Moghaddam, H. and Hajirasouliha, I. (2006) Toward more rational criteria for determination of design earthquake forces. International Journal of Solids and Structures, 43 (9). 2631 - 2645. ISSN 0020-7683
Abstract
The preliminary design of most buildings is based on equivalent static forces specified by the governing building code. The height wise distribution of these static forces seems to be based implicitly on the elastic vibration modes. Therefore, the employment of such a load pattern in seismic design of normal structures does not guarantee the optimum use of materials. This paper presents a new method for optimization of dynamic response of structures subjected to seismic excitation. This method is based on the concept of uniform distribution of deformation. In order to obtain the optimum distribution of structural properties, an iterative optimization procedure has been adopted. In this approach, the structural properties are modified so that inefficient material is gradually shifted from strong to weak areas of a structure. This process is continued until a state of uniform deformation is achieved. It is shown that the seismic performance of such a structure is optimal, and behaves generally better than those designed by conventional methods. By conducting this algorithm on shear-building models with various dynamic characteristics subjected to 20 earthquake ground motions, more adequate load patterns are introduced with respect to the period of the structure and the target ductility demand. © 2005 Elsevier Ltd. All rights reserved.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2005 Elsevier Ltd. This is an author produced version of a paper subsequently published in International Journal of Solids and Structures. Uploaded in accordance with the publisher's self-archiving policy. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 27 May 2015 17:45 |
Last Modified: | 25 Mar 2018 18:56 |
Published Version: | https://dx.doi.org/10.1016/j.ijsolstr.2005.07.038 |
Status: | Published |
Publisher: | Elsevier |
Refereed: | Yes |
Identification Number: | 10.1016/j.ijsolstr.2005.07.038 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:86385 |