Idealisation of soil–structure system to determine inelastic seismic response of mid-rise building frames

Tabatabaiefar, Hamid Reza; Fatahi, Behzad

doi:10.1016/j.soildyn.2014.08.007

Cited by 61 publications

(13 citation statements)

References 23 publications

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“…It is well known that the soil-structure interaction (SSI) plays an important and essential role in engineering design. Actually, the influence of SSI on the seismic response of structures has attracted the attention of a large number of engineers, and many research methods have been developed [38][39][40][41]. Research studies show that the rocking-induced nonlinearities are inevitable in soil and soil-foundation interface, which will cause permanent deformations and thus damage the building, particularly for the buildings adopting the shallow foundations, as it pointed out that the deep foundations (e.g., plie foundations) are the most common solution for the problems caused by the rocking-induced nonlinearities.…”

Section: Discussionmentioning

confidence: 99%

The Moment-Independent Importance Analysis of Structural Seismic Requirements Based on Orthogonal Polynomial Estimation

Wang

2020

Mathematical Problems in Engineering

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The structural damping ratio, structural quality, yield strength, and elastic modulus of section steel, compressive strength, elastic modulus of concrete, yield strength, and elastic modulus of steel bars play important roles in the stability of the steel-reinforced concrete (SRC) frame structure, which are usually uncertain. However, their importance influence on the different seismic demands of SRC is rarely investigated simultaneously. In order to investigate the effects of the above parameters on four seismic demands (i.e., the top displacement, the maximum floor acceleration, the base shear force, and the maximum interstory displacement angle) of SRC frame structures, the orthogonal polynomial estimation method is first applied to the importance analysis of structural seismic demand based on the moment-independent method. Two engineering examples are performed to verify the accuracy and efficiency of the proposed method. The results have the characteristics of fast convergence and are in good agreement with those obtained by the moment-independent method based on kernel density estimation. The variance importance index based on Monte Carlo (MC) method is also calculated for comparison. The influence of each random variable on the four structural seismic demands is basically the same. Therefore, the accuracy and efficiency of the proposed method are proved sufficiently.

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Section: Discussionmentioning

confidence: 99%

The Moment-Independent Importance Analysis of Structural Seismic Requirements Based on Orthogonal Polynomial Estimation

Wang

2020

Mathematical Problems in Engineering

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“…In this study, the importance of considering directionality effects of ground motions in 2D DSSI analyses has been highlighted. Two-dimensional models are widely used to perform DSSI analyses, since they are less computationally expensive than a three-dimensional (3D) one [53][54][55][56][57]. On the other hand, an important deficiency in DSSI analyses, usually performed, is that only the as-recorded components of ground motions are adopted, without considering other angles that could lead to a more severe structural response.…”

Section: Discussionmentioning

confidence: 99%

Dynamic soil-structure interaction analyses considering directionality effects

Pinzón

Mánica

Pujades

et al. 2020

Soil Dynamics and Earthquake Engineering

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“…In numerical studies performed by different authors (e.g., [9][10][11][12]), concerning the 2D versus 3D modeling of the SSI, the difference between the results for the 2D and 3D models were negligible where the artificial model was adopted for rigid soil [12]. A large amount of other research [13][14][15][16][17] has applied a similar analysis.…”

Section: Materials Propertiesmentioning

confidence: 95%

Analysis of the Second Order Effect of the SSI on the Building during a Seismic Load

et al. 2021

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The type and the properties of the soil can potentially intensify the internal forces on buildings during seismic loads. To predict the effects of the soil parameters on the soil–structure interaction of buildings, it is necessary to consider the soil–structure interaction (SSI) in the modeling process. Therefore, this document aims to evaluate the seismic effect on the maximal displacement and inter-story drift, and evaluate the behavior of buildings under the second-order effect known in the literature as the P-delta effect. For this purpose, three cases of buildings with 5, 10 and 15 stories were modelled using a FLAC 2D finite-difference element calculation software with infinite soil conditions, including five types of base with four types of soil (one cohesive soil and three non-cohesive soils) considering the soil–structure interaction and a fixed base (without soil–structure interaction). According to the results for the above-mentioned boundary, as the height of the building increases and due to the weak properties of the soil, we notice that the maximal displacements and inter-story drift increase considerably. To that purpose, we recommend considering the second-order effect in seismic design, especially for non-cohesive soil.

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Idealisation of soil–structure system to determine inelastic seismic response of mid-rise building frames

Cited by 61 publications

References 23 publications

The Moment-Independent Importance Analysis of Structural Seismic Requirements Based on Orthogonal Polynomial Estimation

The Moment-Independent Importance Analysis of Structural Seismic Requirements Based on Orthogonal Polynomial Estimation

Dynamic soil-structure interaction analyses considering directionality effects

Analysis of the Second Order Effect of the SSI on the Building during a Seismic Load

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