000018267 001__ 18267
000018267 005__ 20170118182215.0
000018267 04107 $$aeng
000018267 046__ $$k2017-01-09
000018267 100__ $$aKoliou, Maria
000018267 24500 $$aRoof Diaphragm Distributed Yielding Concept for Improved Seismic Collapse Performance of Buildings With Rigid Walls and Flexible Roof Diaphragms

000018267 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018267 260__ $$b
000018267 506__ $$arestricted
000018267 520__ $$2eng$$aBuildings with rigid walls and flexible roof diaphragms (RWFD) are a common type of single-story construction in North America, Europe and New Zealand that incorporate rigid in-plane concrete or masonry walls and flexible in-plane wood or steel roof diaphragms. RWFD buildings have shown poor seismic performance during past earthquake events. In particular, it has been observed that the global seismic response is dominated by the response of the roof diaphragm, which is mainly attributed to large in-plane roof displacements that significantly exceed the displacements of in-plane walls. The present study explores the concept of distributed yielding in the flexible roof diaphragm by weakening certain intermediate diaphragm zones as a cost effective means to improve the seismic collapse capacity of RWFD buildings and mitigate their seismic vulnerability. A numerical framework was developed specifically for analyzing RWFD buildings and was used to evaluate the proposed concept. Results of nonlinear dynamic time-history response analyses conducted on a typical RWFD building incorporating a wood roof diaphragm show that distributing the inelastic response of the flexible diaphragm along its span is beneficial to the seismic collapse capacity of RWFD buildings. A seismic design approach based on this concept is also formulated and proposed for implementation into the U.S. building codes as an alternative seismic design approach for this type of structure.

000018267 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018267 653__ $$aSeismic design; Collapse performance; Flexible roof diaphragms

000018267 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018267 720__ $$aKoliou, Maria$$iKelly, Dominic J.$$iFiliatrault, André$$iLawson, John
000018267 8560_ $$ffischerc@itam.cas.cz
000018267 8564_ $$s558187$$uhttps://invenio.itam.cas.cz/record/18267/files/113.pdf$$yOriginal version of the author's contribution as presented on USB, paper 113.
000018267 962__ $$r16048
000018267 980__ $$aPAPER