详情

Improved Concrete Crossties Design: Quantifying Cyclic Loading Failure Criteria

项目名称：	Improved Concrete Crossties Design: Quantifying Cyclic Loading Failure Criteria
摘要：	As the use of concrete crossties increases, the need to understand their performance and failure mechanisms becomes more critical. In particular, there is a need to quantify criteria for failure modes that cause crossties to be removed from service before the end of their useful life (minor cracking, etc.). The primary objective of this research project is to subject crossties to demanding loading conditions, representative of revenue service conditions, in the laboratory to determine the stress state of concrete crossties under cyclic loading. These stress states can be compared with the material properties and overall geometry requirements to determine their impact on the health of the track structure. The outcome of this work is the development of a framework for providing the rail industry quantitative metrics for classifying a tie as failed compared to the qualitative methods currently employed.
状态：	Active
资助组织：	Office of the Assistant Secretary for Research and Technology
项目负责人：	Edwards, Riley
主要研究人员：	Dersch, Marcus S
开始时间：	20180801
预计完成日期：	20200915
实际结束时间：	0