详情

Shaking Table Testing to Evaluate Effectiveness of Vertical Drains for Liquefaction Mitigation

项目名称：	Shaking Table Testing to Evaluate Effectiveness of Vertical Drains for Liquefaction Mitigation
摘要：	Although blast liquefaction studies have shown that vertical drains greatly increase the rate of drainage under field conditions, they have not prevented liquefaction. In addition, it is difficult to compare pore pressure development during blasting and an earthquake. At present, no direct field or laboratory data is available to confirm whether or not the drains have the ability to limit pore pressures and resulting settlement to acceptable levels. However, shaking table tests can be conducted with a large shear box (20 ft high, 9 ft wide, 16 ft long) containing drains at State University of New York (SUNY), Buffalo and compared with identical testing currently underway for another funded study. Tests will be performed at progressively higher acceleration levels and durations to allow comparison of performance (pore pressure & settlement) for earthquake conditions. Perform shaking table tests on sandy soils with vertical drains installed to confirm whether or not the drains have the ability to limit pore pressures and resulting settlement to acceptable levels during the earthquake event. Three objectives are outlined for this study: (1) Evaluate the ability of vertical drains to prevent liquefaction during an earthquake event as a function of acceleration and duration. (2) Compare settlement of treated sand relative to untreated soil when subjected to shaking and drained with vertical drains. (3) Evaluate the accuracy of simple models and computer models to predict measured behavior.
状态：	Active
资金：	115000
资助组织：	Alaska Department of Transportation and Public Facilities<==>California Department of Transportation<==>Utah Department of Transportation<==>South Carolina Department of Transportation<==>New York State Department of Transportation
项目负责人：	Stevens, David
执行机构：	Brigham Young University
开始时间：	20130501
实际结束时间：	20180930
主题领域：	Bridges and other structures；Geotechnology；Highways