Finite element analyses of creep behaviors of non-reinforced and geogrid-reinforced sands

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Li F.-L., Peng F.-L., Kongkitkul W., Tatsuoka F.

ปีที่เผยแพร่ (ค.ศ.): 2011

Volume number: 32

Issue number: 4

หน้าแรก: 1200

หน้าสุดท้าย: 1204+1210

นอก: 1000-7598

eISSN: 1000-7598

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-79956205520&partnerID=40&md5=233abcf58d366cdcb99c5c1d976cda66

บทคัดย่อ

Based on the experimental results of creep tests under step loading in the plane strain compression, the creep behaviors of non-reinforced and geogrid-reinforced sands have been investigated. It is found that the creep deformation is affected by the initial stress level and the initial creep strain rate in a given creep loading stage. When monotonic loading is restarted from the end of each creep loading stage, the stress-strain relation shows a very high tangent stiffness. A nonlinear finite element analysis (FEA) incorporating the unified three-component elasto-viscoplastic constitutive model for both sands and geogrids is developed. The FEA can simulate the whole process including the monotonic loadings at a constant strain rate and the creep loading stages. By comparing the simulated results with the experimental results, it is shown that the developed elasto-viscoplastic FEA can simulate the creep behaviors of non-reinforced and geogrid-reinforced sands very well, especially for the high stiffness following a creep loading stage.

คำสำคัญ

Geogrids, Reinforced sands