The way to create an ice load-carrying platform

 

(57) Abstract:

The invention relates to letterlike and can be used to create platforms on the ice surface, designed for transport and/or storage of goods. The way to create an ice load-carrying platform contains clear ice from snow. Then on the ice surface forming ribs by forming grooves of infinite length depth, smaller ice thickness at least in one direction. Then the ice surface is exposed to low temperature (t<0C) within the time required for the formation of growths under the ice in places making grooves with a thickness equal to the thickness of the ice. Then in the same places again produce the production of the groove depth, the smaller the thickness of the growth, and of a width not exceeding previous and re-exposed to low temperature (t<0C) during the time needed to increase the height of the knot on the depth of excavation. Technical result achieved in solving the problem of traffic safety on the platform and secure storage of the goods is to increase protonates when creating platforms on the ice surface, designed to transport and/ or storage of goods.

The prior art of the claimed invention known way to create a load-carrying platform on the ice surface, which consists in clearing ice from snow, leading to a decrease in water temperature and growth of ice thickness in place of clearing that allows safe movement of vehicles on the platform and/or store the goods ( Peschansky, I. C. Lagoudera and hladotehnika. - L.: Gidrometeoizdat, 1967, 461 S.).

The disadvantage of this method is the low growth rate of ice thickness.

The task of the claimed invention is to create an ice platform, ensuring safety for transport and secure storage of goods.

Technical result achieved when the task is to increase the carrying capacity of the ice platform.

This is achieved by increasing the rigidity of the ice surface due to the formation of ice grooves of infinite length in at least one direction, after which the ice surface is exposed to low temperature (t<0C) in the course of time, it is e which in the same places again produce the production of groove depth, smaller thickness of the growth, and of a width not exceeding previous and re-exposed to low temperature (t<0C) during the time needed to increase the height of the knot on the depth of excavation.

It is known that the load-carrying platform works on a bend. The stiffness of the load-carrying platform P in this case is determined by the following formula:

P=EIx, (1)

where E is the modulus of elasticity of ice;

Ix- moment of inertia of the cross section relative to the main Central axis perpendicular to the plane of bending moment

(Fedoseev Century. And. strength of materials - M.: Nauka. 1986, 512 S.).

To increase the load-carrying capacity of the ice platform is necessary to increase the rigidity of R. This can be achieved by increasing the moment of inertia Ixsince E=const. The moment of inertia Ixequal

(2)

where y is the vertical coordinate of elemental areas having a square dF;

F is the cross-sectional area

(Fedoseev Century. And. strength of materials - M.: Nauka. 1986, 512 S.)

The formula shows, the moment of inertia Ixcan be increased by increasing the vertical coordinate y or cross-sectional area F. Most effectively increase verm displacement of the center of gravity of the cross-section down. This can be achieved by bending the cross-section. In our case, this is similar to the frosting under the ice edges.

The essential features characterizing the invention:

- restrictive: clearing ice from snow;

distinctive: on the ice surface forming ribs by forming grooves of infinite length, depth, smaller ice thickness at least in one direction, after which the ice surface is exposed to low temperature (t<0C) within the time required for the formation of growths under the ice in places making grooves with a thickness equal to the thickness of the ice, and then in the same places again produce the production of the groove depth, the smaller the thickness of the growth, and of a width not exceeding previous and re-exposed to low temperature (t<0C) during the time needed to increase the height of the knot on the depth of excavation.

The invention is illustrated in the drawing.

The ice sheet 1, having a thickness H, at some distance from each other to form grooves 2, for example, using laboratroy machine. The height of the grooves h should not exceed the ice thickness H, the length of the grooves is measured divide grid. Then the resulting ice surface is exposed to low temperature (t<0C). In most cases, this may be the natural environment in the winter or areas of Land with high-temperature below 0oC. May, if necessary, to create conditions (t<0C) by artificial means.

By reducing the thickness of the ice on the value of h in places making grooves is lowering the temperature of the water. Under the influence of low temperature under the ice, in places workings of grooves are formed ice buildup 3 with a thickness of H1=H. Then, in the same places again produce the production of the groove depth h1, the smaller the thickness of the growth H1, and the width not more than the former. Then formed the icy surface is re-exposed to low temperatures. By reducing the thickness of the ice on the value of h1 in places making grooves again lowering the temperature of the water. Under the influence of low temperature, the thickness of the build-up of H2 will increase the depth of excavation h1 and will be equal to the ice thickness H3=H. Ice buildup scriplet cross-section of the ice plate, which leads to the displacement of its center of mass down and to increase the value of the vertical coordinate y alcoho result.

In addition, the claimed invention is achieved by an additional technical result consists in increasing the buoyancy of the carrying ice platform. This is achieved also ice growths that when your education displace water, increasing the static pressure on the lower surface of the ice cover.

The way to create an ice load-carrying platform, which consists in cleaning the ice from snow, characterized in that on the ice surface forming ribs by forming grooves of infinite length depth, smaller ice thickness at least in one direction, after which the ice surface is exposed to low temperature (t < 0oC) within the time required for the formation of growths under the ice in places making grooves with a thickness equal to the thickness of the ice, and then in the same places again produce the production of the groove depth, the smaller the thickness of the growth, and of a width not exceeding previous and re-exposed to low temperature (t < 0oC) during the time needed to increase the height of the knot on the depth of excavation.

 

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