Modeling liquefaction Mitigation of loose soil subjected to sesimic loads supported by vertical drains
Volume Title: ICASGE2025
Paper ID : 1106-ICASGE-FULL
Authors
1Civil Engineering ,Faculty of engineering , tanta,University , Alexandria ,Egypt
2Geotechnical Engineering (GEO)
3Structural department, Faculty of Engineering, Tanta University, Tanta, Egypt.
Abstract
Liquefaction is one of the most dramatic defects of granular soil. This phenomenon is mostly observed when loose sand is subjected to a dynamic load or earthquake. In this study, the liquefaction that affected the loose soil is evaluated, and some recommendations are introduced. (2-D) Numerical analysis using Plaxis (8.2) was conducted to simulate the effect of number and spacing of gravel drains supporting loose sand soil under seismic loads. The studied model was carried out on multi-layer soil supported by gravel drains subjected to dynamic loads. It was found that gravel drain enhanced the soil behavior and reduced the damage that occurred. Liquefaction of the loose soil could be constrained by increasing the shearing parameters of the soil. The damages of a dynamic load are time-dependent, so the corresponding damage increases as the time of the applied dynamic load increases. Moreover, the many straining actions are evaluated, and a comparative study is introduced, such as access pore water pressure, total vertical displacement, deformation of soil, and velocity.
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