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CN-224213104-U - Middle bearing type basket arch bridge structure

CN224213104UCN 224213104 UCN224213104 UCN 224213104UCN-224213104-U

Abstract

The utility model relates to the technical field of arch bridge building construction, in particular to a middle-bearing basket arch bridge structure. The middle-support type basket arch bridge structure comprises a main beam structure, an arch rib structure and a suspender device, wherein the main beam structure extends along the horizontal straight line direction, two main arch rings are symmetrically distributed on two sides of the main beam structure, the upper end of the suspender device is connected with the arch rib structure, the lower end of the suspender device is connected with the main beam structure, arch feet of the main arch rings are arranged below the main beam structure, a vault of the main arch rings is arranged above the main beam structure, and the distance between the two main arch rings is gradually reduced from the arch feet to the vault. In the utility model, the arch rib structure is provided with the two main arch rings at two sides of the main beam structure, and the distance between the two main arch rings is gradually reduced from the arch foot to the vault, so that the arch rib structure forms an inward inclined form to optimize the bearing stress state of the arch bridge, the stability of the arch rib structure can be greatly enhanced, and the bearable load of the main beam structure is improved.

Inventors

  • ZHONG WEIHUA
  • LI SHUANG
  • REN HONGWEI
  • XIA YOUWEI
  • ZHOU LIANG
  • YANG ZHAO
  • WANG KUN
  • SUN FUPING
  • WANG ZHIKE
  • LIU GUOYU

Assignees

  • 中铁十九局集团华东工程有限公司

Dates

Publication Date
20260508
Application Date
20250429

Claims (11)

  1. 1. A mid-span basket arch bridge construction comprising: the main beam structure (100) is arranged in an extending way along the horizontal straight line direction; The arch rib structure (200) is provided with two main arch rings (210) symmetrically distributed on two sides of the main beam structure (100); the upper end of the suspender device (300) is connected with the arch rib structure (200), and the lower end of the suspender device is connected with the main beam structure (100); The arch legs (212) of the main arch rings (210) are arranged below the main beam structure (100), the arch tops (211) of the main arch rings (210) are arranged above the main beam structure (100), and the distance between the two main arch rings (210) is gradually reduced from the arch legs (212) to the arch tops (211).
  2. 2. The mid-span basket arch bridge construction according to claim 1, wherein the cross-section of the main arch (210) is of limb truss type, the cross-section height of the main arch (210) increases from 6 meters to 10 meters from the arch (211) to the arch foot (212), and the cross-section width of the main arch (210) remains unchanged.
  3. 3. The mid-span basket arch bridge structure according to claim 2, wherein said main arch ring (210) is configured by connecting a plurality of trusses (220) end to end in sequence, said trusses (220) comprising a main chord tube (221), web members (223) and flat links (222), said main chord tube (221) being connected vertically and laterally through said web members (223) and said Ping Liangan (222).
  4. 4. A mid-span basket arch bridge construction according to claim 3, characterized in that the ends of the main chord tube (221) are provided with flanges (224), the cross section of the flanges (224) being smaller than the cross section of the main chord tube (221); and when the two trusses (220) are connected, the flange plates (224) are adopted for auxiliary positioning, and after the trusses are connected, the intervals of two adjacent main chord tubes (221) are welded.
  5. 5. The mid-span basket arch bridge configuration of claim 4 wherein in said truss (220), said Ping Liangan (222), said web members (223) are welded integral with said main chord tube (221).
  6. 6. A mid-span basket arch bridge construction according to any one of claims 1 to 5, wherein the ends of the arch (212) are provided with abutments (230), the abutments (230) being formed by a batter pile setting foundation and a vertical bored pile foundation.
  7. 7. The mid-span basket arch bridge configuration of claim 6, wherein said rib structure (200) further comprises cross braces (240) for connecting two of said main arches (210), a plurality of said cross braces (240) being spaced along said main arches (210) above said main beam structure (100).
  8. 8. The mid-span basket arch bridge construction according to claim 7, wherein said main arch ring (210) is provided with a cross member (250) below a crossing position with said main beam structure (100), both ends of said cross member (250) are respectively connected with said main arch ring (210) and are internally steel pipe and externally coated with C50 concrete.
  9. 9. The mid-span basket arch bridge construction according to claim 5, wherein said main arch ring (210) is of concrete-filled steel tube construction and said main chord tube (221) is internally filled with C55 self-compacting compensating shrinkage concrete.
  10. 10. A mid-span basket arch bridge construction according to claim 9, wherein said web members (223) at said arch springs (212) are box-shaped in cross-section and wherein said web members (223) are "H" -shaped in cross-section at the rest of the area outside said arch springs (212).
  11. 11. A mid-span basket arch bridge construction according to any one of claims 1 to 5, wherein the main arch ring (210) adopts a solid structure externally coated with C50 concrete, and C50 concrete is coated from the arch springing (212) to a level with the upper surface of the main beam structure (100).

Description

Middle bearing type basket arch bridge structure Technical Field The utility model relates to the technical field of arch bridge building construction, in particular to a middle-bearing basket arch bridge structure. Background Along with the rapid progress of modern construction in China, railways, highways and urban traffic lines are all around, and the bridge construction is also a great brilliant and achieves the achievement of magnificent effect as an important ring on the traffic lines. The application of the steel pipe concrete in the bridge structure enhances the adaptability of the arch bridge to the foundation, and the span is also larger and larger, so that the steel pipe concrete arch bridge is rapidly developed. The steel tube concrete arch bridge is widely applied due to the advantages of strong bearing capacity, small dead weight and low pull rod cost. However, the rib structure of the conventional arch bridge tends to be provided with the same cross section in the extending direction thereof. As the span of the arch bridge increases, the weight of the arch rib structure itself increases rapidly, resulting in uneven stress and load distribution of each part of the arch rib structure, reducing the reliability of the arch rib structure, and making the effective load of the arch bridge smaller as the length thereof increases, thereby greatly limiting the span of the arch bridge. Disclosure of utility model The present utility model is directed to solving at least one of the technical problems existing in the related art. Therefore, the utility model provides a middle-bearing basket arch bridge structure, so as to achieve the purposes of enhancing the stability of an arch rib structure and improving the load bearing capacity of the arch bridge. The utility model provides a middle-bearing type basket arch bridge structure, which comprises the following components: the main beam structure is arranged in an extending way along the horizontal straight line direction; the arch rib structure is provided with two main arch rings symmetrically distributed on two sides of the main beam structure; the upper end of the suspender device is connected with the arch rib structure, and the lower end of the suspender device is connected with the main beam structure; The arch foot of the main arch ring is arranged below the main beam structure, the vault of the main arch ring is arranged above the main beam structure, and the distance between the two main arch rings is gradually reduced from the arch foot to the vault. According to the middle-bearing type basket arch bridge structure provided by the utility model, the cross section of the main arch ring adopts four-limb trusses, the height of the cross section of the main arch ring is increased from 6 meters to 10 meters from the arch crown to the arch foot, and the width of the cross section of the main arch ring is kept unchanged. According to the middle-bearing type basket arch bridge structure provided by the utility model, the main arch ring is formed by sequentially connecting a plurality of sections of trusses end to end, the trusses comprise main chord pipes, web members and flat links, and the main chord pipes are vertically and transversely connected with the flat links through the web members. According to the middle-bearing type basket arch bridge structure provided by the utility model, the end part of the main chord pipe is provided with the flange, and the section of the flange is smaller than that of the main chord pipe; And when the two trusses are connected, flange plates are adopted for auxiliary positioning, and after the trusses are connected, the intervals of two adjacent main chord tubes are welded. According to the mid-bearing basket arch bridge structure provided by the utility model, in the truss, the flat link rod, the web member and the main chord tube are welded into a whole. According to the middle-bearing basket arch bridge structure provided by the utility model, the end parts of the arch legs are provided with arch seats, and the arch seats are composed of inclined pile embedded foundations and vertical bored pile foundations. According to the middle-bearing basket arch bridge structure provided by the utility model, the arch rib structure further comprises the transverse braces used for connecting the two main arch rings, and a plurality of transverse braces are distributed at intervals along the main arch rings above the main beam structure. According to the middle-bearing type basket arch bridge structure provided by the utility model, the main arch ring is provided with the cross beam below the intersecting and converging position of the main beam structure, two ends of the cross beam are respectively connected with the main arch ring, the inside of the cross beam is steel pipe, and the outside of the cross beam is coated with C50 concrete. According to the middle-bearing type basket arch bridge structure provided by the utility