Equivalent linear response spectrum methodology for the seismic response of a simple structural system with a uni-directional support (tension only or compression only)
- Framatome Technologies, Lynchburg, VA (United States)
Typically, structures with significant non-linear supports are analyzed using either time-history algorithms or response spectrum enveloping techniques, with multiple stiffness values to represent the non-linear supports. However, there are problems associated with these methods: (1) time-history analyses require considerable computer time, and, more importantly, the generated response files can become too large; (2) linear response spectrum analyses, when used to envelop the non-linear solution, are excessively conservative. This paper presents an equivalent linear response spectrum methodology to analyze structural systems with a uni-directional support. The structure is free to move in one direction, and restricted with a support stiffness in the diametrically opposed direction. The mathematical formulas for this application are developed and presented. The results using this methodology are compared with actual results from corresponding time-history non-linear structural analyses. These comparisons, performed for the one-mass structural system, show that the equivalent linear response spectrum method closely approximates the time-history results.
- OSTI ID:
- 404332
- Report Number(s):
- CONF-960706-; ISBN 0-7918-1787-3; TRN: IM9652%%192
- Resource Relation:
- Conference: American Society of Mechanical Engineers (ASME) pressure vessels and piping conference, Montreal (Canada), 21-26 Jul 1996; Other Information: PBD: 1996; Related Information: Is Part Of Seismic engineering -- 1996. PVP-volume 340; Saleem, M.A. [ed.] [AECL, Mississauga, Ontario (Canada)]; Aggarwal, M.C. [ed.]; PB: 372 p.
- Country of Publication:
- United States
- Language:
- English
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