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The Study on Local Composite Behavior of Connection Member between Steel Pipe Pile and Concrete Footing
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 Title & Authors
The Study on Local Composite Behavior of Connection Member between Steel Pipe Pile and Concrete Footing
You, Sung-Kun; Park, Jong-Myen; Park, Dae-Yong; Kim, Young-Ho; Kang, Won-Ho;
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Generally, application of steel pipe pile as deep foundation member needs special requirement for the connection method between steel pipe pile and concrete footing. Even though two types of connection method are suggested in the related specification, type B-method is provident. To investigate real structural behavior of type B connection, several load tests are done with carefully designed experimental system. The purpose of this experiment is mainly focused on the understanding of actual behavior which can be predicted by design theory. At this research stage, vertical and lateral loading test are done for three types of specimen to review stress concentration, formation and behavior of imaginary RC column in the footing and effect of non-slip device installed in the steel pipe pile. The load resistance mechanism in these specific connection method is predicted based on both experimental results. The three-dimensional finite element modeling is also done for the purpose of comparison between numerical and experimental result. With all the results gained from experiment the structural behavior of imaginary RC column in the design concept is confirmed. The role of non-slip device is very important and it affects the resistance capacity with help of composite action of concrete and steel pipe pile.
steel pipe pile;non-slip device;imaginary RC column;finite element method;connection method;composite action;
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