www.sefindia.org

STRUCTURAL ENGINEERING FORUM OF INDIA [SEFI]

 Forum SubscriptionsSubscriptions DigestDigest Preferences   FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups  RegisterRegister FAQSecurity Tips FAQDonate
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log in to websiteLog in to websiteLog in to websiteLog in to forum 
Warning: Make sure you scan the downloaded attachment with updated antivirus tools  before opening them. They may contain viruses.
Use online scanners
here and here to upload downloaded attachment to check for safety.

Displacement-Based Seismic Design of Structures

 
This forum is locked: you cannot post, reply to, or edit topics.This topic is locked: you cannot edit posts or make replies. Thank Post    www.sefindia.org Forum Index -> E-Conference on Tall Buildings
View previous topic :: View next topic  
Author Message
nrk
SEFI Member
SEFI Member


Joined: 20 Apr 2008
Posts: 19

PostPosted: Mon Nov 26, 2012 12:15 pm    Post subject: Displacement-Based Seismic Design of Structures Reply with quote

The limitations of the force-based design are discussed thoroughly in the book 'Displacement-Based Seismic Design of Structures', authored by Priestley, Calvi and Kowalsky. Force-based design produces unsafe designs, particularly in the case of shearwall buildings having shearwalls with widely varying slenderness. The ductility capacity of a slender shearwall will be different from the ductility capacity of a wide shearwall. This difference cannot be accounted for in force-based design, as we use a single 'R' factor for the design of the building, although the ductility capacity of various lateral load resisting elements (shearwalls, in this case) is not the same.

I invite the opinions of everyone, particularly the moderators and the resource persons on this issue.

_________________
Regards,
Ravi.
Back to top
View user's profile Send private message
Manoharbs_eq
General Sponsor
General Sponsor


Joined: 17 Jul 2012
Posts: 423

PostPosted: Wed Nov 28, 2012 4:23 am    Post subject: Reply with quote

Dear Ravi,

I too agree with the statement, R value provided 3,4,5 is for regular structures, but we now have composite systems with shear walls and columns and core walls where individual response is not linear with the whole structure. eg. a mivan building has varied stiffness for each storey and a different stiffness at core area. these are not linear equations.


hence we have to make changes in our analysis by adopting displacement based analysis rather than force based.

Rgds
Manohar
Back to top
View user's profile Send private message
Display posts from previous:   
This forum is locked: you cannot post, reply to, or edit topics.This topic is locked: you cannot edit posts or make replies. Thank Post    www.sefindia.org Forum Index -> E-Conference on Tall Buildings All times are GMT
Page 1 of 1

 

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


© 2003, 2008 SEFINDIA, Indian Domain Registration
Publishing or acceptance of an advertisement is neither a guarantee nor endorsement of the advertiser's product or service. advertisement policy