Application of the stress wave method to automatic signal matching and to statnamic predictions
conference paper
The Statnamic method is an increasingly popular technique to carry out loading tests on cast in-situ piles. The method bas proved to be a cost-effective alternative to a static loading test. As-sociated to Unloading Point Method (UPM) and to automatie signal matching, the Statnamic testing technique provides an estimation of the static load-settlement curve of foundation piles. For long piles with wave numbers (Nw) less than 12, however, the method becomes less accu-rate because of stress wave phenomena (concrete piles longer than 35 m or steel piles longer than 40 m). In these cases, the signal matching stress wave method can be used to estimate the static load-settlement curve. The TNO Stress-Wave method is a convenient way to carry out automatic matching on Statnamic signals. The use of TNO Stress-Wave method and of auto-matic signal matching for a Statnamic prediction is investigated in this paper. A case study is introduced and the results of a signal matching are presented. Further, the case study is mod-elled in TNO Stress-Wave and the results of the model are compared to the results of the field Statnamic test.
TNO Identifier
329566
ISBN
90-5809-150-3
Publisher
A.A. Balkema
Source title
Application of Stress-Wave Theory to Piles: Quality Assurance on Land and Offshore Piling. Proceedings of the 6th International Conference on the Application of Stress--Wave Theory to Piles, Sao Paulo, Brasil, 11-13 September
Editor(s)
Niyama, S.
Beim, J.
Beim, J.
Place of publication
Rotterdam
Pages
575-581
Files
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