DESIGN TOOL FOR STRUCTURAL CONCRETE D-REGIONS

摘要

An interactive design tool for shear-walls and D-regions in beams of structural concrete is described. The PC-oriented program is based on just two elements: a stringer (straight bar) and a panel (rectangular or quadrilateral). The design is done in three distinct steps: The first one is full linear-elastic, the second non-linear step accounts for cracking of concrete and yielding of panel reinforcement while the stringer reinforcement is still kept elastic and the final third step is a full non-linear simulation of the structural behaviour. Thus, the interactive procedure accounts for redistribution of stresses. The result is a final scheme of reinforcement and information on deformations and crack-widths in the serviceability state. A design example is included.