Effect of Loading Rate on Lateral Pile-Soil Interaction in Sand Considering Partially Drained Condit

来源 :中国海洋工程(英文版) | 被引量 : 0次 | 上传用户:guoguo10
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Reliable assessment of the lateral pile-soil interaction is of pronounced importance for the design of mono-pile foundations of offshore wind turbines.As the offshore engineering moves to deeper waters,the diameter of monopiles is getting larger,usually about 5 m and could be up to 8 m,which may lead to partially drained behaviors of sand in the vicinity of the pile and thus imply limitations of conventional design methods in which fully drained conditions were assumed.To shed light on this issue,a fully-coupled finite element model was established using an in-house developed finite element code DBLEAVES,incorporating a cyclic mobility constitutive model that is capable of describing the instantaneous contractive and dilative response of sands simultaneously.Triaxial and centrifuge model tests were conducted to calibrate the constitutive model and validate the pile-soil interaction model respectively.This is followed by a parametric study primarly focusing on the effects of loading rates.The initial stiffness of thep-y curve was found to increase with the loading rate whilst the bearing capacity showed the inverse,and the mechanism behind this phenomenon is examined in detail.Then an explicit model was developed to evaluate the development of excess pore pressure in the pile front upon lateral loading,and an upper boundary of normalized loading rate was identified to distinguish fully and partially drained conditions.
其他文献
This paper proposes an equation to calculate breaking wave induced wave set-up and set-down along reef flat.The mathematical equation was derived based on the t
本文以初中英语阅读教学环节的设计优化为论述重点,阐述通过导学案引导,任务合作和总结反思来优化教学的重要作用。突出过程的互动和阅读理解反思,利于学生更好地主动发现问
她是一位低调的科学家,热爱学术,成就斐然,曾在法国居里研究所担任主任研究员多年,居里夫人是她的偶像。27年前,她走出清华园,留学法国。母校行胜于言的校风早已融入血液,她
“九天开出一成都,万户千门入画图.”这是古诗里的成都.“一年成聚,二年成邑,三年成都”,而后千年“城名未改,城址未变”,这是历史演绎里的成都.“要突出公园城市特点,把生态
期刊
凉山彝族自治州地域辽阔、河流纵横,地质环境极端脆弱,孕育着4031处地灾隐患点,时刻威胁着32万多群众的生命财产安全.面对如此艰巨而持久的地灾防治硬仗,全州自然资源系统戮
期刊
不动产统一登记的实施,不仅解决了企业和群众办证分头审批多头跑路的问题,同时有利于协助司法执行和保护不动产权利人合法权益.2014年7月30日,国务院总理李克强主持召开国务
期刊
Wave energy is a renewable source with significant amount in relation to the global demand.A good concept of a device applied to extract this type of energy is
当我们围绕“两个统一”的时代命题,熬尽心血、挥汗成雨,在脱贫攻坚、保障发展、保护资源中,竖起一座座丰碑、立下一个个标杆时,那些自然资源人,可爱的脸庞、倔强的背影、坚
期刊
1992年毕业于北京大学东语系日本文学专业,走出校门即自己创业。短短3年,她凭借自己的睿智与行动积累了千万财富,远远超越了自己最初设定的目标,创造了一个财富神话。1995年,
在英语教学中要让每个学生都学有所得,学有所用,要真正面向全体学生,我们可以用陶行知先生的“教学做合一”及“因材施教”教育教学理论来解决这一问题。一、教学做合一长期