000013537 001__ 13537
000013537 005__ 20161114165845.0
000013537 04107 $$aeng
000013537 046__ $$k2011-05-25
000013537 100__ $$aDegee, H.
000013537 24500 $$aNon Linear Analysis of Steel Storage Racks Submitted to Earthquake Loading - Assessment of the Interstorey Drift Sensitivity Coefficient and of Its Use in Simplified Analyses

000013537 24630 $$n3.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013537 260__ $$bNational Technical University of Athens, 2011
000013537 506__ $$arestricted
000013537 520__ $$2eng$$aStatic steel pallet racks are used for the storage of various types of goods in areas of retail warehouse stores and other facilities, possibly accessible to the public. Storage racks are composed of specifically designed cold-formed steel elements permitting an easy installation and later reconfiguration, consistent with the merchandising needs of a warehouse retail store. Static steel pallet racks can be considered as part of the most flexible structures constructed nowadays, in particular for what concerns the so-called down-aisle (i.e. longitudinal) behaviour. Since rack structures are highly flexible, ULS requirements (stability and resistance) can be fulfilled even if sway displacements are significant. However, this requires of course that the second order geometrical effects be duly taken into account in the global structural analysis. In Europe, the main reference document is the FEM 10.2.08 "Recommendations for the design of static steel pallet racks under seismic conditions" issued by the European Racking Federation. The recommendations of this document are mainly based upon the philosophy of EN 1998-1 (Eurocode 8) although the peculiar dynamic behaviour of racking structures and of their stored unit loads is taken into consideration. Given that the design rules take root in the Eurocode 8, the management of the PDelta effects is based on the so-called θ-parameter or interstorey drift sensitivity coefficient. The paper deals specifically with down-aisle frames of rack structures and follows three definite objectives: (i) Evaluate the sensitivity parameter θ for rack structures such as designed in practice. To this purpose, a database of 18 more or less flexible real structures is developed; (ii) Evaluate the actual impact of the second order effects in seismic context for such flexible structures. This assessment is done through static and dynamic non linear analyses of the 18 structures; (iii) Compare different methods of global analysis and, in particular, assess the accuracy of the simplified approach proposed by FEM 10.2.08 for intermediate values of θ.

000013537 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013537 653__ $$a

000013537 7112_ $$aCOMPDYN 2011 - 3rd International Thematic Conference$$cIsland of Corfu (GR)$$d2011-05-25 / 2011-05-28$$gCOMPDYN2011
000013537 720__ $$aDegee, H.$$iRossi, B.
000013537 8560_ $$ffischerc@itam.cas.cz
000013537 8564_ $$s14331$$uhttp://invenio.itam.cas.cz/record/13537/files/253.pdf$$yOriginal version of the author's contribution as presented on CD, section: MS 27 Steel Structures Under Dynamic and Seismic Loading.
000013537 962__ $$r13401
000013537 980__ $$aPAPER