Feasibility Studies on Adaptive Interface for Square Infilled Frame

Abstract

Listen

Translate article

Abstract High rise buildings are becoming more common nowadays to face the increasing demand on the land area for industrial and agricultural needs apart from urbanisation. Such buildings require special systems to carry lateral loads resulting from wind, earthquake etc. One of the more common lateral load resisting system is an infilled frame. Infilled frame is a structural system developed through the composite action between the bounding frame and the infilling wall under in plane lateral loads. Such an interaction has proved beyond doubt that an increase in the lateral stiffness of the bare frame. However there are certain limitations reported in the literature due to the composite action like increased base shear, short column effect, vertical stiffness irregularity, reduced ductility etc.It is worth considering development of a provision to make the frame to behave as an infilled frame during working load levels and converting its behaviour similar to that of ductile bare frame towards its failure stages. The main objective of the present investigations is to seek the evolution of feasibility of an infilled frame system whose stiffness can be altered during its service without altering physically any of the component materials. This is sought to be achieved in the present investigation by providing an air medium (pneumatic medium) at interface and altering the air pressure as required. Under main conclusions include the possible to alter lateral stiffness and cracking and failure load levels of infilled frame through use of pneumatic medium interface.