RU67590U1 - ANTI-ICE PROTECTIVE BARRIER - Google Patents

Abstract

The utility model is aimed at reducing the load of ice piles by reducing the angle of inclination of the inclined beam and increasing the area of the protective barrier. The specified technical result is achieved by the fact that the ice barrier contains two rows of piles and an inclined beam. The protective barrier piles are staggered, the inclined beam is supported on the pile heads, the mark of the second row pile head being at the maximum HC water level mark during the ice drift, and the first row pile mark at the lower ice surface mark during the ice drift, forming an angle of inclination β inclined beam. The supporting platforms of the inclined part of the inclined beam are designed so that they should cover the range of fluctuations in water levels. At least two inclined beams are installed on each pile of the protective barrier. The piles of the protective barrier staggered are made with the possibility of their use as part of the enclosing barrier.

Description

The utility model relates to the field of hydraulic engineering and can be used to destroy ice in the waters of freezing reservoirs, as well as to protect a marine floating drilling rig from ice during the winter and during ice drift.

A device is known for protecting the sea support from ice, comprising a beam located between the side stops on a support buried in the bottom of the water area, a damping device, a source of compressed gas, a hydraulic accumulator controlled by a pneumatic valve, a check valve, a valve, a hydraulic line, and hinges. The damping device is made in the form of a hydraulic cylinder, the housing of which is pivotally connected to a support. The beam is installed at an acute angle to the support and is pivotally fixed at one end to the bottom of the water area, and pivotally connected to the hydraulic cylinder rod with the other (USSR AC No. 1587133, ЕОВВ 15/02, 1990).

The disadvantages of the analogue is that the technology of protecting the sea support is unnecessarily complicated, the inclined part of the sea support changes the angle of inclination and breaks the ice, creating an effort to break the ice, since the higher the angle of inclination, the greater the effort is required, therefore, the large angles of inclination of the sea support require reinforcement of the entire structure, which could be performed more economically and at lower cost, and the presence of a damping device complicates the design.

The closest to the proposed technical solution is an ice barrier consisting of two rows of piles with a 60 ° inclined beam oriented in different directions, the space between the rows of piles is filled with broken ice, the span between vertical piles is tightened with a net (17 ^th International Symposium on Ice Saint Petersburg, Russia, 21-25 June 2004 International Association of Hydraulic Engineering and Research, c. 127, fig. 6).

Significant disadvantages of the prototype is that the angle of 60 ° gives high values of ice loads on the piles, and the presence of the grid forms a continuous structure, as a result of which ice loads also increase.

The technical task of the proposed utility model is to reduce the load of ice piles by reducing the angle of inclination of the inclined beam and increasing the area of the protective barrier.

This problem is solved in that in the anti-ice protective barrier containing two rows of piles and an inclined beam according to this technical solution, the piles of the protective barrier are staggered, the inclined beam is supported on the pile heads, and the mark of the pile head of the second row is at the maximum water level during the ice drift, and the mark of the head of the piles of the first row at the mark of the lower surface of the ice during the ice drift, forming the angle of inclination β of the inclined beam.

In addition, the claimed technical solution has optional features characterizing its particular cases, specific forms of its material embodiment, or special conditions for its use, namely:

- supporting platforms of the inclined part of the inclined beam are made so that they must cover the range of fluctuations in water levels;

- at least two inclined beams are installed on each pile of the protective barrier;

- piles of the protective barrier located in a checkerboard pattern are made with the possibility of their use as part of the enclosing barrier.

Distinctive features of the proposed anti-ice protective barrier from the above known, closest to it, is that the piles of the protective barrier are staggered. The inclined beam rests on the heads of piles of the first and second row. The mark of the head of the piles of the second row is at maximum

the level of HC water during the ice drift, forming an angle of inclination β of the inclined beam, smaller than the same angle when installing piles in two in two rows.

The claimed utility model is illustrated by drawings. Figure 1 shows the checkerboard pattern of piles of an anti-ice protective barrier, top view. Figure 2 is a view A of figure 1.

Where 1 is a pile of the first row,

2 - inclined beam,

3 - adjacent pile of the second row,

4 - ice

Δh is the difference in elevations of the heads of piles of the first and second row,

and - the distance between the piles in a row.

Anti-ice protective barrier works as follows.

Ice 4 brought by the stream V of the water flow to the protective barrier creeps onto the inclined beams 2, breaks by bending and falls under the influence of gravity between the piles 1 of the first row, forming an ice barrier.

At small angles of inclination of the inclined beams 2 of about 15-17 °, ice 4 can, without breaking, bend around the protective barrier and be carried away with the stream.

Thus, the proposed device can significantly reduce the load of ice on the piles and, as a result, ensure the reliability of the entire structure.

Claims (4)

1. An anti-ice protective barrier comprising two rows of piles and an inclined beam, characterized in that the piles of the protective barrier are staggered, the inclined beam is supported on the heads of piles buried in the bottom of the water area, and the mark of the head of piles of the second row is at the maximum water level during the ice drift, and the mark of the head of the first row piles at the mark of the lower surface of the ice, during the ice drift, forming the angle of inclination β of the inclined beam. 2. The anti-ice protective barrier according to claim 1, characterized in that the supporting platforms of the inclined part of the inclined beam must cover the range of fluctuation of water levels. 3. The anti-ice protective barrier according to claim 1, characterized in that at least two inclined beams are installed on each pile of the protective barrier. 4. The anti-ice protective barrier according to claim 1, characterized in that the piles of the protective barrier located in a checkerboard pattern are made with the possibility of their use as part of the enclosing barrier.