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oai:www.ideals.illinois.edu:2142/83327 2023-07-11 col_2142_5131 col_2142_14770 com_2142_5130 com_2142_3518 com_2142_234

Elnashai, Amr S. Kwon, Oh-Sung 2015-09-25T21:04:18Z 2015-09-25T21:04:18Z 10000-01-01 2007 2007 Seismic vulnerability curves of a highway overcrossing bridge in the Central and Eastern United States (CEUS) are derived employing the aforementioned methods with and without soil-structure interaction. Four different approaches of Soil-Structure Interaction (SSI) are tried: (a) Abutments and foundations are assumed to be fixed, (b) Conventional lumped spring approaches are adopted to model abutments and foundations, (c) Lumped springs for abutments and foundations are estimated from Finite Element (FE) analysis of geotechnical system, and (d) Multiplatform simulation is conducted. All four of the methods shows that abutment bearings in transverse direction are most vulnerable components. Failure probability of the bridge system is highly dependent on the failure probability of abutment bearings. Among the four approaches, the fixed foundation approach underestimated the failure probability of all bridge components except abutment bearings in transverse direction. Considering that simplified methods for SSI analysis include larger assumptions than fully coupled methods and that the multiplatform simulation is verified with measured responses from instrumented bridge, the use of multiplatform simulation is suggested if computational power and resources for FE modeling are affordable. Made available in DSpace on 2015-09-25T21:04:18Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3269951.pdf: 7980142 bytes, checksum: 1d1509db45ddf56b1d9a150c86454732 (MD5) Previous issue date: 2007 Embargo set by: Seth Robbins for item 84608 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 254 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2007. http://hdl.handle.net/2142/83327 (MiAaPQ)AAI3269951 eng Engineering, Civil Probabilistic Seismic Assessment of Structure, Foundation, and Soil Interacting Systems text Civil Engineering Civil Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.