Safety protection device for bridge pier

A technology for safety protection devices and bridge piers, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of energy dissipation, poor anti-collision effect, limited elastic buffering, short service life, etc., to achieve easy maintenance and repair, Enhanced impact resistance and long service life

Inactive Publication Date: 2010-07-14
杨光华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When a ship collides or hits a bridge pier, the kinetic energy of the ship involved in the accident is huge. The anti-collision box, double-wall anti-collision steel box and flexible energy-consuming anti-collision device can only prevent small ships due to the limited elastic buffer of the material. For a ship with a slightly larger mass or a higher speed, it cannot absorb the overall kinetic energy of the ship well, and its energy dissipation and anti-collision effects are not good, and it is easy to be damaged, and potential safety hazards still exist, and its service life is also short. need to be replaced immediately after

Method used

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  • Safety protection device for bridge pier
  • Safety protection device for bridge pier
  • Safety protection device for bridge pier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] like figure 1 , figure 2 and image 3 As shown, the safety protection device of the bridge pier includes a steel sleeve box 2 arranged on the periphery of the bridge pier 1 and a hydraulic station 7 fixed on the steel sleeve box 2;

[0029] The steel sleeve box 2 is distributed with upper and lower multi-layer supporting hydraulic cylinders, each layer of supporting hydraulic cylinders includes a plurality of supporting hydraulic cylinders 3 and forms a circle around the pier periphery. In this embodiment, there are four layers in total, see figure 2 shown, while figure 1The distribution of one layer of supporting hydraulic cylinders is shown in the figure, wherein the cylinder body 31 of each supporting hydraulic cylinder 3 is fixed on the steel casing 2, and the head of the piston rod 32 of each supporting hydraulic cylinder 3 is exposed to the steel casing. 2. Outside the outer surface, the heads of the piston rods 32 supporting the hydraulic cylinders of each ...

Embodiment 2

[0032] like Figure 4 As shown, it is the second embodiment of the present invention, and the difference from the first embodiment is that: the steel jacket box 2 is only arranged with multi-layer support hydraulic cylinders on the side close to the waterway, and the steel jacket box 2 is away from Only three supporting hydraulic cylinders 3 are distributed on each layer on that side of the channel, and a plurality of supporting members 5 are also fixed on the surface of the steel jacket box 2 and on the side opposite to the channel. Piece 5 is a hemispherical casting piece, and there are four pieces in each layer.

Embodiment 3

[0034] like Figure 5 As shown, it is the third embodiment of the present invention, and the difference from the first embodiment is that the plurality of supporting hydraulic cylinders 3 are arranged in a circle along the circumferential direction of the steel jacket box 2 in turn to form a radial shape around the pier 1 Structure, a space is left between the inner side of the steel sleeve box 2 and the surface of the bridge pier 1, and a plurality of floating hydraulic cylinders 6 corresponding to the positions of each of the supporting hydraulic cylinders 3 are installed in this space. The supporting hydraulic cylinders 3 and the floating hydraulic cylinders 6 of the layers are distributed symmetrically with the bridge pier 1 as the center, respectively. The blue-shaped gasket 63 is in indirect contact with the surface of the bridge pier 1. The gasket 63 arranged between the head of the piston rod 62 of the floating hydraulic cylinder 6 and the surface of the bridge pier 1 ...

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Abstract

The invention relates to a safety protection device for a bridge pier. The safety protection device comprises a steel boxed cofferdam arranged at the periphery of the bridge pier and a hydraulic station fixed opposite to the steel boxed cofferdam. The steel boxed cofferdam is provided with a plurality of supporting hydraulic cylinders at least on the side close to a channel, wherein the cylinder body of each supporting hydraulic cylinder is fixed opposite to the steel boxed cofferdam; the head of a piston rod of each supporting hydraulic cylinder is exposed from the outer surface of the steel boxed cofferdam; a rodless cavity of each supporting hydraulic cylinder is communicated with the hydraulic station through a hydraulic pipeline; and the rodless cavities, the hydraulic pipelines and the hydraulic stations of all the supporting hydraulic cylinders are filled with a hydraulic medium so as to form a sealed hydraulic system. Compared with the prior art, the impact resistance of the bridge pier is greatly enhanced through the device of the invention; and the kinetic energy of an offending ship can be absorbed and converted into hydraulic energy for storage, so that the offending ship is quickly speeded down to reduce the kinetic energy, and the resultant force borne by the bridge pier tends to zero to protect the bridge pier.

Description

technical field [0001] The invention relates to the technical field of bridge protection, in particular to a safety protection device for bridge piers. Background technique [0002] With the continuous development of the transportation industry, a large number of cross-sea and river-crossing bridges have been built continuously. The rivers and sea areas where such bridges are located are mostly busy waterways, and their currents, waves, wind and waves are complicated, and bridges inevitably bear certain risks of ship collision. When the pier of the bridge is rubbed or hit by the ship, even if the speed of the ship is very slow, due to the large mass of the ship itself, the momentum of the ship is large. According to the momentum theorem: mv1-mv2=FΔt, when the ship hits the pier, Δt is In an instant, the impact force is also huge, and damage to the bridge occurs from time to time. [0003] At present, in many sea-crossing bridges, anti-collision boxes, or double-wall anti-c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/02
CPCE01D19/02
Inventor 杨光华
Owner 杨光华
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