Results 41 to 50 of about 52,412 (170)

Shaking Table Tests of Curved Bridge considering Bearing Friction Sliding Isolation

open access: yesShock and Vibration, 2016
Specific to severe damage to curved bridges in earthquakes caused by the excessive force of the fixed bearings and piers, a new seismic design method on curved bridges considering bearing friction sliding isolation is proposed in this paper.
Lei Yan   +3 more
doaj   +1 more source

Ground-based gravitational-wave detection: now and future [PDF]

open access: yes, 2008
In the past three years, the first generation of large gravitational-wave interferometers has begun operation near their design sensitivities, taking up the mantle from the bar detectors that pioneered the search for the first direct detection of ...
Whitcomb, Stanley E.
core   +1 more source

Enhanced Seismic Protection System for an Emergency Diesel Generator Unit

open access: yesEnergies, 2022
Nuclear power plants are required to maintain operation after an earthquake, leading to a safe shutdown if necessary. In the case of a loss of offsite power, the onsite emergency diesel generator is critical to ensure procedural operations of the nuclear
Ricardo Bustamante   +2 more
doaj   +1 more source

Subtraction of Newtonian Noise Using Optimized Sensor Arrays [PDF]

open access: yes, 2012
Fluctuations in the local Newtonian gravitational field present a limit to high precision measurements, including searches for gravitational waves using laser interferometers.
Adhikari, Rana X.   +2 more
core   +2 more sources

Study on Sensitivity of Uncertainty Factors in Seismic Demand Analysis of Continuous Girder Bridges with Seismic Isolation Design

open access: yesApplied Sciences
In order to clarify the influence of the uncertain parameters of a bridge numerical model for seismic isolation design on the calculation results of structural seismic demand and to improve the accuracy of bridge seismic isolation design, a refined ...
Ruotong Wang, Meng Liu, Junjie Wang
doaj   +1 more source

Analysis of Seismic Isolation Performance of X-Shaped Rubber Bearings (XRBs)

open access: yesBuildings, 2022
A detailed analysis of the seismic safety performance of building structures using X-shaped rubber bearings (XRBs) under seismic action at different seismic levels of intensity were carried out in this study.
Di Wu, Jingtian Lin, Yan Xiong
doaj   +1 more source

Proof-of-principle demonstration of vertical gravity gradient measurement using a single proof mass double-loop atom interferometer [PDF]

open access: yes, 2018
We demonstrate a proof-of-principle of direct Earth gravity gradient measurement with an atom interferometer-based gravity gradiomter using a single proof mass of cold 87 rubidium atoms.
Bidel, Yannick   +5 more
core   +2 more sources

Performance Evaluation of Seismic Isolation System by Installation Location in Lighthouse Structures

open access: yesShock and Vibration, 2018
The purpose of this study is to evaluate the applicability of seismic isolation devices for marine accidents under seismic loads. The lighthouse structure is a very important facility when the ship approaches the port.
Moo-Won Hur, Tae-Won Park
doaj   +1 more source

Base Isolation Systems – A State of the Art Review According to Their Mechanism [PDF]

open access: yesJournal of Rehabilitation in Civil Engineering, 2020
Seismic isolation is a method to reduce the destructive effects of earthquakes on a structure in which the structure is separated from its foundation by devices called seismic isolators. As a result, the horizontal movements of the earthquake transmitted
Ali Beirami Shahabi   +2 more
doaj   +1 more source

Three dimensional nonlinear dynamic modeling of a vertically isolated ancient statue displayed in a base isolated museum building [PDF]

open access: yes, 2011
This research concerns with the question of how the seismic isolation methods can be applied efficiently to protect the ancient statues under both horizontal and vertical strong earthquake excitations.
Castiglioni, CARLO ANDREA   +1 more
core  

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