Huajing Guo, Baijian Wu, Zhaoxia Li*
Structural Durability & Health Monitoring, Vol.14, No.1, pp. 37-50, 2020, DOI:10.32604/sdhm.2020.08442
Abstract In order to resolve the safety problem of the existing crane runway girders (CRGs) with defects, the constraint-based R6 criterion is proposed to assess
their structural integrity. The existing steel CRGs with defects at the weld joint
between the upper flange and web plate, are characterized to three-dimensional
finite element models with a semi-ellipse surface crack. The R6 criterion has been
modified by considering the constraint effect which is represented by T-stress. The
analysis results illustrate that working condition of the cracked CRGs leads to
high constraint level along the crack front. The crack aspect ratio (a/c) and runway eccentricity… More >
Login
Register
