Physical and Numerical Models of Mechanically Stabilized Earth Walls Using Self-Fabricated Steel Reinforcement Grids Applied to Cohesive Soil in Vietnam
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Published:2024-02-03
Issue:3
Volume:14
Page:1283
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ISSN:2076-3417
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Container-title:Applied Sciences
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language:en
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Short-container-title:Applied Sciences
Author:
Chau Truong-Linh1ORCID, Nguyen Thu-Ha1, Pham Van-Ngoc1ORCID
Affiliation:
1. Faculty of Bridge and Road Engineering, The University of Danang—University of Science and Technology, 54 Nguyen Luong Bang Street, Danang City 550000, Vietnam
Abstract
Mechanically stabilized earth (MSE) walls have been widely applied in construction to maintain the stability of high embankments. In Vietnam, imported reinforcement materials are expensive; thus, finding locally available materials for MSE walls is beneficial. This study examines the behavior of an MSE wall using local reinforcement materials in Danang, Vietnam. The MSE was reinforced by self-fabricated galvanized steel grids using CB300V steel with 3 cm ribs. The backfill soil was sandy clay soil from the local area with a low cohesion. A full-scale model with full instrumentation was installed to investigate the distribution of tensile forces along the reinforcement layers. The highest load that caused the wall to collapse due to internal instability (reinforcement rupture) was 302 kN/m2, which is 15 times greater than the design load of 20 kN/m2. The failure surface within the reinforced soil had a parabolic sliding shape that was similar to the theoretical studies. At the failure load level, the maximum lateral displacement at the top of the wall facing was small (3.9 mm), significantly lower than the allowable displacement for a retaining wall. Furthermore, a numerical model using FLAC software 7.0 was applied to simulate the performance of the MSE wall. The modeling results were in good agreement with the physical model. Thus, self-fabricated galvanized steel grids could confidently be used in combination with the local backfill soil for MSE walls.
Funder
Ministry of Education and Training, The University of Danang, University of Science and Technology
Subject
Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science
Reference38 articles.
1. Berg, R., Christopher, B., and Samtani, N. (2009). Design of Mechanically Stabilized Earth Walls and Reinforced Soil Slopes. 2. Reinforced Earth Highway Embankment-Road 39;Chang;Highw. Focus,1972 3. Chau, T.-L., Nguyen, T.-H., and Vu, D.-P. (2022). Proceedings of CIGOS 2021, Emerging Technologies and Applications for Green Infrastructure: Proceedings of the 6th International Conference on Geotechnics, Civil Engineering and Structures, Springer. 4. Khan, B.J., Ahmad, M., Sabri, M.M.S., Ahmad, I., Zamin, B., and Niekurzak, M. (2022). Experimental and Numerical Evaluation of Mechanically Stabilized Earth Wall with Deformed Steel Bars Embedded in Tire Shred-Sand Mixture. Buildings, 12. 5. Full-Scale Mechanically Stabilized Earth (MSE) Walls under Strip Footing Load;Ahmadi;Geotext. Geomembr.,2018
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