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
• 负责人: Ahmed Elgamal
• 金额: $ 22万
• 依托单位: University of California-San Diego
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-08-01 至 2005-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0200510&HistoricalAwards=false
• 关键词: Collaborative; Research; Full; Size; Experiments

This research effort aims to study experimentally the effect of earthquake-induced lateral spreading due to liquefaction on pile foundations, both in full size and centrifuge model conditions. Comparable tests of instrumented single piles and pile groups embedded in 1-and 2-layer soil profiles will be conducted in slightly inclined laminar boxes subjected to base shaking at three facilities: 1) The 100g-ton geotechnical centrifuge, laminar box and in-flight shaker at RPI, 2) The 6m high laminar box and 1g shaking table at NIED, Japan (largest laminar box in the world), and 3) the 1.9m high laminar box and 1g shaking table at UCSD (largest laminar box in the US). Taking advantage of the successful experience at RPI in this kind of testing, this research constitutes the first opportunity for direct comparison of results in controlled experimental environments between centrifuge and full sized tests to be conducted at NIED. Additionally, centrifuge and full size NIED results will be used to validate the medium-size experiments to be performed using the UCSD shaking table and laminar box. Advanced data analysis techniques-including system identification and visualizations-will be used to process and compare the results from the three facilities, with engineering interpretations and computer simulations.

这项研究工作旨在通过实验研究地震诱导的由于液化引起的侧向扩散的影响，无论是在全尺寸还是离心机模型条件下，无论是在桩基础上。 Comparable tests of instrumented single piles and pile groups embedded in 1-and 2-layer soil profiles will be conducted in slightly inclined laminar boxes subjected to base shaking at three facilities: 1) The 100g-ton geotechnical centrifuge, laminar box and in-flight shaker at RPI, 2) The 6m high laminar box and 1g shaking table at NIED, Japan (largest laminar box in the世界）和3）UCSD（美国最大的层流盒）的1.9m高层流盒和1克摇桌。 利用RPI在这种测试中的成功经验，这项研究构成了直接比较在NIED进行的离心机和全尺寸测试中受控的实验环境中结果的机会。 此外，离心机和全尺寸NIED结果将用于验证使用UCSD摇桌和层流盒进行的中型实验。 先进的数据分析技术 - 包括系统识别和可视化措施将使用工程解释和计算机模拟处理和比较三个设施的结果。