详情

Monitoring of Lateral Earth Pressure and Movements of Cut Retaining Walls

项目名称：	Monitoring of Lateral Earth Pressure and Movements of Cut Retaining Walls
摘要：	Retaining walls constructed from top-down (�cut� walls) are utilized on numerous transportation projects. Design of these walls involves estimation of lateral earth pressure distribution to evaluate safety against soil failure at the strength limit state, as well as movement and stability at the service limit state. Various methods are currently used to predict the loads acting on the wall elements as well as to estimate wall movement. These methods can produce varied results. The over prediction of lateral earth pressure and wall movement results in conservative design which may correlate to unnecessarily high retaining wall cost. On the contrary, underestimation of lateral earth pressure and wall movement may result in wall failure or excessive wall deflection and/or settlement behind the wall. Furthermore, there is little documentation regarding actual versus predicted lateral earth pressures or wall movements for cut walls, particularly for those built in Wisconsin. Better estimation of earth pressures will provide calibration of commonly used design procedures and a reduction in retaining wall cost and improvement in performance. This study will meet the following objectives: (1) Investigate the short-term and long-term performance of cut retaining walls, namely soldier pile and lagging walls since they are most commonly built by Wisconsin Department of Transportation (WisDOT). (2) Measure the top-of-wall lateral deflection of cut retaining walls. (3) Measure the magnitude and distribution of lateral earth pressure along the height of the wall. (4) Measure vertical ground settlement at various points behind the wall. (5) Compare measured lateral earth pressure and retaining wall movement versus estimated wall movements generated from commonly used methods and computer programs. (6) Determine if modifications to existing design methodologies can be made based on findings of research.
状态：	Active
资金：	150000
资助组织：	Wisconsin Department of Transportation
项目负责人：	Zimmer, Andrew
执行机构：	Geocomp Corporation
主要研究人员：	Marr, Allen
开始时间：	20170627
预计完成日期：	20191227
实际结束时间：	0