Seismic response of nonstructural components supported by a 4-story SMRF: Effect of nonlinear soil–structure interaction

Raychowdhury, P. N.; Ray-Chaudhuri, Samit

doi:10.1016/j.istruc.2015.04.006

Cited by 15 publications

(4 citation statements)

References 36 publications

(48 reference statements)

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“…The influence of nonlinear SSI on the seismic response of acceleration-sensitive non-structural components of a four-story steel momentresisting frame is investigated. The results suggest that nonlinear SSI positively impacts the performance of the non-structural components of the structure[83].…”

mentioning

confidence: 88%

Approaches considering non-linearity in soil-foundation-interaction: A State-of-the-Art Review

Mourya¹,

Pandey²,

Patel³

et al. 2023

Res. Eng. Struct. Mater.

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Seismic excitation causes the soil to begin acting nonlinearly at higher strain. Hence, the nonlinearity of the soil, foundation, and structure should be appropriately considered. This can be achieved by proper modelling of soilstructure-foundation interaction (SSI). The continuum, Winkler-based, and Macroelement models are the major modelling techniques for considering SSI. The continuum method involves determining absorbing boundaries, the size of the soil domain, soil element size, constitutive soil model, and soil structure interface. In contrast, the Winkler-based model uses nonlinear spring and dashpot to represent inelastic behaviour and energy dissipation properties of soil, respectively. Macroelement replaces the entire soil foundation arrangement with one element at the bottom of the superstructure. The trade-off between the advantageous effects of the SSI model, particularly in terms of energy dissipation, and its unfavourable effects, such as settling or tilting, should also be optimised during the analysis and design phases. The present paper aims to provide a concise review and comparative analysis of the several methodologies proposed by the researchers that consider the nonlinearity in soil-foundation-structure interaction (SSI). The importance of the study lies in the adoption of an approach that reduces computational effort and time. Moreover, the experimental works are also reviewed with regard to the soil structure interaction. It can be inferred from the current study that various approaches have some benefits and drawbacks; thus, these approaches can opt accordingly.

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mentioning

confidence: 88%

Approaches considering non-linearity in soil-foundation-interaction: A State-of-the-Art Review

Mourya¹,

Pandey²,

Patel³

et al. 2023

Res. Eng. Struct. Mater.

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show abstract

“…The robustness of SSI investigation comes along with the soil modelling. Seismic code provisions do not prescribe nonlinear soil behaviour, however, it is possible near-field soil to experience nonlinearity causing decrease or increase to seismic demand (Raychowdhury and Ray-Chaudhuri 2015;Sáez et al 2011).…”

Section: Nonstructural Componentmentioning

confidence: 99%

On the seismic fragility of pipe rack—piping systems considering soil–structure interaction

Sarno

Karagiannakis

2020

Bull Earthquake Eng

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Piping systems constitute the most vulnerable component in down-and mid-stream facilities posing immediate threat to human lives, communities financial robustness and environment. Pipe racks present several mechanical and geometrical idiosyncrasies compared to common buildings and the seismic response is governed by the pipework layout. Important design requirements e.g. dynamic interaction between pipelines and supporting structure are commonly overlooked during pipe racks design process and uncertainties relevant to modelling of soil or seismic input are not quantified. In the present work, after reviewing the technical literature and codes, a 3D RC rack was used as a testbed and analysed as coupled and decoupled with a non-seismic code conforming piping system accounting for soil-structure interaction. Incremental dynamic analysis was adopted as an assessment methodology for deriving fragility curves considering ground motions in near-and far-field conditions. It was deduced that the modelling (boundary conditions of pipes) was the most considerable uncertainty since it increased the probability of collapse limit state of structural members from 0 to 59%. It was also demonstrated that soil deformability as well as source conditions altered considerably the dispersion of intensity measure conditional on engineering demand parameter of structural and nonstructural members. The results may be another indication that code provisions should be more normative regarding industrial pipe racks.

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“…e well-known theory of beam on nonlinear Winkler foundation (BNWF) was utilized for modeling the flexibility of the foundation, as used in several studies [29][30][31][32][33][34][35][36][37][38]. e simplicity and capability of the BNWF model in accounting for nonlinear behavior of shallow foundations are its two main beneficial features.…”

Section: Foundation Systemmentioning

confidence: 99%

The Effect of Foundation Flexibility on Probabilistic Seismic Performance of Plan‐Asymmetric Buildings with Different Strength Distributions

Osalu

Shakib

2020

Advances in Civil Engineering

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In this research, the probabilistic seismic performance of asymmetric reinforced concrete wall-frame buildings with different strength distributions incorporating foundation flexibility effects is examined. By using probability-based performance evaluation approach, it is possible to provide a more accurate prediction of the different strength distribution effect on the seismic performance of asymmetric buildings and find the most efficient strength distribution for meeting each performance level. These efficient distributions can be adopted in the performance-based design of asymmetric buildings. For this purpose, first, the regression analysis and the concepts of efficiency and sufficiency were used to determine an optimal intensity measure (IM) for incremental dynamic analysis and evaluating the seismic response of the considered building models. Then, the proper magnitude of interstory drift capacity for this type of buildings in each limit state was estimated using the damage index concept. Finally, the effects of different strength distributions and the flexibility of foundation were studied on the seismic performance of the asymmetric buildings by investigating the mean annual frequencies of exceeding structural performance levels and confidence levels to satisfy performance objectives. It is concluded that irregular distributions of stiffness and strength in the plan of a building highly affect the seismic performance of buildings. Also, the results show that the optimum strength distribution is a function of the objective performance level and these optimum strength distributions are the same for both fixed- and flexible-base conditions. Meanwhile, the flexible effect of foundation increases the mean annual frequencies of exceedance within the range of 10% to 45% and significantly decreases the confidence levels in most cases.

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Seismic response of nonstructural components supported by a 4-story SMRF: Effect of nonlinear soil–structure interaction

Cited by 15 publications

References 36 publications

Approaches considering non-linearity in soil-foundation-interaction: A State-of-the-Art Review

Approaches considering non-linearity in soil-foundation-interaction: A State-of-the-Art Review

On the seismic fragility of pipe rack—piping systems considering soil–structure interaction

The Effect of Foundation Flexibility on Probabilistic Seismic Performance of Plan‐Asymmetric Buildings with Different Strength Distributions

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