Seismic isolation bearings
Seismic isolation bearings
(OP)
The conventional practice is to use only one type of bearings on a bridge. Is there any refeence to this "rule"?
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Seismic isolation bearings
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RE: Seismic isolation bearings
RE: Seismic isolation bearings
I have worked (not designed) on a number of bridges, most of which had several types of bearings. In fact to have fixed bearings on one pier or abutment and sliding bearings on the rest seems to me a reasonable arrangement.
In the project I am currently working on I have pot fixed, pot sliding, elastomeric, knuckle bearing, a strange mechanical german bearing... Mind you, it is quite a complex bridge.
I have not heard about the rule you mention, unless you are talking about the bearings on the same pier or support, which would make sense to me to keep the same.
All the same, Graybeach is correct, whatever bearing arrangement is chosen, I assume that it has to be reviewed and analyzed to ensure it is working as a system.
RE: Seismic isolation bearings