Developing Technical Standards for Renovating Urban Rail Transit Lines in China
Renovating existing lines is a key long-term task for achieving high-quality and sustainable development of urban rail transit in China.Technical standards are essential for initiating,designing,and implementing renovation projects.This paper reviews the current technical standard system for urban rail transit and examines the suitability of existing standards for each stage of the renovation process.To address the issues of incomplete coverage,low applicability,and poor relevance of existing standards,we propose two approaches and schemes for developing a new technical standard system for renovating urban rail transit lines,along with the principles for constructing and formulating the standards.We focus on the technical standards for renovation,including the requirements for renovation determination,design,construction,acceptance,safety assessment,and post-evaluation.
urban rail transitrenovation of linestechnical standardssystem framework