Practical boundary element method for piled rafts

Shehata, Osama E.; Farid, Ahmed Fady; Rashed, Youssef F.

doi:10.1016/j.enganabound.2018.09.009

Cited by 8 publications

(2 citation statements)

References 22 publications

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“…The FE-BE coupling method is a method for calculating the superstructures and soil foundation following different methods. Generally, BEM is used to simulate the dynamic behavior of layered soils [94,95], while FEM is employed for superstructures. In some circumstances, only the far-field is calculated using FEM, which is defined as the scaled-boundary finite element method (SBFEM) [96].…”

Section: Finite Element Methods (Fem)mentioning

confidence: 99%

Seismic Assessment of Large-Span Spatial Structures Considering Soil–Structure Interaction (SSI): A State-of-the-Art Review

Zhan,

Xue,

et al. 2024

Buildings

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Soil–structure interaction (SSI), which characterizes the dynamic interaction between a structure and its surrounding soil, is of great significance to the seismic assessment of structures. Past research endeavors have undertaken analytical, numerical, and experimental studies to gain a thorough understanding of the influences of SSI on the seismic responses of a wide array of structures, including but not limited to nuclear power plants, frame structures, bridges, and spatial structures. Thereinto, large-span spatial structures generally have much more complex configurations, and the influences of SSI may be more pronounced. To this end, this paper aims to provide a state-of-the-art review of the SSI in the seismic assessment of large-span spatial structures. It begins with the modelling of soil medium, followed by the research progress of SSI in terms of numerical simulations and experiments. Subsequently, the focus shifts towards high-lighting advancements in understanding the seismic responses of large-span spatial structures considering SSI. Finally, some discussions are made on the unresolved problems and the possible topics for future studies.

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Section: Finite Element Methods (Fem)mentioning

confidence: 99%

Seismic Assessment of Large-Span Spatial Structures Considering Soil–Structure Interaction (SSI): A State-of-the-Art Review

Zhan,

Xue,

et al. 2024

Buildings

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“…A similar approach is presented in [10] to solve for a tensionless foundation. The analysis of the piled raft is presented in [11] where the pile-soil-raft interaction is considered.…”

Section: Introductionmentioning

confidence: 99%

Bem-Based Formulation for the Analysis of Multi-Story Buildings Including Soilstructure Interaction

Abdelhady

Farid

Rashed

et al. 2021

WIT Transactions on Engineering Sciences

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Modeling and analyzing multi-story buildings is an important part of structural engineering. Typically, this analysis is carried out using the finite element method by assembling the stiffness matrices of the floor elements and the vertical supporting elements at the intersecting nodes. Any consideration of soilstructure interaction (SSI) is often simplified using a Winkler model. However, the procedure for modeling practical buildings of complex geometries using the finite element method can be cumbersome. Alternatively, a new formulation that is based on the boundary element method (BEM) is presented that provides a seamless procedure for modeling practical buildings as the discretization of the floors is done at the floor perimeter and SSI is modeled using an elastic half space (EHS) model. The stiffness matrices of the slab and raft are generated using the BEM by introducing an additional collocation scheme at their intersection with the columns and the underlying soil. Columns are modeled as skeletal frame elements and the floors are considered as rigid diaphragms in their planes. Soil is modeled as an EHS and its stiffness matrix is derived based on the Bousinessq solution of an elastic, isotropic, homogenous, and infinite thickness half space. Assembly of the overall building stiffness matrix is carried out using the well-known assembly procedure associated with the stiffness analysis method. The proposed methodology is validated by comparing the results against the more traditional finite element approach. An illustrative example is solved showing agreement of the results between the proposed methodology and the finite element method.

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