Boundary condition effect on response modification factor of X-braced steel frames
Joint Authors
Atiyyah, Walid A.
Irhim, Masud M. M.
Source
Housing and Building National Research Center Journal
Issue
Vol. 14, Issue 1 (30 Apr. 2018), pp.104-121, 18 p.
Publisher
Housing and Building National Research Center
Publication Date
2018-04-30
Country of Publication
Egypt
No. of Pages
18
Main Subjects
Abstract EN
Design of the structures to resist seismic force depends on the theory of dissipation in elastic energy that already exists in response modification factor ‘‘R-factor”.
The main problem in codes gives a constant value for R-factor, since change in boundary conditions of building change in behavior of braced steel frame structures and that effects on R-factor.
This study is an attempt to assess overstrength, ductility and response modification factor of X-braced steel frame under change in boundary conditions, as change in the direction of strong axis of column and connection support type of column besides variation in storey and bays numbers to be 21 frames and each frame has 8 different boundary conditions as sum of 168 cases for analysis.
These frames were analyzed by using nonlinear static ‘‘pushover” analysis.
As results of this study change in support type and direction of strong axis of column give large change in value of R-factor; the minimum value was 4.37 and maximum value 10.97.
Minimum value is close to code value that’s mean the code is more conservative in suggesting of R-factor and gives a large factor of safety.
Change in the location of bracing gives change in value of R-factor for all boundary conditions.
Change in direction of strong axis of columns and support type didn’t give change in value of fundamental period, all boundary conditions
American Psychological Association (APA)
Atiyyah, Walid A.& Irhim, Masud M. M.. 2018. Boundary condition effect on response modification factor of X-braced steel frames. Housing and Building National Research Center Journal،Vol. 14, no. 1, pp.104-121.
https://search.emarefa.net/detail/BIM-836024
Modern Language Association (MLA)
Atiyyah, Walid A.& Irhim, Masud M. M.. Boundary condition effect on response modification factor of X-braced steel frames. Housing and Building National Research Center Journal Vol. 14, no. 1 (Apr. 2018), pp.104-121.
https://search.emarefa.net/detail/BIM-836024
American Medical Association (AMA)
Atiyyah, Walid A.& Irhim, Masud M. M.. Boundary condition effect on response modification factor of X-braced steel frames. Housing and Building National Research Center Journal. 2018. Vol. 14, no. 1, pp.104-121.
https://search.emarefa.net/detail/BIM-836024
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 120-121
Record ID
BIM-836024