Results 261 to 270 of about 50,824 (306)

Scaling of ductility and damage-based strength reduction factors for horizontal motions

Earthquake Engineering & Structural Dynamics, 2000
The conventional approach of obtaining the inelastic response spectra for the aseismic design of structures involves the reduction of elastic spectra via response modification factors. A response modification factor is usually taken as a product of (i) strength factor, RS, (ii) ductility factor, Rμ, and (iii) redundancy factor, RR.
Arun K. Tiwari, Vinay K. Gupta
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STRENGTH REDUCTION FACTORS FOR DUCTILE STRUCTURES WITH PASSIVE ENERGY DISSIPATING DEVICES

Journal of Earthquake Engineering, 2003
In recent years, current seismic codes started contemplating the design of structures with passive energy dissipating devices. One important issue for the rational seismic design of these devices and the structure that contains them is the formulation of numerical methods to estimate their design seismic forces.
DANNY ARROYO-ESPINOZA, AMADOR TERAN-GILMORE   +1 more
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Ductility Reduction Factors for Steel Buildings Modeled as 2D and 3D Structures

Applied Mechanics and Materials, 2014
The global ductility parameter (μG), commonly used to represent the capacity of a structure to dissipate energy, and the associated ductility reduction factor (Rμ), are estimated for steel buildings with perimeter moment resisting frames (PMRF), which are modeled as 2D and 3D complex MDOF systems.
Alfredo Reyes-Salazar, Eden Bojorquez, Achintya Haldar, Arturo Lopez-Barraza, J. Luz Rivera-Salas   +4 more
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Performance-based evaluation of the response reduction factor for ductile RC frames

Engineering Structures, 2013
Abstract Most seismic design codes today include the nonlinear response of a structure implicitly through a ‘response reduction/modification factor’ ( R ). This factor allows a designer to use a linear elastic force-based design while accounting for nonlinear behaviour and deformation limits.
MONDAL, A, GHOSH, S, REDDY, GR
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Ductility reduction factor formulations for seismic design of RC wall and frame structures

Engineering Structures, 2019
Abstract Seismic design of standard structures is typically founded on a force-based design approach. Over the years this approach has proven robust and easily applicable by design engineers and – in combination with capacity design principles – it provides a good protection against premature structural failures.
Zerbin, Matteo, Aprile, Alessandra, Beyer, Katrin, Spacone, Enrico   +3 more
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Relationship of strength reduction factor and maximum ductility factor for seismic design of one-storey industrial steel frames

Asian Journal of Civil Engineering, 2020
In the earthquake-resistant design, it requires a check of the adequacy of the maximum inelastic deformation of structural members designed corresponding to the value of strength reduction factor, R, used for determining the design base shear and consequently equivalent static seismic forces applied on the structure. This paper presents evaluation of a
Dinh Van Thuat, Ho Viet Chuong, Bach Duong   +2 more
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Examination of Ductility and Seismic Diaphragm Design Force-Reduction Factors for Steel Deck and Composite Diaphragms

Journal of Structural Engineering, 2020
AbstractThis paper analyzes the ductility and overstrength of steel deck diaphragms and composite concrete on steel deck diaphragms and computes associated diaphragm design force-reduction factors,...
Matthew R. Eatherton, Patrick E. O’Brien, W. Samuel Easterling   +2 more
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DUCTILITY DEMANDS CONTROL UNDER REPEATED EARTHQUAKES USING APPROPRIATE FORCE REDUCTION FACTORS

Journal of Earthquake and Tsunami, 2010
This paper develops a new procedure for the ductility demands control of single-degree-of freedom (SDOF) systems under multiple earthquakes. According to the proposed method, this objective can be achieved using appropriate force reduction (R) factors. In this way, the total ductility demands, and therefore the cumulative damage levels, are absolutely
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The ductility-based strength reduction factor for the mainshock–aftershock sequence-type ground motions

Bulletin of Earthquake Engineering, 2015
This manuscript investigates the strength reduction factor of single degree of freedom system with constant ductility performance subjected to the mainshock–aftershock sequence-type ground motions. The recorded and artificial sequence-type ground motions are used. The aftershock ground motions in sequence are scaled to have different relative intensity
Chang-Hai Zhai, Wei-Ping Wen, Shuang Li, Li-Li Xie   +3 more
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New formulation of ductility reduction factor of RC frame-wall dual systems for design under earthquake loadings

Soil Dynamics and Earthquake Engineering, 2020
Abstract Any design of standard structures in keeping with seismic safety norms is usually founded on an approach characterised by force-based design. Research has proven, over the course of several decades, that such an approach has a solid basis and can easily be applied by the engineers in charge of the design project.
Zerbin M., Aprile A., Spacone E.
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