Three-Dimensional Seismic Nonlinear Analysis of Topography–Structure–Soil–Structure Interaction for Buildings near Slopes

Shamsi, Mohammad; Shabani, Mohammad Javad; Vakili, Amir Hossein

doi:10.1061/(asce)gm.1943-5622.0002301

Cited by 10 publications

(7 citation statements)

References 73 publications

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“…Incorporating soil-structure interaction (SSI) into a seismic design is essential for several reasons [3,14,20]: i. Site-specific ground motion: The ground motion at a site during an earthquake is greatly influenced by the local soil conditions. The soil can amplify or dampen seismic waves, impacting the extent of shaking a structure undergoes.…”

Section: Importance Of Soil-structure Interaction In Seismic Designmentioning

confidence: 99%

“…Incorporating soil-structure interaction (SSI) into a seismic design can be challenging due to its inherent complexity and the resources required for proper analysis. Here are some of the primary challenges [3,20]: i. Complexity of variables and uncertainties: The behavior of soil during seismic events is influenced by numerous variables such as its stiffness, damping, density, and many others.…”

Section: Challenges In Incorporating Ssi In Seismic Designmentioning

confidence: 99%

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Soil-Structure Interaction: Understanding and Mitigating Challenges

Akbar Firoozi,

Asghar Firoozi

2024

Civil Engineering

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This chapter provides a comprehensive analysis of Soil-Structure Interaction (SSI), a key component in solving complex engineering challenges amidst rapid urbanization and changing environmental conditions. It elucidates the theoretical principles and practical implications of SSI, emphasizing its role in creating sustainable and resilient engineering solutions. The chapter explores the soil\'s response to different load scenarios, highlighting the impact on structural reliability and integrity. The narrative includes real-world case studies demonstrating the practical application of SSI principles, advocating their integration into contemporary construction methodologies for improved structural safety. It also outlines innovative strategies to tackle SSI-related challenges, such as employing advanced materials and computational models. Finally, the focus is placed on sustainability and resilience-driven solutions designed to withstand the tests of time and climate change. Serving as a valuable guide for various stakeholders in the field, this chapter underscores the significance of SSI in the development of environmentally conscious and structurally robust constructions.

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Section: Importance Of Soil-structure Interaction In Seismic Designmentioning

confidence: 99%

Section: Challenges In Incorporating Ssi In Seismic Designmentioning

confidence: 99%

Soil-Structure Interaction: Understanding and Mitigating Challenges

Akbar Firoozi,

Asghar Firoozi

2024

Civil Engineering

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“…Nevertheless, for a slope with a similar condition (in terms of slope geometry and soil type), Shamsi et al 82 reported a critical angle value of 30 • . In the next sections' analyses, only the slope angle of 30 • was evaluated because of creating more critical responses (the minimum factors of safety).…”

Section: F I G U R Ementioning

confidence: 99%

“…There are several factors for decreasing or increasing the responses, and to determine the critical slope angle, different conditions must be investigated on a case‐by‐case basis. Nevertheless, for a slope with a similar condition (in terms of slope geometry and soil type), Shamsi et al 82 . reported a critical angle value of 30°.…”

Section: Numerical Modeling Proceduresmentioning

confidence: 99%

Slope topographic effects on the nonlinear seismic behavior of groups of similar buildings

Shamsi

Shabani

Zakerinejad³

et al. 2022

Earthq Engng Struct Dyn

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The occurrence of vibrational energy exchange between neighboring buildings via soil is a well-known issue today as structure-soil-structure interaction (SSSI) problems. Furthermore, the seismic performance of buildings near the slopes considering seismic topography-soil-structure interaction (TSSI) is entirely different from their performance on the flat grounds considering seismic soilstructure interaction (SSI). Therefore, this study evaluates the seismic response of three moments resistant frame steel buildings with 15, 10, and 5 stories using three dimensional numerical analysis as a new topography-structure-soilstructure interaction (TSSSI) problem. This issue has not been investigated in previous studies to the best of the authors' knowledge. In each case of TSSSI, two, three, and four buildings with similar dynamic properties were simulated simultaneously. The effects of foundation's rocking, numbers of buildings, and the 2D and 3D arrangements of buildings were investigated, and the results of TSSSI cases were compared with the corresponding SSSI cases. The inelastic behavior for both building components and soil was considered in the simulations. Analyzes are performed based on seven earthquake records from which the average value was taken as final results. Results show that it is essential to consider the TSSSI effect, and it can completely change the seismic performance of buildings near the slopes. Although the effects of TSSI and SSSI on the seismic responses of the low-rise similar structures are negligible relative to the SSI cases, the results show that the nonlinear TSSSI effects of adjacent buildings should be fully considered even for 5-story low-rise structures.

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“…For example, Ai et al [11] used a fractional viscoelastic cross-anisotropic saturated soil model to analyze the time-dependent behavior of the interaction between the soil and slab. Shamsi et al [12] conducted a nonlinear analysis of the interaction between factors such as topography, structure, and soil that affect buildings near slopes. They utilized an elastoplastic hysteretic model with anisotropic hardening.…”

Section: Introductionmentioning

confidence: 99%

Integrated Time-Dependent Analysis of a Hydraulic Structure on Soft Foundations during Construction

Xu,

Ye,

Pan

et al. 2024

Water

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An integrated model that considers multiphysics is necessary to accurately analyze the time-dependent response of hydraulic structures on soft foundations. This study develops an integrated superstructure–foundation–backfills model and investigates the time-dependent displacement and stress of a lock head project on a soft foundation during the construction period. Finite element analyses are conducted, incorporating a transient thermal creep model for concrete and an elasto-plastic consolidation model for the soil. The modified Cam-clay model is employed to describe the elasto-plastic behavior of the soil. Subsequently, global sensitivity analyses are conducted to determine the relative importance of the model parameters on the system’s response, using Garson’s and partial derivative algorithms based on the backpropagation (BP) neural network. The results indicate that the integrated system exhibits pronounced time-dependent displacement and stress, with dangerous values appearing during specific periods. These values are easily neglected, highlighting the importance of integrated time-dependent analysis. Construction activities, particularly the backfilling process, could cause a sudden change in stress and significantly impact the stress redistribution of the superstructure. Additionally, the mechanical properties of concrete have a significant impact on the stress on the superstructure, while the mechanical properties of the soil control the settlement of the integrated system.

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Three-Dimensional Seismic Nonlinear Analysis of Topography–Structure–Soil–Structure Interaction for Buildings near Slopes

Cited by 10 publications

References 73 publications

Soil-Structure Interaction: Understanding and Mitigating Challenges

Soil-Structure Interaction: Understanding and Mitigating Challenges

Slope topographic effects on the nonlinear seismic behavior of groups of similar buildings

Integrated Time-Dependent Analysis of a Hydraulic Structure on Soft Foundations during Construction

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