Efficient semi-analytical generator of initial stiffness designs for steel frames under seismic loading. Part 2: Slender frame

✍ Scribed by Takewaki, Izuru

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 110 KB
• Volume: 6
• Category: Article
• ISSN: 1062-8002
• DOI: 10.1002/(sici)1099-1794(199706)6:2<163::aid-tal91>3.0.co;2-e

✦ Synopsis

A simple stiffness design formula including the effects of column elongation is derived for a slender steel building frame. The steel frame has prescribed column cross-sections obtained in the companion paper (Part 1) and the angles of nodal rotation at the beam ends related to the net deformation of the beams under horizontal design loads are specified. This problem is a hybrid inverse problem with a subassemblage of members of prescribed stiffnesses and a subassemblage of members of stiffnesses to be determined. It is shown that a set of beam bending stiffnesses and the remaining frame deformation can be obtained through a set of simultaneous linear equations. The final design is then found for the design story shear force evaluated recursively.