SEISMIC ISOLATION RETROFIT AT MID-STORY AND BASE : Structural design
نویسندگان
چکیده
منابع مشابه
External 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...
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Seismic design relies on inelastic deformations through hysteretic behavior. However, this translates into damage on structural elements, permanent system deformations following an earthquake, and possibly high cost for repairs. An alternative design approach is to concentrate damage on disposable and easy to repair structural elements (i.e., “structural fuses”), while the main structure is des...
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In this paper a new isolating system is introduced for short to mid-rise buildings. In comparison to conventional systems such as LRB and HRB, the proposed system has the advantage of no need to cutting edge technology and has low manufacturing cost. This system is made up of two orthogonal pairs of pillow-shaped rollers that are located between flat bed and plates. By using this system in two ...
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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...
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Earthquakes are one of the natural hazards that occur due to sudden violent movement of earth’s surface which releases energy and has destructive power in many parts of the world. The development of recent technologies for the control of seismic hazards catches the attention of structural engineers to make the structures seismically resistant. The seismic base isolation technique is a passive p...
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ژورنال
عنوان ژورنال: AIJ Journal of Technology and Design
سال: 1997
ISSN: 1341-9463,1881-8188
DOI: 10.3130/aijt.3.37_3