CAREER: Characterization and Modeling of Marine Clays for Slope Stability
职业:海洋粘土的边坡稳定性表征和建模
基本信息
- 批准号:0449021
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2005
- 资助国家:美国
- 起止时间:2005-06-01 至 2012-05-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Increasing attention is being focused on the problem of submarine slope stability. The global economy requires a better, wider reaching infrastructure, able to quickly distribute resources, such as oil and gas, from the point of production to the points of use. An expanding network of telecommunication cables cross the ocean floors and breakages caused by slope failures would interrupt or delay the flow of information around the world. Large submarine slides can cause tsunamis, which can be devastating for the coastal communities in the wave's path.This research contributes to the understanding of failure mechanisms for submarine slopes in soft marine sediments subjected to dynamic loading. One of the primary goals is to develop an extensive database of soil behavior in simple shear, specifically targeting offshore clays from the Gulf of Mexico and off the coast of West Africa. The experimental results are obtained using a new advanced testing device, which has been specifically constructed for multidirectional loading at a wide range of frequencies. The testing is used to characterize the response of the soils subjected to different initial and drainage conditions, and a variety of loading paths, replicating more closely the effects of earthquakes or storm waves. The importance of strain rate on the behavior of soft clays is also investigated. The test results are essential for the refinement and validation of a constitutive model, able to replicate the response of the marine clays, and implemented in a finite element program for the analysis of submarine slope response. The importance of the different factors contributing to the triggering of failures is investigated through parametric studies. The predictive tools are validated through the study of selected case histories. The broader impacts of this work include increasing awareness among students and the general public of how earthquakes affect soils, and how ground shaking is also changed by the soils. Undergraduate students are involved in building visualization tools targeting users at different levels of ability, using the model developed by the graduate students. The activities also involve development of educational materials integrating research into the teaching of math and science, and the training of teachers, through a Research Experience for Teachers Program and in collaboration with the South Texas Rural Systemic Initiative. The research is introduced in courses at the undergraduate and graduate level. The PI, in partnership with the Forth Worth Museum of Science and History, is developing an exhibit on natural hazards.
海底斜坡的稳定性问题日益受到人们的关注。 全球经济需要更好、更广泛的基础设施,能够快速将石油和天然气等资源从生产点分配到使用点。 跨越海底的电信电缆网络不断扩大,斜坡坍塌造成的断裂将中断或延迟世界各地的信息流动。 大型海底滑坡会引起海啸,海啸对波浪路径上的沿海社区具有毁灭性的影响,这项研究有助于了解软海洋沉积物中海底边坡在动力荷载作用下的破坏机制。 主要目标之一是开发一个简单剪切下土壤行为的广泛数据库,特别针对墨西哥湾和西非海岸的近海粘土。 实验结果是使用一种新的先进的测试设备,它已被专门构造为多方向加载在很宽的频率范围内。 该测试用于表征土壤在不同初始和排水条件下的响应,以及各种加载路径,更紧密地复制地震或风暴波的影响。 应变速率对软粘土的行为的重要性也进行了研究。 试验结果是必不可少的本构模型的细化和验证,能够复制的海洋粘土的响应,并在有限元程序中实施的海底斜坡响应的分析。 通过参数研究的重要性,不同因素的触发故障。 通过对选定案例的研究,验证了预测工具。这项工作的更广泛的影响包括提高学生和公众对地震如何影响土壤以及土壤如何改变地面震动的认识。 本科生参与构建可视化工具,针对不同能力水平的用户,使用研究生开发的模型。 这些活动还涉及编写教材,将研究纳入数学和科学教学,并通过教师研究经验方案并与南德克萨斯农村系统倡议合作培训教师。 这项研究在本科和研究生课程中介绍。 PI与Forth Worth科学和历史博物馆合作,正在开发一个关于自然灾害的展览。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Giovanna Biscontin其他文献
Effects of stress state during fluid injection fracturing experiments in weakly cemented porous media
弱胶结多孔介质中流体注入压裂实验过程中应力状态的影响
- DOI:
10.1016/j.engfracmech.2025.111016 - 发表时间:
2025-05-02 - 期刊:
- 影响因子:5.300
- 作者:
Charalampos Konstantinou;Ramesh Kannan Kandasami;Giovanna Biscontin;Panos Papanastasiou - 通讯作者:
Panos Papanastasiou
A Numerical Characterisation of Unconfined Strength of Weakly Consolidated Granular Packs and Its Effect on Fluid-Driven Fracture Behaviour
- DOI:
10.1007/s00603-022-02885-w - 发表时间:
2022-05-12 - 期刊:
- 影响因子:6.600
- 作者:
Paula A. Gago;Charalampos Konstantinou;Giovanna Biscontin;Peter King - 通讯作者:
Peter King
Understanding clogging mechanisms in filter media: An integration of laboratory findings and theoretical perspectives
- DOI:
10.1016/j.seppur.2024.130602 - 发表时间:
2025-06-22 - 期刊:
- 影响因子:
- 作者:
Gianmario Sorrentino;Kuhan Chellappah;Giovanna Biscontin - 通讯作者:
Giovanna Biscontin
Fluid Injection Under Differential Confinement
- DOI:
10.1007/s11242-021-01692-1 - 发表时间:
2021-09-30 - 期刊:
- 影响因子:2.600
- 作者:
Charalampos Konstantinou;Ramesh Kannan Kandasami;Christopher Wilkes;Giovanna Biscontin - 通讯作者:
Giovanna Biscontin
Giovanna Biscontin的其他文献
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{{ truncateString('Giovanna Biscontin', 18)}}的其他基金
NEESR-CR: Capacity and Performance of Foundations for Offshore Wind Towers
NEESR-CR:海上风塔基础的能力和性能
- 批准号:
1041604 - 财政年份:2011
- 资助金额:
-- - 项目类别:
Standard Grant
NEESR-II: In Situ Determination of Soil Modulus and Damping as a Function of Level of Strain
NEESR-II:现场测定土壤模量和阻尼与应变水平的关系
- 批准号:
0421275 - 财政年份:2004
- 资助金额:
-- - 项目类别:
Standard Grant
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