CN112376398A - Bridge multistage anti-vibration and anti-overturning linkage device protection method - Google Patents
Bridge multistage anti-vibration and anti-overturning linkage device protection method Download PDFInfo
- Publication number
- CN112376398A CN112376398A CN202011222060.XA CN202011222060A CN112376398A CN 112376398 A CN112376398 A CN 112376398A CN 202011222060 A CN202011222060 A CN 202011222060A CN 112376398 A CN112376398 A CN 112376398A
- Authority
- CN
- China
- Prior art keywords
- bridge
- electromagnetic
- supporting device
- permanent magnet
- mercury switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
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
-
- 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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- 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
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a method for protecting a bridge multistage shockproof and anti-overturning linkage device, which comprises the following steps: s1, primary protection, reinforcement and shock absorption: the vehicle load above the bridge deck is in a range (X is bridge length) of 290kN < F < (17.5X +190KN), the air springs and the buffer springs of the ring fixing plates in the anti-vibration supporting device are alternately fixed between the upper ring fixing plate and the lower ring fixing plate, the air pressure value of the air springs is adjusted, so that the anti-vibration supporting device reaches a required pressure value which is 290 KN-17.5X +190KN, and when the resultant load force is 290kN < F < (17.5X +190KN), the pressure value of the air springs meets the supporting requirement and supports the bridge deck. According to the protection method of the bridge multistage anti-vibration and anti-overturning linkage device, linkage among devices is realized through the load effect of the upper part of the bridge and a circuit diagram, all mechanisms selectively work under the condition that the bridge faces repeated load, overload load and natural disaster, multistage protection in the bridge overturning process is realized, and the accuracy and the efficiency of the bridge anti-vibration and anti-overturning are improved.
Description
Technical Field
The invention belongs to the technical field of bridge seismic strengthening, and relates to a method for protecting a bridge multistage seismic-proof and anti-overturning linkage device.
Background
The single-pier bridge has the advantages of small clearance under the bridge, simplicity, smoothness, attractive appearance, strong adaptability, good economical efficiency and the like, and is widely applied to urban bridges and various complex terrains. However, in recent years, with the rapid development of economy in China, the traffic flow and the vehicle load are continuously increased, the vehicle overload and the vehicle deviation cause that the single-column pier bridge has a plurality of overturning accidents in the use process, so that casualties and economic losses are caused, and common reinforcing measures for the bridge are difficult to play a role under the action of some extreme natural conditions such as earthquake load.
Research finds that the focus of the current highway bridge specification for bridge designers under the action of transverse overturning stability and extreme earthquake lies on the bending resistance and shearing resistance bearing capacity of the bridge, and under the deformation condition of the bridge under the combined action of various loads and bending moments, under the action of eccentric accidental overload and under the action of extreme conditions, the transverse overturning resistance of the single-column pier bridge in the structure is poor, the structure overturning is closely related to whether the supporting function of the support fails or not and the worst load position, because the support biasing or the support disengaging can cause the redistribution of the support counter force, the vertical pressure of the support exceeds the design strength of the support to cause the support to be damaged, or the support corner deforms excessively to cause the phenomenon of the overturning and sliding of the beam body. The overload load and the eccentric load act on the worst load, which further causes the bridge to overturn. In the existing method, a pier is usually added at a single-column pier position or a capping beam is added at the top of the single-column pier, or a longitudinal and transverse limiting and anti-pulling device is added at the top of the single-column pier (inside an overturning axis), so that the traditional bridge protection device is heavy in weight and generates burden on the pier; the rigid connection is adopted, stress fatigue is generated under the action of repeated load, and when overload load is applied, the anti-pulling device under the stress fatigue has no protection function; the effect and the acting position of each load cannot be accurate, when the load acts on the worst load position, effective protection cannot be achieved, and multiple stresses and bending moments act on the same device, so that the device damage is accelerated.
In order to take effective remedial measures, China is just performing anti-overturning reinforcement on a large number of single-column pier bridges, and the anti-overturning capacity of the bridges is improved. The invention adopts a multi-stage protection method, so that the device can perform common support reinforcement, vibration reduction and energy dissipation on the bridge, and prevent accidental overload and protection under extreme natural conditions.
Disclosure of Invention
The invention aims to provide a method for protecting a bridge anti-vibration and anti-overturning linkage device, which aims to solve the problem that the traditional reinforcing mode can only carry out common reinforcement on the bending resistance and the shearing resistance of a bridge when the traditional reinforcing mode is used, and the reinforcing mode is basically at a pier.
The technical scheme of the invention is realized as follows:
a method for protecting a bridge multistage shockproof and anti-overturning linkage device comprises the following steps:
s1, primary protection, reinforcement and shock absorption: the vehicle load above the bridge deck is in a range (X is bridge length) of 290kN < F < (17.5X +190KN), the air springs and the buffer springs of the ring fixing plates in the anti-vibration supporting device are alternately fixed between the upper ring fixing plate and the lower ring fixing plate, the air pressure value of the air springs is adjusted, so that the anti-vibration supporting device reaches a required pressure value which is 290 KN-17.5X +190KN, and when the resultant load force is 290kN < F < (17.5X +190KN), the pressure value of the air springs meets the supporting requirement and supports the bridge deck.
S2, secondary protection energy conversion and dissipation: the vehicle load above the bridge floor is in a range (X is bridge length) of 290kN < F < (17.5X +190KN), the bridge floor vibrates up and down to generate vibration waves, a first shell in the vibration reduction supporting device does reciprocating motion along with the bridge floor, a first upper shell drives a rotating rod to rotate through a spiral ferrule, the rotating rod drives a first linkage rod at the lower end, the first linkage rod drives a gear set to rotate through a hollow circular truncated cone, the gear set amplifies kinetic energy transmitted by the bridge floor, the kinetic energy is transmitted to a generator through a middle shaft gear, and the generator converts the kinetic energy into electric energy for the pressure indicator to work.
S3, tertiary protection overload lower support: when the vehicle load above the bridge floor is in the range of (17.5X +190KN) < F (X is the bridge length), the bridge floor of the bridge has a corner, the supporting capacity of a bridge support is greatly reduced, when the corner is 0.02 rad-0.03 rad, the mercury switch I and the mercury switch II deflect along with the bridge floor, the circuit is closed, and the electromagnetic supporting device I in the middle part of the bridge and the electromagnetic supporting device II in the cable-stayed supporting device work in the following mode;
the method comprises the following steps: the inner walls of the upper shell II and the lower shell II are embedded through bayonets, the upper shell II and the lower shell II are symmetrically distributed up and down along a middle fixing cover, a permanent magnet I is fixed in the middle fixing cover, on the overload side of a bridge deck vehicle and on the downward inclined side of the bridge deck, the magnetic poles generated by the electromagnetic box in the electromagnetic support device I are the same as the permanent magnet I, the electromagnetic box generates repulsive force to push the permanent magnet I, the permanent magnet I pushes the electromagnetic box at the upper part, the generated repulsive force is transmitted to the bridge deck through the upper shell II to prevent the bridge deck from sinking down, and the bridge deck is supported upwards,
step two: the cylindrical solid steel II in the magnetic support device II is fixed through a sliding rail, the permanent magnet II is placed in the circular base, the permanent magnet II repels the cylindrical solid steel II along with the closing of the mercury switch II on the overload side of the bridge deck vehicle, the cylindrical solid steel II repels the permanent magnet II on the upper part, the permanent magnet pushes the circular base to support the bridge deck,
step three: on one inclined side of the bridge floor, the magnetic poles generated by the electromagnetic box in the electromagnetic supporting device I are different from those of the permanent magnet I, the electromagnetic box generates suction force to attract the permanent magnet I downwards, the permanent magnet I attracts the upper part of the electromagnetic box, the generated suction force is transmitted to the bridge floor through the upper shell II to resist the drawing action of the bridge floor, the permanent magnet II in the electromagnetic supporting device II attracts the cylindrical solid steel II, the cylindrical solid steel II attracts the upper part of the permanent magnet II, the permanent magnet attracts the circular base to pull the bridge floor to resist the drawing action,
s4, quaternary protection contingency prevention: when the pressure is greater than the actual bearing value, the pressure value of the air spring can be set, when the pressure applied by the load is greater than the set pressure value, the air spring can admit air, the pressure value of the air spring is increased, the electromagnetic valve (the pressure value can be set according to the regional condition) is opened, the air storage bin transports the air into the hollow circular ring through the first guide pipe and further enters the air spring through the second guide pipe, the pressure bearing capacity of the air spring is enhanced, and support is provided under the extreme condition.
Furthermore, the upper shell and the lower shell of the first electromagnetic supporting device are connected to the bridge floor through bolts, the cylindrical solid steel I with the coil is fixed inside the upper electromagnetic box and the lower electromagnetic box, the cylindrical solid steel I is made of iron-aluminum alloy, the inner coils are copper coils, the number of turns is 3000-shaped steel 7000, the diameter is 100-shaped steel 300mm, the lower portion of the cylindrical solid steel lower electromagnetic box is provided with a round hole slightly smaller than the cylindrical solid steel I, and the upper portion of the electromagnetic box is provided with a rectangular hole.
The outer layers of the first mercury switch and the second mercury switch are organic glass thin shells and are V-shaped, a mercury ball is arranged at the bottom of the V shape, leads on two sides of the upper portion of the mercury ball are connected with a circuit, the included angle between each side and the horizontal plane is 0.02 rad-0.03 rad, and the first mercury switch and the second mercury switch are arranged perpendicular to the bottom of the bridge floor.
Furthermore, a first mercury switch control circuit is connected with a first electromagnetic supporting device, a second mercury switch control circuit is connected with a second electromagnetic supporting device, the deflection amplitude of the bridge and the current direction in the direction control circuit are controlled, the first mercury switch is connected with the first single electromagnetic supporting device, the second mercury switch is connected with the second single electromagnetic supporting device, the first electromagnetic supporting device and the second electromagnetic supporting device on the two sides of the bridge are opposite in connecting circuit, when the bridge is overturned and deflected by 0.02 rad-0.03 rad, the first mercury switch and the second mercury switch deflect, and the circuit is closed to work.
Furthermore, the number of layers of the middle ring fixing plate of the diagonal bracing device is not less than three, a ring hollow ring channel is arranged in the ring fixing plate, a second guide pipe is fixed on the lower side of the hollow ring channel and connected with an air spring, and the air spring and the buffer spring alternately appear between the ring fixing plates.
Further, the cylindrical solid steel II in the diagonal bracing device is fixed with the interior of the rigid cylinder through a sliding rail, a coil is wound on the outer surface of the steel magnet, the iron core is made of iron-aluminum alloy, the inner coil is made of copper coil, the iron core is made of iron-aluminum alloy, the number of turns is 5000 + 10000, the diameter is 200 + 400mm, and the coil is connected with a mercury switch II.
The invention provides a method for protecting a bridge multistage shockproof and anti-overturning linkage device, which has the following beneficial effects:
1. the invention discloses a method for protecting a multistage shockproof and anti-overturning linkage device of a bridge, which realizes four-stage protection of the bridge.
2. The invention provides a circuit diagram and a control method, realizes the selective work of each device, improves the bridge protection efficiency, avoids the stress fatigue of each device under various load actions all the time, and better realizes the multi-stage protection of bridge overturn resistance.
3. The invention can automatically judge the compression area and the tension area of the bridge according to different deflection directions of the bridge floor, provide thrust in the compression area, provide tension in the compression area, accurately provide effective support, resist drawing action and prevent the bridge from overturning.
4. The electromagnetic control principle is adopted, so that the device can provide different supporting forces in the process of changing in the face of different load collection amounts according to actual supporting protection requirements, and the supporting effect under the overload condition is realized.
5. The invention can determine the worst load position according to various physical aggregate quantities, accurately determine the optimal position of the bridge support and improve the support efficiency.
According to the protection method of the bridge multistage anti-vibration and anti-overturning linkage device, linkage among devices is realized through the load effect of the upper part of the bridge and a circuit diagram, all mechanisms selectively work under the condition that the bridge faces repeated load, overload load and natural disaster, multistage protection in the bridge overturning process is realized, and the accuracy and the efficiency of the bridge anti-vibration and anti-overturning are improved.
Drawings
FIG. 1 is a flow chart of a guarding method of the invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic sectional front view of the vibration damping support device of the present invention;
FIG. 4 is a schematic top view of the gear assembly of the present invention;
FIG. 5 is a schematic cross-sectional front view of a first electromagnetic supporting device of the present invention;
FIG. 6 is a schematic sectional side view of a first electromagnetic supporting device in the vibration damping support according to the present invention;
FIG. 7 is a schematic top view of a first electromagnetic supporting device of the present invention; (ii) a
FIG. 8 is a schematic view of the damping spring of the present invention;
FIG. 9 is a schematic side view of the present invention;
FIG. 10 is a schematic view of a cable-stayed support device according to the present invention
FIG. 11 is a schematic cross-sectional view of a cable-stayed support device according to the present invention;
FIG. 12 is a schematic view of a ring fixing plate of the electromagnetic supporting device of the present invention;
FIG. 13 is a schematic view of the placement of an air spring and a damping spring of the present invention;
FIG. 14 is a schematic circuit control diagram of the electromagnetic supporting device of the present invention;
FIG. 15 is a schematic diagram of a second circuit control of the electromagnetic supporting device of the present invention.
Reference numbers in the figures: the device comprises a bridge floor 1, a single bridge pier 2, a rigid extension plate 3, a vibration damping support device 4, an electromagnetic support device I5, a cable-stayed support device 6, a mercury switch I7, a mercury switch II 8, a hydraulic rod 9, an upper shell I401, a lower shell I402, a buffer spring I403, a fixed plate I404, a rotating wheel 405, a rotating rod 406, a spiral ferrule 407, a buffer spring II 408, a jogged joint 409, a linkage rod I410, a gear set 411, a fixed plate III 412, a generator 413, a fixed plate II 414, a linkage rod II 415, an electricity storage box 416, a hollow circular truncated cone 417, a pressure indicator 418, a peripheral large gear ring 4111, an internal gear 4112, a middle shaft gear 4113, a gear fixed support 4114, an upper shell II 501, a lower shell II 502, a middle fixed cover 503, an electromagnetic box 504, a cylindrical solid steel I505, a permanent magnet I506, a circular clamp 507, a circular hole II 508, a connecting rod I509, a rectangular hole, The air spring comprises a first round hole 513, a second rectangular hole 514, a plug pin 515, a first magnetic isolation layer 516, a first coil 517, a second connecting rod 518, a damping spring 519, an isolating membrane 520, a first cushion pad 521, a shock-proof supporting device 61, a second electromagnetic supporting device 62, a round base 601, a rigid cylinder 602, a third cushion spring 603, a second permanent magnet 604, a second cylindrical solid steel 605, a ring fixing plate 606, a first guide pipe 607, an electromagnetic valve 608, a gas storage bin 609, a sliding rail 610, a second cushion pad 611, a second coil 612, a hollow ring 613, a second guide pipe 614, a channel 615 and an air spring 616.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being 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.
Referring to fig. 1-15, a multistage bridge anti-shock and anti-overturning linkage device comprises a bridge floor 1 and single bridges 2, wherein the single bridges 2 are arranged at the bottom of the bridge floor 1 at equal intervals, rigid extension plates 3 are fixedly connected to two sides of each single bridge 2 respectively, a vibration damping supporting device 4 and an electromagnetic supporting device I5 are arranged between the top side of each rigid extension plate 3 and the bottom side of the bridge floor 1, the vibration damping supporting device 4 is positioned on one side, far away from the single bridge piers 2, of each electromagnetic supporting device I5, a cable-stayed supporting device 6 is arranged between the single bridge 2 and the bottom side edge position of the bridge floor 1, the top end of each cable-stayed supporting device 6 is positioned vertically above the middle position of two adjacent single bridge piers 2, and a mercury switch I7 and a mercury switch II 8 are arranged on the bottom side of the;
the vibration damping supporting device 4 comprises an upper shell I401, a lower shell I402, a buffer spring I403, a fixing plate I404, a rotating wheel 405, a rotating rod 406, a spiral ferrule 407, a buffer spring II 408, a jogged joint 409, a linkage rod I410, a gear set 411, a fixing plate III 412, a generator 413, a fixing plate II 414, a linkage rod II 415, a power storage box 416, a hollow circular truncated cone 417 and a pressure indicator 418, wherein the top of the upper shell I401 and the bottom of the lower shell I402 are respectively fixedly connected with the bottom of the bridge floor 1 and one side of the rigid extension plate 3, the upper shell I401 and the lower shell I402 are nested with each other, the upper shell I401 has a certain thickness, the inner wall is irregular, the rotating rod 406 and the inner wall of the upper shell I401 are meshed with each other through the spiral ferrule 407, the upper end of the buffer spring I403 is welded with the inner wall of the upper shell I401, the, the rotating rod 406 is fixedly connected with the first fixing plate 404 through the rotating wheel 405, the spiral ferrule 407 is fixedly connected with the inner side of the first upper housing 401, the second buffer spring 408 is arranged at two sides of the lower part of the spiral ferrule 407, the bottom of the second buffer spring 408 is fixedly connected with the outer wall of the first lower housing 402, the spiral ferrule 407 is in threaded connection with the rotating rod 406, the rotating rod 406 is fixedly connected with the first linkage rod 410 through the embedded head 409, the lower end of the first linkage rod 410 is fixedly connected with a hollow circular table 417, the gear set 411 comprises a peripheral large gear ring 4111, an internal gear 4112, a middle shaft gear 4113 and a gear fixing support 4114, the hollow circular table 417 is welded with the peripheral large gear ring 4111, the gear fixing support 4114 is welded on the upper surface of the second fixing plate 414, the gear set 411 is fixed on the second fixing plate 414 through the gear fixing support 4114, the lower bottom surface of the, an internal gear 4112 is fixed on a gear fixing support 4114, the internal gear 4112 is meshed with one central shaft gear 4113, the central shaft gear 4113 is fixed to the upper end of a linkage rod II 415, the lower end of the linkage rod II 415 is connected with a generator 413, the upper portion of the linkage rod II 415 is formed in a way that the central shaft gear 4113 is embedded in the middle of the internal gear 4112, the generator 413 is connected with a lower shell I402 through bolts, and a fixing plate III 412 is fixedly connected with the inner wall of the lower shell I402;
the electromagnetic supporting device I5 comprises an upper shell II 501, a lower shell II 502, a middle fixing cover 503, an electromagnetic box 504, a permanent magnet I506, a connecting rod I509, a rectangular hole I510, a magnetic isolating layer II 512 and a connecting rod II 518, wherein the upper shell II 501 is fixed on the bottom surface of a bridge, the lower shell II 502 is fixed on a rigid extension plate 3, the upper shell II 501 and the lower shell II 502 are symmetrically distributed around the middle fixing cover 503, the electromagnetic box 504 is fixedly installed inside the upper shell II 501 and the lower shell II 502, a bayonet 511 is arranged between the electromagnetic box 504 and the inner wall of the upper shell II 501, a cylindrical solid steel I505, a magnetic isolating layer I516 and a coil I517 are fixedly installed inside the electromagnetic box 504, the cylindrical solid steel I505 is vertically fixed on the upper inner wall and the lower inner wall of the electromagnetic box 504, circular clamps 507 are arranged on the upper inner wall and the lower inner wall of the electromagnetic box 504, the upper inner wall and the lower inner wall of the electromagnetic box 504 are fixed by the upper circular clamps, the first cylindrical solid steel 505 is arranged at equal intervals, the first round hole 513 is formed in the middle of the outer wall of the second lower shell 502, the second round hole 508 with the diameter smaller than that of the first cylindrical solid steel 505 is formed in the lower portion of the electromagnetic box 504, the second rectangular hole 514 is formed in the top bottom of the electromagnetic box 504, the N stage and the S stage of the electromagnetic box 504 are controlled through the first mercury switch 7, the first mercury switch 7 is connected with the electromagnetic box 504 through the first round hole 513, the first permanent magnet 506 is arranged in the middle fixing cover 503, the two permanent magnets 506 are arranged, the second magnetic isolating layer 512 is arranged between the two first permanent magnets 506, the first connecting rod 509 is fixedly connected to the four corners of the top side and the bottom side of the middle fixing cover 503, the second connecting rod 518 is arranged on one side of the first connecting rod 509 away from the middle fixing cover 503, the damping spring 519 is arranged between the first connecting rod 509 and the, a second connecting rod 518 is fixedly connected with the bridge deck 1 and the rigid extension plate 3 through a first rectangular hole 510 and a second rectangular hole 514 respectively, bolts 515 are welded on the two side edges of the middle fixing cover 503, and the middle fixing cover 503 is connected with the second upper shell 501 and the second lower shell 502 in a sliding mode through the bolts 515;
the cable-stayed supporting device 6 comprises an anti-seismic supporting device 61 and a second electromagnetic supporting device 62, the anti-seismic supporting device 61 comprises a circular base 601, a rigid cylinder 602, a circular ring fixing plate 606, a third buffer spring 603, an air spring 616, a first hollow circular ring 613 connecting guide pipe 607, an electromagnetic valve 608 and an air storage bin 609, the anti-seismic supporting device 61 is sleeved outside the second electromagnetic supporting device 62, the second electromagnetic supporting device 62 comprises a second permanent magnet 604, a second cylindrical solid steel 605, a second buffer pad 611 and a second coil 612, a slide rail 610 is installed on the inner side of the rigid cylinder 602, the second cylindrical solid steel 605 is slidably connected in the slide rail 610, the rigid cylinder 602 is sleeved and embedded with the circular base 601, the circular ring fixing plate 606 is welded with the rigid cylinder 602, the air spring 616 and the third buffer spring 603 are alternately fixed in the middle of the upper and lower circular ring fixing plates 606, a hollow circular ring 613 is arranged in the, the air spring 616 is fixed with the ring fixing plate 606 through bolts and is connected with the hollow ring 613 through the second guide pipe 614, a channel 615 is formed in one side of the ring fixing plate 606, the hollow ring 613 is connected with the first guide pipe 607 through the channel 615, the first guide pipe 607 is connected with the gas storage bin 609, the second permanent magnet 604 is placed in the circular base 601, the second coil 612 is wound on the outer surface of the second cylindrical solid steel 605, and the generation of electromagnetism is controlled through the second mercury switch 8.
S1, primary protection, reinforcement and shock absorption: the vehicle load above the bridge deck 1 is the bridge length within the range X of 290kN < F < (17.5X +190KN), the air springs 616 of the circular ring fixing plates 606 and the buffer springs 603 in the anti-vibration supporting device 61 are alternately fixed between the upper circular ring fixing plate 606 and the lower circular ring fixing plate 606, the air pressure value of the air springs 616 is adjusted, so that the anti-vibration supporting device 61 reaches the required pressure value, the pressure value is 290 KN-17.5X +190KN, and when the resultant load force is 290kN < F < (17.5X +190KN), the pressure value of the air springs 616 meets the supporting requirement, and the bridge deck 1 is supported.
S2, secondary protection energy conversion and dissipation: the vehicle load above the bridge floor 1 is the bridge length in the range X of 290kN < F < (17.5X +190KN), the bridge floor 1 vibrates up and down to generate vibration waves, a first shell 401 in the vibration reduction supporting device 4 does reciprocating motion along with the bridge floor 1, the first upper shell 401 drives a rotating rod 406 to rotate through a spiral ferrule 407, the rotating rod 406 drives a first linkage rod 410 at the lower end, the first linkage rod 410 drives a gear set 411 to rotate through a hollow circular truncated cone 417, the gear set 411 amplifies the kinetic energy transmitted by the bridge floor 1 and transmits the kinetic energy to a generator 413 through a middle shaft gear 4113, and the generator 413 converts the kinetic energy into electric energy for the pressure indicator 418 to work.
S3, tertiary protection overload lower support: the vehicle load above the bridge floor 1 is when (17.5X +190KN) < F scope X is long-term for the bridge, and the corner appears in bridge floor 1, and bridge beam supports support ability greatly reduces, and the corner is when 0.02rad ~ 0.03rad, and mercury switch one 7, mercury switch two 8 deflect along with bridge floor 1, and the circuit is closed, and the electromagnetism strutting arrangement two 62 among the electromagnetism strutting arrangement 4 and the oblique pull strutting arrangement 6 of bridge mid portion work according to following mode:
the method comprises the following steps: the inner walls of the electromagnetic box 504, the upper shell II 501 and the lower shell II 502 in the electromagnetic supporting device I5 are embedded through bayonets 511, the upper shell II 501 and the lower shell II 502 are vertically and symmetrically distributed along the middle fixing cover 503, a permanent magnet I506 is fixed in the middle fixing cover 503, on the overload side of a bridge deck vehicle and on the downward inclined side of the bridge deck, a magnetic pole generated by the electromagnetic box 504 in the electromagnetic supporting device I5 is the same as the permanent magnet I506, the electromagnetic box 504 generates a repulsive force to push the permanent magnet I506, the permanent magnet I506 pushes the electromagnetic box 504 at the upper part, and the generated repulsive force is transmitted to the bridge deck 1 through the upper shell II 501 to prevent the bridge deck 1 from sinking and upwards support the bridge deck 1;
step two: the cylindrical solid steel II 605 in the second magnetic supporting device 9 is fixed through a sliding rail 610, the permanent magnet II 604 is placed in the circular base 601, the cylindrical solid steel II 605 in the second electromagnetic supporting device 62 repels the cylindrical solid steel II 605 along with the closing of the mercury switch II 8 on the overload side of the bridge deck vehicle, the cylindrical solid steel II 605 repels the upper part of the permanent magnet II 604, and the permanent magnet II 604 pushes the circular base 601 to support the bridge deck;
step three: on one inclined side of the bridge floor 1, magnetic poles generated by an electromagnetic box 504 in an electromagnetic supporting device I5 are different from a permanent magnet I506, the electromagnetic box 504 generates attraction force to attract the permanent magnet I506 downwards, the permanent magnet I attracts the electromagnetic box 504 on the upper portion, the generated attraction force is transmitted to the bridge floor 1 through an upper shell II 501 to resist the drawing effect of the bridge floor 1, a permanent magnet II 604 in an electromagnetic supporting device II 62 attracts a cylindrical solid steel II 605, the cylindrical solid steel II 605 attracts the permanent magnet II on the upper portion, and the permanent magnet attracts a circular base 601 to pull the bridge floor 1 to resist the drawing effect;
s4, quaternary protection contingency prevention: when the pressure is greater than the actual bearing value, F is greater than 17.5X +190KN, the pressure value of the air spring 616 can be set, when the pressure applied by the load is greater than the set pressure value, the air spring 616 can intake air, the pressure value of the air spring 616 is increased, the electromagnetic valve 608 can be opened according to the set pressure value of the regional situation, the air storage bin 609 conveys the air into the hollow ring 613 through the first guide pipe 607 and further enters the air spring 616 through the second guide pipe 614, the bearing capacity of the air spring 616 is enhanced, and support is provided under the extreme situation.
The upper shell and the lower shell of the first electromagnetic supporting device 5 are connected to the bridge floor through bolts, a first cylindrical solid steel 505 with a coil is fixed inside the upper electromagnetic box 504 and the lower electromagnetic box 504, the first cylindrical solid steel 505 is made of iron-aluminum alloy, the inner coils are copper coils, the number of turns is 3000-7000, the diameter is 100-300mm, a round hole slightly smaller than the first cylindrical solid steel is formed in the lower portion of the electromagnetic box below the first cylindrical solid steel 505, and a rectangular hole is formed in the upper portion of the electromagnetic box 504, so that the first cylindrical solid steel 505 can slide, current is efficiently transmitted, and attraction force and repulsion force are generated.
The outer layers of the first mercury switch 7 and the second mercury switch 8 are organic glass thin shells and are V-shaped, mercury balls are arranged at the bottom of the V shape, conducting wires on two sides of the upper portion of the mercury balls are connected with a circuit, each side and the horizontal included angle is 0.02 rad-0.03 rad, and the mercury switches are arranged perpendicular to the bottom of the bridge floor so that mercury can slide in the V-shaped organic glass thin shells when the bridge floor deflects, and then the circuit is closed.
The first mercury switch 7 control circuit is connected with the first electromagnetic supporting device 5, the second mercury switch 8 control circuit is connected with the second electromagnetic supporting device 62, the deflection amplitude of the bridge and the current direction in the direction control circuit are passed, the first mercury switch 7 is connected with the first single electromagnetic supporting device 5, the second mercury switch 8 is connected with the second single electromagnetic supporting device 62, the first electromagnetic supporting device 5 and the second electromagnetic supporting device 62 on the two sides of the bridge are opposite in connecting circuit, when the bridge is overturned and deflects by 0.02 rad-0.03 rad, the first mercury switch 7 and the second mercury switch 8 deflect, and the circuit is closed to work, so that different inclined sides of the bridge generate different acting forces.
The number of layers of the middle ring fixing plate 606 of the cable-stayed supporting device 6 is not less than three, a hollow ring 613 channel is arranged in the ring fixing plate 606, a second guide pipe 614 is fixed on the lower side of the hollow ring 613 channel and connected with an air spring 065, and the air springs 616 and a third buffer spring 603 are alternately arranged between the ring fixing plates, so that the cable-stayed supporting device 6 can gradually absorb energy to play a role in buffering and shock absorption.
The second cylindrical solid steel 605 in the diagonal bracing device 6 is fixed with the inside of the rigid cylinder 602 through a sliding rail 610, the outer surface of the second cylindrical solid steel 605 is wound with a coil, the iron core is made of iron-aluminum alloy, the inner coil is made of copper coil, the iron core is made of iron-aluminum alloy, the number of turns is 5000 + 10000, the diameter is 200 + 400mm, and the coil is connected with the mercury switch 10 in the fixing groove, so that the current is efficiently transmitted, and the attraction force and the repulsion force of the electromagnet are generated.
The above description is only for the purpose of illustrating the technical solutions of the present invention, and not for the purpose of limiting the scope of the present invention, and the simple modifications or equivalent substitutions of the technical solutions of the present invention by those skilled in the art can be made without departing from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. A bridge multi-stage shockproof anti-overturning linkage device protection method is characterized by comprising the following steps: it comprises the following steps:
s1, primary protection, reinforcement and shock absorption: the vehicle load above the bridge floor (1) is in the range of 290kN < F < (17.5X +190KN) (X is bridge length), an air spring (616) and a buffer spring III (603) of a ring fixing plate (606) in the anti-vibration supporting device (61) are alternately fixed between an upper ring fixing plate and a lower ring fixing plate (606), the air pressure value of the air spring (616) is adjusted, so that the anti-vibration supporting device (61) reaches a required pressure value, the pressure value is 290 KN-17.5X +190KN, when the load resultant force is 290kN < F < (17.5X +190KN), the pressure value of the air spring (616) meets the supporting requirement, the bridge floor (1) is supported, and only one sentence pitch is arranged in the bridge floor (1)
S2, secondary protection energy conversion and dissipation: the vehicle load above the bridge floor (1) is in the range (X is the bridge length) of 290kN < F < (17.5X +190KN), the bridge floor (1) vibrates up and down to generate vibration waves, a first shell (401) in the vibration reduction supporting device (4) does reciprocating motion along with the bridge floor (1), the first upper shell (401) drives a rotating rod (406) to rotate through a spiral ferrule (407), the rotating rod (406) drives a first linkage rod (410) at the lower end, the first linkage rod (410) drives a gear set (411) to rotate through a hollow circular truncated cone (417), the gear set (411) amplifies kinetic energy transmitted by the bridge floor, the kinetic energy is transmitted to a generator (413) through a middle shaft gear (4113), and the generator (413) converts the kinetic energy into electric energy for a pressure indicator (418) to work;
s3, tertiary protection overload lower support: when the vehicle load above the bridge floor (1) is in the range of (17.5X +190KN) < F (X is the bridge length), the bridge floor (1) of the bridge has a corner, the supporting capacity of a bridge support is greatly reduced, when the corner is 0.02 rad-0.03 rad, a mercury switch I (7) and a mercury switch II (8) deflect along with the bridge floor, a circuit is closed, and an electromagnetic supporting device I (5) in the middle part of the bridge and an electromagnetic supporting device II (62) in a cable-stayed supporting device (6) work in the following modes;
the method comprises the following steps: the inner walls of an electromagnetic box (504) in an electromagnetic supporting device I (5), an upper shell II (501) and a lower shell II (502) are embedded through bayonets (511), the upper shell II (501) and the lower shell II (502) are distributed in an up-and-down symmetrical mode along a middle fixing cover (503), a permanent magnet I (506) is fixed in the middle fixing cover (503), on the overload side of a bridge deck vehicle and on the downward inclined side of the bridge deck, the magnetic poles generated by the electromagnetic box (504) in the electromagnetic supporting device I (5) are the same as those of the permanent magnet I (506), the electromagnetic box (504) generates repulsive force to push the permanent magnet I (506), the permanent magnet I pushes the upper part of the electromagnetic box (504), the generated repulsive force is transmitted to the bridge deck (1) through the upper shell II (501), the bridge deck (1) is prevented from sinking,
step two: the cylindrical solid steel II (605) in the electromagnetic supporting device II (8) is fixed through a sliding rail (610), the permanent magnet II (604) is placed in the circular base (601), the permanent magnet II (604) repels the cylindrical solid steel II (605) at the overload side of the bridge deck vehicle along with the closing of the mercury switch II (8), the cylindrical solid steel II (605) repels the upper part of the permanent magnet II (604) in the electromagnetic supporting device II (62), and the permanent magnet pushes the circular base (601) to support the bridge deck,
step three: on the inclined side of the bridge deck (1), magnetic poles generated by an electromagnetic box (504) in an electromagnetic supporting device I (5) are different from a permanent magnet I (506), the electromagnetic box (504) generates suction force to downwardly attract the permanent magnet I (506), the permanent magnet attracts the electromagnetic box (504) on the upper portion, the generated suction force is transmitted to the bridge deck (1) through an upper shell II (501) to resist the drawing effect of the bridge deck (1), a permanent magnet II (604) in an electromagnetic supporting device II (62) attracts a cylindrical solid steel II (605), the cylindrical solid steel II (605) attracts the permanent magnet II (604) on the upper portion, the permanent magnet attracts a circular base (601) to pull the bridge deck (1) to resist the drawing effect,
s4, quaternary protection contingency prevention: when the pressure is greater than the actual bearing value, F > (17.5X +190KN) can set the pressure value of the air spring (616), when the pressure applied by the load is greater than the set pressure value, the air spring (616) can intake air, the pressure value of the air spring (616) is increased, the electromagnetic valve (608) (which can set the pressure value according to the regional situation) is opened, the air storage bin (609) transports the air into the hollow circular ring (613) through the first guide pipe (607) and further enters the air spring (616) through the second guide pipe (614), the pressure bearing capacity of the air spring (616) is enhanced, and in the extreme case, support is provided.
2. The method for protecting the multistage anti-seismic and anti-overturning linkage device of the bridge as claimed in claim 1, wherein upper and lower shells of the first electromagnetic supporting device (5) are bolted on the bridge deck (1), cylindrical solid steel I (505) with coils is fixed inside the upper and lower electromagnetic boxes (504), the cylindrical solid steel I (505) is made of iron-aluminum alloy, inner coils are copper coils, the number of turns is 3000 + 7000, the diameter is 100 + 300mm, a round hole slightly smaller than the cylindrical solid steel I (505) is formed in the lower portion of the electromagnetic box (504) below the cylindrical solid steel I (505), and a rectangular hole is formed in the upper portion of the electromagnetic box (504).
3. The method for protecting the multistage bridge anti-seismic and anti-overturning linkage device according to claim 1, characterized in that: the outer layers of the first mercury switch (7) and the second mercury switch (8) are organic glass thin shells and are V-shaped, a mercury ball is arranged at the bottom of the V shape, leads on two sides of the upper portion of the mercury ball are connected with a circuit, each edge and the horizontal included angle is 0.02 rad-0.03 rad, and the first mercury switch (7) and the second mercury switch (8) are arranged perpendicular to the bottom of the bridge floor (1).
4. The method for protecting the multistage bridge anti-seismic and anti-overturning linkage device according to claim 1, characterized in that: the control circuit of the first mercury switch (7) is connected with the first electromagnetic supporting device (5), the control circuit of the second mercury switch (8) is connected with the second electromagnetic supporting device (62), the deflection amplitude of the bridge and the current direction in the direction control circuit are controlled, the first mercury switch (7) is connected with the first single electromagnetic supporting device (5), the second mercury switch (8) is connected with the second single electromagnetic supporting device (62), the first electromagnetic supporting device (5) and the second electromagnetic supporting device (62) on the two sides of the bridge are connected with the reverse circuit, when the bridge overturns and deflects by 0.02 rad-0.03 rad, the first mercury switch (7) and the second mercury switch (8) deflect, and the circuit is closed to work.
5. The method for protecting the multistage bridge anti-seismic and anti-overturning linkage device according to claim 1, characterized in that: the number of layers of the middle ring fixing plate (606) of the cable-stayed supporting device (6) is not less than three, a hollow ring (613) channel is arranged in the ring fixing plate (606), a second guide pipe 614 is fixed on the lower side of the hollow ring (613) channel and connected with an air spring (616), and the air spring (616) and a third buffer spring (603) between the ring fixing plates (606) are alternately arranged.
6. The method for protecting the multistage bridge anti-seismic and anti-overturning linkage device according to claim 1, characterized in that: the cylindrical solid steel II (605) in the diagonal bracing device (6) is fixed with the interior of the rigid cylinder (602) through a sliding rail (610), a coil is wound on the outer surface of a steel magnet, an iron core is made of iron-aluminum alloy, an inner coil is a copper coil, the iron core is made of iron-aluminum alloy, the number of turns is 5000-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011222060.XA CN112376398B (en) | 2020-11-05 | 2020-11-05 | Bridge multistage anti-vibration and anti-overturning linkage device protection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011222060.XA CN112376398B (en) | 2020-11-05 | 2020-11-05 | Bridge multistage anti-vibration and anti-overturning linkage device protection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112376398A true CN112376398A (en) | 2021-02-19 |
| CN112376398B CN112376398B (en) | 2022-04-08 |
Family
ID=74578884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011222060.XA Active CN112376398B (en) | 2020-11-05 | 2020-11-05 | Bridge multistage anti-vibration and anti-overturning linkage device protection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112376398B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114717969A (en) * | 2022-05-17 | 2022-07-08 | 中铁建投山西高速公路有限公司 | Pier top vertical temporary constraint method in bridge incremental launching construction period |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012112188A (en) * | 2010-11-25 | 2012-06-14 | Takenaka Komuten Co Ltd | Floor structure |
| WO2015137460A1 (en) * | 2014-03-14 | 2015-09-17 | 住友電気工業株式会社 | Air spring |
| CN106087704A (en) * | 2016-06-28 | 2016-11-09 | 杜桂菊 | Single column pier bridge antidumping system |
| CN106760843A (en) * | 2016-12-14 | 2017-05-31 | 广州大学 | A kind of three-dimensional isolation device based on electromagnetic suspension |
| CN206841438U (en) * | 2017-06-07 | 2018-01-05 | 兰州交通大学 | A kind of train damping device based on multi-stage gear |
| CN208884346U (en) * | 2018-10-10 | 2019-05-21 | 古俊 | A kind of bridge pad protective device |
-
2020
- 2020-11-05 CN CN202011222060.XA patent/CN112376398B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012112188A (en) * | 2010-11-25 | 2012-06-14 | Takenaka Komuten Co Ltd | Floor structure |
| WO2015137460A1 (en) * | 2014-03-14 | 2015-09-17 | 住友電気工業株式会社 | Air spring |
| CN106087704A (en) * | 2016-06-28 | 2016-11-09 | 杜桂菊 | Single column pier bridge antidumping system |
| CN106760843A (en) * | 2016-12-14 | 2017-05-31 | 广州大学 | A kind of three-dimensional isolation device based on electromagnetic suspension |
| CN206841438U (en) * | 2017-06-07 | 2018-01-05 | 兰州交通大学 | A kind of train damping device based on multi-stage gear |
| CN208884346U (en) * | 2018-10-10 | 2019-05-21 | 古俊 | A kind of bridge pad protective device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114717969A (en) * | 2022-05-17 | 2022-07-08 | 中铁建投山西高速公路有限公司 | Pier top vertical temporary constraint method in bridge incremental launching construction period |
| CN114717969B (en) * | 2022-05-17 | 2024-02-20 | 中铁建投山西高速公路有限公司 | Temporary constraint method for pier top vertical in bridge pushing construction period |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112376398B (en) | 2022-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201851582U (en) | High-damping anti-overturning composite shock isolation support | |
| CN201843071U (en) | Pull rope and stop block combined limiting anti-seismic supporting seat | |
| CN112376398B (en) | Bridge multistage anti-vibration and anti-overturning linkage device protection method | |
| CN111236285B (en) | Disconnect-type basis with subtract shock insulation function | |
| CN113958014A (en) | Self-adaptive variable-rigidity three-dimensional shock isolation/vibration device | |
| CN112458874B (en) | Multistage shockproof antidumping aggregate unit of bridge | |
| CN202347435U (en) | Inhaul cable-spring shock mount | |
| CN114439123A (en) | Vertical tensile sliding shock isolation device | |
| CN113389996A (en) | Support convenient to go up and down and remove | |
| CN211548196U (en) | Steel plate concrete shear wall with strong edge member | |
| CN109881784B (en) | Cambered surface sliding type three-dimensional shock insulation support | |
| CN115387494A (en) | Three-dimensional shock insulation rubber support capable of being used for shock and vibration double control | |
| CN213038986U (en) | Magnetic suspension technology-based quakeproof component for historic building | |
| CN104196144A (en) | Separating sliding anti-tension device for isolation bearing | |
| CN111155362B (en) | Floating slab track unit | |
| CN112343198A (en) | Civil engineering antidetonation structure | |
| CN108222628B (en) | Inter-column energy consumption and shock absorption device for silo | |
| CN214061310U (en) | Shock attenuation supports reinforcing apparatus for bridge | |
| CN217306266U (en) | Vibration isolation connection structure between oil conservator bracket and oil tank cover | |
| CN215054221U (en) | Novel energy dissipation wall shock-absorbing structure | |
| CN220287407U (en) | Novel friction energy consumption guiding device applied to boiler-steel structure | |
| CN212612417U (en) | Buffering shock attenuation building foundation pile structure | |
| CN216921581U (en) | Three-dimensional multistage vibration isolation device with inertial container and friction pendulum | |
| CN218758061U (en) | Three-dimensional friction pendulum isolation bearing of tandem type | |
| CN113250231B (en) | Anti-pulling damping device of independent foundation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |