TITLE:
Linear Design Technology of a Subgrade Prefabricated Interlocking Structure
AUTHORS:
Yu Sun, Linyi Pan, Luo Ji, Yue Yuan, Guomin Deng
KEYWORDS:
Road Engineering, Interlocking Structure, Alignment Design, Prefabricated Assembly
JOURNAL NAME:
Open Journal of Civil Engineering,
Vol.16 No.1,
February
26,
2026
ABSTRACT: There is little research on prefabricated subgrade in the field of road engineering. A significant aspect within this domain is the design of road alignments. Considering these factors, this paper specifically addresses the study of design methods for prefabricated interlocking subgrade structures. After analyzing the disadvantages of traditional rectangular prefabricated blocks, inspired by the concept of the short shield method, the paper proposes to adjust the shape of prefabricated blocks to trapezoid. By utilizing AutoCAD, this study simulates the placement of prefabricated blocks under different road alignments and arrangement modes. The corresponding number of prefabricated blocks and pavement layout is calculated based on the linear elements and design principles of various planes and longitudinal sections. The technology for designing prefabricated interlocking subgrade structures presented in this paper can provide valuable insights for the construction of prefabricated subgrades, with potential for wide-ranging application and promotion.