FOUNDATION INVESTIGATIONS, NASA MISSISSIPPI TEST FACILITY. REPORT I. STATIC VIBRATORY LOAD TESTING OF FOUNDATION PILES AT TEST STAND S-1C.
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
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Investigations were conducted to determine the behavior of steel H piles and concrete-filled pipe piles subjected to static and vibratory loads. Field tests included static and vibratory loading of single piles and vibratory testing of a group of four H piles with a common cap. Each single pile and one pile of the four-pile group were instrumented with bonded foil-type gages prior to driving. Static loads of up to 200 tons were applied incrementally, and vibratory loads from 1 to 10 tons were applied over a range of frequencies at various static loadings. Strain, settlement, dynamic displacement, and critical frequencies were determined. Fundamental theory was developed for the dynamic behavior of the soil-pile system, and the theoretical data were compared with the experimental data. This study showed that the dynamic behavior of piles subjected to vibratory loads can be determined from static load tests and dynamic theory. Author
- Structural Engineering and Building Technology