Stability of non-prismatic frames with flexible connections and elastic supports

• Published in: KSCE journal of civil engineering Vol. 20; no. 2; pp. 832 - 846
• Main Authors: Rezaiee-Pajand, M., Shahabian, F., Bambaeechee, M.
• Format: Journal Article
• Language: English
• Published: Seoul Korean Society of Civil Engineers 01.03.2016; Springer Nature B.V; 대한토목학회
• Subjects: Civil Engineering; Columns (structural); Differential equations; Elastic supports; Engineering; Equations; Equivalence; Exact solutions; Flexible connections; Formulations; Frames; Geotechnical Engineering & Applied Earth Sciences; Industrial Pollution Prevention; Joints; Shape factor; Stability; Structural Engineering; 토목공학; tapered columns; flexible connections; critical buckling load; non-prismatic frames; taper ratio; effective length factor; elastic supports
• ISSN: 1226-7988; 1976-3808
• DOI: 10.1007/s12205-015-0765-6

An accurate formulation is obtained to determine critical load, and corresponding equivalent effective length factor of a simple frame. The presented methodology is based on the exact solutions of the governing differential equations for buckling of a frame with tapered and/or prismatic columns. Accordingly, the influences of taper ratio, shape factor, flexibility of connections, and elastic supports on the critical load, and corresponding equivalent efficient length factor of the frame will be investigated. The authors' findings can be easily applied to the stability design of general non-prismatic frames. Moreover, comparing the results with the accessible outcomes demonstrate the accuracy, efficiency and capabilities of the proposed formulation.