Seismic history analysis of asymmetrical adjacent buildings with soil-structure interaction consideration

Uz, Mehmet E.; Hadi, Muhammad N.S.

doi:10.2495/eres110191

Cited by 4 publications

(1 citation statement)

References 10 publications

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“…To date, the SSI specialists use SASSI as an industrial standard, and the comparative tests versus the field results prove its quality. Many papers [9][10][11][12][13][14], have confirmed the important influence of SSI.…”

Section: Introductionmentioning

confidence: 99%

A method for converting the Ansys and Ls-dyna finite element model into SASSI code

Li¹,

Chen²

2016

WIT Transactions on the Built Environment

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In most national nuclear seismic codes, seismic analysis on the basis of dynamic soil-structure interaction is a basic requirement. However, after decades of intensive study, a certain gap between the research activities and practical activities remains. This is due, to a large extent, to the different computational concepts between code SASSI and the other general codes, such as Ls-dyna, Ansys and Abaqus. In this paper, a method for converting the Ansys/Ls-dyna finite element model into SASSI is developed, and the corresponding code is programmed in Matrix Laboratory (MATLAB) and Ansys Parametric Language (APDL). Through this method, firstly, the input files of every SASSI module are automatically generated according to the Ansys or Ls-dyna finite element model. Next, the SASSI code is called, and its modules are conducted sequentially until the full analysis is completed. The structural response results that are required by users are outputted and saved in the expected format. In this paper, after introducing the method step-by-step, the dynamic soil-structure interaction simulations of a pile-high-rise structure and a nuclear factory are, respectively, conducted using the Ls-dyna and SASSI programs. The comparison results prove the feasibility of the method produced in this paper.

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Section: Introductionmentioning

confidence: 99%

A method for converting the Ansys and Ls-dyna finite element model into SASSI code

Li¹,

Chen²

2016

WIT Transactions on the Built Environment

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Three-Dimensional Response of Neighboring Buildings Sitting on Pile Foundations to Seismic Pounding

Fatahi

Nguyen

et al. 2018

Int. J. Geomech.

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Three-dimensional non-linear seismic analysis of asymmetric structures on elastic soil

Teymoorian

Halabian

2022

Proceedings of the Institution of Civil Engineers - Structures

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An approximate method for non-linear seismic analysis of three-dimensional two-way asymmetric buildings resting on flexible foundations under bi-directional ground motions is presented. To take into account the soil–structure interface effect, the sub-structuring method with frequency-independent soil springs and dashpots was employed. To consider the non-linear behaviour of the structure, a modal stick with five degrees of freedom was used to simulate the multi-degree-of-freedom modal equations for the soil–structure system. Using the bifurcation characteristic of modal pushover curves, the modal stick was modified, by which the coupled modal non-linear translation and rotation deformations were simulated. The seismic responses of two flexibly supported asymmetric buildings (three and eight storeys) were evaluated by the uncoupled modal response history analysis (UMRHA) method employing the proposed modal stick. The seismic responses of the structures were also obtained by employing the rigorous non-linear response history analysis and the results were compared with the corresponding outcomes from UMRHA method. The comparison showed good agreement between the outcomes of the two analysis methods, thus demonstrating that the proposed three-dimensional non-linear analysis technique developed in this study is an effective and applicable tool for dealing with the non-linear analysis of flexibly supported two-way asymmetric-plan structures.

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Seismic history analysis of asymmetrical adjacent buildings with soil-structure interaction consideration

Cited by 4 publications

References 10 publications

A method for converting the Ansys and Ls-dyna finite element model into SASSI code

A method for converting the Ansys and Ls-dyna finite element model into SASSI code

Three-Dimensional Response of Neighboring Buildings Sitting on Pile Foundations to Seismic Pounding

Three-dimensional non-linear seismic analysis of asymmetric structures on elastic soil

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