Shear Behavior Analysis of Cold-formed Thin-walled Steel C-shape Beam(PDF)
《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]
- Issue:
- 2018年05期
- Page:
- 152-159
- Research Field:
- Publishing date:
Info
- Title:
- Shear Behavior Analysis of Cold-formed Thin-walled Steel C-shape Beam
- Author(s):
- YAO Xin-mei; ZHOU Xu-hong; ZHANG Hui; SHI Yu; GUAN Yu
- School of Civil Engineering, Chang’an University
- Keywords:
- cold-formed thin-walled steel; C-shape beam; shear bearing capacity; finite element analysis; section property
- PACS:
- -
- DOI:
- -
- Abstract:
- In order to investigate the shear behavior of cold-formed thin-walled steel C-shape beam, a nonlinear numerical model was built up through the finite element analysis software ABAQUS based on previous experimental study. The correctness of the modeling method was verified by comparing the results of finite element model and that of experiment. The compared results included the shear bearing capacity, specimen failure characteristics and load-mid span deflection curves. Then the effects of shear span ratio, web height to depth ratio, web depth and steel strength on the shear behavior of cold-formed thin-walled steel C-shape beam were investigated. The results show that shear span ratio is the main factor determining the failure characteristics of cold-formed thin-walled steel C-shape beam; when the shear span ratio is at 0.5-1.1, the C-shape beam is in pure shear and the corresponding failure mode is yield stress; when the shear span ratio is at 1.1-2, the C-shape beam is subjected to combined action of bending-shear and the corresponding failure mode is bending-shear failure; the shear bearing capacity and the stiffness of C-shape beam decrease with the increase of shear span ratio; when the web height to thickness ratio is at 50-150, the shear bearing capacity and stiffness of the C-shape beam raise with the increase of web height to thickness ratio, and the mid-span deflection decreases; with the increase of web thickness, the shear bearing capacity and stiffness are obviously improved; the steel strength has significant influence on the shear bearing capacity of the beam, but has little effect on the stiffness of it.
Last Update: 2018-09-03