摘要
采用工程上通用的土力学模型,考虑饱和度对球空腔动力响应的影响,利用Laplace变换求解了弹性准饱和土中球空腔的动力响应问题,得到了变换域内的解析解。借助数值Laplace反变换,数值分析了弹性准饱和土中球空腔动力响应的位移、应力及孔压的变化规律。为分析地下结构动力响应提供了一种有效的方法,模型符合工程实际,有一定的工程应用价值。
The generally-adopted soil model in engineering was adopted for analysing the dynamic response of the spherical cavity in nearly saturated elastic soils. The analytic solution in transformed domain was obtained by the method of Lapace transformation, and numerical results were presented through Laplace inversion. The displacements, stresses and pore water pressure were investigated during the response and compared with the elastic case, and some features of the problem were revealed. The model is applicable for engineering practice and provides an effective method for analysing the similar problem about dynamic response of underground structure.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2005年第8期934-938,共5页
Chinese Journal of Geotechnical Engineering
基金
国家自然科学基金资助项目(50478081)
关键词
弹性
准饱和土
球空腔
动力响应
elastic
nearly saturated soils
spherical cavity
dynamic response
