TITLE:
Detection and Cause Analysis of the Deformation of the Purlin in a Certain Portal Frame Structure Factory Building
AUTHORS:
Mingnan Ji
KEYWORDS:
Purlin, Deflection Deformation, Inspection and Appraisal, Treatment Measures
JOURNAL NAME:
Open Journal of Applied Sciences,
Vol.14 No.11,
November
29,
2024
ABSTRACT: During the renovation process of a certain factory building, significant deflection deformation occurred in the purlins. To identify the reasons for the deformation of the purlins and eliminate potential safety hazards, a comprehensive structural inspection was carried out on this factory building, the inspection results indicate that the sectional dimension deviations of the measured steel components and the strength of the steel are in line with the design and code requirements. However, the mid-span deflections of some purlin components fail to meet the code requirements. The bearing capacity of the suspended loads under different working conditions was analyzed: Among the 9 hanging load working conditions of the purlins, the bearing capacity of the purlins in 4 working conditions did not meet the code requirements; among the 2 hanging load working conditions of the main frame, the bearing capacity of the frame beam components in 1 working condition did not meet the code requirements, and the deflections of the frame beams in both 2 working conditions did not meet the code requirements. In response to the above results, practical and feasible treatment suggestions were put forward.