Numerical Simulation and Analysis of Q-s Curve for Small Diameter Steel Pipe Piles
Currently,small-diameter steel pipe piles are commonly used in engineering.However,determining their vertical bearing capacity typically requires a static load test to obtain a load-settlement curve for assessment.Unfortunately,in-situ testing is a complex and time-consuming process that demands significant resources.Utilizing the theoretical model to derive the Q-s curve of small diameter steel pipe piles can not only eliminate the need for in-situ testing but also enhance the efficiency of design and construction.In this work,the Q-s curve of small diameter steel pipe piles is theoretically deduced by referring to the Goodman interface unit method without thickness in establishing a pile-soil contact surface unit in combination with the previous research.It is also compared and analyzed with the measured results to prove the applicability of the theoretical method and analyze the reasons for the errors in the results.Considering that smaller settlement has less influence on the bearing capacity,the Q-s curve can be obtained by the theoretical method in the engineering practice.
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