Seismic Performance of WUF-W Moment Connections According to Access Hole Geometries
- Authors
- Han, Sang Whan; Jung, Jin; Ha, Sung Jin
- Issue Date
- May-2016
- Publisher
- SAGE PUBLICATIONS INC
- Citation
- EARTHQUAKE SPECTRA, v.32, no.2, pp.909 - 926
- Indexed
- SCIE
SCOPUS
- Journal Title
- EARTHQUAKE SPECTRA
- Volume
- 32
- Number
- 2
- Start Page
- 909
- End Page
- 926
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/154692
- DOI
- 10.1193/060614EQS082M
- ISSN
- 8755-2930
- Abstract
- The welded unreinforced flange-welded web (WUF-W) moment connection is an all-welded moment connection, which is one of the prequalified connections for the special moment frame (SMF) specified in AISC 358-10. However, previous experimental studies reported that WUF-W connections with a beam depth of 890 mm failed as a result of brittle beam flange fracture and did not satisfy the requirement for the SMF connection specified in AISC 341-10. In this study, a finite element analysis (FEA) was conducted to investigate the cause of the brittle failure in the WUF-W connection. This study observed that the brittle failure occurred in WUF-W connections was mainly attributed to the access hole geometry. This study proposed the improved access hole geometry to prevent brittle failure from WUF-W connections. To verify the analysis results, this study conducted an experimental test using one WUF-W connection specimen with an improved access hole geometry.
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