Dynamic load testing: Difference between revisions

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{{Short description|Method to assess a pile's bearing capacity}}

{{about|a geotechnical pile testing method|software engineering dynamic testing|Dynamic testing}}

'''Dynamic load testing''' (or '''dynamic loading''') of [[Deep_foundation|piles]] is a fastmethod andto effectiveassess methoda of assessing[[Deep foundation|pile]]'s [[bearing capacity]] thatby requiresapplying instrumentinga dynamic load to the pile head (a [[deepfalling foundation]]mass) withwhile recording acceleration and strain on the pile head. Dynamic load testing is a ''[[accelerometerhigh strain dynamic testing|high strain dynamic test]]s'' andwhich straincan transducersbe andapplied analyzing''after data''pile collectedinstallation byfor concrete piles. For steel or timber piles, dynamic load testing can be done during installation or theseafter sensorsinstallation.

The procedure is based on the [[case method]] of pile testing and is standardized by ASTM D4945-00 Standard Test Method for [[High Strain Dynamic Testing]] of Piles. It may be performed on [[pile|drivenall piles]], regardless drilledof shaftstheir installation and other cast in place foundationsmethod. In addition to bearing capacity, Dynamic Load Testing gives information on resistance distribution (shaft resistance and end bearing) and evaluates the shape and integrity of the foundation element.

The foundation bearing capacity results obtained with dynamic load tests correlate well with the results of [[Static load testing|static load tests]] performed on the same foundation element.{{Citation needed|date=July 2013}}

==See also==

* [[StatnamicPile loadintegrity test]]

*[[Pile integrity test]]

==References==

* Rausche, F., Moses, F., Goble, G. G., September, 1972. Soil Resistance Predictions From Pile Dynamics. ''Journal of the Soil Mechanics and Foundations Division'', American Society of Civil Engineers. Reprinted in ''Current Practices and Future Trends in Deep Foundations'', Geotechnical Special Publication No. 125, DiMaggio, J. A., and Hussein, M. H., Eds, August, 2004. American Society of Civil Engineers: Reston, VA; 418-440418–440.

* Rausche, F., Goble, G.G. and Likins, G.E., Jr. (1985). [https://dx.doi.org/10.1061/(ASCE)0733-9410(1985)111:3(367) Dynamic Determination of Pile Capacity]. ''Journal of the Geotechnical Engineering Division'', 111(3), 367–383.

* Rausche, F., Moses, F., Goble, G. G., September, 1972. Soil Resistance Predictions From Pile Dynamics. ''Journal of the Soil Mechanics and Foundations Division'', American Society of Civil Engineers. Reprinted in ''Current Practices and Future Trends in Deep Foundations'', Geotechnical Special Publication No. 125, DiMaggio, J. A., and Hussein, M. H., Eds, August, 2004. American Society of Civil Engineers: Reston, VA; 418-440.

* Salgado, R. (2008). ''The Engineering of Foundations.'' New York:McGraw-Hill, Chapter 14 (pp. 669-713).

* Scanlan, R.H., and Tomko, J.J., 1960, "Dynamic Prediction of Pile Static Bearing Capacity", ''Journal of the Soil Mechanics and Foundations Division'', American Society of Civil Engineers, Vol. 86, No. SM4; 35-61

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{{Geotechnical engineering}}

[[Category:GeotechnicalIn engineeringsitu foundation tests]]

[[Category:Deep foundations]]

{{Civil-engineering-stub}}