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Statistical parameters for bridge structures

Statistical parameters for bridge structures

Statistical parameters for bridge structures

(OP)
Hi all,

which resources I can refer to for up to date statistical parameters (mean, COV,...) of bridge structures for various load (LL,DL) and resistances models (R) .
I need it for carrying out some reliability analysis.

Shoot for the Moon, even if U miss, U still land among Stars!

RE: Statistical parameters for bridge structures

Are you looking for measurements of actual live loads or live load testing of bridges? When AASHTO developed HL-93 they did actual measurements of trucks and through linear came up with the load. Some DOT's have done load testing of specific bridges; some of the tests were for validating distribution factors. You could read up on how AASHTO developed the LRFD code. The resistance and load factors are based on statistics.

RE: Statistical parameters for bridge structures

(OP)

Quote (bridgebuster)


I've seen many referred to the calibration of LRFD Bridge Design Code NCHRP by Nowak, this is really good reference. I need similar reference by with more updated statistical parameters. I've also looked up reliability books but all of them cited reports in 90's. There must be some new database developed from Weight-in-motion data/field testing in some states in which they used it for some Code calibration or proposed changes to existing code.

Shoot for the Moon, even if U miss, U still land among Stars!

RE: Statistical parameters for bridge structures

(OP)
At least does someone know any reference book/paper that could give me some clue?
I'm sure you know some people working on reliability analysis, specially engineers from US.

Cheers,

Shoot for the Moon, even if U miss, U still land among Stars!

RE: Statistical parameters for bridge structures

(OP)

Quote (IDS)


Thanks IDS, it is helpful.

Shoot for the Moon, even if U miss, U still land among Stars!

RE: Statistical parameters for bridge structures

(OP)
If someone has access to AASHTO LRFD-2012, can you please let me know what clauses state the statistical parameters for load effects as below:

Shoot for the Moon, even if U miss, U still land among Stars!

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