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CN-117779591-B - Replaceable graded slippage energy consumption self-limiting reset bridge stop block protection device

CN117779591BCN 117779591 BCN117779591 BCN 117779591BCN-117779591-B

Abstract

The invention provides a replaceable graded sliding energy consumption self-limiting reset bridge stop block protection device which comprises a mounting plate, wherein the mounting plate is detachably connected with a stop block, the stop block is arranged opposite to a main beam, a bottom plate is arranged at the bottom of the mounting plate and is arranged on a capping beam, a sealing shell is arranged on the bottom plate, a cushion block is arranged on one side, close to the stop block, in the sealing shell, a first friction plate is arranged on the lower surface of the sealing shell and the upper surface of the bottom plate, and a second metal damper, a second connecting plate, a second viscous damper, a first connecting plate, a first viscous damper and a first metal damper are sequentially arranged between the two first friction plates and on one side, located on the cushion block, of the sealing shell. The invention can effectively prevent the damage of the main beam to the stop block, effectively avoid the occurrence of beam falling phenomenon, and has excellent rigidity and damping self-adaptive adjustment capability.

Inventors

  • MIAO FENGYANG
  • ZHOU HAO
  • TIAN XIUQUAN
  • LIN HAILIN
  • CHEN HONGHAO
  • LU YURUI
  • CHEN YUNFEI

Assignees

  • 华南理工大学

Dates

Publication Date
20260512
Application Date
20231023

Claims (9)

  1. 1. The utility model provides a removable hierarchical slip power consumption is from limit reset bridge dog protection device, a serial communication port, including mounting panel (1), mounting panel (1) are connected with dog (19) can be dismantled, dog (19) set up with girder (21) relatively, the bottom of mounting panel (1) is provided with bottom plate (16), bottom plate (16) set up on bent cap (20), bottom plate (16) top is provided with enclosure (2), be provided with cushion (18) in one side that is close to dog (19) in enclosure (2), the upper surface department of lower surface and bottom plate (16) of enclosure (2) all is provided with first friction plate (3), second metal damper (15) have been set gradually in one side that just is located cushion (18) between two first friction plates (3), second connecting plate (11), second viscous damper (6), first connecting plate (9), first viscous damper (5) and first metal damper (4), be provided with first slider (13) and second slider (14) in the height direction between second connecting plate (11) and corresponding damping plate (14) are all set up, the third viscous damper (10), the second viscous damper (6) and the first viscous damper (5) are respectively sleeved with a spring (7), the free end of the first connecting plate (9) is in contact with the first friction plate (3), the upper surface and the lower surface of the first metal damper (4) and the upper surface of the second metal damper (15) are respectively in contact with the first friction plate (3), and one side of the first metal damper (4) facing the main beam (21) is suspended to expose out of the enclosure (2) and can be in contact with the main beam (21); the friction coefficients of the first friction plate (3) from the main beam (21) to the stop block (19) are in turn 、 、 And (2) and < < The friction coefficient between the first metal damper (4), the first connecting plate (9) and the first friction plate (3) is The friction coefficient between the second connecting plate (11) and the first friction plate (3) is The friction coefficient between the second metal damper (15) and the first friction plate (3) is 。
  2. 2. The replaceable graded-slip energy-consumption self-limiting-resetting bridge stop block protection device according to claim 1, wherein a second friction plate (12) is arranged between the first sliding block (13) and the second sliding block (14), and the friction coefficient between the first sliding block (13), the second sliding block (14) and the second friction plate (12) is that 。
  3. 3. The replaceable graded-slip energy-consumption self-limiting reset bridge stop block protection device according to claim 1, wherein the second friction plate (12) is adhered and fixed with the first sliding block (13), and the friction coefficient of the second friction plate (12) is that 。
  4. 4. The replaceable graded slippage energy-consumption self-limiting reset bridge stop protection device according to claim 1, wherein the first metal damper (4) is made of shape memory alloy.
  5. 5. The replaceable graded slip energy consumption self-limiting reset bridge stop protection device according to claim 1, wherein the second metal damper (15) is made of normal temperature superplastic alloy.
  6. 6. The replaceable graded slippage energy consumption self-limiting reset bridge stop protection device according to claim 1, further comprising a connecting shaft (8), wherein one end of the first viscous damper (5) is detachably connected with the first metal damper (4), and the other end of the first viscous damper is detachably connected with the connecting shaft (8); The number of the first connecting plates (9) is two, one end of the first connecting plate (9) is detachably connected with the connecting shaft (8), and the other end of the first connecting plate is respectively contacted with the first friction plate (3) arranged on the lower surface of the sealing shell (2) and the upper surface of the bottom plate (16).
  7. 7. The replaceable graded slippage energy consumption self-limiting reset bridge stop protection device according to claim 1, wherein the first connecting plate (9) is obliquely arranged towards the stop (19).
  8. 8. The replaceable graded sliding energy consumption self-limiting reset bridge stop protection device according to claim 1, wherein the second metal damper (15) is detachably connected with the first sliding block (13) and the third viscous damper (10).
  9. 9. The replaceable graded slippage energy consumption self-limiting reset bridge stop protection device according to any one of claims 1-8, wherein one surface of the first metal damper (4) contacted with the main beam (21) is a cambered surface.

Description

Replaceable graded slippage energy consumption self-limiting reset bridge stop block protection device Technical Field The invention belongs to the field of bridge shock absorption, and particularly relates to a replaceable graded slippage energy consumption self-limiting reset bridge stop block protection device. Background The bridge stop block is an indispensable transverse limiting component of the bridge, and has the functions of limiting the transverse displacement of the girder, preventing the girder from falling down and protecting the support. In the prior art, reinforced concrete blocks with rectangular or trapezoidal cross sections are commonly used in bridges, but the reinforced concrete blocks are high in rigidity and poor in damping and energy consumption effects, and the blocks and the main beams are damaged locally when the reinforced concrete blocks collide with the main beams, and even impact force is transmitted to a lower structure, so that the lower structure is damaged. In addition, the reinforced concrete stop block does not have a resetting function, so that the main beam generates larger residual deformation, even the main beam can be dropped, the damage of the lower structure is aggravated, and the life and property safety is seriously endangered. Chinese patent CN113756179a discloses a combined bridge stop with automatic reset function, which realizes the damping control function to the bridge by setting hydraulic damper and corrosion-resistant pad, and realizes the buffering, unloading and reset functions by setting double-acting hydraulic rod, buffer component, supporting structure, balancing weight, first hydraulic telescopic rod, etc. However, the whole stop block structure has the advantages of few energy consumption and shock absorption mechanisms, poor effect, risk of side turning caused by the impact of the main beam when encountering strong shock, complex structure and incapability of being removed and replaced after the components are damaged. Therefore, it becomes important to provide a stopper protection device with an effective damping and energy consumption effect and a limit and reset function. Disclosure of Invention In order to solve at least one of the problems in the prior art, the invention provides a replaceable graded sliding energy-consumption self-limiting reset bridge stop block protection device, which has an effective damping energy consumption effect and a limiting reset function. In order to achieve the aim of the invention, the invention provides a replaceable graded sliding energy consumption self-limiting reset bridge stop block protection device, which comprises a mounting plate, wherein the mounting plate is detachably connected with a stop block, the stop block is arranged opposite to a main beam, the bottom of the mounting plate is provided with a bottom plate which is used for being arranged on a capping beam, a sealing shell is arranged on the bottom plate, one side, close to the stop block, in the sealing shell is provided with a cushion block, the lower surface of the sealing shell and the upper surface of the bottom plate are respectively provided with a first friction plate, a second metal damper, a second connecting plate, a second viscous damper, a first connecting plate, a first viscous damper and a first metal damper are sequentially arranged between the two first friction plates and at one side, which is positioned on the cushion block, first sliding blocks and second sliding blocks are arranged between the second metal damper and the second connecting plate in a staggered mode in the height direction, third viscous dampers are correspondingly arranged between the first sliding blocks and the second connecting plate and between the second sliding blocks and the second metal damper, springs are respectively sleeved outside the third viscous dampers, the second viscous dampers and the first viscous dampers, the free end portions of the first connecting plates are in contact with the first friction plates, the upper surfaces and the lower surfaces of the first metal dampers and the second metal dampers are in contact with the first friction plates respectively, and the first metal dampers are exposed out of the sealing shell in a suspended mode towards one side of the girder and can be in contact with the girder. Further, the friction coefficient of the first friction plate from the main beam to the stop block is u 1、u2、u3, u 1<u2<u3, the friction coefficient among the first metal damper, the first connecting plate and the first friction plate is u 1, the friction coefficient among the second connecting plate and the first friction plate is u 2, and the friction coefficient among the second metal damper and the first friction plate is u 3. Further, a second friction plate is arranged between the first sliding block and the second sliding block, and the friction coefficient among the first sliding block, the second sliding block and the s