海冰-结构的动力相互作用、冰激振动及冰载荷的识别问题，仍是目前工程海冰界的核心和热点问题。
Dynamic interactions of sea ice with offshore structures, ice-induced vibrations and ice loads identification, are still the hot and key problems in ice engineering.
可能受到振动、波动载荷、冲击载荷或动力载荷的内部螺栓应加以保护防止松动。可采用双螺母、防松动垫圈、点焊等。
Internal bolts subject to vibration, fluctuating load, impact load or dynamic load shall be protected against loosening. Double nuts, unti-loose washers, tack welding, etc. shall be used.
工程结构在服役期间不可避免地受到各种复杂的振动、冲击载荷的作用，动力损伤或破坏是其主要的失效形式。
Structure at work was affected by vibration and impact loads inescapability. So, dynamic damage and destroy is the primary failure mode of structure.
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