NEHRP Clearinghouse
- Title
- Optimum Design of Static, Earthquake, and Wind Steel Structures (ODSEWS-2D).
- File
- PB81232738.pdf
- Author(s)
- Cheng, F. Y.; ifuengfung, D.; Sheng, L. H.
- Source
- National Science Foundation, Washington, DC. Div. of Problem-Focused Research Applications., January 1981, 314 p.
- Identifying Number(s)
- CIVIL ENGINEERING STUDY-81-10
- Abstract
- An optimum design technique is presented for trusses and braced and unbraced frames with consideration of various constraints of stresses, displacements, natural frequencies, member sizes, and upper- and lower-bounds of member stiffnesses. A computer program ODSEWS (Optimum Design of Static, Earthquake, and Wind Structures) has been developed for which the dynamic input may be response spectra or code provisions. More than 80 cases were designed in which the frames were varied from one story to 30 stories for examining various response parameters. Among them the particular interests are in the effect of the interacting ground motions including P-Delta on the stiffness distribution at critical regions and at the entire system as well as in the assessment of structural systems and their serviceability. The method is considered to be superior to the conventional design technique because it can simultaneously provide the required stiffnesses and satisfy the given constraints which cannot be expected from the conventional design process.
- Keywords
- Seismic design; Dynamic loads; Static loads; Wind pressure; Steel structures; ODSEWS computer program; Buildings; Earthquake engineering; IBM 370/168 computers; Gust loads; Computer programs; Building codes; Earthquakes; Dynamic structural analysis