TY - JOUR ID - TI - EFFECT OF SOIL DENSITY AND PLUG CHARACTERISTICS ON BEHAVIOR OF SINGLE PIPE PILE EMBEDDED IN COHESIONLESS SOIL AND SUBJECTED TO UPLIFT FORCE AU - Husain A. Abdul-Husain AU - Hanaa S. Hamadi PY - 2021 VL - 12 IS - 3 SP - 1 EP - 11 JO - KUFA JOURNAL OF ENGINEERING مجلة الكوفة الهندسية SN - 20715528 25230018 AB - It is a significant issue to analyze and understand the pile’s behavior as well as to predict thepiles’ capacity exposed to uplifting load when designing a foundation. Experimental modeltests have been conducted for a single pile embedded in cohesionless soil and subjected to upliftforce. The experimental tests were performed using open-ended steel pipe piles with circularcross-sectional area an outer diameter of 50 mm in steel soil box (0.5*0.5) with four differentheight (0.30, 0.50 and two with 0.40 m). The tested piles have been embedment with penetrationratios (PR=L/D) of 10. Three different densities (25%, 50% and 75%) have been used toperform the tests. In addition three tests have been made with relative density of 50% toinvestigate the function the developed soil column inside the pile (soil plug) during installation.The results revealed that the behavior of single piles depends mainly on soil density and theultimate pull-out capacity of the pile increases with the increasing of the soil relative densityand used the data from this tests to presented formula to estimate the IFR and takes the soil stateparameter as a qualitative variable. The results showed also that the removing of plugging soildecreases the pile’s pull-out capacity by about 85%. Whilst, using of closed-end or filled withconcrete give higher capacity than that of open-end pipe pile by about 33% and 87%respectively.

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