Results 11 to 20 of about 50,824 (306)

Selection procedure of seismic-load reduction factor K1 at a given level of ductility factor [PDF]

open access: yesИнженерно-строительный журнал, 2012
At the present time for providing earthquake resistance of buildings and structures, the multilevel design approach is applied. According to this approach seismic loads corresponding to the level of the maximum design earthquake must be perceived by ...
E. Simbort
doaj   +2 more sources

Reliability-based ductility reduction factors surfaces using the generalized bojorquez ground motion intensity measure IBg

open access: yesResults in Engineering
In this work, reliability-based ductility reduction factors surfaces are obtained through uniform annual failure rate (UAFR) spectra. For this aim, several nonlinear single degree of freedom (SDOF) systems that include various hysteretic behavior models,
Edén Bojórquez   +3 more
doaj   +2 more sources

Energy Dissipation and Local, Story, and Global Ductility Reduction Factors in Steel Frames under Vibrations Produced by Earthquakes [PDF]

open access: yesShock and Vibration, 2018
Ductility plays a central role in seismic analysis and design of steel buildings. A numerical investigation regarding the evaluation of energy dissipation, ductility, and ductility reduction factors for local, story, and global structural levels is ...
Alfredo Reyes-Salazar   +4 more
doaj   +2 more sources

Ductility and Strength Reduction Factors for Degrading Structures Considering Cumulative Damage [PDF]

open access: yesThe Scientific World Journal, 2014
The effect of cumulative damage on the strength requirements of degrading structures is assessed through the evaluation of the target ductility and corresponding strength reduction factors of simple degrading structures. While the reduction on ductility is established through the use of Park and Ang index, the suggestions given by Bojórquez and Rivera ...
Edén Bojórquez   +3 more
openaire   +3 more sources

Displacement ductility demand and strength reduction factors for rocking structures [PDF]

open access: yesWIT Transactions on The Built Environment, Vol 93, 2007
This paper reports the main results of an extensive parametric study using numerical simulations and computing displacement ductility demand of nonlinear single-degree of freedom (SDOF) systems and multi-degree of freedom (MDOF) systems for a set of 164 registered ground motions.
M. Trueb, Y. Belmouden, P. Lestuzzi
openaire   +1 more source

Ductility reduction factor analysis of RC frames considering influences of infilled walls

open access: yesIOP Conference Series: Earth and Environmental Science, 2021
Abstract The value of ductility reduction factor is directly related to seismic design force. And then it has a vital impact on the safety and economy of structures. Influences of infilled walls as nonstructural members on ductility reduction factor is usual neglected in current codes.
LI Yanjun, LU Dagang, WANG Zhenyu
openaire   +1 more source

Advances on creep–fatigue damage assessment in notched components [PDF]

open access: yes, 2017
In this paper, the extended Direct Steady Cyclic Analysis method (eDSCA) within the Linear Matching Method Framework (LMMF) is combined with the Stress Modified Ductility Exhaustion method and the modified Cavity Growth Factor (CGF) for the first time ...
Barbera, D., Chen, H., Liu, Y.
core   +2 more sources

Evaluation of seismic performance of X bracing systems equipped with flexural yielding dampers [PDF]

open access: yesJournal of Structural and Construction Engineering, 2017
The X-bracing system is one of the lateral loads bearing system. In X-bracing system’s elements, axial plastic hinges (compressive or tensile) will be formed instead of flexural hinges which are not capable to absorb high energy.
Mussa Mahmoudi Sahebi, Farshid Khanjani
doaj   +1 more source

Optimization of Fiber-Reinforced Polymer Bars for Reinforced Concrete Column Using Nonlinear Finite Element Algorithms

open access: yesAlgorithms, 2021
The ductility and strength of reinforced concrete (RC) columns could be noticeably improved by replacing steel bars with polymeric bars. Despite the previous research on RC columns, most of those studies focused only on the lateral load capacity of this ...
Sajjad Sayyar Roudsari   +4 more
doaj   +1 more source

Behaviour Factor of Ductile Code-Designed Reinforced Concrete Frames

open access: yesAdvances in Civil Engineering, 2021
The current generation of seismic design codes is based on a linear elastic force-based approach that includes the nonlinear response of the structure implicitly through a response modification factor (named reduction factor R in American codes or ...
Massimiliano Ferraioli
doaj   +1 more source

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