摘要
振动台模型试验是研究地震作用下土-结构动力相互作用的重要方法,而土箱的性质将直接影响到试验结果的可靠性。在总结国内外研制土箱经验的基础上,研制出刚度可调的多功能叠层剪切箱。该剪切模型箱可完成单向和多向振动台土-结构动力相互作用试验;针对不同试验中所选择的模型土种类的不同,本剪切模型箱可调整水平向剪切箱刚度,以更好地模拟水平场地边界效应问题。通过全黏土层中三层三跨地下结构试验验证剪切模型箱模拟水平场地边界效应问题;并通过砂土夹层中三层三跨地下结构试验,验证本剪切箱能够较好地完成三维土-结构相互作用振动台试验。
Shaking table test is an important method to study soil-structure dynamic interaction. The property of soil container directly affects the accuracy of test result. So a multifunctional laminar shear container is firstly designed for shaking table test after summarizing development experience of soil container at home and aboard. The multifunctional laminar shear container can be used to do one-dimensional, two-dimensional and threedimensional shaking table test. Meanwhile, the stiffness of soil container could be adjusted according to type of model soil, which is applicable to decrease boundary effect. Then a shaking table test on soil-underground structure dynamic interaction, of which the structure laying in clay is conducted. The test results show that the soil container can eliminate the boundary effect when the dynamic load is applied to only one horizontal direction. Results of another shaking table test on three-dimensional soil-underground structure dynamic interactions, of which the structure laying in clay with laminated sand show that the soil container eliminates boundary effect quite well in two mutually perpendicular horizontal.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2011年第12期2498-2506,共9页
Chinese Journal of Rock Mechanics and Engineering
基金
中国地震局公益性行业科研专项课题(200808022)
关键词
土力学
叠层剪切箱
振动台试验
边界效应
刚度
土-结构动力相互作用
soil mechanics
laminar shear container
shaking table test： boundary effect
stiffness
soil-structure dynamic interaction
