Results 31 to 40 of about 3,646,492 (243)

Reducing Seismic and Traffic Loads Using Seismic Isolating Systems

open access: yesTransportation Research Procedia, 2021
Abstract To reduce the effect of dynamic traffic and seismic loads, it is proposed to use a seismic insulating support, the contact surfaces of which are pasted over with a fluoroplastic film. The dry friction coefficient for a fluoroplastic pair is 0.03-0.05.
Vladimir Lapin   +3 more
openaire   +1 more source

Centrifuge modeling of rocking-isolated inelastic RC bridge piers [PDF]

open access: yes, 2014
Experimental proof is provided of an unconventional seismic design concept, which is based on deliberately underdesigning shallow foundations to promote intense rocking oscillations and thereby to dramatically improve the seismic resilience of structures.
Al‐Defae AH   +9 more
core   +3 more sources

CALCULATION OF SEISMICALLY LOADED EARTH RETAINING STRUCTURES

open access: yesActa Polytechnica CTU Proceedings, 2022
Eurocode 1998-5 for the design of earth retaining structures in seismic conditions describes calculations using the Mononobe-Okabe method. This simplified quasi-static procedure is to some extent very conservative. The article describes the limits of this method and brings out the comparison using theoretical numerical examples with other approaches ...
Jan Pruška, Veronika Pavelcová
openaire   +3 more sources

Seismic performance analysis of a wind turbine with a monopile foundation affected by sea ice based on a simple numerical method

open access: yesEngineering Applications of Computational Fluid Mechanics, 2021
To investigate the seismic performance of a wind turbine that is influenced by both the ice load and the seismic load, the research proposes a numerical approach for simulating the seismic behavior of a wind turbine on a monopile foundation.
Shuai Huang, Mingming Huang, Yuejun Lyu
doaj   +1 more source

Geotechnical design with apparent seismic safety factors well-bellow 1 [PDF]

open access: yes, 2014
The paper demonstrates that whereas often in seismic geotechnical design it is not realistically feasible to design with ample factor of safety against failure as is done in static design, an "engineering" apparent seismic factor of safety less than 1 ...
Anastasopoulos   +27 more
core   +3 more sources

Semi-active vibration control of structural systems with a neural network that trained preview optimal control for MLD model

open access: yesNihon Kikai Gakkai ronbunshu, 2021
We propose a new semi-active vibration control method of structural systems subject to seismic disturbances based on the optimal control for MLD models incorporating future seismic waveforms.
Kaoru SATO, Kazuhiko HIRAMOTO
doaj   +1 more source

Seismometer Detection of Dust Devil Vortices by Ground Tilt [PDF]

open access: yes, 2015
We report seismic signals on a desert playa caused by convective vortices and dust devils. The long-period (10-100s) signatures, with tilts of ~10$^{-7}$ radians, are correlated with the presence of vortices, detected with nearby sensors as sharp ...
Banerdt, W. Bruce   +6 more
core   +4 more sources

Dynamic Response Simulation of Lining Structure for Tunnel Portal Section under Seismic Load

open access: yes, 2018
Portal section is the weak link of seismic fortification for tunnel structure. Assuming that seismic wave is the vertical incident elastic plane wave, the plane wave input method for the portal section was discussed in this paper; that is, the wave input
Guoqing Liu   +3 more
semanticscholar   +1 more source

Comparison of wind turbine tower failure modes under seismic and wind loads [PDF]

open access: yes, 2019
This paper studies the structural responses and failure modes of a 1.5-MW horizontal-axis wind turbine under strong ground motions and wind loading. Ground motions were selected and scaled to match the two design response spectra given by the seismic ...
Bitsuamlak, G.   +4 more
core   +1 more source

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