000009376 001__ 9376
000009376 005__ 20141205150200.0
000009376 04107 $$aeng
000009376 046__ $$k2008-10-12
000009376 100__ $$aAlbanesi, Tommaso
000009376 24500 $$aDesign Procedure for Buckling Restrained Braces to Retrofit Existing R.C. Frames

000009376 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000009376 260__ $$b
000009376 506__ $$arestricted
000009376 520__ $$2eng$$aExisting reinforced concrete frame buildings with non-ductile detailing suffered severe damage and caused loss of life during earthquakes. Different rehabilitation systems have been developed to upgrade the seismic performance of this kind of structures before being subjected to an earthquake: in particular, buckling restrained steel braces (BRB) offer many advantages. BRB differs from a conventional brace in that it is capable of yielding both in tension and compression instead of buckling thus exhibiting very favorable energy-dissipating characteristics. The present paper deals with the seismic protection of reinforced concrete frames. In particular a displacement-based procedure to design dissipative BRB for the seismic protection of masonry-infilled frames is proposed. A two-fold performance objective is considered to protect the structure against the collapse (ULS) and the non-structural damage (DLS) by limiting global displacements and interstorey drifts so that structural and infill integrity is granted under a given seismic event. Positioning these devices in a structure to maximize their effectiveness at minimum cost is a very important issue which is considered too. As an example, an infilled-frame building, designed according to the non-seismic Italian Code and thus only for vertical loads, is analyzed. A numerical study to investigate its seismic behavior with and without BRB is carried out. Non linear static and dynamic time-history analyses to assess the effectiveness of the proposed rehabilitation design procedure are performed.

000009376 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009376 653__ $$astructural response, infilled r.c. frame, seismic protection.

000009376 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000009376 720__ $$aAlbanesi, Tommaso$$iBergami, Alessandro Vittorio$$iNuti, Camillo
000009376 8560_ $$ffischerc@itam.cas.cz
000009376 8564_ $$s376324$$uhttps://invenio.itam.cas.cz/record/9376/files/05-01-0307.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-01-0307.
000009376 962__ $$r9324
000009376 980__ $$aPAPER