CN111321677B - Bridge support capable of being partially replaced and replacement method - Google Patents
Bridge support capable of being partially replaced and replacement method Download PDFInfo
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- CN111321677B CN111321677B CN202010352548.8A CN202010352548A CN111321677B CN 111321677 B CN111321677 B CN 111321677B CN 202010352548 A CN202010352548 A CN 202010352548A CN 111321677 B CN111321677 B CN 111321677B
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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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- 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
- E01D19/041—Elastomeric bearings
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Abstract
The invention discloses a bridge bearing capable of being partially replaced, which comprises a supporting mechanism, a bridge fixing mechanism and a pier fixing mechanism, wherein the upper end of the supporting mechanism is provided with the bridge fixing mechanism, the lower end of the supporting mechanism is provided with the pier fixing mechanism, a protection box, a main supporting core, a guide rail and a stainless steel plate are connected through lengthened locking bolts, when one of the parts is damaged, only the lengthened locking bolts need to be unscrewed, then the damaged part is partially replaced without integral replacement, the maintenance cost is greatly reduced, a sliding groove B, a polytetrafluoroethylene plate, an intermediate steel lining plate, a pressure-bearing rubber plate and a sealing ring are arranged inside the main supporting core, the outer surface of the pressure-bearing rubber plate is wrapped with the sealing ring, the sealing ring is a member made of polyurethane materials, the sealing ring has good waterproof performance and can prevent rainwater from corroding the pressure-bearing rubber plate, the service life of the pressure-bearing rubber plate is prolonged, and the working cost is reduced.
Description
Technical Field
The invention relates to the technical field of bridge maintenance, in particular to a bridge support capable of being partially replaced and a replacement method.
Background
The bridge is a large structure for crossing obstacles, in particular to a structure for crossing natural obstacles or artificial obstacles by traffic routes or other facilities, the bridge support is an important structural component for connecting an upper structure and a lower structure of the bridge, is positioned between the bridge and a cushion stone, can reliably transmit load and deformation (displacement and corner) born by the upper structure of the bridge to the lower structure of the bridge, is an important force transmission device of the bridge, and comprises a fixed support and a movable support, and the common support form of bridge engineering comprises the following components: felt or flat supports, plate rubber supports, ball supports, steel supports, special supports and the like.
Present bridge beam supports all is a unified whole, when one of them certain position takes place to damage, need with its whole change, cost of maintenance is higher, the practicality is lower, secondly bury in the middle of the bridge concrete during some positions, will be broken with the concrete when needing the maintenance, holistic bridge beam supports needs broken concrete great, it is great to bridge structures influence, and the main tributary props the life of core shorter, the maintenance number of times that brings is just more, it is comparatively troublesome to bridge maintenance personnel.
Aiming at the problems, the prior art is improved, and a bridge support capable of being partially replaced and a replacement method are provided.
Disclosure of Invention
The invention aims to provide a bridge bearing capable of being partially replaced and a replacement method, wherein a protection box, a main support core, a guide rail and a stainless steel plate are connected through lengthened locking bolts, the bridge bearing is convenient to maintain, which part is replaced when being damaged, the pertinence is strong, the replacement cost is low, an embedded steel plate A is composed of a first steel plate and a second steel plate, only the corresponding place needs to be crushed when bridge concrete is crushed, the crushing time is reduced, the damage rate of a bridge structure is reduced, a sealing ring is wrapped on the outer surface of a pressure-bearing rubber plate, the sealing ring is a member made of polyurethane materials, the waterproof performance is good, the pressure-bearing rubber plate is prevented from being damaged due to the influence of water, the service life of the whole is prolonged, and the problems in the background technology are solved.
In order to achieve the purpose, the invention provides the following technical scheme: a bridge bearing capable of being partially replaced comprises a supporting mechanism, a bridge fixing mechanism and a pier fixing mechanism, wherein the upper end of the supporting mechanism is provided with the bridge fixing mechanism, the lower end of the supporting mechanism is provided with the pier fixing mechanism, the supporting mechanism comprises a protection box and a main supporting core, the bridge protection device comprises a guide rail, a stainless steel plate and an elongated locking bolt, wherein a main supporting core is arranged inside a protection box, the upper surface of the main supporting core is provided with the guide rail, the outer surface of the guide rail is provided with a threaded through hole, the upper surface of the guide rail is provided with a stainless steel plate, the lower bottom surface of the stainless steel plate is provided with a sliding chute A, the groove surface of the sliding chute A is provided with a connecting hole, the elongated locking bolt is arranged inside the main supporting core, the guide rail and the stainless steel plate, passes through the connecting hole and the threaded through hole to be connected with the main supporting core, the upper surface of the stainless steel plate is provided with a bridge fixing mechanism, and the lower bottom surface of the protection box is provided with a bridge pier fixing mechanism;
the bridge fixing mechanism comprises an embedded steel plate A, an upper support plate and an upper anchoring bolt, the upper support plate is arranged on the lower bottom surface of the embedded steel plate A, the upper anchoring bolt is arranged on the upper surface of the embedded steel plate A, and the embedded steel plate A is connected with the lower bottom surface of the bridge through the upper anchoring bolt;
the pier fixing mechanism comprises an embedded steel plate B and a lower anchoring bolt, the lower anchoring bolt is arranged on the lower bottom surface of the embedded steel plate B, a thread pore is formed in the upper surface of the embedded steel plate B, and the embedded steel plate B is connected with the upper surface of the pier through the lower anchoring bolt.
Furthermore, a connecting piece is arranged on the outer surface of the protection box, a locking bolt is fixedly mounted on the outer surface of the protection box, an extrusion block is arranged inside the protection box, the protection box is connected with the embedded steel plate B through the connecting piece, and the locking bolt penetrates through the protection box and is connected with the extrusion block.
Further, the main tributary props the core and includes spout B, the polytetrafluoroethylene board, middle steel liner board, pressure-bearing rubber board and sealing washer, the upper surface that the main tributary propped the core is provided with spout B, be provided with the fixed orifices on spout B's the groove face, the polytetrafluoroethylene board, middle steel liner board, pressure-bearing rubber board and sealing washer all set up the inside at the main tributary props the core, polytetrafluoroethylene board fixed mounting is at the upper surface of middle steel liner board, middle steel liner board fixed mounting is at the upper surface of pressure-bearing rubber board, the parcel has the sealing washer on the surface of pressure-bearing rubber board.
Further, pre-buried steel sheet A includes first steel sheet and second steel sheet, and the one end of first steel sheet is provided with the second steel sheet, and fixed mounting has the magnetic stripe on pre-buried steel sheet A's the lower bottom surface, is provided with spout C on the lower bottom surface of upper bracket board, and the upper surface of upper bracket board is provided with the magnetic channel, and the upper bracket board passes through spout C and guide rail swing joint, and the upper bracket board passes through the magnetic channel and the magnetic stripe is connected with pre-buried steel sheet A magnetism.
Further, one side of first steel sheet is provided with the bolt hole, and the one end in bolt hole is provided with erects the groove, and one side of second steel sheet is provided with the bolt and perforates, and the fenestrate inside of bolt is provided with movable steel pin, and the one end of movable steel pin is provided with the separation blade, and the other end is provided with hexagon socket nut, and movable steel pin passes the bolt and perforates and erect the groove and be connected.
Furthermore, the main support core is connected with the guide rail through a sliding groove B, the stainless steel plate is connected with the guide rail through a sliding groove A, and the fixing hole, the threaded through hole and the connecting hole are all arranged in the same vertical plane.
Further, the sealing ring is a member made of a polyurethane material.
The invention provides another technical scheme that: the method for replacing the bridge bearing capable of being partially replaced comprises the following steps:
s1: when the embedded steel plate A21 is damaged, the bridge needs to be broken by a slotting tool to take out the damaged embedded steel plate A21, the embedded steel plate A21 is composed of a first steel plate 211 and a second steel plate 212, one of the damaged embedded steel plates is taken out without taking out the whole embedded steel plate A, after a new embedded steel plate A21 is installed, the embedded steel plate A is blocked by cement, and epoxy mortar is filled between the upper anchor bolt 23 and the cement;
s2: when the stainless steel plate 14 is damaged, firstly, the bridge is slightly separated from the bridge pier by using an external hydraulic jack, if the whole placing time is long, dust and sand between the upper support plate 22 and the stainless steel plate 14 need to be swept clean by using air flow generated by an air pump, the dust and the sand are prevented from being blocked in the extraction process, then, the lengthened locking bolt 15 is unscrewed, the stainless steel plate 14 is taken down through the sliding of the sliding groove A141, and the lengthened locking bolt 15 is screwed in after a new stainless steel plate is replaced, so that the replacement is completed;
s3: when the main supporting core 12 is damaged, firstly, the locking bolt 112 needs to be loosened, the extrusion block 113 is separated from the supporting core 12, then the lengthened locking bolt 15 is unscrewed, the main supporting core 12 is taken out, if the main supporting core 12 is deformed, the extrusion block 113 is used for loosening back and forth, the main supporting core 12 is peeled off from the main supporting core, and the replacement is completed;
s4: when the embedded steel plate B31 is damaged, the bridge is slightly separated from the bridge pier by using an external hydraulic jack, the protection box 11, the main support core 12, the guide rail 13 and the stainless steel plate 14 are all taken out, temporary support objects are replaced to prevent the hydraulic jack from causing danger due to failure, the surface of the bridge pier is broken by using a cutting tool, the embedded steel plate B31 is taken out by taking the embedded steel plate B31 according to the principle of minimum breaking area, new embedded steel plates are replaced, cement is used for plugging, the protection box 11, the main support core 12, the guide rail 13 and the stainless steel plate 14 are placed after cement is completely molded, the position is adjusted, and replacement is completed;
s5: after each part is replaced, the whole is placed between the bridge and the pier, the hydraulic jack is taken out, the state of the hydraulic jack is noticed at any time in the whole replacement process, and accidents caused by faults of the hydraulic jack are prevented from happening.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention provides a bridge bearing capable of being partially replaced and a replacement method, wherein a protection box, a main support core, a guide rail and a stainless steel plate are connected through an elongated locking bolt, when one part is damaged, the elongated locking bolt is only required to be unscrewed, then the damaged part is partially replaced without integral replacement, the maintenance cost is greatly reduced, secondly, an embedded steel plate A is composed of a first steel plate and a second steel plate, one side of the first steel plate is provided with a bolt hole, one end of the bolt hole is provided with a vertical groove, one side of the second steel plate is provided with a bolt through hole, a movable steel pin is arranged inside the bolt through hole, one end of the movable steel pin is provided with a baffle plate, the other end of the movable steel pin is provided with an inner hexagon nut, the movable steel pin penetrates through the bolt through hole to be connected with the vertical groove, the baffle plate is connected with the vertical groove by rotating the movable steel pin, and the effect of mutual fixation is achieved, and the movable steel pin is a component made of a steel structure, is not easy to rust, and can be taken out easily after a long time, and when the embedded steel plate A is partially damaged, only the corresponding concrete needs to be chiseled, so that the damage degree of the bridge structure is greatly reduced.
2. The invention provides a bridge bearing capable of being partially replaced and a replacement method, wherein a connecting sheet is arranged on the outer surface of a protection box, a locking bolt is fixedly arranged on the outer surface of the protection box, an extrusion block is arranged inside the protection box, the protection box is connected with an embedded steel plate B through the connecting sheet, the locking bolt penetrates through the protection box and is connected with the extrusion block, a main supporting core is arranged inside the protection box, the main supporting core can be extruded through the extrusion block, the deformation of parts inside the main supporting core is prevented, meanwhile, the main supporting core can be reshaped through the extrusion block after the parts inside the main supporting core are deformed, and the main supporting core is protected, so that the service life of the main supporting core is prolonged, and the maintenance frequency is reduced.
3. The invention provides a bridge support capable of being partially replaced and a replacement method, wherein a sliding groove B, a polytetrafluoroethylene plate, a middle steel lining plate, a pressure-bearing rubber plate and a sealing ring are arranged inside a main support core, the outer surface of the pressure-bearing rubber plate is wrapped with the sealing ring, and the sealing ring is a member made of polyurethane material, so that the bridge support has good waterproof performance, prevents rainwater from corroding the pressure-bearing rubber plate, prolongs the service life of the pressure-bearing rubber plate and reduces the working cost.
Drawings
FIG. 1 is a general block diagram of a partially replaceable bridge deck according to the present invention;
FIG. 2 is a schematic view of a disassembled structure of the partially replaceable bridge girder according to the present invention;
FIG. 3 is a partial structural view of a bridge securing mechanism of the bridge girder erection support of the present invention;
FIG. 4 is a split structure diagram of a pre-buried steel plate A of the bridge bearing capable of being partially replaced according to the invention;
FIG. 5 is a view of a support mechanism of the present invention with a partially replaceable bridge deck;
FIG. 6 is a schematic diagram of a partially replaceable protective housing for a bridge support according to the present invention;
FIG. 7 is a view showing the internal structure of a first steel plate of a bridge girder according to the present invention, which is partially replaceable;
FIG. 8 is an enlarged view of a partially replaceable bridge deck of the present invention as shown in FIG. 7A;
FIG. 9 is a view showing a partially replaceable bridge deck of the present invention in a replacement state.
In the figure: 1. a support mechanism; 11. a protection box; 111. connecting sheets; 112. locking the bolt; 113. extruding the block; 12. a primary support core; 121. a chute B; 1211. a fixing hole; 122. a polytetrafluoroethylene sheet; 123. an intermediate steel liner plate; 124. a pressure-bearing rubber plate; 125. a seal ring; 13. a guide rail; 131. perforating the threads; 14. a stainless steel plate; 141. a chute A; 142. connecting holes; 15. lengthening the locking bolt; 2. a bridge fixing mechanism; 21. pre-burying a steel plate A; 211. a first steel plate; 2111. a pin hole; 2112. a vertical slot; 212. a second steel plate; 2121. punching a bolt; 2122. a movable steel pin; 21221. a baffle plate; 21222. a hexagon socket nut; 213. a magnetic strip; 22. an upper support plate; 221. a chute C; 222. a magnetic slot; 23. an upper anchor bolt; 3. a pier fixing mechanism; 31. pre-burying a steel plate B; 311. fine screw holes; 32. and (5) lower anchoring bolts.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a bridge bearer capable of being partially replaced includes a supporting mechanism 1, a bridge fixing mechanism 2 and a bridge pier fixing mechanism 3, the upper end of the supporting mechanism 1 is provided with the bridge pier fixing mechanism 2, the lower end of the supporting mechanism 1 is provided with the bridge pier fixing mechanism 3, the supporting mechanism 1 includes a protection box 11, a main supporting core 12, a guide rail 13, a stainless steel plate 14 and an elongated locking bolt 15, the inside of the protection box 11 is provided with the main supporting core 12, the upper surface of the main supporting core 12 is provided with the guide rail 13, the outer surface of the guide rail 13 is provided with a threaded through hole 131, the upper surface of the guide rail 13 is provided with the stainless steel plate 14, the lower bottom surface of the stainless steel plate 14 is provided with a sliding chute a141, the groove surface of the sliding chute a141 is provided with a connecting hole 142, the inside of the main supporting core 12, the guide rail 13 and the stainless steel plate 14 is provided with the elongated locking bolt 15, the elongated locking bolt 15 passes through the connecting hole 142 and the threaded through hole 131 to be connected with the main supporting core 12, the upper surface of corrosion resistant plate 14 is provided with bridge fixed establishment 2, be provided with pier fixed establishment 3 on the lower bottom surface of protection box 11, bridge fixed establishment 2 includes pre-buried steel sheet A21, upper bracket board 22 and last anchor bolt 23, be provided with upper bracket board 22 on the lower bottom surface of pre-buried steel sheet A21, the upper surface of pre-buried steel sheet A21 is provided with anchor bolt 23, pre-buried steel sheet A21 is connected with the bottom surface under the bridge through last anchor bolt 23, pier fixed establishment 3 includes pre-buried steel sheet B31 and anchor bolt 32 down, be provided with anchor bolt 32 down on the lower bottom surface of pre-buried steel sheet B31, the upper surface of pre-buried steel sheet B31 is provided with screw thread pore 311, pre-buried steel sheet B31 is connected with the pier upper surface through anchor bolt 32 down.
Referring to fig. 5 and 6, a connecting piece 111 is arranged on the outer surface of the protection box 11, a locking bolt 112 is fixedly arranged on the outer surface of the protection box 11, an extrusion block 113 is arranged inside the protection box 11, the protection box 11 is connected with an embedded steel plate B31 through the connecting piece 111, the locking bolt 112 passes through the protection box 11 and is connected with the extrusion block 113, the main support core 12 comprises a sliding chute B121, a polytetrafluoroethylene plate 122 and a middle steel lining plate 123, the main support core 12 is provided with a chute B121 on the upper surface, a fixing hole 1211 is formed on the chute surface of the chute B121, a polytetrafluoroethylene plate 122, an intermediate steel lining plate 123, a pressure-bearing rubber plate 124 and a sealing ring 125 are all arranged inside the main support core 12, the polytetrafluoroethylene plate 122 is fixedly installed on the upper surface of the intermediate steel lining plate 123, the intermediate steel lining plate 123 is fixedly installed on the upper surface of the pressure-bearing rubber plate 124, and the sealing ring 125 wraps the outer surface of the pressure-bearing rubber plate 124.
Referring to fig. 3, 4, 7 and 8, the pre-buried steel plate a21 includes a first steel plate 211 and a second steel plate 212, one end of the first steel plate 211 is provided with the second steel plate 212, a magnetic stripe 213 is fixedly installed on a lower bottom surface of the pre-buried steel plate a21, a sliding slot C221 is provided on a lower bottom surface of the upper support plate 22, a magnetic slot 222 is provided on an upper surface of the upper support plate 22, the upper support plate 22 is movably connected with the guide rail 13 through the sliding slot C221, the upper support plate 22 is magnetically connected with the pre-buried steel plate a21 through the magnetic slot 222 and the magnetic stripe 213, one side of the first steel plate 211 is provided with a latch hole 2111, one end of the latch hole 2111 is provided with a vertical slot 2112, one side of the second steel plate 212 is provided with a latch through hole 2121, a movable steel pin 2122 is provided inside the latch through hole 2121, one end of the movable steel pin 21221 is provided with a stop 21222 at the other end, and the movable steel pin 2122 passes through the latch through hole 2121 and is connected with the vertical slot 2112.
Referring to fig. 2 and 5, the main support core 12 is connected to the guide rail 13 through the slide groove B121, the stainless steel plate 14 is connected to the guide rail 13 through the slide groove a141, the fixing hole 1211, the threaded through hole 131 and the connection hole 142 are all disposed in the same vertical plane, and the sealing ring 125 is a member made of a polyurethane material.
Referring to fig. 9, the bridge and the pier are separated from each other by using the hydraulic jack, and the state of the hydraulic jack is noticed at any time during the operation of the hydraulic jack, and then the whole is taken out.
In order to better show the bridge support capable of being partially replaced and the replacement method thereof, the embodiment provides a replacement method of the bridge support capable of being partially replaced, which includes the following steps:
the method comprises the following steps: when the embedded steel plate A21 is damaged, the bridge needs to be broken by a slotting tool to take out the damaged embedded steel plate A21, the embedded steel plate A21 is composed of a first steel plate 211 and a second steel plate 212, one of the damaged embedded steel plates is taken out without taking out the whole embedded steel plate A, after a new embedded steel plate A21 is installed, the embedded steel plate A is blocked by cement, and epoxy mortar is filled between the upper anchor bolt 23 and the cement;
step two: when the stainless steel plate 14 is damaged, firstly, the bridge is slightly separated from the bridge pier by using an external hydraulic jack, if the whole placing time is long, dust and sand between the upper support plate 22 and the stainless steel plate 14 need to be swept clean by using air flow generated by an air pump, the dust and the sand are prevented from being blocked in the extraction process, then, the lengthened locking bolt 15 is unscrewed, the stainless steel plate 14 is taken down through the sliding of the sliding groove A141, and the lengthened locking bolt 15 is screwed in after a new stainless steel plate is replaced, so that the replacement is completed;
step three: when the main supporting core 12 is damaged, firstly, the locking bolt 112 needs to be loosened, the extrusion block 113 is separated from the supporting core 12, then the lengthened locking bolt 15 is unscrewed, the main supporting core 12 is taken out, if the main supporting core 12 is deformed, the extrusion block 113 is used for loosening back and forth, the main supporting core 12 is peeled off from the main supporting core, and the replacement is completed;
step four: when the embedded steel plate B31 is damaged, the bridge is slightly separated from the bridge pier by using an external hydraulic jack, the protection box 11, the main support core 12, the guide rail 13 and the stainless steel plate 14 are all taken out, temporary support objects are replaced to prevent the hydraulic jack from causing danger due to failure, the surface of the bridge pier is broken by using a cutting tool, the embedded steel plate B31 is taken out by taking the embedded steel plate B31 according to the principle of minimum breaking area, new embedded steel plates are replaced, cement is used for plugging, the protection box 11, the main support core 12, the guide rail 13 and the stainless steel plate 14 are placed after cement is completely molded, the position is adjusted, and replacement is completed;
step five: after each part is replaced, the whole is placed between the bridge and the pier, the hydraulic jack is taken out, the state of the hydraulic jack is noticed at any time in the whole replacement process, and accidents caused by faults of the hydraulic jack are prevented from happening.
The first embodiment is as follows: when the embedded steel plate a21 is damaged, the bridge needs to be broken by a slotting tool to take out the damaged embedded steel plate a21, because the embedded steel plate a21 is composed of a first steel plate 211 and a second steel plate 212, one of the embedded steel plates is taken out when one of the embedded steel plates is damaged, the movable steel pin 2122 is rotated to enable the blocking piece 21221 to be separated from the vertical groove 2112, after a new embedded steel plate a21 is installed, the new embedded steel plate a21 is sealed and blocked by cement, and epoxy mortar is filled between the upper anchor bolt 23 and the cement.
Example two: when the main supporting core 12 is damaged, firstly, the bridge and the pier need to be slightly separated by using an external hydraulic jack, the steel plate is used for replacing support, then, the main supporting core 12 is pulled out, the second loose locking bolt 112 separates the extrusion block 113 from the supporting core 12, then, the lengthened locking bolt 15 is unscrewed, the main supporting core 12 is taken out, and if the main supporting core 12 is deformed, the extrusion block 113 is loosened back and forth, and then, the main supporting core 12 is peeled out.
Example three: when corrosion resistant plate 14 takes place to damage, utilize external hydraulic jack to separate bridge and pier slightly, if holistic laying time is longer, the air current that needs to utilize the air pump to produce sweeps dust and grit between upper bracket plate 22 and corrosion resistant plate 14 clean, prevents to be hindered at the extraction in-process, unscrews extension locking bolt 15 again, takes off corrosion resistant plate 14 through the slip of spout A141, screws into extension locking bolt 15 again after changing new, accomplishes the change.
Example four: when the embedded steel plate B31 is damaged, the bridge is slightly separated from the pier by using an external hydraulic jack, the protection box 11, the main support core 12, the guide rail 13 and the stainless steel plate 14 are all taken out, temporary support objects are replaced, the hydraulic jack is prevented from being broken down to cause danger, the surface of the pier is broken open by using an excavating tool, the embedded steel plate B31 is taken out by taking the principle of minimum breaking area, new objects are replaced, cement plugging is utilized, the protection box 11, the main support core 12, the guide rail 13 and the stainless steel plate 14 are placed after cement is completely molded, the position is adjusted, and replacement is completed.
In summary, the following steps: the bridge bearing capable of being partially replaced and the replacement method thereof, the upper end of a supporting mechanism 1 is provided with a bridge fixing mechanism 2, the lower end of the supporting mechanism 1 is provided with a pier fixing mechanism 3, the inside of a protection box 11 is provided with a main supporting core 12, the inside of the main supporting core 12 is provided with a chute B121, a polytetrafluoroethylene plate 122, an intermediate steel lining plate 123, a pressure-bearing rubber plate 124 and a sealing ring 125, the outer surface of the pressure-bearing rubber plate 124 is wrapped with the sealing ring 125, the sealing ring 125 is a member made of polyurethane material, has good waterproof performance, prevents rainwater from corroding the pressure-bearing rubber plate 124, prolongs the service life of the pressure-bearing rubber plate 124, reduces the working cost, the upper surface of the main supporting core 12 is provided with a guide rail 13, the outer surface of the guide rail 13 is provided with a threaded through hole 131, the upper surface of the guide rail 13 is provided with a stainless steel plate 14, the lower bottom surface of the stainless steel plate 14 is provided with a chute A141, the connecting holes 142 are arranged on the groove surface of the sliding groove A141, the lengthened locking bolts 15 are arranged inside the main support core 12, the guide rail 13 and the stainless steel plate 14, the lengthened locking bolts 15 pass through the connecting holes 142 and the threaded through holes 131 to be connected with the main support core 12, the protection box 11, the main support core 12, the guide rail 13 and the stainless steel plate 14 are connected through the lengthened locking bolts 15, when one of the components is damaged, only the lengthened locking bolts 15 need to be unscrewed, then the damaged component is partially replaced without integral replacement, the maintenance cost is greatly reduced, the bridge fixing mechanism 2 is arranged on the upper surface of the stainless steel plate 14, the pier fixing mechanism 3 is arranged on the lower bottom surface of the protection box 11, the upper support plate 22 is arranged on the lower bottom surface of the embedded steel plate A21, the upper anchor bolt 23 is arranged on the upper surface of the embedded steel plate A21, the embedded steel plate A21 is connected with the lower bottom surface of the bridge through the upper anchor bolt 23, the embedded steel plate A21 is composed of a first steel plate 211 and a second steel plate 212, a pin hole 2111 is arranged at one side of the first steel plate 211, a vertical groove 2112 is arranged at one end of the pin hole 2111, a pin through hole 2121 is arranged at one side of the second steel plate 212, a movable steel pin 2122 is arranged inside the pin through hole 2121, a blocking piece 21221 is arranged at one end of the movable steel pin 2122, an inner hexagon nut 21222 is arranged at the other end of the movable steel pin 2122, the movable steel pin 2122 penetrates through the pin through hole 2121 to be connected with the vertical groove 2112, the blocking piece 21221 is connected with the vertical groove 2112 by rotating the movable steel pin 2122, the fixing effect is achieved, the movable steel pin 2122 is a member made of a steel structure, rustiness is not prone to occur, the embedded steel plate A21 is easy to take out after a long time, when the embedded steel plate A21 is partially damaged, corresponding concrete only needs to be chiseled, and the damage degree of the bridge structure is greatly reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (6)
1. The utility model provides a but bridge beam supports of local change, includes supporting mechanism (1), bridge fixed establishment (2) and pier fixed establishment (3), and the upper end of supporting mechanism (1) is provided with bridge fixed establishment (2), and the lower extreme of supporting mechanism (1) is provided with pier fixed establishment (3), its characterized in that: the supporting mechanism (1) comprises a protective box (11), a main supporting core (12), a guide rail (13), a stainless steel plate (14) and lengthened locking bolts (15), the main supporting core (12) is arranged inside the protective box (11), the guide rail (13) is arranged on the upper surface of the main supporting core (12), threaded through holes (131) are formed in the outer surface of the guide rail (13), the stainless steel plate (14) is arranged on the upper surface of the guide rail (13), a sliding groove A (141) is arranged on the lower bottom surface of the stainless steel plate (14), connecting holes (142) are formed in the groove surface of the sliding groove A (141), the lengthened locking bolts (15) are arranged inside the main supporting core (12), the guide rail (13) and the stainless steel plate (14), the lengthened locking bolts (15) penetrate through the connecting holes (142) and the threaded through holes (131) to be connected with the main supporting core (12), and the upper surface of the stainless steel plate (14) is provided with a bridge fixing mechanism (2), the lower bottom surface of the protection box (11) is provided with a pier fixing mechanism (3);
the bridge fixing mechanism (2) comprises an embedded steel plate A (21), an upper support plate (22) and an upper anchor bolt (23), the upper support plate (22) is arranged on the lower bottom surface of the embedded steel plate A (21), the upper anchor bolt (23) is arranged on the upper surface of the embedded steel plate A (21), and the embedded steel plate A (21) is connected with the lower bottom surface of the bridge through the upper anchor bolt (23);
the pier fixing mechanism (3) comprises an embedded steel plate B (31) and a lower anchor bolt (32), the lower bottom surface of the embedded steel plate B (31) is provided with the lower anchor bolt (32), the upper surface of the embedded steel plate B (31) is provided with a thread pore (311), and the embedded steel plate B (31) is connected with the upper surface of the pier through the lower anchor bolt (32);
the embedded steel plate A (21) comprises a first steel plate (211) and a second steel plate (212), one end of the first steel plate (211) is provided with the second steel plate (212), a magnetic strip (213) is fixedly installed on the lower bottom surface of the embedded steel plate A (21), a sliding groove C (221) is formed in the lower bottom surface of the upper support plate (22), a magnetic groove (222) is formed in the upper surface of the upper support plate (22), the upper support plate (22) is movably connected with the guide rail (13) through the sliding groove C (221), and the upper support plate (22) is magnetically connected with the embedded steel plate A (21) through the magnetic groove (222) and the magnetic strip (213);
one side of the first steel plate (211) is provided with a pin hole (2111), one end of the pin hole (2111) is provided with a vertical groove (2112), one side of the second steel plate (212) is provided with a pin perforation hole (2121), a movable steel pin (2122) is arranged inside the pin perforation hole (2121), one end of the movable steel pin (2122) is provided with a blocking piece (21221), the other end of the movable steel pin is provided with an inner hexagon nut (21222), and the movable steel pin (2122) penetrates through the pin perforation hole (2121) to be connected with the vertical groove (2112).
2. A partially replaceable bridge girder according to claim 1, wherein: the outer surface of the protection box (11) is provided with a connecting piece (111), the outer surface of the protection box (11) is fixedly provided with a locking bolt (112), an extrusion block (113) is arranged inside the protection box (11), the protection box (11) is connected with an embedded steel plate B (31) through the connecting piece (111), and the locking bolt (112) penetrates through the protection box (11) to be connected with the extrusion block (113).
3. A partially replaceable bridge girder according to claim 1, wherein: the main supporting core (12) comprises a sliding groove B (121), a polytetrafluoroethylene plate (122), an intermediate steel lining plate (123), a pressure-bearing rubber plate (124) and a sealing ring (125), the sliding groove B (121) is arranged on the upper surface of the main supporting core (12), a fixing hole (1211) is formed in the groove surface of the sliding groove B (121), the polytetrafluoroethylene plate (122), the intermediate steel lining plate (123), the pressure-bearing rubber plate (124) and the sealing ring (125) are arranged inside the main supporting core (12), the polytetrafluoroethylene plate (122) is fixedly arranged on the upper surface of the intermediate steel lining plate (123), the intermediate steel lining plate (123) is fixedly arranged on the upper surface of the pressure-bearing rubber plate (124), and the sealing ring (125) is wrapped on the outer surface of the pressure-bearing rubber plate (124).
4. A partially replaceable bridge girder according to claim 1, wherein: the main supporting core (12) is connected with the guide rail (13) through the sliding groove B (121), the stainless steel plate (14) is connected with the guide rail (13) through the sliding groove A (141), and the fixing hole (1211), the threaded through hole (131) and the connecting hole (142) are all arranged in the same vertical plane.
5. A partially replaceable bridge girder according to claim 3, wherein: the sealing ring (125) is a member made of a polyurethane material.
6. A method of replacing a partially replaceable bridge deck according to any one of claims 1 to 5, wherein: the method comprises the following steps:
s1: when the embedded steel plate A21 is damaged, the bridge needs to be broken by a slotting tool to take out the damaged embedded steel plate A21, the embedded steel plate A21 is composed of a first steel plate 211 and a second steel plate 212, one of the damaged embedded steel plates is taken out without taking out the whole embedded steel plate A, after a new embedded steel plate A21 is installed, the embedded steel plate A is blocked by cement, and epoxy mortar is filled between the upper anchor bolt 23 and the cement;
s2: when the stainless steel plate 14 is damaged, firstly, the bridge is slightly separated from the bridge pier by using an external hydraulic jack, if the whole placing time is long, dust and sand between the upper support plate 22 and the stainless steel plate 14 need to be swept clean by using air flow generated by an air pump, the dust and the sand are prevented from being blocked in the extraction process, then, the lengthened locking bolt 15 is unscrewed, the stainless steel plate 14 is taken down through the sliding of the sliding groove A141, and the lengthened locking bolt 15 is screwed in after a new stainless steel plate is replaced, so that the replacement is completed;
s3: when the main supporting core 12 is damaged, firstly, the locking bolt 112 needs to be loosened, the extrusion block 113 is separated from the supporting core 12, then the lengthened locking bolt 15 is unscrewed, the main supporting core 12 is taken out, if the main supporting core 12 is deformed, the extrusion block 113 is used for loosening back and forth, the main supporting core 12 is peeled off from the main supporting core, and the replacement is completed;
s4: when the embedded steel plate B31 is damaged, the bridge is slightly separated from the bridge pier by using an external hydraulic jack, the protection box 11, the main support core 12, the guide rail 13 and the stainless steel plate 14 are all taken out, temporary support objects are replaced to prevent the hydraulic jack from causing danger due to failure, the surface of the bridge pier is broken by using a cutting tool, the embedded steel plate B31 is taken out by taking the embedded steel plate B31 according to the principle of minimum breaking area, new embedded steel plates are replaced, cement is used for plugging, the protection box 11, the main support core 12, the guide rail 13 and the stainless steel plate 14 are placed after cement is completely molded, the position is adjusted, and replacement is completed;
s5: after each part is replaced, the whole is placed between the bridge and the pier, the hydraulic jack is taken out, the state of the hydraulic jack is noticed at any time in the whole replacement process, and accidents caused by faults of the hydraulic jack are prevented from happening.
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| CN111676810A (en) * | 2020-06-26 | 2020-09-18 | 丁西焘 | Bridge support capable of being partially replaced and mounting method thereof |
| CN113668413B (en) * | 2021-09-23 | 2023-05-23 | 重庆单轨交通工程有限责任公司 | Anchor rod replacement method for straddle type monorail tension support |
| KR102391856B1 (en) * | 2021-11-12 | 2022-05-06 | 비승산업(주) | A port bearing for bridge |
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