筒型基础负压沉贯中的动态物性参数  

Dynamic Physical Parameters of Bucket Foundation Suction Penetration

作　　者：丁红岩[1] 李阳[1] 张超[1] 

机构地区：[1]天津大学建筑工程学院,天津300072

出　　处：《天津大学学报》2007年第1期9-13,共5页Journal of Tianjin University(Science and Technology)

基　　金：国家自然科学基金资助项目(50079016).

摘　　要：为研究筒型基础内海积土的物性参数,结合筒内沉贯土层性质及沉贯环境,应用J2流动理论和各向同性硬化原理计算沉贯过程中土颗粒的应变,考虑到土中出现贯通裂隙,应用离散元方法计算土体骨架应变．结合土颗粒和土体骨架应变,从土的孔隙率和渗透率的定义出发,推导出沉贯过程中筒内海积土物性参数的动态模型．最后,通过实例计算验证了模型和计算过程的正确性．The dynamic physical parameters were studied for design and construction of bucket foundation, According to the qualities of and the conditions around the bucket foundation penetrated soil, the strain of penetrative marine soft clay were calculated by J2 flow theory and isotropic hardening theory. In consideration of the penetrative cranny in the soil, the volumetric strain model was established by discrete element method. According to the strains of penetrative marine soft clay and the volumetric strain, based on the definition of permeability and porosity, dynamic models of physical parameters were established. And the correctness of the models is proved by an example.

关 键 词：筒型基础 海积土 J2流动理论 离散元法 物性参数 

分 类 号：TU470[建筑科学—结构工程]