scholarly journals Brief review of modern earthquake engineering

1971 ◽  
Vol 4 (3) ◽  
pp. 397-401
Author(s):  
J. Ferry Borges ◽  
J. Despeyroux ◽  
Y. Maeda ◽  
P. Mazilu ◽  
J. R. Robinson
Keyword(s):  
Earthquake Engineering ◽  
Working Group ◽  
Structural Engineering ◽  
International Association ◽  
European Convention ◽  
Earthquake Hazards ◽  
Engineering Research ◽  
Engineering Problems ◽  
Set Up ◽  
Research And Education

This review is a brief survey of the
 present status of Earthquake Engineering. It contains information on earthquake hazards, main Earthquake Engineering problems, safety of structures under the action of earthquakes, Earthquake Engineering research and education, and international collaboration. The review is prepared in accordance with
 a decision by the International Association for Bridge and Structural Engineering to set up a working group for dealing with “Information on Earthquake Engineering”. The decision to
 create this working group was supported by the "Comite de Liaison", which co-ordinates the activity of several international associations dealing with Structural Engineering, such as
 the International Association for Bridge and
 Structural Engineering, the European Committee for Concrete, the International Federation for Prestressing, the International Council for Building Research Studies and Documentation, the European Convention of the Associations for Steel Construction, and the International Association for Shell Structures.

scholarly journals World seismic safety initiative an IAEE undertaking

1993 ◽  
Vol 26 (4) ◽  
pp. 445-450 ◽  
Author(s):  
Haresh C. Shah ◽  
Tsuneo Katayama
Keyword(s):  
United Nations ◽  
Earthquake Engineering ◽  
Natural Hazard ◽  
International Association ◽  
Seismic Safety ◽  
Hazard Reduction ◽  
Set Up ◽  
Safety Initiative ◽  
International Decade ◽  
Future Plans

This article is based on a report from the International Association for Earthquake Engineering (IAEE) on the establishment of a World Seismic Safety Initiative as part of the International Decade for Natural Hazard Reduction set up by the United Nations. After describing the organisation of the WSSI, the report goes on to outline some of the projects currently under way and describes two in greater detail. These are the Workshops held earlier this year in Bangkok and Okinawa. Future plans are also outlined.

NGA-West2 Research Project

2014 ◽  
Vol 30 (3) ◽  
pp. 973-987 ◽  
Author(s):  
Yousef Bozorgnia ◽  
Norman A. Abrahamson ◽  
Linda Al Atik ◽  
Timothy D. Ancheta ◽  
Gail M. Atkinson ◽  
...  
Keyword(s):  
Ground Motion ◽  
Earthquake Engineering ◽  
Research Program ◽  
Epistemic Uncertainty ◽  
Response Spectra ◽  
Site Amplification ◽  
Earthquake Hazards ◽  
Research Project ◽  
Engineering Research ◽  
Crustal Earthquakes

The NGA-West2 project is a large multidisciplinary, multi-year research program on the Next Generation Attenuation (NGA) models for shallow crustal earthquakes in active tectonic regions. The research project has been coordinated by the Pacific Earthquake Engineering Research Center (PEER), with extensive technical interactions among many individuals and organizations. NGA-West2 addresses several key issues in ground-motion seismic hazard, including updating the NGA database for a magnitude range of 3.0–7.9; updating NGA ground-motion prediction equations (GMPEs) for the “average” horizontal component; scaling response spectra for damping values other than 5%; quantifying the effects of directivity and directionality for horizontal ground motion; resolving discrepancies between the NGA and the National Earthquake Hazards Reduction Program (NEHRP) site amplification factors; analysis of epistemic uncertainty for NGA GMPEs; and developing GMPEs for vertical ground motion. This paper presents an overview of the NGA-West2 research program and its subprojects.

Meeting the Challenges of Reducing Earthquake Losses: Engineering Accomplishments and Frontiers

1999 ◽  
Vol 15 (4) ◽  
pp. 813-823
Author(s):  
Daniel P. Abrams
Keyword(s):  
Earthquake Engineering ◽  
National Standards ◽  
Earthquake Hazards ◽  
Engineering Research ◽  
Earthquake Losses ◽  
Earthquake Resistant ◽  
Reduction Program ◽  
Earthquake Effects ◽  
National Networks ◽  
Work Done

Accomplishments in earthquake engineering under the National Earthquake Hazards Reduction Program (NEHRP) have been numerous since the inception of the federal program in 1977 and are noted herein with a series of examples of former and present work done by NSF, FEMA, NIST and their investigators. These examples illustrate the implementation of research and development towards reducing earthquake losses, and include projects done to (a) better understand response of constructed facilities to earthquakes, (b) develop improved national standards and practices for planning, design and construction of earthquake resistant facilities, (c) develop methods for assessment of vulnerability of existing facilities to earthquake effects, and (d) develop methods for strengthening or repair of vulnerable facilities. Future frontiers in earthquake engineering research are also discussed including cross-disciplinary approaches of newly established national earthquake engineering research centers that are directed at minimizing losses to communities and national networks.

scholarly journals Earthquake engineering research
 at The Papua and New Guinea
 Institute of Higher Technical Education

1969 ◽  
Vol 2 (4) ◽  
pp. 482
Author(s):  
W. H. Boyce
Keyword(s):  
New Zealand ◽  
Earthquake Engineering ◽  
Technical Education ◽  
New Guinea ◽  
Engineering Research ◽  
Engineering Problems

The Papua and New Guinea Institute of Higher Technical Education enrolled its first students in 1967 and moved to Lae at the beginning of 1968. An active building programme is underway. At the suggestion of Professor J.H. Lavery, University of Queensland, the first project undertaken by the writer on taking up his appointment in February 1968 was research on earthquake engineering problems. Two accelerographs were purchased from New Zealand and installed on the campus in November, 1968.

scholarly journals Frequency-Domain Assessment of Integration Schemes for Earthquake Engineering Problems

2015 ◽  
Vol 2015 ◽  
pp. 1-18
Author(s):  
Juana Arias-Trujillo ◽  
Rafael Blázquez ◽  
Susana López-Querol
Keyword(s):  
Numerical Integration ◽  
Earthquake Engineering ◽  
Structural Engineering ◽  
Transfer Functions ◽  
Time Integration ◽  
Digital Signal ◽  
Time Interval ◽  
Integration Schemes ◽  
Wide Range ◽  
Engineering Problems

Although numerical integration is a technique commonly employed in many time-dependent problems, usually its accuracy relied on a time interval small enough. However, taking into account that time integration formulae can be considered to be recursive digital filters, in this research a criterion based on transfer functions has been employed to characterize a wide range of integration algorithms from a frequency approach, both in amplitude and in phase. By adopting Nyquist’s criterion to avoid the aliasing phenomena, a total of seven integration schemes have been reviewed in terms of accuracy and distortion effects on the frequency content of the signal. Some of these schemes are very well-known polynomial approximations with different degrees of interpolation, but others have been especially defined for solving earthquake engineering problems or have been extracted from the digital signal processing methodology. Finally, five examples have been developed to validate this frequency approach and to investigate its influence on practical dynamic problems. This research, focused on earthquake and structural engineering, reveals that numerical integration formulae are clearly frequency-dependent, a conclusion that obviously has a relevant interest in all dynamic engineering problems, even when they are formulated and solved in the time-domain.

scholarly journals Development of Earthquake Energy Demand Spectra

2015 ◽  
Vol 31 (3) ◽  
pp. 1667-1689 ◽  
Author(s):  
Ahmet Anıl Dindar ◽  
Cem Yalçın ◽  
Ercan Yüksel ◽  
Hasan Özkaynak ◽  
Oral Büyüköztürk
Keyword(s):  
Earthquake Engineering ◽  
Energy Demand ◽  
Damping Ratio ◽  
Time History ◽  
Response Spectra ◽  
Seismic Demand ◽  
Current Response ◽  
Earthquake Hazards ◽  
Engineering Research ◽  
Plastic Energy

Current seismic codes are generally based on the use of response spectra in the computation of the seismic demand of structures. This study evaluates the use of energy concept in the determination of the seismic demand due to its potential to overcome the shortcomings found in the current response spectra–based methods. The emphasis of this study is placed on the computation of the input and plastic energy demand spectra directly derived from the energy-balance equation with respect to selected far-field ground motion obtained from Pacific Earthquake Engineering Research (PEER) database, soil classification according to National Earthquake Hazards Reduction Program (NEHRP) and characteristics of the structural behavior. The concept and methodology are described through extensive nonlinear time history analyses of single-degree-of-freedom (SDOF) systems. The proposed input and plastic energy demand spectra incorporate different soil types, elastic perfectly plastic constitutive model, 5% viscous damping ratio, different ductility levels, and varying seismic intensities.

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