详情

Improved Stability and Consolidation Assessment of Embankments

项目名称：	Improved Stability and Consolidation Assessment of Embankments
摘要：	The current method of assessing embankment and foundation stability used by the Utah Department of Transportation (UDOT) and its designers is based on total stress concepts and undrained shear strength theory. However, such methods do not couple pore water pressure generation with the consolidation process and account for gains in shear strength due to pore pressure dissipation in finely bedded soils, such as the Lake Bonneville sediments. This research is geared toward developing the laboratory test procedures, requisite soil properties, in situ techniques, analysis and evaluation approach, and construction monitoring program to implement fully-coupled effective stress evaluations for consolidation and stability assessments of UDOT embankments constructed atop soft foundation soils. Two research sites are associated with this project: (1) an embankment for the SR-77/400 South bridge at approximately 1500 West in Springville, Utah, and (2) embankments at the new I-15 South Layton interchange in Layton, Utah. Construction and post-construction monitoring of embankments at these sites is included in the research scope and will provide data for the analyses to be performed. The overall objectives of this study are as follows: (1) recommend an appropriate fully-coupled soil model to UDOT for implementation in performing fully-coupled effective stress analyses; (2) develop laboratory testing program and procedures to obtain the required soil parameters; (3) develop in situ correlations with selected soil parameters to later obtain key model parameters; (4) validate the approach using existing field/project observations from the research sites and other embankments with high quality monitoring data; (5) develop methods/recommendations for safe rates of embankment placement; (6) recommend the type and amount of instrumentation that should be used to monitor future embankment construction and further validate coupled-effective stress evaluations.
状态：	Active
资金：	177902.00
资助组织：	Utah Department of Transportation
项目负责人：	Stevens, David
执行机构：	University of Utah, Salt Lake City
开始时间：	20081201
预计完成日期：	20160301
主题领域：	Bridges and other structures；Design；Geotechnology；Highways