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CN-224213109-U - Main arch closure device and arch bridge main arch

CN224213109UCN 224213109 UCN224213109 UCN 224213109UCN-224213109-U

Abstract

The utility model relates to the technical field of bridge engineering, and provides a main arch closure device and an arch bridge main arch. The main arch closure device comprises a first connecting component, a second connecting component and a locking component, wherein the first connecting component is arranged on one side of a closure opening of an arch rib section, the second connecting component is arranged on the other side of the closure opening of the arch rib section, the locking component is arranged between the first connecting component and the second connecting component, the locking component is used for switching among an unlocking state, a half-locking state and a full-locking state, one of the first connecting component and the second connecting component is locked with the locking component in the half-locking state, and the first connecting component and the second connecting component are both locked with the locking component in the full-locking state. The utility model solves the defect that other factors such as temperature, wind power and the like can influence the positioning accuracy of the main arch closure device in the closure process in the prior art, and realizes the main arch closure device with more accurate positioning.

Inventors

  • Gou Liqian
  • XIA YOUWEI
  • REN HONGWEI
  • LIU FUCHUN
  • YANG ZHAO
  • LI XIANG
  • Xiang Yueling

Assignees

  • 中铁十九局集团华东工程有限公司

Dates

Publication Date
20260508
Application Date
20250415

Claims (9)

  1. 1. A main arch closure device, comprising: a first connecting assembly, a parallel tube (150) arranged on the arch rib section at one side of the closure mouth; the second connecting component is arranged on the arch rib section on the other side of the closure mouth and is used for connecting the parallel connection pipe (150); A locking assembly (140) disposed between the first and second connection assemblies; The locking assembly (140) is used for switching among an unlocking state, a half-locking state and a full-locking state, one of the first connecting assembly and the second connecting assembly is locked with the locking assembly (140) in the half-locking state, and the first connecting assembly and the second connecting assembly are locked with the locking assembly (140) in the full-locking state.
  2. 2. The main arch closure device of claim 1, wherein the first connection assembly and the second connection assembly are symmetrically disposed and each comprise: One end of the positioning piece (110) is connected with the parallel connection pipe (150); the connecting pieces (120) are arranged at the other ends of the positioning pieces (110), and the locking assemblies (140) are arranged between the two connecting pieces (120).
  3. 3. The main arch closure device according to claim 2, wherein a plurality of first stiffening ribs (130) are provided between the positioning element (110) and the connecting element (120).
  4. 4. A main arch closure device according to claim 2 or 3, wherein a plurality of second stiffening ribs (160) are provided between the parallel tube (150) and the rib segments.
  5. 5. The main arch closure device according to claim 2, wherein a plurality of locking assemblies (140) are provided, a plurality of said locking assemblies (140) being spaced apart.
  6. 6. The main arch closure device according to claim 5, wherein the locking assembly (140) comprises a bolt shank (141), a first nut (142), a second nut (143) and a third nut (144); The bolt rods (141) penetrate through the connecting pieces (120) on the first connecting assembly and the second connecting assembly, the first nuts (142) are matched with nuts on the bolt rods (141) to lock one of the connecting pieces (120) with the bolt rods (141), and the second nuts (143) and the third nuts (144) are matched with each other to lock the other of the connecting pieces (120) with the bolt rods (141).
  7. 7. Main arch closure device according to any of claims 2, 3, 5 and 6, characterized in that the inside of the parallel tube (150) is provided with stiffening rings (151).
  8. 8. The main arch closure device according to claim 7, wherein the parallel tube (150) is provided with a grouting hole (153) and an exhaust hole (154), and the grouting hole (153) and the exhaust hole (154) are arranged at intervals.
  9. 9. A main arch of an arch bridge, comprising a plurality of said rib segments and a main arch closure device (100) according to any one of claims 1-8, said main arch closure device (100) being arranged between said rib segments on either side of the closure.

Description

Main arch closure device and arch bridge main arch Technical Field The utility model relates to the technical field of bridge engineering, in particular to a main arch closure device and an arch bridge main arch. Background The arch bridge main arch is the main load bearing member in the arch bridge structure. The design and construction of the arch rib is critical to the safety and stability of the entire arch bridge. The "arch rib closure" refers to the process of splicing the last section of the arch rib in the arch bridge construction process, so that the arch rib forms a complete arch structure. This process marks the completion of the arch bridge body structure and is an important engineering node. Closure typically occurs at the highest point of the bridge, where the main arch ring of the bridge has been closed, forming a continuous structural system. The locking time of the arch rib closure must be completed instantaneously under the design temperature strip to ensure that the main arch stress after closure meets the design stress. Thus, a temporary locking of the closure device is required during closure. In the actual closure process, the half-span main arches on the two sides of the closure opening continuously axially stretch under the fluctuation of the external temperature, so that the main arch closure device needs to be designed, and the width of the closure opening can be continuously changed due to strain while the temporary locking of the main arch is realized. Disclosure of utility model The utility model provides a main arch closure device, which is used for solving the defect that other factors such as temperature, wind power and the like can influence the positioning accuracy of the main arch closure device in the closure process in the prior art, and realizing a main arch closure device with more accurate positioning. The utility model provides a main arch closure device which comprises a first connecting component, a second connecting component and a locking component, wherein the first connecting component is arranged on one side of a closure opening of an arch rib section, the second connecting component is arranged on the other side of the closure opening of the arch rib section, the locking component is arranged between the first connecting component and the second connecting component, the locking component is used for switching among an unlocking state, a half locking state and a full locking state, one of the first connecting component and the second connecting component is locked with the locking component in the half locking state, and the first connecting component and the second connecting component are both locked with the locking component in the full locking state. According to the main arch closure device provided by the utility model, the first connecting component and the second connecting component are symmetrically arranged and comprise parallel pipes, positioning pieces and connecting pieces, wherein the parallel pipes are arranged on the arch rib sections, one end of each positioning piece is connected with the parallel pipe, the connecting piece is arranged at the other end of each positioning piece, and the locking component is arranged between the two connecting pieces. According to the main arch closure device provided by the utility model, a plurality of first stiffening rib plates are arranged between the positioning piece and the connecting piece. According to the main arch closure device provided by the utility model, a plurality of second stiffening rib plates are arranged between the parallel connection pipe and the arch rib section. According to the main arch closure device provided by the utility model, a plurality of locking assemblies are arranged at intervals. The main arch closure device comprises a bolt rod, a first nut, a second nut and a third nut, wherein the bolt rod penetrates through connecting pieces on the first connecting component and the second connecting component, the first nut is matched with the nuts on the bolt rod to lock one of the connecting pieces with the bolt rod, and the second nut is matched with the third nut to lock the other of the connecting pieces with the bolt rod. According to the main arch closure device provided by the utility model, the stiffening ring is arranged in the parallel connection pipe. According to the main arch closure device provided by the utility model, the parallel connection pipe is provided with the grouting holes and the exhaust holes, and the grouting holes and the exhaust holes are arranged at intervals. The utility model also provides an arch bridge main arch, which comprises a plurality of arch rib sections and the main arch closure device according to any one of the embodiments, wherein the main arch closure device is arranged between the arch rib sections at two sides of the closure opening. According to the main arch closure device provided by the utility model, when the arch rib is clo