The lengthwise cracks caused by frost heave,and settlem ent, bulge, rut caused by spring thaw are the main forms of frost damage of roa ds in seasonally frozen soil region.

• 冻胀形成的纵向裂缝和道路翻浆导致的沉陷鼓包及车辙变形是季节冻土区高速公路路基冻害的主要形式。