bracing means, the bracing means includes master
Beam side welding steel, built-in fitting, upper key seat, lower key seat, upper connector, lower connector and transformation of the way damper；Wherein described girder
In the side of girder, upper key seat is fixed on the steel plate of girder side side Interal fixation；The built-in fitting is fixed on bent cap or pier stud
Lower key seat is fixed with upper surface and built-in fitting；The upper end of described transformation of the way damper is connected by upper connector with upper key seat,
The lower end of transformation of the way damper is connected by lower connector with lower key seat.
Wherein：
Described steel reinforced concrete combined bridge antidumping bracing means is symmetrically distributed in the both sides of bridge along bridge length direction.
Described girder side Interal fixation is fixed on the steel plate of girder side in the fixed form of the side of girder, upper key seat
Fixed form is or high-strength bolt connects.
Described built-in fitting, which is fixed on the upper surface of bent cap or pier stud and built-in fitting, is fixed with lower key seat, and built-in fitting is by steel
Plate and the reinforcing bar composition being welded on steel plate, reinforcing bar are located at the inside of bent cap or pier stud, and steel plate is located at the table of bent cap or pier stud
Face, and fixed lower key seat refers to the upper surface of steel plate welding in built-in fitting or is connected with lower pin with high-strength bolt on built-in fitting
Seat.
The reinforcing bar being welded in described built-in fitting on steel plate opens cloth with girder reinforcing bar, bent cap reinforcing bar or foot stall steel cross dystopia of muscle and tendon
Put.
Described upper connector and lower connector are that one end is the entity bar spherical, the other end is spiral connector, its material
Matter is steel or high-performance carbon fibre material.
Described upper key seat and lower key seat are spelled by two pieces of blooms slotted with hemispherical or high-performance carbon fibre material
Connect composition, and hemispherical slotting position is corresponding is combined into spherical fluting, described spherical fluting be used to fixing upper connector and under
The spheric end of connector.
Described upper key seat and lower key seat are spelled by two pieces of blooms slotted with hemispherical or high-performance carbon fibre material
Composition is connect, its connecting method is welding or high-strength bolt connection.
Described transformation of the way damper is that the both ends transformation of the way for the conventional damper that both ends are carried into spherical free bearing is spiral bayonet socket,
The spiral connector with upper connector and lower connector is connected respectively.
Described transformation of the way damper and upper key seat, the link position of lower key seat, angle are according to the sky of girder, bent cap or pier stud
Between position adjustment.
Present invention also offers a kind of construction method of steel reinforced concrete combined bridge antidumping bracing means, the construction method includes
Following steps：
1) girder side steel plate is fixedly connected with the side of girder, arranges built-in fitting in bent cap or pier stud, and by built-in fitting
Pour sealing；
2) spheric end of upper connector is placed in the spherical fluting of upper key seat, and upper key seat is fixed on girder side steel
On plate, and the spiral connector extreme direction of upper connector is down；
3) spheric end of lower connector is placed in the spherical fluting of lower key seat, and lower key seat is fixed on built-in fitting
Upper surface, and the spiral connector extreme direction of lower connector is upward；
4) the spiral bayonet socket for the upper/lower terminal for changing a social system damper is connected on upper connector respectively, the spiral of lower connector connects
Interface end.
5) along bridge length direction, by the antidumping bracing means symmetrical construction in the both sides of bridge.
Beneficial effect：Compared with prior art, the present invention has the advantage that：
(1) girder and bent cap or pier stud are connected by changing a social system damper, can effectively limits the vertical of pontic
Displacement, prevent pontic from being toppled under serious unbalance loading, and the transformation of the way damper in the present invention can give full play to compared with other devices
The energy dissipating performance of damper, good action can be played in accidents such as blast, earthquakes.
(2) middle connection is mostly rigidly connected compared with prior art or plane is hinged, the connector and key seat in the present invention
Connected mode is hinged for space, does not only reach the mechanics effect of vertical supporting, also causes be hinged along vertical bridge to direction and direction across bridge
Limited displacement and corner can freely occur for direction, it is ensured that girder can freely produce displacement under the effect such as temperature, shrinkage and creep
With corner, the present apparatus is destroyed without causing larger second inner force because of displacement limitation.
(3) apparatus of the present invention are installed in the both sides of bridge, and construction space is sufficient；And apparatus of the present invention can both be used in old bridge
Reinforce, can also be used in new bridge design, especially in old bridge reinforcement application, it is not necessary to the complex operations such as beam body are lifted,
It need to only be installed in beam body both sides.
Brief description of the drawings
Fig. 1 is the overall elevation of the present invention；
Fig. 2 is A-A part sectioned views in Fig. 1；
Fig. 3 is B-B profiles in Fig. 2；
Fig. 4 is key seat elevation；
Fig. 5 is connecting piece structure figure；
Fig. 6 is transformation of the way damper structure figure；
Fig. 7 is the construction process figure of the present invention；
Have in figure：Girder 1, girder side steel plate 2, upper key seat 3.1, lower key seat 3.2, upper connector 4.1, lower connector 4.2,
Change a social system damper 5, built-in fitting 6, bearing 7, bent cap or pier stud 8.
Embodiment
The present invention by setting transformation of the way damper 5 between girder 1 and bent cap or pier stud 8, and by special connector and
The vertical contact of key seat connection between the two, so that when serious super leaning load, blast, when beam body is by high torque,
Control beam body is not toppled, and improves the stability against overturning of bridge, is collapsed so as to prevent bridge calamity and is avoided personnel from hindering
Die, and change a social system damper in this bracing means to give full play to the energy dissipating performance of damper compared with other devices, can blast,
The accidents such as earthquake play good action.
Below in conjunction with accompanying drawing, structure, work progress to the present invention are described in detail：
As shown in Figure 1 and Figure 2, two sets are respectively symmetrically set to add between the both sides of girder 1, girder 1 and bent cap or pier stud 8
Be fixedly mounted with and put, the bracing means include girder side steel plate 2, built-in fitting 6, upper key seat 3.1, lower key seat 3.2, upper connector 4.1, under
Connector 4.2 and transformation of the way damper 5；Wherein described girder side steel plate 2 is fixedly welded on the side of girder 1, and upper key seat 3.1 welds
Connect and be fixed on girder side steel plate 2；Built-in fitting 6 is made up of steel plate and the reinforcing bar being welded on steel plate, reinforcing bar be located at bent cap or
The inside of pier stud 8, steel plate is located at the surface of bent cap or pier stud 8, and the upper surface of steel plate in built-in fitting 6 is welded with lower pin
Seat 3.2；Upper key seat 3.1 and lower key seat 3.2 are the bloom with spherical fluting, by two pieces of blooms with hemispherical fluting
Be welded to form (as shown in Figure 3, Figure 4), at its spherical fluting respectively with upper connector 4.1 and the spheric end of lower connector 4.1
(as shown in Figure 5) is fixedly connected, and the spiral connector end of upper connector 4.1 and lower connector 4.1 is respectively at transformation of the way damping 5
The spiral bayonet socket connection (as shown in Figure 6) at both ends.
During for old bridge addition bracing means of the invention, corresponding part concrete pre-buried built-in fitting again can be chiseled；It is right
When the bracing means of the newly building bridge addition present invention, pre-buried built-in fitting is considered in the design process.
The making of described upper key seat 3.1, lower key seat 3.2, upper connector 4.1, lower connector 4.2 must hinder with the transformation of the way
Buddhist nun's device 5 is mutually matched, it is ensured that the stability of connection.
The making of described upper key seat 3.1, lower key seat 3.2, upper connector 4.1, lower connector 4.2 must hinder with the transformation of the way
Buddhist nun's device 5 connects setting and meets design requirement, it is ensured that connector 4 can bear larger vertical force.
Described transformation of the way damper 5 is determined according to the size in installation exercise region, can be with if installation exercise region is larger
Mechanical damper is selected to change a social system；If installation exercise region is small fluid pressure type damper can be selected to change a social system.
Antidumping bracing means includes girder side welding steel 2, key seat 3, connector 4, transformation of the way damper 5, bent cap or pier
Built-in fitting 6 in post.
The old bridge reinforcement of embodiment 1
It is first according to beam body tonnage and it is expected that the rational transformation of the way damper 5 of overload condition selection；Then welded in the side of girder 1
Beam side steel plate 2 is connect, arranging that position corresponding to built-in fitting 6 is chiseled in bent cap or pier stud 8, rear arrangement built-in fitting 6 simultaneously pours envelope
Gu；Upper key seat 3.1 is welded on beam side steel plate 2, lower key seat 3.2 is welded on the steel plate of built-in fitting 6；In upper key seat 3.1 with
While the assembly welding of key seat 3.2, the spheric end of upper connector 4.1 and lower connector 4.2 is placed in upper key seat 3.1 with
In 3.2 spherical fluting of key seat；The spiral bayonet socket for changing a social system the upper/lower terminal of damper 5 afterwards is connected on installed in upper connector respectively
4.1 and the spiral connector end of lower connector 4.1.
The new bridge design and installation of embodiment 2
It is first according to beam body tonnage and it is expected that the rational transformation of the way damper 5 of overload condition selection；Then welded in the side of girder 1
Beam side steel plate 2 is connect, considers to arrange built-in fitting 6 in bent cap or pier stud 8 during design；Upper key seat 3.1 is welded on beam
On side steel plate 2, lower key seat 3.2 is welded on the steel plate of built-in fitting 6；While upper key seat 3.1 and the assembly welding of lower key seat 3.2,
The spheric end of upper connector 4.1 and lower connector 4.2 is placed in 3.2 spherical fluting of upper key seat 3.1 and lower key seat；It
The spiral bayonet socket of the upper/lower terminal of transformation of the way damper 5 is connected on the spiral shell installed in upper connector 4.1 and lower connector 4.1 respectively afterwards
Revolve connector end.
As described above, although the present invention has been represented and described with reference to specific preferred embodiment, but it must not be explained
For to the limitation of itself of the invention., can be right under the premise of the spirit and scope of the present invention that appended claims define are not departed from
Various changes can be made in the form and details for it.
Claims (9)
- A kind of 1. steel reinforced concrete combined bridge antidumping bracing means, it is characterised in that：Described bracing means includes girder side steel plate (2), built-in fitting (6), upper key seat (3.1), lower key seat (3.2), upper connector (4.1), lower connector (4.2) and transformation of the way damper (5)；Wherein described girder side steel plate (2) is fixed on the side of girder (1), and upper key seat (3.1) is fixed on girder side steel plate (2) On；The built-in fitting (6), which is fixed on the upper surface and built-in fitting (6) of bent cap or pier stud (8), is fixed with lower key seat (3.2)；Institute The upper end for the transformation of the way damper (5) stated is connected by upper connector (4.1) and upper key seat (3.1), the lower end of transformation of the way damper (5) Connected by lower connector (4.2) and lower key seat (3.2).
- A kind of 2. steel reinforced concrete combined bridge antidumping bracing means as claimed in claim 1, it is characterised in that：Described steel reinforced concrete group Close the both sides that bridge antidumping bracing means is symmetrically distributed in bridge along bridge length direction.
- A kind of 3. steel reinforced concrete combined bridge antidumping bracing means as claimed in claim 1, it is characterised in that：Described girder side The fixation side that steel plate (2) is fixed on the fixed form of the side of girder (1), upper key seat (3.1) is fixed on girder side steel plate (2) Formula is welding or high-strength bolt connection.
- A kind of 4. steel reinforced concrete combined bridge antidumping bracing means as claimed in claim 1, it is characterised in that：Described built-in fitting (6) it is fixed on the upper surface of bent cap or pier stud (8) and built-in fitting (6) and is fixed with lower key seat (3.2), built-in fitting (6) is by steel plate And the reinforcing bar composition on steel plate is welded on, reinforcing bar is located at the inside of bent cap or pier stud (8), and steel plate is located at bent cap or pier stud (8) Surface, and fixed lower key seat (3.2) refers to upper surface of steel plate welding in built-in fitting (6) or with high-strength on built-in fitting (6) Bolt connection has lower key seat (3.2).
- A kind of 5. steel reinforced concrete combined bridge antidumping bracing means as claimed in claim 1, it is characterised in that：Described upper connection Part (4.1) and lower connector (4.2) are that one end is the entity bar spherical, the other end is spiral connector, its material be steel or High-performance carbon fibre material.
- A kind of 6. steel reinforced concrete combined bridge antidumping bracing means as claimed in claim 1, it is characterised in that：Described upper key seat (3.1) and lower key seat (3.2) is by two pieces of blooms slotted with hemispherical or high-performance carbon fibre material splicing composition, and partly Spherical slotting position is corresponding to be combined into spherical fluting, and described spherical fluting is used to fix upper connector (4.1) or lower connector (4.2) spheric end.
- A kind of 7. steel reinforced concrete combined bridge antidumping bracing means as claimed in claim 6, it is characterised in that：Described upper key seat (3.1) and lower key seat (3.2) is by two pieces of blooms slotted with hemispherical or high-performance carbon fibre material splicing composition, and it is spelled Mode is connect as welding or high-strength bolt connection.
- A kind of 8. steel reinforced concrete combined bridge antidumping bracing means as claimed in claim 1, it is characterised in that：Described transformation of the way resistance Buddhist nun's device (5) be by both ends with spherical free bearing conventional damper both ends the transformation of the way be spiral bayonet socket, respectively with upper connector (4.1) the spiral connector with lower connector (4.2) is connected.
- A kind of 9. construction method of steel reinforced concrete combined bridge antidumping bracing means as claimed in claim 1, it is characterised in that：Should Construction method comprises the following steps：1) girder side steel plate (2) is fixedly connected with the side of girder (1), the arrangement built-in fitting (6) in bent cap or pier stud (8), and Built-in fitting (6) is poured into sealing；2) spheric end of upper connector (4.1) is placed in the spherical fluting of upper key seat (3.1), and upper key seat (3.1) is solid Due on girder side steel plate (2), and the spiral connector extreme direction of upper connector (4.1) is down；3) spheric end of lower connector (4.2) is placed in the spherical fluting of lower key seat (3.2), and lower key seat (3.2) is solid Due to the upper surface of built-in fitting (6), and the spiral connector extreme direction of lower connector (4.2) is upward；4) the spiral bayonet socket for the upper/lower terminal for changing a social system damper (5) is connected on upper connector (4.1), lower connector (4.2) respectively Spiral connector end；5) along bridge length direction, by the antidumping bracing means symmetrical construction in the both sides of bridge.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710959541.0A CN107675634A (en) | 2017-10-16 | 2017-10-16 | A kind of steel reinforced concrete combined bridge antidumping bracing means and its construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710959541.0A CN107675634A (en) | 2017-10-16 | 2017-10-16 | A kind of steel reinforced concrete combined bridge antidumping bracing means and its construction method |
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| CN201710959541.0A Pending CN107675634A (en) | 2017-10-16 | 2017-10-16 | A kind of steel reinforced concrete combined bridge antidumping bracing means and its construction method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110700126A (en) * | 2019-11-13 | 2020-01-17 | 北京工业大学 | Single-column pier bridge anti-overturning device |
| CN111005308A (en) * | 2019-12-27 | 2020-04-14 | 浙江省交通规划设计研究院有限公司 | Single-column type bridge pier beam bridge and reinforcing and modifying method thereof |
| CN111910500A (en) * | 2020-02-21 | 2020-11-10 | 清华大学 | Anti-overturning combined bridge and construction method |
| CN112342940A (en) * | 2020-11-05 | 2021-02-09 | 贵州路桥集团有限公司 | Steel-concrete composite beam bridge deck reinforcing device |
| CN113494056A (en) * | 2021-07-13 | 2021-10-12 | 石家庄铁道大学 | Existing railway small-span beam reinforcing system and method based on additional support |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110700126A (en) * | 2019-11-13 | 2020-01-17 | 北京工业大学 | Single-column pier bridge anti-overturning device |
| CN111005308A (en) * | 2019-12-27 | 2020-04-14 | 浙江省交通规划设计研究院有限公司 | Single-column type bridge pier beam bridge and reinforcing and modifying method thereof |
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| CN113494056A (en) * | 2021-07-13 | 2021-10-12 | 石家庄铁道大学 | Existing railway small-span beam reinforcing system and method based on additional support |
| CN113494056B (en) * | 2021-07-13 | 2022-08-30 | 石家庄铁道大学 | Existing railway small-span beam reinforcing system and method based on additional support |
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Application publication date: 20180209 |