Results 21 to 30 of about 21,729 (297)

Hilbert–Huang-Transform-Based Seismic Intensity Measures for Rocking Response Assessment

open access: yesApplied Sciences, 2023
Structures that can uplift and rock under severe seismic excitations present remarkable stability without exhibiting damage. As such, rocking-response-based structural systems constitute a promising design practice.
Kosmas E. Bantilas   +3 more
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 ...
Gazetas, George   +2 more
core   +1 more source

Seismic performance of damaged frame retrofitted with self-centering and energy-dissipating rocking wall

open access: yesResilient Cities and Structures, 2023
This paper proposes the novel concept of retrofitting damaged reinforced concrete frame with self-centering and energy-dissipating rocking wall. Parametric studies were carried out base on pushover and time-history analysis.
Genqi Xiao, Haishen Wang, Peng Pan
doaj   +1 more source

Shaking table tests on seismic response of rocking frame structure considering foundation uplift

open access: yesYantu gongcheng xuebao, 2021
The separation of structural foundation and foundation soil, namely the foundation uplift, is inevitable in strong earthquakes, so the concept of rocking isolation is gradually proposed.
WANG Guo-bo 1, WANG Yao 1, YU Hai-tao 2, ZHENG Nian-wen 3, SUN Fu-xue 1
doaj   +1 more source

Optimized design of bi-rocking steel braced frames via changing the second rocking joint location [PDF]

open access: yesمهندسی عمران شریف, 2023
After an earthquake, plastic deformation of structural elements can render repairing uneconomical, thus necessitating the adoption of low-damage systems that mitigate the residual drift of structures. Among these, self-centering rocking-core systems have
M.T. Rafiei Mohammadi   +2 more
doaj   +1 more source

Effect of Interaction and Rocking Motion on The Earthquake Response of Buildings [PDF]

open access: yesJournal of Structural and Construction Engineering, 2015
Usually structures are designed under codes based on the assumption that the soil stiffness is infinite, so the foundation rests firmly on the soil. In many cases, the overturning moment due to the lateral forces may exceed the resisting moment due to ...
Gholamreza Havaei, Ehsan Mobedi
doaj   +1 more source

Seismic protection of rocking structures with inerters [PDF]

open access: yes, 2018
The seismic behaviour of a wide variety of structures can be characterized by the rocking response of rigid blocks. Nevertheless, suitable seismic control strategies are presently limited and consist mostly on preventing rocking motion all together ...
Christian Málaga‐Chuquitaype   +3 more
core   +1 more source

Seismic control of flexible rocking structures using inerters [PDF]

open access: yes, 2020
Allowing flexible structures to uplift and rock during earthquakes can significantly reduce the force demands and residual displacements. However, such structures are still susceptible to large deformations and accelerations that can compromise their ...
Christian Málaga‐Chuquitaype   +3 more
core   +1 more source

Emergence of three-dimensional quasi-passive dynamic walking by excitation of lateral rocking (Influence of rocking motion and physical characteristics on gait transition)

open access: yesNihon Kikai Gakkai ronbunshu, 2015
This paper tries to clarify how rocking motion and body structure effect on the emergence of walking and the changes of the gait such as walking speed and the length of stride.
Daisuke NAKANISHI   +4 more
doaj   +1 more source

The structures of noncrystalline rocks

open access: yesChinese Science Bulletin, 2000
The structural studies of noncrystalline rocks by total radial distribution function (RDF) which was derived from the wide angular X-ray scattering (WAXS) have been reported. In order to make a further study of the structural features shown by RDF, the unsymmetric peaks in total RDF were separated into the approximately symmetric peaks by the multi ...
Jizhou Chen   +3 more
openaire   +1 more source

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