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CN-224227738-U - Bridge pier guard ring device of self-adaptation topography

CN224227738UCN 224227738 UCN224227738 UCN 224227738UCN-224227738-U

Abstract

The utility model belongs to the field of bridge pier safety protection, and discloses a self-adaptive terrain bridge pier guard ring device which is formed by a plurality of groups of guard components which are distributed from inside to outside in a plurality of circles, wherein each group of guard components is formed by a plurality of soft water permeable pipes which are connected end to end through mortise and tenon joint structure devices. The first mortise and tenon structure device is utilized to connect the soft permeable pipes of the same circle, and the second mortise and tenon structure device is connected with the soft permeable pipes of the adjacent inner ring and the adjacent outer ring, so that the whole retainer device can be flexibly adjusted along with the change of terrains. The adoption of the mortise and tenon structure ensures the tight connection between the guard rings, allows necessary relative movement, and avoids gaps caused by terrain change. The design not only simplifies the assembly process, but also improves the adaptability and the protection effect of the guard ring device, ensures that the protected area of the bridge pier is always effectively covered, and greatly improves the reliability and the durability of the scour protection of the bridge pier.

Inventors

  • ZHANG YICHEN
  • WANG BOHAN
  • ZHOU HONGJUN
  • QI HONGLIANG

Assignees

  • 长安大学

Dates

Publication Date
20260512
Application Date
20250528

Claims (10)

  1. 1. The bridge pier guard ring device is characterized by comprising a plurality of groups of guard assemblies, wherein the guard assemblies are distributed in a plurality of circles from inside to outside by taking a bridge pier (1) as a center; The protection component comprises a plurality of soft water permeable pipes (2) which are connected end to end; In the protection assembly of the same circle, every two adjacent soft water permeable pipes (2) are connected through a first mortise and tenon structure device (3); In the protection assembly of the adjacent inner ring and the adjacent outer ring, every two adjacent soft permeable pipes (2) of the inner ring and the outer ring are connected through a second mortise and tenon structure device (4); The first mortise and tenon structure device (3) and the second mortise and tenon structure device (4) comprise a convex mortise and tenon structure device (6) and a concave mortise and tenon structure device (7); One end of the soft water permeable pipe (2) is connected with a convex mortise and tenon joint (6), and the other end is connected with a concave mortise and tenon joint (7); In the same circle of soft permeable pipes (2), the convex mortise-tenon joints (6) connected with the soft permeable pipes (2) and the concave mortise-tenon joints (7) connected with the adjacent soft permeable pipes (2) form mortise-tenon joint coordination; The outer side of the soft water permeable pipe (2) is connected with a convex mortise and tenon joint (6), and the inner side of the soft water permeable pipe is connected with a concave mortise and tenon joint (7); In the soft permeable pipes (2) of the adjacent inner ring and outer ring, the convex mortise-tenon joints (6) connected with the soft permeable pipes (2) of the inner ring and the concave mortise-tenon joints (7) connected with the soft permeable pipes (2) of the outer ring form mortise-tenon joint coordination.
  2. 2. The terrain-adaptive bridge pier guard ring device according to claim 1, wherein each ring of guard assembly comprises a semicircular part and a semi-elliptic part which are connected, the semi-elliptic part is arranged on the water facing side of the bridge pier (1), and the semicircular part is arranged on the water backing side of the bridge pier (1).
  3. 3. The terrain-adaptive bridge pier guard ring device according to claim 2, wherein the semicircular portion of the outermost ring guard member has a diameter 2 to 5 times the diameter of the bridge pier (1).
  4. 4. The terrain-adaptive pier retainer device of claim 2, wherein the semi-elliptical portion has a semi-major axis to semi-minor axis ratio of 1:0.8.
  5. 5. The self-adaptive terrain bridge pier guard ring device according to claim 1, wherein the first mortise and tenon structure device (3) further comprises a metal sleeve (5), and the metal sleeve (5) is connected to the soft water permeable pipe (2) through a clamp (8); The metal sleeve (5) and the convex mortise (6) and the metal sleeve (5) and the concave mortise (7) are connected through welding.
  6. 6. The bridge pier guard ring device adaptive to the topography according to claim 1, wherein the second mortise and tenon structure device (4) further comprises a collar (9), the collar (9) is sleeved on the soft permeable pipe (2) and fixed through bolts (10), one side of the collar (9) is welded with the convex mortise and tenon joint (6), and the other side of the collar is welded with the concave mortise and tenon joint (7).
  7. 7. The terrain-adaptive bridge pier guard ring device according to claim 1, wherein the soft water permeable pipe (2) is filled with a weight, and the weight is crushed stone, metal block, tire or gravel.
  8. 8. The terrain-adaptive pier retainer device according to claim 1, wherein the pier (1) has a diameter 3 times that of the soft water permeable tube (2).
  9. 9. The bridge pier guard ring device adaptive to the topography according to claim 1, wherein the protruding portion of the convex mortise and tenon joint (6) is inserted into the groove of the concave mortise and tenon joint (7), and a metal plate is arranged at the bottom of the groove so that the protruding portion of the convex mortise and tenon joint (6) can vertically slide in the groove of the concave mortise and tenon joint (7).
  10. 10. The terrain-adaptive bridge pier retainer device according to claim 1, wherein the male mortise and tenon joint (6) and the female mortise and tenon joint (7) are made of metal materials.

Description

Bridge pier guard ring device of self-adaptation topography Technical Field The utility model belongs to the technical field of bridge pier safety protection, and particularly relates to a bridge pier guard ring device adaptive to terrains. Background Different from land structures, river-crossing bridges and most of the foundations are positioned in turbulent rivers, the river-crossing bridges are subjected to the effects of loads such as water flow and waves for a long time, local scouring around the bridge pier is easy to occur, and in addition, the natural evolution of the river bed is undercut, the traffic volume and the running load are continuously increased, the bridge foundations can be settled to different degrees, so that the bearing capacity and the stability of the bridge pier are gradually reduced, and finally, the bridge water damage phenomenon is caused, so that the driving safety is seriously influenced. At present, measures for weakening local scour of bridge piers are mainly divided into active protective measures and passive protective measures. The active protection measures are to start with weakening the erosion force of the downflow and the horseshoe vortex, such as setting up pier guard rings, expanding pile foundations, pier slotting, sacrificial piles arranged at the upstream of the piers, and the like. Passive protection measures are taken to start from improving the erosion resistance of the river bed, such as laying particulate protection materials around the pier foundation to form a facing layer and a riprap protection, etc. The retainer has the advantages of simple structure, convenient construction, obvious protection effect and the like, and becomes a very popular method for slowing down the local scour of the bridge pier. The bridge pier guard ring protection is that guard rings are arranged at certain height positions of a foundation, the strength of downward jet flow and horseshoe-shaped vortex is reduced and weakened, so that the scouring around the bridge foundation is controlled, the factors influencing the guard ring protection effect include the guard ring installation height, the size and the guard ring form, the guard ring divides water flow into an upper part and a lower part, the guard ring can prevent the submergence water flow formed in an upper area and also can influence the submergence flow and the horseshoe-shaped vortex in a lower area, the natural river bed is changed frequently, the river bed height is changed faster under the condition of larger water flow velocity, and the existing guard ring protection is difficult to achieve the expected effect. For example, chinese patent publication No. CN115506229 a-a device for protecting and permeable pier from erosion and water penetration in adaptive terrain and a method for manufacturing the same, discloses a device for protecting pier from guard ring capable of realizing adaptive terrain. The device connects a plurality of soft water permeable pipes with the multidirectional joint through corrosion-resistant springs, and when the flushing ring is formed, the outer round guard ring first sinks along with the topography, and other guard rings play roles along with the topography, so as to achieve the protection effect of self-adapting to the topography. However, in the above-mentioned device, the soft water permeable pipes are connected by the corrosion resistant springs, and during sinking of the retainers, the deformation of the springs leaves a large gap between the retainers, so that the protected area of the bridge pier is partially exposed to the flowing water. And the corrosion-resistant spring is connected with the multidirectional joint in a complex manner, and the assembly is difficult to a certain extent. Therefore, the existing bridge pier guard ring structure cannot adapt to terrain change, so that a large gap exists between guard rings, the bridge pier protected area is partially exposed in running water, and the protection effect is greatly reduced. Disclosure of utility model The utility model provides a bridge pier guard ring device with self-adaptive terrain, which has higher self-adaptive terrain precision, is more suitable for the condition of scouring around an actual bridge pier, has higher tightness of the guard ring and can compactly protect the bridge pier. In order to achieve the above purpose, the present utility model adopts the following technical contents: the bridge pier guard ring device with the self-adaptive terrain comprises a plurality of groups of protection components, wherein the protection components are distributed in a plurality of circles from inside to outside by taking a bridge pier as a center; the protection component comprises a plurality of soft water permeable pipes connected end to end; In the protection assembly of the same circle, every two adjacent soft permeable pipes are connected through a first mortise and tenon structure device; In the protection ass