Geosynthetics for Foundation and Soil Isolation in Earthquake Hazard Mitigation

防震减灾中用于地基和土壤隔离的土工合成材料

基本信息

  • 批准号:
    9634747
  • 负责人:
  • 金额:
    $ 17.02万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    1997
  • 资助国家:
    美国
  • 起止时间:
    1997-10-01 至 2001-09-30
  • 项目状态:
    已结题

项目摘要

ABSTRACT: CMS-9634747, Mishac Yegian, Northeastern U Under dynamic excitation, slip deformations occur along a smooth geosynthetic interface, thus reducing the energy transmitted through the interface. As a result, geosynthetic liners placed under the foundation of a constructed facility can absorb seismic energy, and hence transmit smaller ground motions to the overlying structure. This concept of using geosynthetics for Foundation Isolation is similar to mechanical isolators used in structural engineering. In addition, using geosynthetic liners at different depths within new slopes, embankments or hydraulic fills -- known to be extremely vulnerable to liquefaction -- can reduce the soil amplification effect on the ground motion, and the liquefaction potential of loose fills. This concept is referred to as Soil Isolation. This research program investigates, through experimental and analytical work, the technical feasibility, practicality, and limitations of using geosynthetics for foundation and soil isolation to mitigate earthquake hazard. The scope of this research includes shaking table tests on geosynthetics that show the best promise for foundation and soil isolation. The experimental results are used to develop and validate constitutive models that describe the dynamic response of geosynthetic interfaces. Model tests on buildings, fluid retaining structures and soil profiles are conducted using a shaking table, and the results used to develop procedures for the analysis of the dynamic response of structures and soil profiles that are isolated using geosynthetic liners. The results are used to identify areas of need for further investigation that will help to transfer the research results to engineering practice. The innovative concept of using geosynthetics to reduce earthquake ground motion intensity, and to reduce liquefaction potential, can be extremely cost effective and a simpler alternative to conventional earthquake hazard mitigation me asures.
摘要:CMS-9634747,美国东北部Mishac Yegian 在动态激励下,滑动变形发生沿着一个光滑的土工合成材料界面,从而减少了通过界面传递的能量。因此,放置在已建设施地基下的土工合成衬垫可以吸收地震能量,从而将较小的地面运动传递到上覆结构。使用土工合成材料进行基础隔离的概念类似于结构工程中使用的机械隔离器。此外,在新的斜坡、斜坡或水力填土(已知极易发生液化)的不同深度使用土工合成衬垫,可以减少土壤对地面运动的放大效应,以及松散填土的液化潜力。这个概念被称为土壤隔离。 本研究计划调查,通过实验和分析工作,技术的可行性,实用性和限制使用土工合成材料的基础和土壤隔离,以减轻地震灾害。 这项研究的范围包括土工合成材料的振动台试验,显示了最好的基础和土壤隔离的承诺。实验结果被用来开发和验证本构模型,描述土工合成材料接口的动态响应。使用振动台对建筑物、挡水结构和土壤剖面进行模型试验,并将结果用于开发使用土工合成衬垫隔离的结构和土壤剖面的动态响应分析程序。 结果用于确定需要进一步调查的领域,这将有助于将研究结果转移到工程实践中。 使用土工合成材料来降低地震地面运动强度和减少液化可能性的创新概念可以是非常具有成本效益的,并且是传统地震灾害减轻措施的更简单的替代方案。

项目成果

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M. K. Yegian其他文献

M. K. Yegian的其他文献

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{{ truncateString('M. K. Yegian', 18)}}的其他基金

Field Application of Induced Partial Saturation (IPS) for Liquefaction Mitigation
诱导部分饱和 (IPS) 液化缓解的现场应用
  • 批准号:
    1633970
  • 财政年份:
    2016
  • 资助金额:
    $ 17.02万
  • 项目类别:
    Standard Grant
NEESR: Induced Partial Saturation (LPS) Through Transport and Reactivity for Liquefaction Mitigation
NEESR:通过传输和反应性诱导部分饱和(LPS)以缓解液化
  • 批准号:
    1134940
  • 财政年份:
    2011
  • 资助金额:
    $ 17.02万
  • 项目类别:
    Standard Grant
SGER: Development of Field Delivery System of Oxygen Bubbles for Seismic and Geoenvironmental Hazard Mitigation
SGER:开发用于减轻地震和地质环境灾害的氧气气泡现场输送系统
  • 批准号:
    0917750
  • 财政年份:
    2009
  • 资助金额:
    $ 17.02万
  • 项目类别:
    Standard Grant
Collaborative Research: The Learning Bridge
合作研究:学习桥梁
  • 批准号:
    0855374
  • 财政年份:
    2009
  • 资助金额:
    $ 17.02万
  • 项目类别:
    Standard Grant
Liquefaction Mitigation Using Entrapped Air
使用截留空气缓解液化
  • 批准号:
    0509894
  • 财政年份:
    2005
  • 资助金额:
    $ 17.02万
  • 项目类别:
    Continuing Grant
SGER: Air Entrapment for Liquefaction Mitigation
SGER:用于缓解液化的空气滞留
  • 批准号:
    0234365
  • 财政年份:
    2002
  • 资助金额:
    $ 17.02万
  • 项目类别:
    Standard Grant
Seismic Response of Geosynthetic/Soil Systems
土工合成材料/土壤系统的地震响应
  • 批准号:
    9402250
  • 财政年份:
    1994
  • 资助金额:
    $ 17.02万
  • 项目类别:
    Standard Grant
Dynamic Shear Properties of Geosynthetics Interfaces Relevant to Earthquake Hazard Mitigation
与减灾相关的土工合成材料界面的动态剪切特性
  • 批准号:
    9113177
  • 财政年份:
    1992
  • 资助金额:
    $ 17.02万
  • 项目类别:
    Standard Grant
Geotechnical Aspects of the December 7, 1988 Armenian Earthquake
1988 年 12 月 7 日亚美尼亚地震的岩土工程问题
  • 批准号:
    8915565
  • 财政年份:
    1990
  • 资助金额:
    $ 17.02万
  • 项目类别:
    Standard Grant
Intergrated Seismic Risk Analysis for Earth Dams
土坝地震风险综合分析
  • 批准号:
    8412124
  • 财政年份:
    1985
  • 资助金额:
    $ 17.02万
  • 项目类别:
    Continuing Grant

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