Hollow Structural Sections Subjected to Inelastic Strain Reversals

Abstract

<p> A research project is presented to assess the capabilities of Square Hollow Structural Sections for seismic design. This assessment is based mainly on the energy dissipation and ductility measures. An attempt is made to establish a preliminary guideline of the maximum slenderness ratio that qualify the aforementioned sections for conservative seismic design. </p> <p> An experimental programme on seven different sections was performed to evaluate the loss in flexural capacity due to inelastic cyclic loads, and to construct the load-deflection and moment-curvature hysteresis loops. </p> <p> A comparison is made between the flange slenderness requirements of both HSS and wide flange rot led sections capable of resisting the same level of inelastic strain reversals for the same number of cycles. </p>