000019478 001__ 19478
000019478 005__ 20170118182320.0
000019478 04107 $$aeng
000019478 046__ $$k2017-01-09
000019478 100__ $$aGhodsi, Tony
000019478 24500 $$aThe 2015 Los Angeles Alternative Procedure for Seismic Analysis and  Design of Tall Buildings

000019478 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019478 260__ $$b
000019478 506__ $$arestricted
000019478 520__ $$2eng$$aBuilding codes intend to provide for safe buildings by prescribing provisions that generally address all building and construction types. Tall buildings are a special class of structures that may need to be designed with a different approach to meet their specific safety and performance requirements, especially in regions of high seismicity. To meet this need, the Los Angeles Tall Buildings Structural Design Council (LATBSDC) has recently updated its alternative procedure for seismic analysis and design of tall buildings. LATBSDC has been developing the alternative design procedure over 12 years and has recently published the 2015 edition of this procedure. Application of this performance-based alternative procedure requires an in-depth understanding of ground shaking hazards, structural materials behavior, and nonlinear dynamic structural response. The aims of the procedure are to provide: a more reliable seismic performance; reduced construction cost; relief from prescriptive design requirements that do not need to apply; accommodation of demanding architectural features; and use of innovative structural systems and materials not currently allowed by the building codes. LATBSDC has also recently published guidelines on the proper use of dual systems for tall buildings. The following major updates have been implemented in the 2015 edition which is actively being used for design of tall buildings all over the west coast of the United States: • Updated modeling requirements and acceptability criteria for reinforced concrete walls and coupling beams. • Incorporation of sensitivity analysis requirements to bound the possible ramifications of the backstay effect. • Incorporation of adjusted acceptability criteria for buildings in various seismic risk categories. • Revised design ground motion criteria which permits the use of conditional spectra. This paper describes the provisions of the 2015 edition and highlights the significance of the performance improvements that can be achieved using these new provisions for design of tall building structures.

000019478 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019478 653__ $$aTall buildings, performance-based engineering, seismic design, building codes, alternative procedure

000019478 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019478 720__ $$aGhodsi, Tony$$iHart, Gary$$iLew, Marshall$$iMehrain, Michael$$iSabol, Thomas$$iWallace, John$$iCarpenter, Lauren$$iNaeim, Farzad
000019478 8560_ $$ffischerc@itam.cas.cz
000019478 8564_ $$s252282$$uhttps://invenio.itam.cas.cz/record/19478/files/3722.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3722.
000019478 962__ $$r16048
000019478 980__ $$aPAPER