Abstract：
A 10-year old grid structure needs to go through safety assessment, including specification examination and statistics of grid column, drawing of plan and elevation, random examination of dimension and thickness of three pieces of grid column, drilling of steel scrap for chemical analysis, inspection of node connection, base connection, member deformation, coating and leakage defect, etc. SAP2000 finite element software was used to establish a model to verify the results. It was shown that the status quo of the grid structure is safe, providing references for inspection and assessment of grid structure safety.
