摘要
采用线弹性断裂力学的方法,针对气候影响下的膨胀土开裂问题,提出了膨胀土开裂深度和裂缝间距的定量表达式,经比较与现场实测结果基本一致。并对开裂深度与泊松比、断裂韧度、基质吸力等土体特性参数的关系进行了详细的论述。
With the method of lineal elastic fracture mechanics, the cracking depth and spacing of expansive soil due to climatic condition are presented according to the site test results. At the same time, the relationship between cracking depth of expansive soil and soil parameters, such as Poisson＇ s ratio, fracture toughness and matrix suction, are detailed discussed.
关键词
膨胀土
土体开裂
基质吸力
线弹性断裂力学
expansive soil, soil cracking behavior, matrix suction, lineal elastic - fracture mechanics （LEFM）
