CN113279325B - Continuous bridge with support separated from resetting function - Google Patents
Continuous bridge with support separated from resetting function Download PDFInfo
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- CN113279325B CN113279325B CN202110732442.5A CN202110732442A CN113279325B CN 113279325 B CN113279325 B CN 113279325B CN 202110732442 A CN202110732442 A CN 202110732442A CN 113279325 B CN113279325 B CN 113279325B
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- 230000007246 mechanism Effects 0.000 claims abstract description 45
- 238000005265 energy consumption Methods 0.000 claims abstract description 43
- 238000000926 separation method Methods 0.000 claims abstract description 20
- 238000004804 winding Methods 0.000 claims description 47
- 230000003014 reinforcing effect Effects 0.000 claims description 18
- 238000004873 anchoring Methods 0.000 claims description 9
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 abstract description 10
- 230000004044 response Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 9
- 230000008439 repair process Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/042—Mechanical bearings
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- Engineering & Computer Science (AREA)
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a continuous girder bridge with a self-resetting function separation support, which comprises a girder, a pier and the self-resetting function separation support, wherein the self-resetting function separation support comprises: the sliding support and the self-resetting energy consumption connecting device are divided into a sliding self-resetting energy consumption connecting device and a locking self-resetting energy consumption connecting device; the locking type self-resetting energy consumption connecting device forms a sliding type self-resetting energy consumption connecting device after the state locking mechanism is removed. The invention has a grading response mechanism for frequent earthquakes, even earthquakes, rare earthquakes or very rare earthquakes; and when the earthquake force is large enough, the locking type self-resetting energy-consuming connecting device is changed into a sliding type self-resetting energy-consuming connecting device. The continuous bridge with the support separated from the resetting function can utilize the earthquake-resistant potential of the movable pier, all piers share earthquake energy together, and finally the structure is restored to the initial position under the combined action of the residual earthquake energy and the restoring force spring.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a self-resetting function separation support continuous beam bridge.
Background
In order to improve the earthquake resistance of the continuous beam bridge, the ductile earthquake-resistant design concept and the earthquake reduction and isolation technology are widely adopted, but the traditional ductile earthquake-resistant design is excessively large in residual deformation after earthquake, difficult to repair and unfavorable for post-disaster rescue traffic, and the conventional earthquake reduction and isolation support is damaged due to excessively large horizontal relative displacement under the action of strong earthquake, so that the horizontal energy consumption and vibration reduction function is lost, the vertical bearing capacity cannot meet the requirements, and the vertical bearing tonnage is large, the structure is complex and the replacement is extremely difficult. Meanwhile, in the earthquake-proof design method, the components bearing normal use function and the components bearing earthquake function are mostly the same components and are combined together in a serial mode, so that the earthquake-proof design method lacks of grading response characteristics and dynamic protection capability, and is difficult to realize the earthquake-proof fortification targets of self-resetting and easy restoration after strong earthquake. And all longitudinal seismic loads of the upper structure of the continuous beam bridge are almost completely borne by the fixed piers under the action of the longitudinal horizontal seismic loads, and the movable piers hardly play a role in sharing the seismic loads.
Accordingly, there is a need for a split-support continuous beam bridge from a reset function to solve the above-described problems.
Disclosure of Invention
The invention aims to provide a continuous beam bridge with a self-resetting function separation support, which solves the problems in the prior art.
In order to achieve the above object, the present invention provides the following solutions: the invention provides a continuous girder bridge with a self-resetting function separation support, which comprises a girder, a pier and a self-resetting function separation support, wherein the self-resetting function separation support is arranged between the girder and the pier and comprises a sliding support and a self-resetting energy consumption connecting device;
the self-resetting energy consumption connecting device is divided into a sliding type self-resetting energy consumption connecting device and a locking type self-resetting energy consumption connecting device;
The two sliding supports are arranged and are respectively arranged on two lateral sides of the bridge pier top surface;
The locking type self-resetting energy consumption connecting device comprises an upper connecting part, a lower connecting part, an energy consumption mechanism, a resetting mechanism and a state locking mechanism;
the upper connecting part is fixedly connected with the bottom surface of the main beam;
the lower connecting part is fixedly connected with the top surface of the pier, the lower connecting part is arranged between the two sliding supports, and the lower connecting part is hinged with the upper connecting part;
the energy dissipation mechanism is arranged between the lower connecting part and the bottom surface of the main beam;
The four resetting mechanisms are arranged, one end of each resetting mechanism is fixedly connected with the limiting assembly, and the other end of each resetting mechanism is fixedly connected with one side of the lower ear plate;
The upper connecting part is connected with the lower connecting part through the state locking mechanism;
And after the state locking mechanism is removed, the locking type self-resetting energy consumption connecting device forms the sliding type self-resetting energy consumption connecting device.
Preferably, the upper connecting part comprises an upper ear plate, an upper connecting plate and an upper anchoring bolt;
The upper connecting plate is arranged on the bottom surface of the main beam, the upper connecting plate is fixedly connected with the bottom surface of the main beam through upper anchor bolts, and the number of the upper lug plates is two and is fixedly connected with two sides of the bottom surface of the upper connecting plate respectively.
Preferably, the lower connecting part comprises a lower connecting plate, a lower anchoring bolt and a lower lug plate;
The lower connecting plates are arranged on the top surface of the pier, the lower connecting plates are fixedly connected with the top surface of the pier through the lower anchor bolts, and the number of the lower lug plates is two and are respectively positioned on two sides of the top surface of the lower connecting plates;
the two lower ear plates and the two upper ear plates are respectively and correspondingly arranged, and the upper ear plates and the lower ear plates which correspond to each other in position are connected through the state locking mechanism.
Preferably, the top surface of the lower connecting plate is further provided with a reinforcing plate, the reinforcing plate is arranged between the two lower ear plates, and the reinforcing plate is arranged in parallel with the lower ear plates.
Preferably, the energy dissipation mechanism comprises a winding shaft, a winding rope and a limiting assembly;
the limiting assemblies are two and fixedly connected with two sides of the bottom surface of the main beam; the limiting components are positioned on two sides of the upper connecting part;
One end of the winding shaft penetrates through the two lower lug plates and the reinforcing plate, and the reinforcing plate divides the winding shaft into a first connecting part and a second connecting part;
the two ends of the two winding ropes are fixedly connected with the two limiting assemblies respectively, and the middle parts of the two winding ropes are wound on the first connecting part and the second connecting part respectively.
Preferably, the limiting assembly comprises a beam bottom bracket, a limiting plate and a limiting bolt;
The limiting plate is fixedly connected with the bottom surface of the main beam through the limiting bolt;
The two beam bottom brackets are fixedly connected with the two sides of the bottom surface of the limiting plate respectively; the side surfaces of the two beam bottom brackets are fixedly connected with one ends of the two winding ropes respectively.
Preferably, the reset mechanism comprises a restoring force spring and a limiting hole;
The limiting holes are formed in the side face of the beam bottom bracket along the vertical direction;
one end of the restoring force spring is connected with any one of the limiting holes, and the other end of the restoring force spring is fixedly connected with the side face of the lower lug plate.
Preferably, two ends of the winding rope are respectively connected with any one of the limiting holes on the two opposite beam bottom brackets.
Preferably, the axial directions of the winding cable and the restoring force spring are perpendicular to the axial direction of the winding shaft.
Preferably, the state locking mechanism comprises a shear pin; the upper ear plate is hinged with the lower ear plate through the shear pin; and after the shear pin is disconnected, the locking type self-resetting energy-consuming connecting device forms the sliding type self-resetting energy-consuming connecting device.
The invention discloses the following technical effects: the invention provides a self-resetting function separation support continuous beam bridge, which has a grading response mechanism for frequent earthquakes, even earthquakes, rare earthquakes or very rare earthquakes while meeting the normal use requirements, so as to protect bridge piers to the maximum extent and improve the integral anti-seismic performance of the continuous beam bridge; the movable piers can bear earthquake loads together through the self-resetting energy consumption connecting device, so that earthquake response of the fixed piers is reduced; after the earthquake peak value, the structure is restored to the initial position under the combined action of the earthquake residual energy and the restoring force spring, so that the self-restoring function after the earthquake has a better earthquake is realized, and the integral restoration of the structure after the earthquake is facilitated. Meanwhile, the invention has the advantages of simple structure, low cost, convenient inspection and maintenance, and the like. The method is suitable for the fields of earthquake resistance reinforcement of railway bridges, highway bridges, urban viaducts and various large-scale newly-built continuous beam structures or existing continuous beam structures.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a locking self-resetting energy-consuming connection device according to the present invention;
FIG. 2 is a cross-sectional view of the locking self-resetting energy consuming connection device of the present invention;
FIG. 3 is a schematic structural diagram of a sliding self-resetting energy-consuming connection device according to the present invention;
FIG. 4 is a cross-sectional view of the sliding self-resetting energy-consuming connection device of the present invention;
FIG. 5 is a schematic diagram of the operation of the present invention in normal use and under normal seismic action;
FIG. 6 is a schematic diagram illustrating the operation of the present invention in response to an earthquake;
FIG. 7 is a schematic diagram of the operation of the present invention under rare or very rare seismic events;
1, a main beam; 2. bridge piers; 3. a sliding support; 4. an upper ear plate; 5. an upper connecting plate; 6. an upper anchoring bolt; 7. a lower connecting plate; 8. a lower anchor bolt; 9. a lower ear plate; 10. a shear pin; 11. a reinforcing plate; 12. a winding shaft; 13. winding a rope; 14. a beam bottom bracket; 15. a limiting plate; 16. a limit bolt; 17. a restoring force spring; 18. and a limiting hole.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
The invention provides a continuous girder bridge with a self-resetting function separation support, which comprises a girder 1, a pier 2 and the self-resetting function separation support, and is characterized in that the self-resetting function separation support is arranged between the girder 1 and the pier 2 and comprises a sliding support 3 and a self-resetting energy consumption connecting device;
The self-resetting energy consumption connecting device is divided into a sliding type self-resetting energy consumption connecting device and a locking type self-resetting energy consumption connecting device;
The two sliding supports 3 are respectively arranged on two lateral sides of the top surface of the bridge pier 2;
The locking type self-resetting energy consumption connecting device comprises an upper connecting part, a lower connecting part, an energy consumption mechanism, a resetting mechanism and a state locking mechanism;
The upper connecting part is fixedly connected with the bottom surface of the main beam 1;
The lower connecting part is fixedly connected with the top surface of the bridge pier 2, is arranged between the two sliding supports 3 and is hinged with the upper connecting part;
the energy dissipation mechanism is arranged between the lower connecting part and the bottom surface of the main beam 1;
Four reset mechanisms are arranged, one end of each reset mechanism is fixedly connected with the limiting component, and the other end of each reset mechanism is fixedly connected with one side of the lower lug plate 9;
the upper connecting part is connected with the lower connecting part through a state locking mechanism;
the locking type self-resetting energy consumption connecting device forms a sliding type self-resetting energy consumption connecting device after the state locking mechanism is removed.
The self-resetting function separating support is arranged between the girder 1 and the pier 2, the sliding support 3 is a common longitudinal sliding support and is used for bearing longitudinal load, the self-resetting energy-consuming connecting device is divided into a locking type self-resetting energy-consuming connecting device and a sliding type self-resetting energy-consuming connecting device, the movable pier is corresponding to the locking type self-resetting energy-consuming connecting device, the traditional bridge fixed pier and the movable pier are omitted, and the fixed pier can be regarded as a stage fixed pier only before the upper connecting part and the lower connecting part are disconnected; when the upper connecting part is connected with the lower connecting part, the bridge structure is in an elastic stage, mainly resistant to earthquake, and the structure is not damaged or minor components are slightly damaged in the earthquake process; after the upper connecting part and the lower connecting part of the continuous beam bridge 'fixed pier' self-resetting function separation support are disconnected, the energy dissipation mechanism plays a role in reducing and isolating vibration. After the earthquake peak value, the reset mechanism enables the self-reset function separation support to be restored to the initial balance position; the invention ensures that the bridge can pass through without repair or simple repair after earthquake is encountered, and ensures the smoothness of post-disaster rescue life line engineering. The damage of the self-resetting energy consumption connecting device in the whole process can be repaired and is easy to repair.
When the number of the continuous Liang Qiaokua is more, the number of the locking type self-resetting energy-consumption connecting devices can be increased according to actual requirements.
In a further optimized scheme, the upper connecting part comprises an upper lug plate 4, an upper connecting plate 5 and an upper anchoring bolt 6;
the upper connecting plate 5 is arranged on the bottom surface of the main beam 1, the upper connecting plate 5 is fixedly connected with the bottom surface of the main beam 1 through an upper anchoring bolt 6, and the upper lug plates 4 are provided with two lugs and are fixedly connected with two sides of the bottom surface of the upper connecting plate 5 respectively.
Further optimizing scheme, the lower connecting part comprises a lower connecting plate 7, a lower anchoring bolt 8 and a lower lug plate 9;
The lower connecting plates 7 are arranged on the top surface of the bridge pier 2, the lower connecting plates 7 are fixedly connected with the top surface of the bridge pier 2 through lower anchor bolts 8, and two lower lug plates 9 are arranged and are respectively positioned on two sides of the top surface of the lower connecting plates 7;
The two lower ear plates 9 and the two upper ear plates 4 are respectively and correspondingly arranged, and the upper ear plates 4 and the lower ear plates 9 which correspond to each other in position are connected through a state locking mechanism.
Under the normal use condition, the shear pin 10 of the continuous beam bridge mainly adopts the 'fixed pier' self-resetting energy consumption self-resetting function separation support to limit the deflection of the upper structure and the lower structure of the bridge, and the shear pin 10 cannot be sheared.
Under the action of frequent earthquake, the bridge structure is in an elastic stage as in normal use, and mainly has earthquake resistance, and the structure is not damaged or minor components are slightly damaged in the earthquake process.
Further optimizing scheme, lower connecting plate 7 top surface still is provided with reinforcing plate 11, and reinforcing plate 11 sets up between two lower otic placodes 9, reinforcing plate 11 and lower otic placode 9 parallel arrangement.
The reinforcing plate 11 that sets up can strengthen the joint strength of winding axle 12 and lower otic placode 9, makes winding cable 13 and winding axle 12 carry out more stable when atress, improves life, reinforcing security performance.
Further optimizing scheme, the energy consumption mechanism comprises a winding shaft 12, a winding rope 13 and a limiting component;
the limiting assemblies are two and fixedly connected with two sides of the bottom surface of the main beam 1; the limiting components are positioned at two sides of the upper connecting part;
One end of the winding shaft 12 penetrates through the two lower lug plates 9 and the reinforcing plate 11, and the reinforcing plate 11 divides the winding shaft 12 into a first connecting part and a second connecting part;
the two winding ropes 13 are arranged, two ends of the two winding ropes 13 are fixedly connected with the two limiting assemblies respectively, and the middle parts of the two winding ropes 13 are wound on the first connecting part and the second connecting part respectively.
Under the action of the earthquake, the action mechanism of the self-resetting function separation support of the movable pier and the fixed pier is the same after the shear pin 10 is sheared due to vibration, the conventional sliding support 3 only bears vertical load, and the winding rope 13 and the restoring force spring 17 start to act. When the longitudinal earthquake load between pier beams is larger than the friction locking force between the winding cable 13 and the winding shaft 12, the winding cable 13 and the winding shaft 12 start to slide relatively, and the earthquake reduction and isolation effects are achieved.
Further optimizing scheme, the limiting component comprises a beam bottom bracket 14, a limiting plate 15 and a limiting bolt 16;
the limiting plate 15 is fixedly connected with the bottom surface of the main beam 1 through a limiting bolt 16;
the two beam bottom brackets 14 are fixedly connected with the two sides of the bottom surface of the limiting plate 15 respectively; the side surfaces of the bracket 14 at the bottom of the two beams are fixedly connected with one ends of the two winding ropes 13 respectively.
Further optimizing scheme, the reset mechanism comprises a restoring force spring 17 and a limiting hole 18;
the limiting holes 18 are formed in the side face of the beam bottom bracket 14 along the vertical direction;
one end of the restoring force spring 17 is connected with any limit hole 18, and the other end of the restoring force spring 17 is fixedly connected with the side face of the lower ear plate 9.
After the earthquake peak, the structure is restored to the initial balance position under the combined action of the residual energy of the earthquake waves and the restoring force spring 17. The main structure and the main components are in a non-damaged or slightly damaged state, and can pass through the earthquake without repair or simple repair, so that the smoothness of post-disaster rescue life line engineering is ensured. The damage of the self-resetting energy consumption connecting device in the whole process can be repaired and is easy to repair.
In a further optimized scheme, two ends of the winding rope 13 are respectively connected with any limiting hole 18 on the two opposite beam bottom brackets 14.
The plurality of limit holes 18 can improve the adaptability of the restoring force spring 17 and the winding rope 13 during connection, and increase the regulation range.
Further preferably, the axial directions of the winding cable 13 and the restoring force spring 17 are perpendicular to the axial direction of the winding shaft 12.
Further optimizing the scheme, the state locking mechanism comprises a shear pin 10; the upper ear plate 4 is hinged with the lower ear plate 9 through a shear pin 10; the locking type self-resetting energy-consuming connection device forms a sliding type self-resetting energy-consuming connection device after the shear pin 10 is disconnected.
Further preferably, the sliding support 3 is provided as a longitudinal sliding support.
The construction process of the invention comprises the following steps:
Two conventional sliding supports are arranged on two sides of the pier top transverse bridge; the self-resetting energy consumption connecting device is arranged in the middle of the sliding support 3, and the self-resetting energy consumption connecting device and the conventional sliding support 3 form a self-resetting function separation support, wherein the shearing resistance of the shear pin 10 and the rigidity of the restoring force spring 17, the initial pre-tension force, the dip angle of the winding rope 13, the pre-tightening force and the winding number of turns in the self-resetting energy consumption connecting device are set according to specific conditions. The specific mounting and connection process is not limited.
In one embodiment of the invention, under the action of rare or rare earthquakes, after the shear pin 10 of the self-resetting energy-consuming connecting device of the 'fixed pier' is sheared, the self-resetting energy-consuming connecting device is severely damaged or even fails, the upper structure is unconstrained in the longitudinal bridge direction, the expansion joint and the sliding support 3 can be severely damaged, the bridge pier 2 is protected to the maximum extent, the damage degree and residual deformation of the bridge pier 2 are controlled in a repairable range, the whole continuous bridge is prevented from collapsing in strong earthquake, and the structure is in a repairable state after the earthquake.
In another embodiment of the invention, the self-resetting energy consumption connecting device is transversely expanded, the lower lug plate and the winding shaft are transversely increased along the bridge deck, the number of winding cables and the self-resetting springs is increased on the basis, and the anti-seismic performance of the self-resetting energy consumption connecting device is improved.
In particular, the post-earthquake self-resetting described above does not require that the parts of the structure be strictly returned to the original positions, but rather that the residual displacement, residual deformation be controlled within the designed acceptable range.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (6)
1. The continuous girder bridge with the self-resetting function separation support comprises a girder (1), a pier (2) and the self-resetting function separation support, and is characterized in that the self-resetting function separation support is arranged between the girder (1) and the pier (2) and comprises a sliding support (3) and a self-resetting energy consumption connecting device;
the self-resetting energy consumption connecting device is divided into a sliding type self-resetting energy consumption connecting device and a locking type self-resetting energy consumption connecting device;
The two sliding supports (3) are arranged on two lateral sides of the transverse bridge on the top surface of the pier (2);
The locking type self-resetting energy consumption connecting device comprises an upper connecting part, a lower connecting part, an energy consumption mechanism, a resetting mechanism and a state locking mechanism;
the upper connecting part is fixedly connected with the bottom surface of the main beam (1);
the lower connecting part is fixedly connected with the top surface of the bridge pier (2), the lower connecting part is arranged between the two sliding supports (3), and the lower connecting part is hinged with the upper connecting part;
the energy dissipation mechanism is arranged between the lower connecting part and the bottom surface of the main beam (1);
the four resetting mechanisms are arranged, one end of each resetting mechanism is fixedly connected with the limiting assembly, and the other end of each resetting mechanism is fixedly connected with one side of the lower lug plate (9);
The upper connecting part is connected with the lower connecting part through the state locking mechanism;
after the state locking mechanism is removed, the locking type self-resetting energy consumption connecting device forms the sliding type self-resetting energy consumption connecting device; the upper connecting part comprises an upper ear plate (4), an upper connecting plate (5) and an upper anchoring bolt (6);
The upper connecting plates (5) are arranged on the bottom surface of the main beam (1), the upper connecting plates (5) are fixedly connected with the bottom surface of the main beam (1) through the upper anchor bolts (6), and the two upper lug plates (4) are respectively fixedly connected with two sides of the bottom surface of the upper connecting plates (5); the lower connecting part comprises a lower connecting plate (7), a lower anchoring bolt (8) and a lower lug plate (9);
The lower connecting plates (7) are arranged on the top surface of the bridge pier (2), the lower connecting plates (7) are fixedly connected with the top surface of the bridge pier (2) through the lower anchoring bolts (8), and the number of the lower lug plates (9) is two and are respectively positioned on two sides of the top surface of the lower connecting plates (7);
The two lower ear plates (9) and the two upper ear plates (4) are respectively and correspondingly arranged, and the upper ear plates (4) corresponding to the positions are connected with the lower ear plates (9) through the state locking mechanism; the top surface of the lower connecting plate (7) is also provided with a reinforcing plate (11), the reinforcing plate (11) is arranged between the two lower ear plates (9), and the reinforcing plate (11) is arranged in parallel with the lower ear plates (9); the state locking mechanism comprises a shear pin (10); the upper ear plate (4) is hinged with the lower ear plate (9) through the shear pin (10); the locking type self-resetting energy consumption connecting device forms the sliding type self-resetting energy consumption connecting device after the shear pin (10) is disconnected.
2. A self-righting discrete support continuous beam bridge as set forth in claim 1 wherein: the energy dissipation mechanism comprises a winding shaft (12), a winding rope (13) and a limiting assembly;
The limiting assemblies are two and fixedly connected with two sides of the bottom surface of the main beam (1); the limiting components are positioned on two sides of the upper connecting part;
One end of the winding shaft (12) penetrates through the two lower lug plates (9) and the reinforcing plate (11), and the reinforcing plate (11) divides the winding shaft (12) into a first connecting part and a second connecting part;
The two winding ropes (13) are arranged, two ends of each winding rope (13) are fixedly connected with the two limiting assemblies respectively, and the middle parts of the two winding ropes (13) are wound on the first connecting part and the second connecting part respectively.
3. A self-righting discrete support continuous beam bridge as set forth in claim 2 wherein: the limiting assembly comprises a beam bottom bracket (14), a limiting plate (15) and a limiting bolt (16);
the limiting plate (15) is fixedly connected with the bottom surface of the main beam (1) through the limiting bolt (16);
the two beam bottom brackets (14) are fixedly connected with two sides of the bottom surface of the limiting plate (15) respectively; the side surfaces of the two beam bottom brackets (14) are fixedly connected with one ends of the two winding ropes (13) respectively.
4. A self-righting discrete support continuous beam bridge as set forth in claim 3 wherein: the reset mechanism comprises a restoring force spring (17) and a limiting hole (18);
the limiting holes (18) are formed in the side face of the beam bottom bracket (14) along the vertical direction;
One end of the restoring force spring (17) is connected with any limit hole (18), and the other end of the restoring force spring (17) is fixedly connected with the side face of the lower lug plate (9).
5. A self-righting discrete support continuous bridge as set forth in claim 4 wherein: the two ends of the winding rope (13) are respectively connected with any one of the limiting holes (18) on the two opposite beam bottom brackets (14).
6. A self-righting discrete support continuous bridge as set forth in claim 5 wherein: the axial direction of the winding cable (13) and the restoring force spring (17) is perpendicular to the axial direction of the winding shaft (12).
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| CN202110732442.5A CN113279325B (en) | 2021-06-30 | 2021-06-30 | Continuous bridge with support separated from resetting function |
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| CN217399383U (en) * | 2021-06-30 | 2022-09-09 | 北京工业大学 | Self-resetting function separation support continuous beam bridge |
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| CN104005489A (en) * | 2014-04-13 | 2014-08-27 | 北京工业大学 | Self-resetting energy-consuming connection device and energy-consuming seismic-absorbing method |
| WO2019024552A1 (en) * | 2017-08-04 | 2019-02-07 | 东南大学 | Self-resetting, friction pendulum three-dimensional seismic damping and isolation bearing |
| 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 |
| WO2020151617A1 (en) * | 2019-01-25 | 2020-07-30 | 石家庄铁道大学 | Negative rigidity shock reduction and isolation device for continuous beam |
| CN217399383U (en) * | 2021-06-30 | 2022-09-09 | 北京工业大学 | Self-resetting function separation support continuous beam bridge |
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