Motion control of long span horizontal structures

Traditional approaches to structural design presuppose strength to be the dominant design requirement. But following new technologies and design methods, this assumption that strength requirements dominate is being challenged. In the design of horizontal structures, such as floor systems and pedestrian bridges, increasing lengths of column-free span and demands for material efficiency have led to an overall reduction in the structural properties of mass, stiffness and damping. These three properties traditionally controlled motion-related serviceability issues, but this is no longer the case. Engineers are increasingly reporting vibration problems in horizontal structures. Hence, the dominant design criterion has shifted from a basis of strength to one of motion. This thesis attempts to investigate the code requirements and state of the art analysis techniques involved in the vibration control of horizontal structures. Design techniques involving passive control, active control and some alternative control methods are discussed and evaluated, both qualitatively and quantitatively, through a series of example problems.

Department dc:contributor.department

Massachusetts Institute of Technology. Dept. of Civil and Environmental Engineering.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2006

Author dc:creator

• Shultz, Nicholas A. (Nicholas Andrew)

Advisor dc:contributor.advisor

• Jerome J. Connor.

• Civil and Environmental Engineering.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/34586

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/34586