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CN-122013684-A - Road and bridge crack reinforced structure

CN122013684ACN 122013684 ACN122013684 ACN 122013684ACN-122013684-A

Abstract

The invention relates to the technical field of bridge construction and discloses a road and bridge crack reinforcing structure which comprises a reinforcing assembly, wherein the reinforcing assembly comprises an anchor plate, a prestressed reinforcement is fixed on the anchor plate, a pulley is arranged at the top of the prestressed reinforcement, a connecting frame is rotationally connected to the outer side of the pulley, a threaded rod is fixed at the bottom of the connecting frame, a threaded sleeve is connected to the outer side of the threaded rod in a threaded manner, a movable block is rotationally connected to the bottom of the threaded sleeve, a fixed block is fixed at the bottom of the movable block, a positioning plate is arranged at the top of the fixed block, and a through groove is formed in the positioning plate. The device has the beneficial effects that through the arrangement of the adjusting component, when the bridge vibrates, the pre-tightening force applying position of the pre-stressed steel bar can be transversely adjusted, so that the stress state of the dynamic change of the bridge body and the stress concentration position of the crack during the vibration of the bridge can be matched in real time, the pre-tightening force can be accurately applied, the crack expansion can be effectively inhibited, and the stability of the reinforcing effect can be ensured.

Inventors

  • ZHENG WENJUN
  • JIANG YAN
  • CHANG HAONAN
  • CHENG XIAOYU
  • Zang Dianwei
  • LI ENLIN

Assignees

  • 郑文军

Dates

Publication Date
20260512
Application Date
20260302

Claims (10)

  1. 1. A road and bridge crack reinforcing structure is characterized by comprising, The reinforcing assembly (1) comprises an anchoring plate (11), wherein a prestressed reinforcement (12) is fixed on the anchoring plate (11), a pulley (13) is arranged at the top of the prestressed reinforcement (12), a connecting frame (14) is rotationally connected to the outer side of the pulley (13), a threaded rod (15) is fixed at the bottom of the connecting frame (14), a threaded sleeve (16) is in threaded connection with the outer side of the threaded rod (15), a movable block (17) is rotationally connected to the bottom of the threaded sleeve (16), a fixed block (18) is fixed at the bottom of the movable block (17), a positioning plate (19) is arranged at the top of the fixed block (18), a through groove (19-1) is formed in the positioning plate (19), and the movable block (17) is movably connected with the through groove (19-1); The adjusting component (2) is arranged on the positioning plate (19), and comprises a driving piece (21), the driving piece (21) comprises a reciprocating roller (211) arranged at the top of the positioning plate (19), a motor (212) is arranged at the end part of the reciprocating roller (211), a rotating sleeve (213) is connected to the inside of the movable block (17) in a rotating mode, a fixed shaft (214) is fixed on the inner side of the rotating sleeve (213), and the fixed shaft (214) is meshed with the reciprocating roller (211).
  2. 2. The crack reinforcing structure for roads and bridges according to claim 1, wherein the driving member (21) further comprises a vibration sensor (215), and the vibration sensor (215) is installed and fixed at one side of the bridge.
  3. 3. The road and bridge crack reinforcing structure according to claim 2, wherein the adjusting assembly (2) further comprises a rotating member (22), the rotating member (22) comprises a gear (221) fixed on the outer side of the threaded sleeve (16), and a toothed plate (222) is fixed on one side of the positioning plate (19).
  4. 4. The road and bridge crack reinforcing structure according to claim 2 or 3, wherein the adjusting component (2) further comprises a limiting piece (23), the limiting piece (23) comprises a plugboard (231) inserted on the movable block (17), the rotating sleeve (213) is provided with a slot (213-1), and the plugboard (231) is clamped with the slot (213-1).
  5. 5. The structure for reinforcing a crack between a road and a bridge according to claim 4, wherein a fixing column (232) is fixed on one side of the insertion plate (231), a stress block (233) is fixed at the end of the fixing column (232), a supporting rod (234) is fixed at the top of the positioning plate (19), and a squeezing block (235) is fixed at the top of the supporting rod (234).
  6. 6. The structure for reinforcing a crack between a road and a bridge according to claim 5, wherein the extrusion blocks (235) are triangular and are distributed on the top of the supporting rod (234) in a plurality of straight lines, and the extrusion blocks (235) are matched with the stress blocks (233).
  7. 7. The road and bridge crack reinforcing structure according to claim 5 or 6, wherein the adjusting component (2) further comprises a delay piece (24), the delay piece (24) comprises a positioning sleeve (241) fixed on one side of the movable block (17), a piston plate (242) is fixed on the outer side of the fixed column (232), a spring (243) is fixed on one side of the piston plate (242), and the other end of the spring (243) is fixed on the inner wall of the positioning sleeve (241).
  8. 8. The structure for reinforcing a crack between a road and a bridge according to claim 7, wherein a ventilation groove (241-1) is formed in one side of the positioning sleeve (241), a baffle plate (244) is hinged to one side of the positioning sleeve (241), and ventilation holes (244-1) are formed in the baffle plate (244).
  9. 9. The road and bridge crack reinforcing structure according to claim 8, wherein a plurality of slots (213-1) are distributed on the outer side of the rotating sleeve (213) in a ring shape.
  10. 10. Road-bridge crack-reinforcing structure as claimed in claim 8 or 9, characterized in that the anchor plate (11) and the locating plate (19) are both fastened to the bridge by means of bolts.

Description

Road and bridge crack reinforced structure Technical Field The invention relates to the technical field of bridge construction, in particular to a road and bridge crack reinforcing structure. Background In the long-term service process of the bridge, the bridge structure is influenced by multiple factors such as repeated action of vehicle load and environmental corrosion, cracks are very easy to generate on key stressed components such as a beam body and a bridge pier, the existence of the cracks can weaken the bearing capacity and rigidity of the components, the structural deflection is increased, the deformation is overrun, the corrosion of an environment medium to internal reinforcing steel bars is further aggravated, the linkage damage such as corrosion of the reinforcing steel bars and spalling of concrete is caused, the bridge structure is invalid when serious, even collapse accidents are caused, and therefore the bridge is very important to effectively reinforce and repair the cracked bridge in time. The external prestress beam reinforcement technology has the advantages of convenient construction, obvious reinforcement effect, small disturbance to the original structure, adjustable prestress according to the requirement and the like, and becomes one of the main technologies in the current bridge crack reinforcement field, the technology applies the prestress by arranging the prestress steel bars outside the bridge members and utilizing the tensioning equipment, the prestressed reinforcement is pulled, so that reverse supporting force is formed on the concrete beam, tensile stress caused by load is effectively counteracted, crack expansion is restrained, micro-crack closure is promoted, bending resistance, shearing resistance bearing capacity and overall rigidity of the member are obviously improved, and service life of the bridge is prolonged. When the bridge is vibrated by passing vehicles, wind load and the like, the stress state of the beam body changes dynamically along with the vibration, the stress concentration position of a crack area also deviates along with the vibration, at the moment, if the pre-tightening force application position of the tensioning equipment to the pre-stressed steel bar cannot be transversely adjusted and is only fixed in a single area, the pre-stress and stress matching unbalance can be caused, the high stress area of the beam body in vibration deviates, the pre-tightening force of the fixed application position cannot precisely cover a new stress concentration point, the restrained crack is easily re-expanded due to the stress release, the reinforcing effect fails, the continuous pre-tightening force of the fixed position interacts with the beam body deformation caused by the vibration to form local additional bending moment, the concrete splitting risk under the anchor is aggravated, and even a new crack is induced. Disclosure of Invention The present invention has been made in view of the above-mentioned and/or existing problems occurring in road and bridge crack reinforcing structures. Therefore, the problem to be solved by the invention is that when the bridge vibrates, the pre-tightening force application position of the pre-stressing steel bar cannot be transversely adjusted, so that the pre-tightening force cannot be matched with the stress and crack stress concentration position of the dynamic change of the beam body, the reinforcement effect is weakened, the pre-stressing loss and the member fatigue damage are accelerated, and new structural damage is possibly induced. The technical scheme includes that the road and bridge crack reinforcing structure comprises a reinforcing component and a connecting frame, wherein the reinforcing component comprises an anchor plate, a prestress steel bar is fixed on the anchor plate, a pulley is arranged at the top of the prestress steel bar, the outer side of the pulley is rotationally connected with the connecting frame, a threaded rod is fixed at the bottom of the connecting frame, a threaded sleeve is in threaded connection with the outer side of the threaded rod, a movable block is rotationally connected at the bottom of the threaded sleeve, a fixed block is fixed at the bottom of the movable block, a positioning plate is arranged at the top of the fixed block, a through groove is formed in the positioning plate, and the movable block is movably connected with the inside of the through groove; The adjusting assembly is arranged on the positioning plate and comprises a driving piece, the driving piece comprises a reciprocating roller positioned at the top of the positioning plate, a motor is arranged at the end part of the reciprocating roller, a rotating sleeve is connected inside the movable block in a rotating mode, a fixed shaft is fixed on the inner side of the rotating sleeve, and the fixed shaft is meshed with the reciprocating roller. As a preferable scheme of the road and bridge crack reinforcing structure, th