Research on intelligent construction quality evaluation of CRTS Ⅲ slab ballastless track

GAO Liang; JIANG Jinfeng; XU Lingyan; XIE Qinghe; ZHANG Kai

doi:10.11860/j.issn.1673-0291.20240115

Abstract：Most existing quality evaluation methods for high-speed railway ballastless track construc-tion are established based on traditional construction processes.As ballastless track construction pro-gressively shifts towards intelligent construction,the existing evaluation methods can no longer adequately meet the requirements for quality evaluation of intelligent ballastless track construction.Taking the construction of the CRTS Ⅲ slab ballastless track as an example,this paper analyzes the key quality factors of intelligent construction processes,constructs an evaluation index system,and es-tablishes a comprehensive quality evaluation model for intelligent ballastless track construction based on the Analytic Hierarchy Process(AHP)and the matter-element extension evaluation theory.Field tests are carried out on an intelligent construction test section of a high-speed railway for verification.The results show that the model established in this paper can objectively evaluate the quality of intelli-gent ballastless track construction.Compared with the traditional process,the guided intelligent con-struction process achieves a 32%improvement in the excellent rate.For the intelligent construction of the CRTS Ⅲ slab ballastless track,the construction quality of the track slab is the most important,fol-lowed by the quality of the self-compacting concrete construction,while the construction quality of the base slab has the least impact.The research results can provide a basis for evaluating the quality of in-telligent construction of CRTS Ⅲ slab ballastless tracks for high-speed railways and offer a reference for the quality management of ballastless track construction in China's high-speed railways.