Bridge Evaluation by Load Resistance Factor Rating (LRFR). Application to TxDOT Prestressed Concrete I-beams

Front Cover
ProQuest, 2008 - 186 pages
1 Review
Currently there are three methods available to evaluate the capacity of existing bridges: Allowable Stress Rating (ASR), Load Factor Rating (LFR) and Load and Resistance Factor Rating (LRFR). The most commonly used method in the past three decades has been the LFR. However, in 2001 AASHTO introduced LRFR, based on the reliability theory and actually used by most bridge evaluators. Using this new method the performance of a given bridge or its component can be estimated based on its reliability index. By taking into account the variability in load and resistance of the component, this reliability index increases public safety.
 

What people are saying - Write a review

We haven't found any reviews in the usual places.

Contents

1 Gusset plates of the I35W Bridge after collapse
2
4 LRFD Design Live Load HL93
8
Bridge Evaluation Procedures
12
1 AASHTO legal loads which control weight limits
18
5 Probability density function of load and resistance
25
7 LRFR Flow Chart
35
Evaluation Examples
40
3 Type A B C IV Beams HS20
41
Summary Of Results and Conclusion
152
Copyright

Common terms and phrases

Bibliographic information