STP835

    Lateral-Load Test of an Aged Drilled Shaft

    Published: Jan 1984


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    Abstract

    A lateral-load test was conducted on a 0.46-m-diameter concrete drilled shaft constructed July 1966 in stiff expensive-clay soil. This 10.5-m-long test shaft had been subject to considerable uplift thrust from swelling of adjacent soil. The lateral-load behavior was reasonably simulated by solutions of the elastic beam-column differential equation. Solutions assuming a linearly increasing soil modulus with depth evaluated from triaxial strength tests were found in good agreement with the field load test results up to at least ½ of the yield load. Solutions using p-y curves developed from laboratory undrained strengths, and field pressuremeter tests provided good overall agreement with the field load test results.

    Keywords:

    lateral loads, drilled shafts, bored piles, caissons, pressuremeter, undrained strength, elastic modulus


    Author Information:

    Johnson, LD
    Research civil engineer, U.S. Army Engineer Waterways Experiment Station, Vicksburg, Miss.

    Briaud, J-L
    Associate professor, Texas A&M University, College Station, Tex.

    Stroman, WR
    Project engineer, U.S. Army Engineer District, Fort Worth, Tex.


    Paper ID: STP36820S

    Committee/Subcommittee: D18.11

    DOI: 10.1520/STP36820S


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