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The ECOLEADER-JRC Project "Cyclic and PsD Testing of a 3D Steel-Concrete Composite Frame" -ECSC Project 7210-PR-250 "Applicability of composite structures to sway frames" includes a full-scale seismic test program on a two-storey, two-bay steel- concrete composite frame with semi-rigid connections. A description of the test structure is first presented, together with the design assumptions considered for the reference prototype structure. The report then describes a series of preliminary analyses performed using modelling assumptions made prior to the test program. Static pushover analyses were first carried out to evaluate the structural over strength of the test frame, considering both the nominal and actual material properties. Time history seismic analyses were then performed to determine the type and amplitude of ground motions that should be considered for the pseudo-dynamic tests. The structure was found to possess lateral over strength of 9.0 compared to the seismic design force level, which significantly exceeds the dependable value of 1.5, which is expected in similar constructions. It was also recommended that Eurocode 8 Type 1 spectrum compatible ground motions, scaled to peak accelerations between 0.8 g and 1.2 g, be used for the seismic tests representing ultimate limit states. However, stronger ground shaking can be applied in subsequent tests if the structure was found to perform satisfactorily under the proposed ground motion level.

Additional information

Authors: TREMBLAY R, École Polytechnique of Montreal (CA) and European Commission, Joint Research Centre, Institute for the Protection and the Security of the Citizen, European Laboratory for Structural Assessment (ELSA), Ispra (IT)
Bibliographic Reference: EUR 20753 EN (2003), 55pp. Free of charge
Availability: Available from European Commission, JRC Information & Public Relations Unit, Ispra (IT) Fax: +39 033278 5409 or Fax: +32 2 2996322 E-mail:
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