Parametric modeling for detailed typesetting and deviation correction in shield tunneling construction

Abstract

Segment typesetting is an important procedure in shield tunneling construction, but its current practices have been viewed as being low-efficiency and are considered to be less helpful in automatic typesetting for deviation correction. This study develops a novel parametric shield tunnel modeling method (PSTMM) that provides functions of shield segment modeling, typesetting, and deviation correction. The PSTMM first develops individual segmental rings by parametric modeling and then outputs the optimal segment typesetting by referencing both the distance between the designed tunnel axis (DTA) and the end of the center axis and the cosine similarity between the DTA direction and center axis direction. The PSTMM was evaluated in real-life tunneling construction projects. The results showed that the PSTMM can quickly develop the tunnel model and efficiently simulate segment typesetting when serious deviations occur; both of these features can be extremely helpful for guiding sequential assembly work.