The test on bearing characteristics of variable cross-section H-section pile and numerical simulation analysis

Based on the measured data of single pile static loading test, the characteristics of the variable crosssection H-section pile under vertical load, such as the change and settlement, pile skin friction, pile end resistance and pile axial force et al were researched. The result showed that variable cross-section Hsection pile arose two pile skin friction wave crests and one negative skin friction crest with obvious variation trend. Approximate 50% of the pile bearing capacity shared by the pile skin friction and the end resistance was endured by the pile end resistance. The pile would be in the form of pierce fracture under a much stronger effect of the pile end load and the experimental results could provide a reference for the pile design or the experiment. Through performing numerical simulation of single pile static load loading mode by taking the elastic-plastic finite element method and simulating the discontinuity between the pile and soil, the result of finite element numerical simulation was matched with the test measuring result well. Compared the load displacement curve of the finite element numerical simulation with the test, the reliability of the finite element method with a reasonable model and physical-mechanical parameters has been verified. © Sila Science. All Rights Reserved.