Results 251 to 260 of about 9,332 (282)

Modification of Ductility Reduction Factor for Vertically Irregular Structures Subjected to Pulse-Like Ground Motions

Advances in Structural Engineering, 2013
This paper reports on investigations into seismic ductility reduction factors for vertically irregular multi-degree-of-freedom (MDOF) systems subjected to pulse-like ground motions. Ductility reduction factors of irregular MDOF systems are obtained by modifying those of reference regular MDOF systems through a modification factor.
Guobin Bu
exaly   +2 more sources

Influence of High Mode Effects on Ductility Reduction Factors for MDOF Shear-Type Structures

Applied Mechanics and Materials, 2014
The influences of high mode effect on ductility reduction factors for multi-degree-of-freedom (MDOF) systems are studied by modifying ductility reduction factors for equivalent single-degree-of-freedom (SDOF) systems. Based on MDOF lumped-mass shear-type models, nonlinear dynamic time history analysis are performed to investigate the influence of ...
exaly   +2 more sources

Ductility reduction factor for zipper-braced frames

European Journal of Environmental and Civil Engineering, 2016
Current seismic provisions allow structures to experience inelastic deformation as a means of energy dissipation during severe earthquakes.
J. Vaseghi Amiri, M. Esmaeilnia Amiri, B. Ganjavi   +2 more
openaire   +1 more source

Evaluating the ductility reduction factors of SDOF self-centering earthquake-resisting structural systems

Bulletin of Earthquake Engineering, 2021
In the past two decades, considerable research works have been directed toward the development of self-centering (SC) earthquake resisting structural systems that are able to make structures usable and repairable after strong ground motions. The focus of these research works is on eliminating the residual deformations and on preventing the earthquake ...
Hamdy Abou-Elfath, Mostafa Ramadan, Emad Elhout   +2 more
openaire   +1 more source

Inelastic Displacement Amplification Factor for Ductile Structures with Constant Strength Reduction Factor

Advances in Structural Engineering, 2010
Based on elastic-plastic time-history earthquake analysis of the single degree of freedom (SDOF) system, the inelastic displacement amplification factor C d 2 of the elastic-perfectly plastic (EPP) model with the same yield strength reduction was investigated for different
Yongfeng Zhao, Genshu Tong
openaire   +1 more source

Ductility reduction factors for earthquake design

Engineering Structures, 1980
Abstract This paper shows how, given a fixed set of design limitations, proper use of ductility values for different classes of structures enables an economic design to be developed for earthquake loadings.
openaire   +1 more source

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
openaire   +2 more sources

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
openaire   +1 more source

Reduction of structural ductility factor due to variability of steel properties

Engineering Structures, 2000
Abstract The lower and upper bounds for the variability of the mechanical properties of two conventional steel grades (nominal yield stress F y =235 and 315 MPa) are determined from mill coupon test results. Reduction of the ductility factors due to the differences between the actual yield stress and the nominal design value for the compact plate ...
openaire   +1 more source

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
openaire   +1 more source