| Title: |
Experimental Investigation of the Rotational Behaviour of Apex Connections in Cold-Formed Steel Portal Frames |
| Authors: |
Desnerck, Pieter; Becque, Jurgen; Guo, Jia; Crawforth, Richard |
| Publisher Information: |
Department of Engineering; //www.ictws2023.org.au/proceedings/ |
| Publication Year: |
2024 |
| Collection: |
Apollo - University of Cambridge Repository |
| Description: |
An experimental campaign was set up to investigate the rotational stiffness and capacity of four different types of apex connections for use in cold-formed steel portal frames. Type A connections were constructed by bolting only the channel webs to a central bracket and provided a benchmark configuration. These connections were observed to fail by cross-sectional instability immediately adjacent to the first line of bolts. Type B connections featured additional bolts in the top flanges of the rafter channels. This configuration successfully moved the location of failure away from the connection and resulted in a modest increase in the rotational stiffness of 12%. Type C connections contained an additional haunch to accommodate bottom flange bolts. A more significant increase in rotational stiffness of 44% over the Type A connections was achieved. Type D connections also contained a bottom haunch and benefitted from a direct connection between bracket and channel top and bottom flanges. The rotational stiffness exceeded that of the Type A connections by 73%. However, the connection became prone to lateral-torsional buckling of the connection bracket. |
| Document Type: |
conference object |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
https://www.repository.cam.ac.uk/handle/1810/364994; https://doi.org/10.17863/CAM.106446 |
| DOI: |
10.17863/CAM.106446 |
| Availability: |
https://www.repository.cam.ac.uk/handle/1810/364994; https://doi.org/10.17863/CAM.106446 |
| Rights: |
Attribution 4.0 International ; https://creativecommons.org/licenses/by/4.0/ |
| Accession Number: |
edsbas.2659F41 |
| Database: |
BASE |