Search

CN-117364606-B - Suspension bridge structure

CN117364606BCN 117364606 BCN117364606 BCN 117364606BCN-117364606-B

Abstract

The invention relates to a suspension bridge structure, and belongs to the technical field of suspension bridges. The invention is characterized in that an upper cross beam is correspondingly arranged right above each lower cross beam, two ends of the upper cross beam are correspondingly connected with suspension connecting pieces one by one, a liquid pipe extending along the length direction of the upper cross beam is fixedly arranged at the lower part of the upper cross beam, two ends of the liquid pipe are of a closed structure, a plurality of hydraulic telescopic rods are uniformly arranged at intervals along the length direction of the lower part of the liquid pipe, each hydraulic telescopic rod comprises a cylinder barrel and a piston rod, the upper end of each cylinder barrel is fixedly connected and communicated with the liquid pipe, the upper end of each piston rod is arranged in each cylinder barrel and is connected with a piston matched with the inner wall of each cylinder barrel, the lower end of each piston rod extends out from the lower end of each cylinder barrel and is connected with a cable clip, a plurality of main cables are uniformly arranged at intervals along the width direction of a suspension bridge and are connected with the cable clips one by one, and incompressible liquid is filled in the liquid pipes and the upper areas of the cylinders. The invention can reduce the anchorage excavation engineering quantity of the suspension bridge and reduce the construction difficulty of the main cable of the suspension bridge.

Inventors

  • DU HONGLIANG
  • CHEN WEITAO
  • MAO SUIFENG
  • WANG JIAN
  • GAO LIBAO

Assignees

  • 中国电建集团成都勘测设计研究院有限公司

Dates

Publication Date
20260512
Application Date
20231013

Claims (6)

  1. 1. A suspension bridge structure comprises a main cable (1), main cable anchoring devices and lower cross beams (3), wherein the main cable anchoring devices are arranged at two ends of canyons, two ends of the main cable (1) are respectively connected with the main cable anchoring devices, the lower cross beams (3) are arranged at intervals along the length direction of the suspension bridge, each lower cross beam (3) extends along the width direction of the suspension bridge, the upper surface of each lower cross beam (3) is provided with a bridge deck structure (4), two ends of each lower cross beam (3) are provided with suspension connecting pieces (6), and the suspension bridge structure is characterized in that an upper cross beam (5) is correspondingly arranged right above each lower cross beam (3), two ends of the upper cross beam (5) are connected with the suspension connecting pieces (6) in a one-to-one correspondence manner, liquid pipes (7) extending along the length direction of the lower cross beam are fixedly arranged at the lower part of the upper cross beam (5), two ends of each liquid pipe (7) are of a closed structure, a plurality of hydraulic telescopic rods are uniformly arranged at intervals along the length direction of the lower part of the suspension bridge, the axes of each hydraulic telescopic rod are vertically arranged, each hydraulic telescopic rod comprises a cylinder barrel (8) and a piston rod (9) which is fixedly connected with the piston rod (8) from the upper end of the piston rod (8), the main cables (1) are uniformly and alternately arranged along the width direction of the suspension bridge, the main cables (1) are connected with the cable clamps (10) in one-to-one correspondence, and incompressible liquid is filled in the liquid pipe (7) and the upper area of the cylinder barrel (8).
  2. 2. A suspension bridge construction as claimed in claim 1, characterized in that the suspension connection (6) is a suspension rod, the lower end of which is connected to the lower cross member (3) by means of a hinge structure.
  3. 3. The suspension bridge structure according to claim 1, wherein limit baffles (16) are arranged on two sides of the cable clamp (10), and the upper ends of the limit baffles (16) are fixedly connected with the bottom of the upper cross beam (5).
  4. 4. A suspension bridge structure according to claim 1, characterized in that the main cable anchoring means is an anchor cable (11) anchored to the mountain (2).
  5. 5. A suspension bridge structure as claimed in claim 1, characterized in that bridge decks (12) are provided at both ends of the canyon, the bridge decks (12) being connected to the deck system structure (4).
  6. 6. A suspension bridge structure as claimed in any one of claims 1 to 5, characterized in that wind cable anchors (13) are provided at both ends of the canyon, at least a part of the lower cross member (3) being connected to the wind cable anchors (13) at both end portions by wind-resistant cables (14).

Description

Suspension bridge structure Technical Field The invention relates to a suspension bridge structure, and belongs to the technical field of suspension bridges. Background Because of functional requirements such as investigation, investigation or inspection, a pedestrian suspension bridge is often required to be built in the high mountain canyon. The existing suspension bridge often adopts two main cables as main stress members, and anchors the main cables on the anchorage after crossing the main tower. A suspender is arranged on the main cable, the lower part of the suspender is connected with a cross beam, and a bridge deck is paved on the cross beam. The anchorage can generally adopt tunnel anchors, gravity anchors and the like. Bridge sites in canyons are often characterized by steep terrain, better geological conditions, dense vegetation, high fire protection requirements, and the like. Under the condition, the prior art has the following defects that 1, more stone excavation exists in the traditional anchorage type, explosive blasting is needed, but the explosive blasting approval and the process requirements are high, the construction period is long, and 2, when two main cables are adopted, the diameter of the main cable is large, and the process requirement for erecting the cable is high. The utility model discloses a no main tower suspension bridge and construction scheme suitable for wide deep canyon, wherein no main tower suspension bridge includes the inclined shaft, the anchor structure, the main rope, girder and hoist cable, the girder erects between the canyon, the inclined shaft is opened in the both sides of tunnel portal, and both ends tunnel portal has all offered two inclined shafts, anchor device and inclined shaft combination setting, anchor device is fixed in the inclined shaft front end, the main rope is two and connects the anchor structure that the canyon both ends correspond respectively, hoist cable one end is connected main cable other end and is connected the girder perpendicularly and be used for hanging the girder, the inclined shaft is offered to tunnel ground place plane in slant, and the inclined shaft terminal is perpendicular to tunnel and is linked together with the tunnel, the girder adopts concrete structure, steel construction or reinforced concrete composite structure, main cable and hoist cable adopt high strength steel strand to constitute, the anchor structure includes main cable saddle, the loose cable, the cable, anchor solid and cable fixing device, the main cable sets up in the anchor structure front end for changing the atress direction of main cable, the axial direction along the main cable saddle changes, it is connected to the anchor segment is connected to the anchor cable to the anchor segment, it is connected to the anchor segment to the main cable through fixing cable section, it is connected to the anchor cable section, including fixing cable section is connected to the anchor cable section. The main cable saddle is mainly used for changing the stress direction of the main cable, changing the stress of the main cable into radial direction along an inclined shaft, dispersing the main cable into a plurality of cables by the cable dispersing saddle, respectively connecting the cables with the cable fixing device, then anchoring the cables into the anchoring body, carrying out traction and fixation on the main cable, and providing tension support for the erection of the main beam. The above solution, while nominally eliminating the main tower, is actually to lower the height of the main tower and place it in an inclined well (i.e., the tunnel of a conventional tunnel anchor), with its buttresses essentially being the main tower. Because the buttress is arranged in the tunnel (inclined shaft), the foundation excavation difficulty of the buttress is high, the foundation is required to be excavated in the tunnel, the mechanical equipment is difficult to use, and the construction difficulty is increased. In addition, in the scheme, because only two main cables lead to the single main cable to have larger pulling force, the concentrated force at the cable-scattering saddle and the main cable saddle is larger, and a large-volume structure is required to resist the concentrated force. Disclosure of Invention The invention aims to solve the technical problem of providing a suspension bridge structure which can reduce the anchorage excavation engineering quantity of a suspension bridge and reduce the construction difficulty of a main cable of the suspension bridge. The technical scheme includes that the suspension bridge structure comprises main cables, main cable anchoring devices and lower cross beams, wherein the main cable anchoring devices are arranged at two ends of canyons, the two ends of the main cables are respectively connected with the main cable anchoring devices, the lower cross beams are arranged at intervals along the length direction of the suspensi