Numerical investigation of dynamic behavior of composite foundation composed of soilbags and piles by 3D elastoplastic FEM

Doi, Tatsuya; Murono, Yoshitaka; Iwai, Hiromasa; Zhang, Feng

doi:10.1016/j.sandf.2022.101158

Cited by 6 publications

(1 citation statement)

References 15 publications

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“…To address the high stress problems of piles and rafts [6,7], Wong et al, Lawal, and Doi et al [8][9][10] proposed disconnected pile-raft systems, which settled an interposed layer between the raft and piles. According to the materials used in the interposed layer, disconnected pile-raft systems can be divided into cushion layer pile-raft systems (CLPRS) and compressible block pile-raft systems (CBPRS).…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response of Pile-Raft Systems with Various Forms of Connection under Cyclic Condition

Du,

Lei,

Ren

et al. 2023

Shock and Vibration

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This study aimed to examine the aseismic performance of the pile-raft systems with various connection forms. The related shaking table test and numerical simulation were performed for in-depth investigation. The acceleration response spectra on the top of the soil layer and raft were obtained and plotted for contrastive analysis based on the model test at a reduced scale of 1 : 30 and finite element numerical simulation. Accordingly, the working mechanisms of the pile-raft systems in conventional connections with the embedment of the compressible blocks and cushion layers under cyclic loading were explored. The results showed that the embedment of the cushion layer on the pile top could most significantly mobilize the potential of the foundation soil, effectively reduce the bending moment peak of the pile, and reduce the acceleration amplification effect on the top of the soil layer and raft. The embedment of the compressible block on the pile top most markedly reduced the bending moment peak of the pile and effectively mobilized the potential of the foundation soil, which was most favorable for lowering the amplification effect of acceleration on the top of the soil layer and raft.

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