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Resilience

Earthquake risk reduction

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Displaying 251 - 275 of 310

Nonlinear Dynamic Analysis of Structures Using Modal Superposition

April 13, 2011
Author(s)
Kevin K. Wong
A fast nonlinear dynamic analysis algorithm based on modal superposition of structural response incorporating both material and geometric nonlinearities is proposed. Because linear modal superposition has found great acceptances in performance-based

A Direct Analysis Method for Drift-Sensitive Steel Moment Frames

February 17, 2011
Author(s)
John L. Harris
Design interaction equations for steel members in a moment frame are formulated based on inelastic member capacities that account for geometric imperfections, residual stresses, second-order effects, and, in some cases, eccentric loading. The analytical

Annual Report of the National Earthquake Hazards Reduction Program for Fiscal Year 2009

October 1, 2010
Author(s)
John(Jack) R. Hayes Jr., Edward Laatsch, Joy Pauschke, David Applegate, John Filson
This report about the National Earthquake Hazards Reduction Program (NEHRP) during fiscal year 2009 is submitted to Congress by the Interagency Coordinating Committee (ICC) of NEHRP, as required by the Earthquake Hazards Reduction Program Reauthorization

Concrete Model Building Subtypes

September 30, 2010
Author(s)
William T. Holmes
This study was conducted by the National Institute of Building Sciences Building Seismic Safety Council (BSSC). The goal was to develop standardized categories for older concrete buildings that incorporate more detail than those included in the standard

Applicability of Nonlinear Multiple-Degree-of-Freedom Modeling for Design

September 15, 2010
Author(s)
Michael Valley, Mark Aschheim, Craig Comartin, William Holmes, Helmut Krawinkler, Mark Sinclair
In 2008, NIST initiated Task Order 68241 entitled "Improved Nonlinear Static Seismic Analysis Procedures – Multiple-Degree-of-Freedom Modeling." The purpose of this project was to conduct further studies on multiple-degree-of-freedom effects as outlined in