Dynamic soilstructure interaction analysis for complex soil profiles using. This paper deals with several numerical techniques accounting for random excitation and random parameters classically occurring in earthquake engineering. Dynamic structuresoilstructure interaction by fem and bem. Follow the links provided to stream and download media content. To investigate soil structure interaction, a series of dynamic experiments were performed on fullscale mat foundations han, 1989 and on fullscale piles han and novak, 1989, 1992. Inelastic soil structure interaction results in a variation of the structural response. Jan 12, 2014 the present study makes an attempt to investigate the soilstructure resonance effects on a structure based on dynamic soilstructure interaction ssi methodology by direct method configuration using 2d finite element method fem. Dynamic analysis of partially embedded structures considering. Soil structure interaction broadly can be divided into two phenomena. In the dynamic analyses of offshore wind turbines subjected to the external vibration sources, the wind turbines are normally assumed in the parked condition and the blades are considered by a lumped mass located at the top of the tower. Overview of soilstructure interaction principles jonathan p. In this case, numerical methods with highly developed computer technique become very efficient to analyze complex problems. In this study dynamic analysis of soil structure interaction ssi effect on multi story reinforced concrete rc frame founded on soft soil flexible base is made and compared with fixed base.
In this study, the effect of soil structure interaction on the dynamic response of structures has been examined. Soil structure interaction modelling for piles in performancebased seismic design. Dynamic soil structureinteraction geoslope international. Purchase dynamic soilstructure interaction, volume 83 1st edition. Based on decades of experience gained in research, consulting and teaching, the salient features and analysis methods of dynamic soil structure interaction are outlined. Numerical analysis of tall buildings considering dynamic soil. Highlights the model approach allows using inelastic behavior for soil and 2d structures. Dynamic interaction problems soil structure interaction,fluid structure interaction,tsunamis.
The problem addressed corresponds to a nonlinear soil deposit, overlaying firm ground, where the input motion was derived from an acceleration time history recorded at a. Soil structure interaction under static and dynamic loads, dynamic behavior of soils, and soil liquefaction. Winkler spring and half space direct method models are used for flexible base for the frames founded on two types of soft soils. It influences the behavior of soil, as well as the response of pile under loading. Dynamic soilstructure interaction civil engineering. The following information details specific capabilities of lusas for soil structure interaction modelling. Inelastic dynamic soilstructure interaction effects on. Soilstructure interaction for building structures national. Geologan geotechnical special publication by american society of civil engineers geoinstitute, geologan 9 1997 logan, utah and a great selection of related books, art and collectibles available now at. In a dynamic soilstructureinteraction analysis a bounded structure which may be linear or nonlinear, consisting of the actual structure and an adjacent irregular soil if present, will interact with the unbounded infinite or semiinfinite soil which is assumed to be linear elastic. If you continue browsing the site, you agree to the use of cookies on this website. In practice, the effects of soil structure interaction on the dynamic response of structures are usually neglected. The investigation has been focused on the numerical application for the four soil structure models particularly adjusted to. Soilstructure interaction broadly can be divided into two phenomena.
Overview of soil structure interaction principles jonathan p. The underlying soil, foundation, and superstructure of each of these buildings can interact and combine to yield unique seismic responses. Stated conversely, the presence of a stiff structure could possibly affect the response of the ground to earthquake shaking. A new numerical procedure is proposed for the analysis of three. The effects of soil structure interaction ssi are investigated through careful interpretation of available data from instrumented buildings and recently performed forced vibration experiments on instrumented buildings and test structures.
The purpose of this chapter is to illustrate whether and under which conditions ssi is important and what are its consequences on the dynamic response of the structure. Seismic analysis and design of steel and reinforced concrete structures, retaining walls, dams, slopes. Dynamic soilstructure interaction for highrise buildings. It studies in sequence the influence on the structural response of the variability of the. Observation and modeling in numerical analysis and model tests in dynamic soil structure interaction problems. Accordingly, this paper presents a soilstructure interaction analysis method considering the characteristics of the. Dynamic soilstructure interaction for sdof structures on footings and piles.
Dynamic soilstructure interaction of instrumented buildings. On the resonance effect by dynamic soilstructure interaction. This interaction between the structure and the soil is named soilstructure interaction ssi. Dynamic analysis of soil structure interaction effect on. The dynamic response of a structure placed on a deformable soil medium subjected to seismic excitation is studied. The analysis considers both the steadystate and transient vibrations of beams under both oscillatory and moving loads. The paper presents superstructurefoundationsoil 3d dynamic interaction equations and corresponding program with substructure method.
The numerically computed pnfs were then compared with those from the experiments in this study and a documented field test. The constitutive behavior of the interface is defined by decomposing it into its normal and shear components. Mtrsassi software is a substructuring program that uses the complex frequency response method and finite element technique to solve a wide range of dynamic soil structure interaction problems. Nanjing institute of architectural engineering, 1984 m. Viscous boundary of soil is implemented in ansys program. Pdf dynamic soilstructure interaction analysis by continuum.
All facilities are based on the trusted and proven general capability of the lusas finite element system. Analysis and design of structures subjected to arbitrary dynamic loadings especially earthquakes have been studied during past decades. Pdf dynamic analysis of soil structure interaction effect. Estimation of natural frequency and damping factor for dynamic soil structure interaction systems f. Dynamic soil structure interaction dssi as a topic of research has been under focus for last 40 years or more. Soil dynamics and soilstructure interaction for resilient. Soil dynamics and earthquake engineering journal elsevier. Commonly used equivalent linearity model is chosen as constitutive relation of soil. The partial differential equation governing the motion is. Accordance among 2d building model and planestrain approach for the soil is ensured. The soil structure interaction was formulated using the winkler model, which only considers the modulus of subgrade reaction for soils, and the pasternak model, which considers the shear interaction in addition to the modulus.
Earthquake ground motion causes soil displacement known as freefield. Soilstructure interaction ssi analysis evaluates the collective response of three. Observation and modeling in numerical analysis and model tests in dynamic soilstructure interaction problems. The structures are discretized by finite elements, and the infinite soil is represented by boundary elements. Soilstructure interaction plays an important role in the behavior of structure under static or dynamic loading. It discusses case studies as well as physical and numerical models of geostructures. Essentials of soil mechanics and foundations basic geotechnics seventh edition david f. The paper investigates directionality effects of ground motions in the context of dynamic soil structure interaction dssi analyses. Title slide of dynamic soil structure interaction,by wolf slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Dynamic soilstructure interaction, volume 83 1st edition elsevier. Soil structure dynamic interaction by means of fem bowles, 1996 allows for a complete model of both the superstructure, the foundation system and the sur. This numerical method is a powerful numerical technique suited for the dynamic tasks. Dynamic soil structure interaction model for beams on.
Two model 2d rc frames with 7 and 12 story are selected for analysis. As discussed previously, the nonlinear soil structure interaction with the pile foundation is calculated by a numerous iterations to form the. Dynamic soil structure interaction analysis for complex soil profiles using. Dynamic soil structure interaction tech books yard. For the last couple of decades it has been recognized that the foundation material on which a structure is constructed may interact dynamically with the structure. We use your linkedin profile and activity data to personalize ads and to show you more relevant ads. The importance of performance based design approaches and soil structure interaction in seismic design of structures are internationally recognized.
It is hoped that this volume will contribute to further. This paper shows the impact of adopting different ssi models on the assessment of seismic fragility functions. The program has been developed specifically for practical applications and has the following characteristics. The present study makes an attempt to investigate the soilstructure resonance effects on a structure based on dynamic soilstructure interaction ssi methodology by direct method configuration using 2d finite element method fem. Dynamic soilstructure interaction models for fragility. Effect of moving loads on bridges and pavements and vibration isolation in geotechnical structures. Dynamic soilstructure interaction civil engineering community. Apr 20, 2016 dynamic soil structure interaction ppt, engineering, semester civil engineering ce notes edurev notes for civil engineering ce is made by best teachers who have written some of the best books of civil engineering ce. Soil structure interactions an overview sciencedirect. Pdf dynamic soilstructure interaction analysis for complex soil. The present study makes an attempt to investigate the soil structure resonance effects on a structure based on dynamic soil structure interaction ssi methodology by direct method configuration using 2d finite element method fem.
The response of partially or fully buried structures or infrastructure is influenced by interaction with the surrounding soil. The effects of soilstructure interaction ssi are investigated through careful interpretation of available data from instrumented buildings and recently performed forced vibration experiments on instrumented buildings and test structures. Dynamic soilstructure interaction analysis by continuum formulation method. If verified, these results could lead to site and foundationspecific test methods for evaluating kinematic interaction effects. Dynamic analysis of soil structure interaction by the. Effect of soilstructure interaction on seismic performance. Nonlinear modeling of dynamic soilstructure interaction.
Jan 16, 20 dynamic soil structure interaction is one of the major topics in earthquake engineering and soil dynamics since it is closely related to the safety evaluation of many important engineering projects, such as nuclear power plants, to resist earthquakes. Time computation reduction in an inelastic dynamic soilstructure interaction problem. In this study, the soil is modelled as a linear elastic solid, however, the methods developed can be adapted to include the effects of soil non. When a structure is subjected to an earthquake excitation, it interacts with the foundation and the soil, and thus changes the motion of the ground. Dynamic soilstructure interaction of instrumented buildings and. Dynamic soilstructure interaction for sdof structures on footings and piles conference paper pdf available in geotechnical special publication may 2008 with 1,608 reads how we measure reads. Dynamic soilstructure interaction, volume 83 1st edition. Pdf effect of dynamic soilstructure interaction on the. Since the seminal work of researchers such as luco and contesse 1973 and wong and trifunac 1975, researchers have investigated the effects of soil structure interaction ssi. Author links open overlay panel roberto luque a jonathan d.
Dynamic analyses of operating offshore wind turbines. Developments in dynamic soilstructure interaction polat gulkan. The analysis considers both the steadystate and transient vibrations of. This interaction between the structure and the soil is named soil structure interaction ssi. As discussed previously, the nonlinear soil structure interaction with the pile foundation is calculated by a numerous iterations to form the pile stiffness matrix when working out mode shapes. Dynamic soil structure interaction evaluation summary and conclusions use of advanced computer program for dynamic ssi problem in the industry is limited simplified approaches, supported by complex analyses, provide reasonable solutions to dynamic ssi problems collaboration between geotechnical and. This volume focuses on the role of soil structure interaction and soil dynamics. Dynamic soil structure interaction is one of the major topics in earthquake engineering and soil dynamics since it is closely related to the safety evaluation of many important engineering projects, such as nuclear power plants, to resist earthqua. The influence of soil structure interaction ssi on the responses of an isolated bridge structure, subjected to seismic excitation, is investigated. Dynamic soil structure interaction ppt, engineering. Soilstructure interaction modelling for piles in performance. Some cornerstones of dynamic soilstructure interaction.
Dynamic analyses of operating offshore wind turbines including soilstructure interaction article in engineering structures 157. Dynamic soil structure interaction analyses of two important structures affected by liquefaction during the canterbury earthquake sequence. Pdf dynamic analysis of soil structure interaction. Approach sgh performs a broad range of services in soil structure interaction ssi analysis and wave propagation for the calculation of responses of structures. Plot of dynamic stiffness modifiers and damping ratios versus dimensionless. The analysis is highly essential for predicting a more accurate structural behavior so as to improve the safety of structures under extreme loading conditions. The computational method has been applied to important engineering practice han, 1987, and han, et al, 1999. Dynamic soilstructure interaction with three case studies. Mtrsassi software is a substructuring program that uses the complex frequency response method and finite element technique to solve a wide range of dynamic soilstructure interaction problems. Evaluation of winkler model and pasternak model for.
View dynamic soil structure interaction research papers on academia. Sgh performs soil structure interaction ssi analyses to evaluate the true responses of these systems. Dynamic soilstructure interaction is one of the major topics in earthquake engineering and soil dynamics since it is closely related to the safety evaluation of many important engineering projects, such as nuclear power plants, to resist earthquakes. The study considers the laminated rubber bearing and the lead rubber bearing for the seismic. Jan 22, 2014 title slide of dynamic soil structure interaction,by wolf. Pile foundations and retaining structures by guoxi wu b. Dynamic soil structure interaction of monopile supported wind turbines in cohesive soil. The influences of parameters, such as soil property, excitation, the rigidity of structure and buried depth, on dynamic characteristics, seismic response and interaction effect of ssi system are discussed. This paper describes the dynamic analysis of soil structure interaction by using the spectral element method sem. Dynamic soil structure interaction is one of the major topics in earthquake engineering and soil dynamics since it is closely related to the safety evaluation of many important engineering projects, such as nuclear power plants, to resist earthquakes. However, despite its significant development, it has hardly impacted the practice. Pdf dynamic soil structure interaction of structures. Applications of infinite elements to dynamic soilstructure interaction problems.
The dynamic interaction, through the underlying or surrounding soil, between. Developments in geotechnical engineering dynamic soilstructure. Modeling uncertainties are associated with the differences between the real world phenomenon and the model, and parameter uncertainties are uncertainties in the parameters which appear in the model definition. Pdf dynamic soilstructure interaction for sdof structures.
Soil structure interface effects on dynamic interaction analysis of reinforced concrete lifelines y. Numerical modeling of dynamic soil pile structure interaction by surendran balendra a thesis submitted in partial fulfillment of the requirements for the degree of master of science in civil engineering washington state university department of civil and environmental engineering december 2005. The investigation has been focused on the numerical application for the four soilstructure models particularly adjusted to be in resonance. This tendency of disregarding the influence of the soil is further increased as, for many standard structures, seismic soil structure interaction can be neglected. Dynamic soil structure interaction ssi, involving the coupling of structure, foundation and soil, is a crucial and challenging problem, especially when soil nonlinearity plays an important role. The university of british columbia, canada, 1992 a thesis submitted in partial fulfillment of therequirements for degree of doctor of. Pdf on jan 1, 2018, hailu getachew kabtamu and others published dynamic analysis of soil structure interaction effect on multi story rc frame find, read and cite all the research you need on.
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