| Title |
Performance Evaluation of Waveform Micropile with Different Shapes by Centrifuge Test |
| Authors |
장영은(Jang, Young-Eun) ; 한진태(Han, Jin-Tae) |
| DOI |
https://doi.org/10.12652/Ksce.2016.36.6.1049 |
| Keywords |
마이크로파일;파형 마이크로파일;제트 그라우팅 공법;원심모형실험;전단키 Micropile;Waveform micropile;Jet grouting method;Centrifuge test;Shear key |
| Abstract |
The waveform micropile is a type of foundation that has a single or multiple shear keys on the pile shaft, and it is constructed through a jet grouting method as a way to increase the shaft resistance of the bonded area between the pile and the soil. In this paper, a geotechnical centrifuge test was performed to study the axial performance of the waveform micropile from other models. The six test models consisted of three waveform micropiles with a single shear key at three different depths, a waveform micropile with multiple shear keys, a conventional micropile, and a jet grouting micropile. Based on the test results, it was clearly shown that the waveform micropile increased in its bearing capacity compared to the other models without the shear key. Additionally, it was observed that the confining pressure for the location of a shear key is directly related to the increase of the bearing capacity. |