2026-09-20T20:25:42Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/14646 2023-07-10 col_2142_14770 col_2142_5131 com_2142_3518 com_2142_234 com_2142_5130

Elnashai, Amr S. Elnashai, Amr S. Bennier, David J. 2010-01-06T16:20:24Z 2010-01-06T16:20:24Z 2010-01-06T16:20:24Z Fully-welded connections for earthquake resistance of steel frames are costly and their performance is adversely affected by weld defects and low-cycle fatigue. An alternative to welded connections is the bolted top and seat angle connection. The latter configuration can be designed to exhibit moment capacities that are lower than both the connected beams and columns. Such ‘partial strength connections’ provide attractive seismic design features by alleviating the overstrength requirements that codes impose on column design, to ensure a weak beam-strong-column performance. Towards this end, an experimental program was initiated at the University of Illinois, as described below. Full-scale hybrid simulation of a semi-rigid steel frame is conducted and its ductility and drift ratios are studied. The experimental component of the simulation comprises a beam-column subassembly with top and seat angle with double web angle connection and is instrumented to measure moment-rotation characteristics, as well as strains on the individual angle plates and slip of bolts. The simulation setup and software is described in detail. Simulation results are presented including story drift and base shear time histories. In addition, the moment-rotation diagrams from the hybrid simulation and cyclic testing are presented. Finally, a phenomenological model based on the Bouc-Wen formulation is fitted to the moment-rotation data. The model is suitable for extensive parametric studies on the type of connection tested, to guide future large scale testing and to derive design guidance. Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2009-12-02T20:22:23Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 2 Bennier_David.pdf: 8281802 bytes, checksum: d89a54b3e7728a27e3fc0cabb9b2fc5f (MD5) Bennier_David.docx: 4384971 bytes, checksum: b804938a000e57aa5a6ce529520a24f5 (MD5) Made available in DSpace on 2010-01-06T16:20:24Z (GMT). No. of bitstreams: 5 Bennier_David.pdf: 8322940 bytes, checksum: d24261e5714d473084a8cba88ccf834c (MD5) 1_Bennier_David.pdf: 8281802 bytes, checksum: d89a54b3e7728a27e3fc0cabb9b2fc5f (MD5) license.txt: 4063 bytes, checksum: 47673c5f21c5bfacbe8d836404187169 (MD5) Bennier_David.docx: 4384971 bytes, checksum: b804938a000e57aa5a6ce529520a24f5 (MD5) 2_Bennier_David.pdf: 8324022 bytes, checksum: 083d7f6166c3da8d8919909d8f9d9ccb (MD5) http://hdl.handle.net/2142/14646 en Copyright 2009 David J. Bennier Hybrid simulation Bouc-Wen Hybrid simulation of steel frames with semi-rigid connections 2009-12 Civil & Environmental Eng 1251 Civil Engineering 0106 University of Illinois at Urbana-Champaign Thesis M.S. MS:Civil Engineering -UIUC 10KS0106MS