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Influence of Seismic Motions on the Behavior of Cantilever Sheet Pile Wall Subjected to Infinite Uniform Surcharge Loading
The behavior of cantilever sheet pile wall in an earthquake susceptible area was regulated by soil liquefaction, induced pore water pressure, and soil and wall properties. A dynamic analysis of cantilever sheet pile wall having infinite surcharge load was executed by using finite difference–based computer program subjected to the 1994 Northridge, 1989 Loma Gilroy, and 2001 Bhuj motions. The different liquefiable and nonliquefiable soil layers are simulated by properties of Pohang sand for UBCSAND and Mohr–Coulomb constitutive models, respectively. The ground water table was assumed at the ground surface. It was observed that the maximum bending moment can occur at any instant, not necessarily at the instant of maximum acceleration. In the liquefiable layer, the soil stiffness and shear strength decreased, causing the loss in acceleration amplification factor, and maximum amplification factor was obtained for the motion with the lowest bedrock-level acceleration. The bending moment in the cantilever sheet pile wall depended on the bedrock-level acceleration, whereas displacement depended on both the duration of the time history as well as bedrock-level acceleration. The soil was liquefied only in the case of the 1994 Northridge motion with no surcharge, and by placing the surcharge on the backfill, the liquefaction resistance increased. The bending moment, displacement, and settlement decreased with increasing distance of the surcharge load from the cantilever sheet pile wall. The present study was validated by the experimental results of cantilever walls in cohesionless dry soil.
Influence of Seismic Motions on the Behavior of Cantilever Sheet Pile Wall Subjected to Infinite Uniform Surcharge Loading
The behavior of cantilever sheet pile wall in an earthquake susceptible area was regulated by soil liquefaction, induced pore water pressure, and soil and wall properties. A dynamic analysis of cantilever sheet pile wall having infinite surcharge load was executed by using finite difference–based computer program subjected to the 1994 Northridge, 1989 Loma Gilroy, and 2001 Bhuj motions. The different liquefiable and nonliquefiable soil layers are simulated by properties of Pohang sand for UBCSAND and Mohr–Coulomb constitutive models, respectively. The ground water table was assumed at the ground surface. It was observed that the maximum bending moment can occur at any instant, not necessarily at the instant of maximum acceleration. In the liquefiable layer, the soil stiffness and shear strength decreased, causing the loss in acceleration amplification factor, and maximum amplification factor was obtained for the motion with the lowest bedrock-level acceleration. The bending moment in the cantilever sheet pile wall depended on the bedrock-level acceleration, whereas displacement depended on both the duration of the time history as well as bedrock-level acceleration. The soil was liquefied only in the case of the 1994 Northridge motion with no surcharge, and by placing the surcharge on the backfill, the liquefaction resistance increased. The bending moment, displacement, and settlement decreased with increasing distance of the surcharge load from the cantilever sheet pile wall. The present study was validated by the experimental results of cantilever walls in cohesionless dry soil.
Influence of Seismic Motions on the Behavior of Cantilever Sheet Pile Wall Subjected to Infinite Uniform Surcharge Loading
Nat. Hazards Rev.
Singh, Akshay Pratap (author) / Chatterjee, Kaustav (author)
2023-05-01
Article (Journal)
Electronic Resource
English
Bending Moment Distribution Along the Sheet Pile Wall due to Surcharge Loading
| Springer Verlag | 2024