In this study, the effect of load application point (zp) on the load capacity (Qu) of helical anchors under inclined loading condition was investigated. For this purpose, coupled Eulerian-Lagrangian finite element analyses were performed for various configurations of helical anchor and load inclination angles (θ). The focus was on characterizing the optimum load application point that can most enhance the load capacity of helical anchors. Both inclined loading and load application point significantly affected the load capacity of the helical anchor. For the individual failure-mechanism case, the effect of θ on Qu was clearly beneficial in most cases, indicating that the individual configuration is more advantageous when a taut or catenary mooring type is adopted. The load capacity of the helical anchor increased as the load application point moved from the top to certain limit depth, below which the load capacity became reversely decreased with further increasing zp/L. The optimum loading depth was found at zp/L=0.625. The effect of zp on the pullout capacity was mainly controlled by the horizontal load component. Based on the results of this study, design equations for the load capacity of helical anchors with load application point are proposed.
|Journal||Journal of Geotechnical and Geoenvironmental Engineering|
|Publication status||Published - 2022 Oct 1|
Bibliographical noteFunding Information:
This research was conducted with the support of the National R&D Project for Smart Construction Technology (No. 22SMIP-A156488-03) funded by the Korea Agency for Infrastructure Technology Advancement under the Ministry of Land, Infrastructure and Transport, and managed by the Korea Expressway Corporation. This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2020R1A2C201196613).
© 2022 American Society of Civil Engineers.
All Science Journal Classification (ASJC) codes
- Environmental Science(all)
- Geotechnical Engineering and Engineering Geology