Numerical Modeling of Multi-Tiered Reinforced Fly Ash Wall

DOI

No DOI

Published In

Volume 4, Issue 3 (2024)

Published Online

May-June 2024

Pages

47-55

Article Type

Research Article

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The multi-tiered wall functions as an earth-retaining structure akin to a reinforced wall. It's constructed with offsets between tiers, akin to a reinforced wall at certain heights. This study endeavours to utilize fly ash as a backfill for such a wall, focusing on analytical models. Both single and two-tiered models were analyzed to evaluate the impact of reinforcement length, spacing, and tier offset on vertical displacement, horizontal displacement, and normalized surcharge pressure. MIDAS GTS software is used to analyse the models.it is based on finite element analysis. Numerical findings reveal that introducing reinforcement leads to increased critical offsets between tiers. For instance, without reinforcement, offsets were observed at 0.4L, whereas with reinforcement, they increased to 0.6L, where L represents the lower tier height. The introduction of geogrid reinforcement results in a significant increase in normalized surcharge pressure, reaching up to 68.90% at a reinforcement length of 0.7H, where H represents the total wall height. Furthermore, as the length of jute geotextile reinforcement increases, horizontal displacement of the wall facing decreases by up to 98% compared to the unreinforced model. Conversely, increasing spacing between reinforcing layers leads to a rise in horizontal displacement of the wall facing.