Sustainability and Performance-Based Ground Stabilization Assessment

可持续性和基于性能的地面稳定评估

基本信息

  • 批准号:
    1201195
  • 负责人:
  • 金额:
    $ 34.11万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2012
  • 资助国家:
    美国
  • 起止时间:
    2012-07-15 至 2016-06-30
  • 项目状态:
    已结题

项目摘要

Sustainability is increasingly becoming a major concern in construction and development of the built infrastructure. Systematic inclusion of environmental impacts and life-cycle costs as metrics in performance-based engineering frameworks is a primary objective of this research. In order to develop the quantitative integrated elements of such a framework, attention is placed on ground improvement (stabilization) in seismic regions, as a representative geotechnical engineering area of major economic and environmental consequences. Researchers with complementary expertise from the University of California, San Diego (UCSD) and the University of Central Florida (UCF) are collaborating on this effort. The study will develop and implement for use an extended performance-based framework for ground improvement that incorporates economic impacts and carbon footprint metrics; advance the computational modeling capabilities related to the seismic performance of improved ground through calibration and verification using data from case histories and model testing; and report the probabilistic sustainability results in terms of risk/expense and carbon equivalent outcomes, suitable for decision-making considerations. In conducting this research, available data on the studied ground improvement techniques will be coalesced and analyzed. An existing soil constitutive model will be extended to more accurately capture post-liquefaction reconsolidation settlement behavior, based on a better understanding of the volumetric strain distribution and settlement patterns of the improved ground (including the influence of foundation loading on post-liquefaction settlement). The open source platform OpenSees will be employed for conducting the underlying Finite Element (FE) computations. A rigorous probabilistic performance-based engineering framework that integrally includes sustainability considerations will be developed and numerically implemented for ground improvement analysis and design. Building information modeling (BIM) techniques will be used to integrate geotechnical data, carbon-footprint, and spatial settlement scenarios with post-earthquake repair and sustainability metrics. Direct input from practitioners will guide all phases, with the overall goal of advancing the state-of-the-art and state-of-practice in ground improvement analysis and design. On this basis, different ground improvement options will be evaluated, towards the decision-support process. Finally, analysis and design tools based on this extended PBEE sustainability framework will be developed for efficient practical implementation.In parallel with the research tasks, a primary effort is made to maximize the impacts on education, outreach, and industry interaction. A small industry advisory board will provide guidance on the research program, and create field and office summer undergraduate student internship opportunities. Instructional seminars will be offered to practicing engineers on the background and use of the tools to be developed in this study.
可持续性日益成为已建成基础设施建设和发展中的一个主要问题。系统地将环境影响和生命周期成本作为衡量标准纳入基于绩效的工程框架是这项研究的主要目标。地震区作为具有重大经济和环境影响的代表性岩土工程地区,为了发展这一框架的定量综合要素,重点关注了地基加固(加固)。来自加州大学圣地亚哥分校(UCSD)和中佛罗里达大学(UCF)的研究人员拥有互补的专业知识,正在合作开展这项工作。这项研究将开发和实施一个扩展的基于绩效的地基改良框架,纳入经济影响和碳足迹指标;通过使用案例记录和模型测试的数据进行校准和验证,提高与改良地基抗震性能相关的计算建模能力;并报告风险/费用和碳当量结果方面的概率可持续性结果,以供决策考虑。在进行这项研究时,将对所研究的地基改良技术的现有数据进行汇总和分析。在更好地了解地基的体积应变分布和沉降规律(包括地基荷载对液化后沉降的影响)的基础上,对现有的土体本构模型进行扩展,以更准确地模拟液化后再固结沉降行为。开源平台OpenSees将用于进行底层有限元(FE)计算。将制定一个严格的、以概率为基础、以业绩为基础的工程框架,综合考虑可持续性因素,并以数字方式加以实施,以便进行地基改善分析和设计。建筑信息建模(BIM)技术将用于将岩土数据、碳足迹和空间定居情景与地震后修复和可持续性指标相结合。从业者的直接意见将指导所有阶段,总体目标是推动地基改善分析和设计方面的最先进和最先进的实践。在此基础上,将对不同的地基改善方案进行评估,以推动决策支持进程。最后,基于这个扩展的PBEE可持续性框架的分析和设计工具将被开发用于有效的实际实施。在研究任务的同时,主要努力最大化对教育、外展和行业互动的影响。一个小型的行业咨询委员会将为研究项目提供指导,并创造现场和办公室暑期本科生实习机会。将为实习工程师提供教学研讨会,介绍本研究将要开发的工具的背景和使用情况。

项目成果

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Ahmed Elgamal其他文献

Seismic performance evaluation of a pile-supported wharf system at two seismic hazard levels
两种地震危险等级下桩承式码头系统的抗震性能评估
  • DOI:
    10.1016/j.oceaneng.2020.108333
  • 发表时间:
    2020-11
  • 期刊:
  • 影响因子:
    5
  • 作者:
    Lei Su;Huaping Wan;Jinchi Lu;Xianzhang Ling;Ahmed Elgamal;Arul K. Arulmoli
  • 通讯作者:
    Arul K. Arulmoli
Finite Element Response Sensitivity Analysis of a Multi-Yield-Surface J2 Plasticity Model by Direct Differentiation Method
直接微分法多屈服面J2塑性模型的有限元响应灵敏度分析
Evaluation of structural condition using Wavelet transforms
使用小波变换评估结构状况
  • DOI:
  • 发表时间:
    2008
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Koichi Kusunoki;Ahmed Elgamal;Masaomi Teshigawara;Joel P. Conte
  • 通讯作者:
    Joel P. Conte
Seismic performance of U-shaped spillway retaining wall from shake table tests
  • DOI:
    10.1016/j.soildyn.2023.108020
  • 发表时间:
    2023-09-01
  • 期刊:
  • 影响因子:
  • 作者:
    Kyungtae Kim;Mokhtar A. Khalifa;M. Hesham El Naggar;Ahmed Elgamal
  • 通讯作者:
    Ahmed Elgamal
Seismic fragility analysis of pile-supported wharves with the influence of soil permeability
土体渗透率影响下桩承式码头地震易损性分析
  • DOI:
    10.1016/j.soildyn.2019.04.003
  • 发表时间:
    2019-07
  • 期刊:
  • 影响因子:
    4
  • 作者:
    Lei Su;Huaping Wan;Kaiming Bi;Yong Li;Jinchi Lu;Xianzhang Ling;Ahmed Elgamal;Arul K. Arulmoli
  • 通讯作者:
    Arul K. Arulmoli

Ahmed Elgamal的其他文献

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{{ truncateString('Ahmed Elgamal', 18)}}的其他基金

US-Egypt Cooperative Research: Seismic Risk Assessment of Wind Turbine Towers in Zafarana Wind Farm Egypt
美埃合作研究:埃及扎法拉纳风电场风力发电机塔架地震风险评估
  • 批准号:
    1445712
  • 财政年份:
    2014
  • 资助金额:
    $ 34.11万
  • 项目类别:
    Standard Grant
NEESR-II: A Seismic Study of Wind Turbines for Renewable Energy
NEESR-II:可再生能源风力涡轮机的地震研究
  • 批准号:
    0830422
  • 财政年份:
    2008
  • 资助金额:
    $ 34.11万
  • 项目类别:
    Standard Grant
Collaborative Research: Full Size Experiments and Centrifuge Physical Models of Pile Foundations Subjected to Lateral Spreading: Comparative Study and Engineering Interpretation
合作研究:横向扩展桩基的全尺寸试验和离心机物理模型:比较研究和工程解释
  • 批准号:
    0200510
  • 财政年份:
    2002
  • 资助金额:
    $ 34.11万
  • 项目类别:
    Standard Grant
ITR: Collaborative Research: An Integrated Framework for Health Monitoring of Highway Bridges and Civil Infrastructure
ITR:合作研究:公路桥梁和民用基础设施健康监测的综合框架
  • 批准号:
    0205720
  • 财政年份:
    2002
  • 资助金额:
    $ 34.11万
  • 项目类别:
    Continuing Grant
Interactive Web-Based Experimental and Computational Learning Environments for Earthquake Engineering Research and Education
用于地震工程研究和教育的基于网络的交互式实验和计算学习环境
  • 批准号:
    0088130
  • 财政年份:
    2000
  • 资助金额:
    $ 34.11万
  • 项目类别:
    Standard Grant
Collaborative Research; ParCYCLIC: Internet-Enabled Simulation of Earthquake Liquefaction Response on Parallel Computers
合作研究;
  • 批准号:
    0084616
  • 财政年份:
    2000
  • 资助金额:
    $ 34.11万
  • 项目类别:
    Standard Grant
Equipment for UCSD Geotechnical Centrifuge Laboratory
加州大学圣地亚哥分校岩土离心机实验室设备
  • 批准号:
    9987827
  • 财政年份:
    2000
  • 资助金额:
    $ 34.11万
  • 项目类别:
    Standard Grant
Analysis of Hualien Downhole Seismic Records
花莲井下地震记录分析
  • 批准号:
    9527375
  • 财政年份:
    1995
  • 资助金额:
    $ 34.11万
  • 项目类别:
    Standard Grant
Identification and Modeling of Earthdam Response During Northridge, January 17, 1994 and Previous Earthquakes
1994 年 1 月 17 日北岭地震和之前地震期间的土坝响应识别和建模
  • 批准号:
    9416248
  • 财政年份:
    1994
  • 资助金额:
    $ 34.11万
  • 项目类别:
    Standard Grant
REG: Equipment for Contruction of Soil Models for Geotechnical Centrifuge Testing
REG:用于土工离心机测试的土壤模型构建设备
  • 批准号:
    9311277
  • 财政年份:
    1994
  • 资助金额:
    $ 34.11万
  • 项目类别:
    Standard Grant

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