Soil-structure Interaction Research Articles

Simple soil-structure interaction model for wind-induced vibrations in high-rise buildings

Simple soil-structure interaction model for wind-induced vibrations in high-rise buildings

Seismic soil-structure interaction analysis considering a layered half space subjected to geothermal induced seismicity

Seismic soil-structure interaction analysis considering a layered half space subjected to geothermal induced seismicity

Recommendations on finite element modelling of non-seismic excitation in soil-structure interaction problems

Recommendations on finite element modelling of non-seismic excitation in soil-structure interaction problems

Dynamic soil-structure interaction of a continuous railway bridge

Dynamic soil-structure interaction of a continuous railway bridge

The effect of dynamic soil-structure interaction on the response of periodic box girder bridges

The effect of dynamic soil-structure interaction on the response of periodic box girder bridges

Experimental and numerical assessment of soil-structure interaction effects in the case of mine-induced vibrations

Experimental and numerical assessment of soil-structure interaction effects in the case of mine-induced vibrations

A SEM/FEM weak coupling for a more accurate definition of seismic input excitation in soil-structure interaction studies: An adaptation for a massively parallel FEM resolution

A SEM/FEM weak coupling for a more accurate definition of seismic input excitation in soil-structure interaction studies: An adaptation for a massively parallel FEM resolution

A frequency-time domain approach for soil-structure interaction involving embedded structures

A frequency-time domain approach for soil-structure interaction involving embedded structures

Soil Structure Interaction of R.C. Building with Basement Resting on Pile Raft Foundation

Abstract: Historically, Basements or underground stories were built in a castle to use as a dunged on oar store room. However, in modern construction, the restrain to go deeper below the grade level in term so basements which can be utilized for parking, shopping mall or combination of both. In such cases, dynamic soil properties have a significant effect of activating dynamic soil structure interaction phenomena on during earthquake. Here in present study an effort is made to study the behavior of a building by varying number so basements considering dynamic soil structure interaction. Issues like considering higher frequency modes, influence zone to be considered for dynamic soil structure interaction, behavior of building with basements under different water level conditions for two different types of layered soil and their comparison with fixed based structure is deal with. It is observed that dynamic soil structure interaction can significant change the behavior of the building and hence it is recommended to perform dynamic soil structure interaction for building with multiple basements. In addition, some important recommendations are provided at the end to serve as a guide for researchers and practicing engineers.

Evaluating of 14H-Piles’ Load Capacity in Cohesionless Soils for Edward’s Project Using ?-Method and Finite Element Method

Abstract: This paper presents a comprehensive study on evaluating the load capacity of 14H-piles in cohesionless soils for Edward's infrastructure project[1]. The project, overseen by the Federal Highway Administration (FHWA) and the Colorado Department of Transportation (CDOT), focuses on bridge replacements in Edwards, Colorado, with an emphasis on foundation improvements using driven pile foundations[2]. The research utilizes Finite Element Analysis (FEA) and the β-method to assess the total bearing capacity of 14H-piles in sandy soil conditions[3]. Field exploration, including Standard Penetration Tests (SPT), is conducted to determine soil parameters, followed by calibration of soil strength parameters. The study involves modelling the piles using the Soil-Structure Interaction 3-D program (SSI3D) and comparing the total bearing capacity obtained from FEA with nominal capacities calculated by the β-method. Additionally, the paper discusses load resistance and factor design, as well as the importance of static load testing for validation[4]. The results highlight the efficacy of FEA in predicting pile behaviour and provide valuable insights for foundation design in similar geological settings.

Seismic Response Analysis of Underground Large Liquefied Natural Gas Tanks Considering the Fluid–Structure–Soil Interaction

Seismic Response Analysis of Underground Large Liquefied Natural Gas Tanks Considering the Fluid–Structure–Soil Interaction

Effects of soil small strain nonlinearity on the dynamic behavior of floating column structures considering soil-structure interaction

Effects of soil small strain nonlinearity on the dynamic behavior of floating column structures considering soil-structure interaction

Comparison of Asymmetric and Symmetric RCC Building with Soil Structure Interaction by Dynamic Loading

Multi story building are very much common in the urban area nowadays due to scarcity of land and increase in the cost of land. Most of the structure are not in regular either in shape and mass distribution. But the performance of structure will not be good as regular symmetric type structure. A plan asymmetric having L shaped normally exhibits a complex response under dynamic loads. In this research work, effect of change of height and change of number of bays are studied separately with soil structure interaction. In recent years, due to demand in aesthetical view and architectural design, people want unique in building so the building are designed with irregularities. Using software is used for modelling and studying the various parameter such as displacement, time period, frequency and acceleration

Design of the Nant Ffrwd mainline bridges with flexible integral frame abutments

As part of the A465 Head of the Valleys sections 5 and 6 project, two integral bridges with a maximum span of 70 m across the Nant Ffrwd valley were designed to support the new mainline carriageway construction. The topography and founding rock levels were such that abutment walls up to 19 m high were required. To provide significant material and carbon dioxide efficiencies, the abutments were designed to be slender with their flexibility accounted for in the design. For full-height integral frame abutments, UK guidance presents a limit equilibrium/simplified method to determine K* (enhanced horizontal earth pressure coefficient generated from strain ratcheting), where the values of earth pressures generated are based on the full height of the abutment and do not consider abutment flexibility. For slender abutments, this can be conservative for the design and unrealistic to the soil–structure interaction. Where the foundation is rigid and the abutment flexible, there will be parts of the abutment that will not deflect or rotate from expansion of the bridge deck and will thus not generate earth pressures that approach the limiting K* values. This paper discusses the design of the Nant Ffrwd bridges and the methods used to determine the magnitudes of earth pressures and their distribution based on the stiffnesses of the foundation and the structural elements.

Beneficial and detrimental impacts of soil-structure interaction on seismic response of high-rise buildings

In the traditional design method, structures are usually assumed as rigid base structures without considering soil-structure interaction (SSI). However, whether the effect of SSI on the seismic performance of structures is beneficial or detrimental is far from consensus among researchers. Moreover, previous literature mostly concentrated on the seismic behaviour of mid-rise buildings and moment-resisting frames. Therefore, it is in real need to comprehensively investigate the seismic response of tall buildings considering SSI. In this study, a soil-foundation-structure model developed in finite element software and verified by shaking table tests is used to critically explore the effects of SSI on high-rise buildings with a series of superstructure and substructure parameters. The beneficial and detrimental impacts of SSI are identified and discussed. Numerical simulation results indicate the rise in the stiffness of subsoil can dramatically amplify the base shear of structures. As the foundation rotation increases, inter-storey drifts are increased, and base shears are reduced. In general, SSI amplifies the inter-storey drifts showing detrimental effects of SSI. However, as for the base shear, SSI exerts detrimental effects on most piled foundation cases as well as classical compensated foundation structures resting on Ce soil, whereas, for compensated foundation structures resting on soil types De and Ee, effects of SSI are beneficial since the base shear is reduced. Moreover, regarding buildings with different structural systems and foundation types, minimum base shear ratios considering the SSI reduction effect are presented.

Numerical Validation of Fully Coupled Nonlinear Seismic Soil–Pile–Structure Interaction

While many researchers have broadly studied soil–structure interaction (SSI) problems to comprehend SSI effects on the overall system’s behavior, some critical numerical modeling issues have not been sufficiently investigated to achieve the most accurate results. Furthermore, most scholars have not provided detailed explanations of the validation process for their proposed numerical models. Modeling pile foundations in a three-dimensional (3D) continuum system in a fully coupled manner is often challenging for engineers who do not specialize in structural and geotechnical earthquake engineering, as it can be very time-consuming and complicated. Therefore, this work aims to validate a finite element model of seismic soil–pile–structure interaction (SPSI) problems in a continuum soil body by comparing the results of numerical models with those of a centrifuge test and computed numerical simulations available in the literature. In this regard, several newly developed elements in OpenSees (Version 3.6.0) are tested. The results of this work demonstrate a closer alignment with prior experimental research findings. It is believed that providing detailed numerical modeling and validation processes will assist researchers in better understanding crucial issues in modeling soil–pile–structure interaction problems.

Study of Structural Seismic Damage Considering Seasonal Frozen Soil–Structure Interaction

Frozen soil may cause structures to have different damage statuses, as revealed by earthquakes in northeastern China. ABAQUS (2019), a numerical simulation software application, was adopted to systematically and deeply study the structural seismic response, considering seasonal frozen soil–structure interaction under different ground motion intensities and soil ambient temperatures. The results showed firstly that the variation in soil ambient temperature had a great influence on the seismic response of the structure, as indicated by the damage status of the structure obtained through numerical simulation. Secondly, through further analysis of the numerical simulation results, the influence amplitude of different soil temperatures on the structural seismic response was quantitatively analyzed and systematically summarized. Finally, the structural seismic damage with negative ambient temperature could be significantly lower than that with positive temperature normally. Additionally, such an internal change mechanism was also objectively analyzed to verify the reliability of the conclusion.

Static and dynamic analysis of a new offshore wind turbine system supported with outriggers

This article presents an innovative structural system for offshore wind turbines supported on monopiles. The novelty of this system lies in its enhancement of the lateral stiffness of the tubular tower through the incorporation of an outrigger system, widely employed in high-rise buildings. This novel system is modeled as a Timoshenko beam-column element under both static and dynamic loading scenarios, incorporating geometric nonlinearity and accounting for the effect of soil-structure interaction. A comprehensive numerical analysis was conducted to evaluate the system’s behavior under various static and dynamic load cases, utilizing soil data from the Red Sea region of Egypt. A modal analysis is also incorporated to investigate the eigenmodes of the proposed system. This study offers valuable insights for designers and researchers, providing guidelines and diagrams for the implementation of the proposed system.

Shaking Tables Test on Seismic Responses of a Long-Span Rigid-Framed Bridge Considering Traveling Wave Effect and Soil–Structure Interaction

The traveling wave effect and soil–structure interaction have significant influence on the seismic response of large-span bridges with complex site conditions. In this paper, a 1/10 scaled-down large-span rigid-framed bridge model was designed and fabricated, and a shaking tables test considering the traveling wave effect and soil–structure interaction was carried out on a large-scale continuous rigid bridge model by a real-time substructure hybrid test technique. Influences of the traveling wave effect and soil–structure interaction on the seismic responses of the rigid-framed bridge specimen were systematically analyzed with experimental data. The test results showed that when the apparent wave speed was small, the traveling wave effect increased the seismic responses of the rigid-framed bridge. With the increase in apparent wave speed, the structural response under traveling wave excitation and uniform excitation was basically the same. The SSI effect lead to a great change in the seismic input peaks and spectral characters at the bottom of the pier, and increased the seismic responses of the rigid-framed bridge. When both traveling wave and the SSI effect were considered, there was a phase difference in the seismic excitation. The dynamic responses of a continuous rigid-framed bridge could not be simply obtained by superposition of the separate traveling wave effect or SSI effect. Meanwhile, the real-time substructure test method in this paper solved the problems that the traditional soil box experiment cannot be applied to the test of a large-scale model, the soil and bridge structure find it difficult to meet the unified similarity ratio, and the boundary conditions are difficult to simulate accurately.

Seismic analysis of a soil-liquid tank system using the two-step method

Seismic analysis of soil-structure interaction (SSI) is a challenge due to the non-linearities of soil-foundation interaction (SFI). The reliability of the design and the analysis results will suffer if SSI is ignored. In this paper, a two-step method based on the superposition theorem is used to perform a seismic analysis of a soil-foundation-tank-liquid system (soil-liquid tank system). The SFI analysis was conducted in the first step using the CyclicTP program's finite-element method. Meanwhile, the liquid tank system was analyzed in the second step using the lumped-parameter method. Numerical simulations conducted in homogeneous strata of sand soil demonstrated that the responses of the liquid tank were 24–70% higher than the results of the fixed-base model. Compared to the sway-rocking model, these responses did not differ by 20%. This study also investigated cohesive soils of homogeneous clays and multiple strata. The paper recommends that future research investigate the experimentation, the geometric nonlinearity of the soil-foundation system, and the stress-strain analysis of the tank wall