LONG-SPAN BRIDGES UNDER DYNAMIC LOADS
The first part of this paper presents the results of measurements on three large suspension bridges, the Humber and two Bosporus bridges, comparing them with predictions made using both 2- and 3-dimensional finite element calculations of natural frequencies and modal shapes, the dynamic forces here being a combination of traffic and wind. In matters of analysis and computation, the paper deals with asynchronous input to bridges, that is, where the size of the structure allows a finite time to elapse between the ground input at different piers. In view of the non-deterministic nature of earthquake ground input, and the consequent need to use a statistical approach for assessing response, the stochastic method of analysis is explored, and finds that the very low natural frequency of long-span bridges makes the use of such methods problematic. For the covering abstract, see IRRD 892007.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/1874266336
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Corporate Authors:
SETO LTD
11 UPPER BELGRAVE STREET
LONDON, United Kingdom SW1X 4535 -
Authors:
- SEVERN, R T
- TAYLOR, C A
- Vann, A
- Publication Date: 1997
Language
- English
Media Info
- Features: References;
- Pagination: p. 9-15
- Serial:
Subject/Index Terms
- TRT Terms: Bridge decks; Bridge members; Bridges; Conferences; Damping (Physics); Dynamics; Frequency (Electromagnetism); Length; Seismicity; Stochastic processes; Vibration
- Uncontrolled Terms: Bridge spans
- ITRD Terms: 3455: Bridge; 3482: Bridge deck; 8525: Conference; 5559: Damping; 5473: Dynamics; 6997: Frequency; 5731: Seismic; 3452: Span; 6574: Stochastic process; 5558: Vibration
- Subject Areas: Bridges and other structures; Data and Information Technology;
Filing Info
- Accession Number: 00740966
- Record Type: Publication
- Source Agency: Transport Research Laboratory
- ISBN: 1-874266-33-6
- Files: ITRD
- Created Date: Oct 30 1997 12:00AM