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This paper describes how a computer programme has been constructed to analyse by a displacement method the elastic-plastic behaviour of plane frames as load is increased proportionally, the main object being to determine the elastic-plastic collapse load.
A. Jennings and K. Majid
The present design procedures for reinforced and prestressed concrete are reviewed briefly. This forms the background for a discussion of the purpose of design and the phenomena meriting consideration in the design process; this discussion encompasses
the developments that have been taking place in our understanding of structural behaviour and in the concepts of structural safety. The shortcomings of the present design procedures are then considered and a new philosophy of design, based upon the work of the European Committee for Concrete, is outlined.
R.E. Rowe, W.B. Cranston and B.C. Best
The paper deals with the calculation of plastic collapse loads for circular-arc beams built-in at their ends, subtending any angle up to 360° and loaded perpendicular to their planes.