000010729 001__ 10729
000010729 005__ 20141205155757.0
000010729 04107 $$aeng
000010729 046__ $$k2008-10-12
000010729 100__ $$aLin, K.C.
000010729 24500 $$aFailure Modes and Flexural Ductility of Steel Moment Connections

000010729 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010729 260__ $$b
000010729 506__ $$arestricted
000010729 520__ $$2eng$$aDuctility is the main attribute of steel moment connections and the failure modes control it. This study reanalyzes the results of 66 past experiments in Taiwan, comparing connection ductility across failure modes. In reference to FEMA 1995, the failure mode and root cause identification was firstly made for each specimen. 56 of the specimens were found to fail for the main three modes. In details, 43% of the connections failed for flange-HAZ (Heat Affected Zone) fracture, 27% failed for flange-weld fracture, and 16% failed for flange buckling. Following that, the connection ductility of the 56 specimens was reanalyzed and compared in detail. The plastic rotation, at which a connection reaches its maximum moment strength, was used as the main measure of connection ductility. Flange-HAZ fracture gave an average of 1.98%, and flange-weld fracture and flange buckling changed it to 2.47% and 2.95%, respectively. Furthermore, equivalent monotonic ductility was used as another measure, assessing the connection ductility without the effect of loading history. Flange-HAZ fracture gave an average of 11.32, and flange-weld fracture and flange buckling changed it to 11.56 and 11.81, respectively. Finally, a numerical example was given to illustrate that the obtained results have important implications for making a strategy for the performance assessment and earthquake retrofitting of steel moment frames.

000010729 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010729 653__ $$asteel moment frames, connection ductility, failure modes, performance assessment, earthquake retrofitting

000010729 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010729 720__ $$aLin, K.C.$$iTsai, K.C.$$iChang, H.Y.
000010729 8560_ $$ffischerc@itam.cas.cz
000010729 8564_ $$s352828$$uhttps://invenio.itam.cas.cz/record/10729/files/05-05-0145.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-05-0145.
000010729 962__ $$r9324
000010729 980__ $$aPAPER