Lattice distance-based grey relational comprehensive evaluation on safety for fastener-style tubular steel formwork-support - II New evaluation method and its application

A assessment framework for fastener-style tubular steel formwork-support (FTSF) is established in part one of this paper. By combining the grey relational analysis with the fuzzy sets theory, a new multi-level and multi-attribute grey relational comprehensive evaluation method based on lattice distance between fuzzy numbers is proposed. Utilizing the new method, a standard of construction safety appraisal for FTSF was presented. Finally an application shows the correctness and effectiveness of the proposed method and the assessment system for FTSF.