Diagonal Beams Research Articles

Diagonal beam reinforcing for ductile frames

This paper describes a system of diagonal beam reinforcing for reinforced concrete ductile frame buildings in seismic areas. The development and application of the system is described with reference to the design of an 18 storey building. The proposed reinforcing system has a number of major structural advantages over conventional reinforcing. Moments and shears within the beam span can be resisted entirely by the main reinforcing. Plastic hinge lengths are substantially increased and the hinging is kept away from the column face allowing concrete strut action to be effective in resisting forces within the elastic beam column joint.

Plane-Framework Methods for Plates in Extension

Plane-framework procedures are presented for the analysis of plates in extension. Two different types of rectangular framework models are used to represent a rectangular element of uniform thickness in the plate. The cross-sectional properties of the beams in each model are derived by equating the deformations of the model to those of the plate element when both are subjected to identical loads. One model consists of side and diagonal beams and is directly applicable for any value of Poisson's ratio, while the other consists of orthogonally connected beams only and the effect of a non-zero value of Poisson's ratio is incorporated by successive approximations.

6)木造菱目床組(第1部)

6)木造菱目床組(第1部)