For performance-based design, nonlinear dynamic structural analysis using various types of input ground motions is required. Stochastic (simulated) ground motions are sometimes useful as input motions, because their properties can be varied systematically to study the impact of ground-motion properties on structural response, and producing large numbers of ground motions is simple. This paper d...

Among various indices of earthquake ground motions, the maximum amplitude value and frequency content have been regarded as the most important indices for earthquake engineering. These indices are strongly affected by local site conditions. Also the fact that the duration of earthquake ground motion differs from site to site even during the same earthquake has been noticed by many researchers. ...

NEES (the George E. Brown, Jr. Network for Earthquake Engineering Simulation) is a national, networked resource for next-generation experimental earthquake engineering research and education in the United States. The goal of NEES is to support open access to and use of NEES’s facilities and data by the earthquake engineering community. The system infrastructure to support the NEES activities is...

∗Graduate School Student, Earthquake Research Institute, University of Tokyo (1-1-1 Yayoi, Bunkyo, Tokyo, 113-0032 ∗∗Ph.D., Earthquake Research Institute, University of Tokyo (1-1-1 Yayoi, Bunkyo, Tokyo, 113-0032) ∗∗∗Ph.D., Earthquake Research Institute, University of Tokyo (1-1-1 Yayoi, Bunkyo, Tokyo, 113-0032) ∗∗∗∗Ph.D., Department of Civil Engineering, University of Tokyo (7-3-1 Hongo, Bunky...

The changing dynamics of coastal regions and climate pose severe challenges to communities around the world. Effective planning engineering projects resilience strategies in must not only address current conditions but also take into consideration expected changes exposure multi-hazard risk these areas. However, existing performance-based frameworks generally neglect time-varying factors miss o...

Earthquakes are one of the most unpredictable natural hazards but recently short-lead-time Earthquake Early Warning Systems (EEWS) have become practical with a system operating in Japan and another planned for operation in California in the next year or two. A few seconds to a minute or so of early warning is achievable. For example, if appropriate, an early warning can be broadcast to enhance ...

This report investigates the issue of selecting and scaling ground motions as input excitations for response history analyses of buildings in performance-based earthquake engineering. Many ground motion selection and modification (GMSM) procedures have been developed to select ground motions for a wide variety of objectives. This report focuses on the selection and scaling of single, horizontal...

This paper summarizes the initial developments of a research program that is underway to evaluate the efficacy of passive settings to seismically protect sets and pieces of equipment of essential facilities. Specifically, this paper presents case studies based on detailed numerical analysis using models that were validated with available experimental data. The case studies confirmed that: 1) am...

NEES (the George E. Brown, Jr. Network for Earthquake Engineering Simulation) is a national, networked resource for next-generation experimental earthquake engineering research and education in the United States. The goal of NEES is to support open access to and use of NEES’s facilities and data by the earthquake engineering community. The system infrastructure to support the NEES activities is...

Early and rigorous performance analysis of component-based systems is a crucial issue in software engineering to guarantee that the developed components and their assemblies will satisfy their quality requirements. We propose an original approach, called the CB-SPE, for component-based software performance engineering. CB-SPE relies on, and adapts to a CB framework, the concepts and steps of th...