Graduate Thesis Or Dissertation

 

Dynamic response of steel structures with semirigid connections Public Deposited

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/kh04dt120

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  • The nonlinear response of a ten-story steel structure with semirigid girder connections is studied under conditions of dynamic loading. The dynamic loading used in this study is the North-South component of the May 18, 1940 El Centro, California earthquake. To deal with the complexity of the problem the structure is idealized by a series of equivalent masses, lumped at the floor levels and restrained by weightless members. The physical model used to represent individual members consists of a flexible central beam with springs attached at both ends. All connections have the capability of exhibiting bilinear hysteresis curves. A numerical procedure is used to integrate the governing differential equations. The analysis is accomplished by a step-by-step procedure in which the structure is assumed to respond linearly during each time increment. However, the member properties may be changed from one interval to the next. Thus the nonlinear response is obtained as a sequence of linear responses of successively differing systems. Semirigid girder connections affect the properties of a structure in three ways: (a) by altering the relative girder to column stiffness (b) by changing the strength or yield deformation characteristics, and (c) by decreasing the stiffness of the structure. The effects that these variables have on structural response are determined. The ground motion characteristics, intensity and duration, are also investigated.
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  • description.provenance : Submitted by Kevin Martin (martikev@onid.orst.edu) on 2014-04-04T15:00:21Z No. of bitstreams: 1 GrantJosephE1968_Redacted.pdf: 724561 bytes, checksum: 922759ea420f6565bc82d44d2cdbc159 (MD5)
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