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CN-224213156-U - Maintenance reinforcing apparatus of hollow slab bridge hinge joint

CN224213156UCN 224213156 UCN224213156 UCN 224213156UCN-224213156-U

Abstract

The repairing and reinforcing device for the hinge joint of the hollow slab bridge comprises more than two self-locking anchor rods and steel beams connected with the self-locking anchor rods, wherein each self-locking anchor rod comprises a rod body and an expandable hinge joint clamping connector positioned at the top of the rod body, the rod body extends in the vertical direction and comprises a hinge joint penetrating part and a connecting part positioned at the bottom, the steel beams extend in the horizontal direction and are connected with the connecting part, and each steel beam comprises a supporting bottom surface for supporting the bottom surface of the hollow slab. The utility model can obviously reduce the interference to the normal operation of traffic in the process of repairing and reinforcing the hinge joints of the hollow slab bridge, reduce the construction and maintenance cost and furthest ensure the traffic fluency and public safety.

Inventors

  • QIAO JIE
  • LI HAO
  • XU WENYU
  • CAO ZHIWEI
  • Huang Kaoqu
  • SUN HU
  • WANG XIA

Assignees

  • 浙江交工集团股份有限公司

Dates

Publication Date
20260508
Application Date
20250410

Claims (8)

  1. 1. The maintenance reinforcing device for the hinge joint of the hollow slab bridge is characterized by comprising more than two self-locking anchor rods (3) and steel beams (4) connected with the self-locking anchor rods (3), wherein each self-locking anchor rod (3) comprises a rod body (32) and an expandable hinge joint clamping head (31) positioned at the top of the rod body (32), the rod body (32) extends in the vertical direction and comprises a hinge joint penetrating part (321) and a connecting part (322) positioned at the bottom, the steel beams (4) extend in the horizontal direction and are connected with the connecting part (322), and each steel beam (4) comprises a supporting bottom surface (41) for supporting the bottom surface of the hollow slab (1).
  2. 2. The repairing and reinforcing device for the hinge joint of the hollow slab bridge according to claim 1, wherein the self-locking anchor rod (3) further comprises a fastener (33) for connecting and fixing the steel cross beam (4) and the connecting part (322).
  3. 3. The repairing and reinforcing device for the hinge joint of the hollow slab bridge according to claim 1, wherein the steel cross beam (4) is a channel steel and is provided with a through hole matched with the connecting part (322), structural adhesive is smeared between the inner wall of the through hole and the connecting part (322), and the bottom supporting surface (41) is smeared with the structural adhesive.
  4. 4. The device for repairing and reinforcing a hinge joint of a hollow slab bridge according to claim 1, wherein grouting materials are respectively arranged in the peripheral gaps of the hinge joint clamping joint (31) and the hinge joint penetrating part (321).
  5. 5. A repair reinforcing device for a hollow slab bridge hinge joint according to claim 3, wherein said steel beam (4) comprises a plurality of beam units.
  6. 6. The repairing and reinforcing device for a hinge joint of a hollow slab bridge according to claim 1, wherein the outer surface of the shaft (32) comprises a roughened convex point.
  7. 7. The repairing and reinforcing device for the hinge joint of the hollow slab bridge according to claim 1, wherein expansion bolts (5) are arranged at two ends of the steel cross beam (4).
  8. 8. The repairing and reinforcing device for the hinge joint of the hollow slab bridge according to claim 1, wherein the bottom of the self-locking anchor rod (3) is detachably connected with a limiting sheath (6), and the limiting sheath (6) comprises an extending port (61) for extending the connecting part (322) and a limiting abutting surface (62) for abutting against the bottom surface of the hollow slab (1).

Description

Maintenance reinforcing apparatus of hollow slab bridge hinge joint Technical Field The utility model relates to the field of bridge reinforcement and transformation, in particular to a maintenance and reinforcement structure design of a hollow slab bridge hinge joint. Background The hollow slab bridge is a bridge structural form widely applied to the engineering field, is known in economy, construction convenience and better bearing performance, and is basically composed of hollow slabs. The hinge joints exist between the hollow plates, play a vital role in the bridge structure, not only can effectively transfer load and ensure that all the plate girders are stressed together under the load effects such as vehicle running and the like, and the integral bearing capacity and the structural stability of the bridge are improved, but also can coordinate the deformation among all the plate girders, adapt to the deformation requirements of the bridge under the factors such as temperature change, concrete shrinkage creep and the like, and prevent overlarge stress concentration caused by uncoordinated deformation, thereby prolonging the service life of the bridge. However, the hinge joint is extremely prone to cracking, falling off and the like due to the expansion and contraction effects caused by long-term bearing of the vehicle load and temperature change. Once the hinge joint is problematic, the bearing capacity of the local or even the whole structure of the bridge is reduced, and the safety and the service life of the bridge are seriously affected. In order to solve the above-mentioned problem, chinese patent document with publication No. CN102635060B discloses a concrete hollow slab bridge reinforced by transverse steel beams, which comprises a bridge deck beam formed by arranging a plurality of hollow slab beams in parallel and at least one stiffening beam arranged on the bottom surface of the bridge deck beam for transversely reinforcing the bridge deck beam so that the load borne by each hollow slab beam can be transversely transferred, wherein the wing plate on the upper part of the stiffening beam is fixedly connected with the hollow slab beam through a connecting rod assembly pre-buried in each hinge joint, and the connecting rod assembly comprises a screw with the tail pre-buried in the hinge joint and a barb fixedly arranged at the tail of the screw. The single plates can be prevented from being stressed through the reinforcement of the transverse steel beam, the service life of the bridge is prolonged, and the integral structure of the bridge is improved. The prior art and other traditional reinforcement methods, such as hinge joint glue filling, hinge joint reworking, bridge deck pavement thickening and the like, can alleviate the problems of the hollow slab bridge such as the hinge joint cracking, falling off and the like to a certain extent, but the methods can have great influence on the normal operation of traffic. When a bridge hinge joint is problematic and needs to be reinforced and maintained, the bridge is usually closed partially or completely within a period of time, then construction is performed on the bridge deck, and a series of complex operations including milling the bridge deck pavement and the like are performed. The construction has long period, seriously interferes with daily traffic, and increases travel time and cost. Disclosure of utility model In view of the above problems in the prior art, the present utility model provides a device for repairing and reinforcing a hinge joint of a hollow slab bridge, which supports under-bridge construction, and can significantly reduce interference to normal traffic operation and shorten a construction period as compared with a conventional repairing and reinforcing method. The construction and maintenance cost is reduced, and the traffic smoothness and public safety are guaranteed to the greatest extent. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: The maintenance reinforcing device for the hinge joint of the hollow slab bridge comprises more than two self-locking anchor rods and steel cross beams connected with the self-locking anchor rods, wherein each self-locking anchor rod comprises a rod body and an expandable hinge joint clamping connector positioned at the top of the rod body, the rod body extends in the vertical direction and comprises a hinge joint penetrating part and a connecting part positioned at the bottom, the steel cross beams extend in the horizontal direction and are connected with the connecting part, and each steel cross beam comprises a bottom supporting surface for supporting the bottom surface of the hollow slab. Self-locking bolts are an anchoring technique for building reconstruction and reinforcement that provide instantaneous anchoring forces and ensure reliability by the anchor head opening at the bottom of the hole to form a mechanical snap force. Du