A rational method for development of limit state for liquefaction evaluation based on shear wave velocity measurements
✍ Scribed by Hsein Juang, C.; Chen, Caroline J.
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 206 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0363-9061
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✦ Synopsis
This papers presents a new approach for developing a limit state for liquefaction evaluation based on "eld performance data. As an example to illustrate the new approach, a database that consists of, among many other features, in situ shear wave velocity measurements and "eld observations of liquefaction/non-liquefaction in historic earthquakes is analysed. This database is "rst used to train a neural network to classify liquefaction/non-liquefaction based on soil resistance parameters and load parameters. The successfully trained and tested neural network is then used to establish a limit state, a multiple dimension boundary that separates &zone' of liquefaction from &zone' of non-liquefaction. The limit state yields cyclic resistance ratio for a given set of soil resistance parameters. Examination of all cases in the database show that the developed limit state has a high degree of accuracy in predicting the occurrence of liquefaction/non-liquefaction.
The developed neural network model can accurately predict the cyclic resistance ratio of soils.