Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Lateral Load Tests On Piles In Bridge Embankments
Field lateral load tests were performed on embankment piles at three bridge sites in northern California. The investigation included determination of lateral load- deflection behavior individual vertical embankment piles, correlation of test results with theoretical solutions, and determination of experimental values of nh (or k) for bridge embankment conditions. The pile tests showed that: (1) a linear variation of horizontal subgrade modulus with depth (k=nh x) is a reasonable approximation; (2) values of nh varied from 10 to 65 lb/in 3 (2.7 to 17.6 N/ cm3), with higher values for the stiffer embankment; (3) test results suggest a simple rough approximation: nh = N is the average blows/ ft from standard penetration tests within the depth of the embankment; (4) limited data indicate that a fixed-head pile resists approximately twice the lateral load of a free-head pile at the same lateral deflection of 0.25 inches (0.64 cm); (5) the computed effective length of the embankment test piles varied from 8 to 12 ft. (2.4 to 3.7 m); (6) a compacted fill of 12 ft. provides the major support for a laterally loaded pile, and the influence of the underlying natural deposit is negligible.
Lateral Load Tests On Piles In Bridge Embankments
Field lateral load tests were performed on embankment piles at three bridge sites in northern California. The investigation included determination of lateral load- deflection behavior individual vertical embankment piles, correlation of test results with theoretical solutions, and determination of experimental values of nh (or k) for bridge embankment conditions. The pile tests showed that: (1) a linear variation of horizontal subgrade modulus with depth (k=nh x) is a reasonable approximation; (2) values of nh varied from 10 to 65 lb/in 3 (2.7 to 17.6 N/ cm3), with higher values for the stiffer embankment; (3) test results suggest a simple rough approximation: nh = N is the average blows/ ft from standard penetration tests within the depth of the embankment; (4) limited data indicate that a fixed-head pile resists approximately twice the lateral load of a free-head pile at the same lateral deflection of 0.25 inches (0.64 cm); (5) the computed effective length of the embankment test piles varied from 8 to 12 ft. (2.4 to 3.7 m); (6) a compacted fill of 12 ft. provides the major support for a laterally loaded pile, and the influence of the underlying natural deposit is negligible.
Lateral Load Tests On Piles In Bridge Embankments
J. A. Paduana (Autor:in) / W. S. Yee (Autor:in)
1974
49 pages
Report
Keine Angabe
Englisch
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