ABSTRACT The sea oil&gas production offshore platforms exploited in the freezing seas with a severe ice regime are exposed to the considerable dynamic impacts from a drifting ice cover. One of difficult and little-studied problems in world practice of designing and exploration of such struc-tures is abrasive action of ice on a material of the platform's body in the area of variable water level. Thus physical and mechanical properties of ice are one of the important factors influencing abrasion process.
The purpose of the paper is the experimental studying of physical and mechanical properties of artificially grown modeling ice under various conditions of its fabrication in ice laboratory.
In order to achieve this purpose, the authors solve the following tasks in the paper:–development of a technique and technology of fabrication of modeling ice blocks;
–experimental research of physical and mechanical properties of modeling ice at various loading rates and temperatures;
–analysis and statistical treatment of results of experimental inves-tigations of physical and mechanical properties of modeling ice;
–experimental determination of concrete resistance and intensity of an abrasive wear of an icebelt material.
As a result of the carried out tests, distribution of salinity, density and ice structure on a thickness of the block of modeling ice are received, and also strength on the uniaxial compression at various loading rates and temperatures are described. From results of experimental investiga-tions of the abrading effect of modeling ice on concrete samples the sum polygon of specific abrasion was obtained and comparative calcu-lations of the abrasion depth an of a structure material according to different authors were made.
INTRODUCTION The problem of ice abrasion of construction structures is known for a long time in connection with bridge engineering, building of weirs, culverts, and transport facilities in the northern areas.