منابع مشابه
Reliability-based Design of Seismic Retrofit for Bridges
This research focused on developing reliability-based seismic retrofit assessment procedures for highway bridge columns. Fragility curves were developed to assess the relative performance of various retrofit methods considering several limit states. Analytical fragility curves are developed from scaled earthquake records and structural response models. A simplified, single-degree-of-freedom (SD...
متن کاملExternal seismic pre-isolation retrofit design
This technical note outlines the design of an external seismic pre-isolation system proposed for use in LIGO Livingston. The goal is to reduce the effects of the site’s excess ground noise in the 1 3 Hz frequency band, allowing detector noise performance equivalent to that of the 4 km LIGO Hanford detector. The center histogram in Figure 8 shows the most troubling aspect of the excess noise qui...
متن کاملPrototype Testing of a New Passive Energy Dissipation Device for Seismic Retrofit of Bridges
The increasingly demanding performance requirements trigger the development of new devices to eliminate the limitations concerning the post-earthquake performance of available seismic protection systems. The prerequisite for economical earthquakeresistant bridges is the structures’ capacity to absorb and dissipate a large amount of seismic energy. A widely considered strategy for enhancing this...
متن کاملSeismic Evaluation and Retrofit of Gas Stations: Case Study
Iran is a country with high seismicity while Tehran, the capital city is home to more than 10 million people which are located on the highest seismic zone of the country. There exist 153 gas stations throughout the metropolitan which are constructed to old building codes with little or no attention to the seismic considerations. In this study which was supported by the National Oil Company, fir...
متن کاملSeismic Retrofit for Electric Power Systems
This paper develops a two-stage stochastic program and solution procedure to optimize the selection of seismic retrofit strategies to increase the resilience of electric power systems to earthquake hazards. The model explicitly considers the range of earthquake events that are possible and, for each, an approximation to the distribution of damage that is experienced. This is important because e...
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ژورنال
عنوان ژورنال: Bulletin of the New Zealand Society for Earthquake Engineering
سال: 2000
ISSN: 2324-1543,1174-9857
DOI: 10.5459/bnzsee.33.3.265-285