Soil structure interaction analysis in time domain prentice hall international series in civil engineering and engineering mechanics. Groundstructure interaction ssi consists of the interaction between soil ground and a structure built upon it. The report further illustrate the resonance vibration of building and variation in nature of design. In that model, the layered soil medium is divided into thin layers and each thin layer is represented by a parametric model. Dynamic soil structureinteraction geoslope international. Kramer, geotechnical earthquake engineering john p. Overview of soil structure interaction principles jonathan p. This interaction between the structure and the soil is named soil structure interaction ssi. Soil structure interaction is a complex phenomenon where the boundary between soil and bridge may be modelled as springs with the same stiffness as the soil. One problem with modelling a soil structure interaction using a full feanalysis of the soil is that it requires a large amount of computational e ort along with a signi cant e ort in building the models, and a rather deep understanding of soil modelling. Inertial soil structure interaction inertia from vibration of structure and foundation causes foundation translation and rotation u f and. P soilstructureinteraction analysis in time domain. Technical paper soilstructure institution of civil.
Soil structure interaction ssi knowledge and effect on the seismic assessment of npps structures and components ssi analysis procedure seismic soil structure interaction ssi analysis of nuclear power plants npps in the united states is often performed in the frequency domain using sassi. Based on several documents, a systematic summary of the history and status of the structuresoilstructure dynamic interaction research that considers adjacent structures was proposed as a reference for researchers. Probabilistic analysis of offshore wind turbine soil. Candidate, department of civil and environmental engineering, boelter hall 6689, university. Dynamic soil structure interaction geoslope international. Also, the soilstructure interaction ssi problem has become an. Soilstructureinteraction analysis in time domain john. Generally duncan and dorazio 1984 methods result in. Soilstructure interaction research papers academia.
Ammar motorwala modelling soil structure interaction for nonlinear dynamic analysis of framed structures with pile foundation 1 p a g e modelling soil structure interaction for nonlinear dynamic analysis of framed structures with pile foundation an earthquake is a phenomenon which basically takes place to dissipate the strain energy accumulated over time at. The soilstructure interaction is illustrated by a simple analysis following the approach of wolf. Soilstructureinteraction analysis in time domain prentice. The aim of this paper is to highlight the soil structure interaction with a linear variation of the mechanical properties of the soil with the depth. Importance of soil structure interaction for framed. Effect of soil structure interaction in seismic loads. Many studies have asses numerically the soil structure phenomena. However, the soil structure interaction effects need to be considered for bridges constructed in soft soil conditions. Even the seismicdesign provisions applicable to everyday building structures permit a significant reduction of the equivalent static lateral load compared to that applicable for the fixedbase structure. Stated conversely, the presence of a stiff structure could possibly affect the response of the ground to earthquake shaking. The time histories were developed so that they provided. One modeling feature useful to soilstructure interaction is the gap compressiononly link object, which enables foundation uplift without the development of tensile forces. Methods of analysis two general methods of analysis were developed and used for seismic analyses including soilstructure in teraction. Why is the proper enveloped value not recognized in the table.
View soilstructure interaction research papers on academia. Full modeling of soil, foundation, structure propagate waves through system. Consequently, the motion occurring at the base of the structure is different compared to the freefield motion motion in the absence of the structure. A numerical approach to the dynamic unilateral contact problem of. Other readers will always be interested in your opinion of the books youve read. 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. 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. Furthermore, according to fema 2000 the effects of soil structure interaction must be evaluated for nearfield and soft soil sites and also for buildings in. Neglecting ssi is reasonable for light structures in relatively stiff soil such as low rise buildings and simple rigid retaining walls. Development of nonlinear ssi time domain methodology. Inertial interaction springs used to represent soil foundation interaction complexvalued real part. The objective of this study is to perform a rigorous seismic nonlinear soil structure interaction analysis in the time domain to satisfy the above re. This interaction between the structure and the soil is named soilstructure interaction ssi. We use your linkedin profile and activity data to personalize ads and to show you more relevant ads.
Dynamic soil structure interaction,by wolf slideshare. A simple soilstructure interaction model sciencedirect. All facilities are based on the trusted and proven general capability of the lusas finite element system. It is very important to note that the structural response is mainly due to the soilstructure interaction forces that brings an impact on the structure. The kern county earthquake is used because of its long duration and response over a wide period range. For the structure founded on the soil, the motion of the base of the structure will be different from the case of fixed base 7, because of the coupling of the structure soil system. First, a model is developed for a layered soil medium. This is especially applicable to areas of seismic activity. Based on several documents, a systematic summary of the history and status of the soil structure interaction research that considers adjacent structures was proposed as a reference for researchers. Influence of the soilstructure interaction in the behavior. Effects of soilstructure interaction on the seismic response of base isolated in highrise buildings abstractin this paper, a real 10story base isolated structure, designed according to ibc, 2009 guidelines, is selected as a case study. Improved understanding of liquefaction effects on shallow.
The contribution of the unbounded soil involves convolution integrals of the dynamic. Dynamic analysis of soil structure interaction effect on. The concept of structure soil structure dynamic interaction was introduced, and the research methods were discussed. Request pdf importance of soil structure interaction for framed structure soilstructure interaction is interdisciplinary field which involves structural and geotechnical engineering. To establish a firm base for the classification of the methods, the objective and the significant features of soil structure interaction analysis described in the two text books 33, 38 are summarized in the following. Soilstructure interaction technical knowledge base. Reporting why is the governing soil pressure not shown in the output table. Soilstructureinteraction analysis in time domain john p. Pdf early history of soilstructure interaction naveen. Soil structure interaction for deep foundations, excavations and tunnels, simons. Dynamic soilstructure interaction, wolf free ebook download as pdf file. A simple and rational method for the design of metal culverts, the soil culvert interaction method, is described and compared to currently used design procedures.
This article focuses on the study of the behavior of a soil mass under a plate subjected to a uniformly distributed load. Structuresoilstructure interaction analysis in a highly. The research work on the seismic soil structure interaction in the time domain was carried out at the department of civil engineering, university of canterbury. Nonlinear seismic soilstructure interaction analysis based. Soil structure interaction is an interdisciplinary field of endeavor which lies at the intersection of soil and structural mechanics, soil and structural dynamics, earthquake engineering, geophysics and geomechanics, material science, computational. Earthquake wavesoilstructure interaction analysis of tall. 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. Edinburgh, scotland dynamic soilstructure interaction in.
Taft records of the 1952 kern county earthquake were selected as the initial seed time histories figure 3. View soil structure interaction research papers on academia. Both studies are performed using the finite element program lsdyna. Present the need for nonlinear soil structure interaction nlssi analysis discuss development of a nonlinear seismic soil structure interaction nlssi methodology discuss future nlssi development needs. Recent developments in the finite element method made by wolf 7, have. A simple threedimensional soilstructure interaction ssi model is proposed. 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.
Soil structure interaction amec presentationfinal 1. A major part of the work presented here concerns the response of a body of saturated sand to a series of ramped harmonic loadings, all with an amplitude of 0. Soil dynamics and machine foundations, swami saran. Title slide of dynamic soil structure interaction,by wolf. The basic equation of motion to analyse the interaction of a non. Kk 2007 fukushima 2011 north anna 2011 design value g. Missouri university of science and technology scholars mine. Conventional structural design methods neglect the ssi effects. Table 1 geometries and material properties of the bridge p. The earthquake wave soil structure interaction analysis of tall buildings is the main focus of this research. Structural models in which nonlinear soilstructure interaction analysis in the time do ssi. Seismic soilstructure interaction in the time domain.
Dynamic soilstructure interaction, volume 83 1st edition elsevier. Wolf 6 or bielak 7, all introduce the analogy of a. As discussed previously, the nonlinear soil structure interaction with the pile foundation is calculated by a numerous iterations to form the. In all these pioneering works, some simplifying assumptions were. To evaluate the abovementioned effects, a series of experiments are reported in this article. Soil structure interaction analysis in time domain prentice hall international series in civil engineering and engineering mechanics wolf, john p. Pdf neglecting soil structure interaction is reasonable for light structures on relatively stiff.
Effects of soilstructure interaction on nonlinear response of arch dams c. Based on several documents, a systematic summary of the history and status of the soil. Soil structure interaction and seismic design code provision even though the soil has good engineering characteristics 3. This work focuses on proving the importance of soil structure interaction for frame structure and computational modeling of ground structure interaction using finite element package ansys11. Among many other aspects soil structure interaction is a very important aspect to be taken into account in the dynamic modelling of those structures. The hyperlinks below, present the concepts and techniques associated with modeling soilstructure interaction. Effects of soilstructure interaction on the seismic response. A system for analysis of soilstructure interaction. Mass and geometry determine the inertial terms in the dynamics equations. It is primarily an exchange of mutual stress, whereby the movement of the ground structure system is influenced by both the type of ground and the type of structure.
Soil structure interaction characteristics depend on several factors. 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 av c zhang, john p wolf. If you continue browsing the site, you agree to the use of cookies on this website.
Overview of soilstructure interaction principles jonathan p. Fema 2000 implies that soil structure interaction may modify the seismic demand on a building. Iaea tecdoc on seismic soil structure interaction for. Developments in dynamic soil structure interaction. Soilstructure interaction effects on seismic behaviour of. The concept of soil structure interaction was introduced, and the research methods were discussed. Determination of structure soil structure interaction sssi effects, if any between large and more massive process building pb and exhaust fan building efb. Determination of soil structure interaction effects for a model test structure using parametric system identification procedures salih tileylioglu 1, robert l. Dynamic soil structure interaction ppt, engineering. Structure, soilstructure response and effects of damage. In addition, the general applicability of lsdyna for this type of study is assessed by comparing the dynamic.
Pdf seismic response analysis considering soilstructure. The effect of soilstructure interaction is recognized to be important and cannot, in general, be neglected. Recursive evaluation of interaction forces of unbounded soil in frequency domain s. Soil structure interaction analysis in time domain. Although energy dissipators may be installed, damping is not usually considered as a design variable but rather as a factor in the analysis resulting from other design variables. Review and cite soil structure interaction protocol, troubleshooting and other methodology. Influence of soilstructure interaction on response of a. Follow the links provided to stream and download media content.
Seismic soil structure interaction for design and assessment of nuclear installations. Recent advances in seismic soilstructure interaction. The effect of soil structure interaction is recognized to be important and cannot, in general, be neglected. Dynamic soilstructure interaction with three case studies. This work throws light on the role of soil structure interaction in earthquake response, which is often ignored in usual design practice. Analysis of jointless bridges due to horizontal actions and. Various combinations of soil and structure can either. There are two methods available for modeling the soil structure interaction ssi. Soil pressures enveloping summary, the minimum soil pressure is presented as one value, whereas a more extreme value is presented when soil reaction forces are graphically displayed.
In a seismic soil structure interaction analysis, it is necessary to consider the in nite and layer characteristics of soil strata, and the nonlinear behaviors of soft soil. Soil structure interaction and seismic design code provision. Importance of soil structure interaction for framed structure. The dissertation studies a method of fe modelling of the deformations and section forces, and also the extent of the soil structure interaction, by. More rigorous finite element methods can be used to more accurately evaluate tank stability. In dealing with the analysis of dynamic soil structure interactions, one of the most difficult tasks is the modeling of unbounded media. The following information details specific capabilities of lusas for soil structure interaction modelling. Estimation of natural frequency and damping factor for dynamic soil structure interaction systems f. Dynamic soilstructure interaction, volume 83 1st edition.
Based on the analysis results, it has been concluded that the effect of soil structure interaction plays a significant role to increase the time period, bending moment in xx direction, bending. Based on several documents, a systematic summary of the history and status of the structure soil structure dynamic interaction research that considers adjacent structures was proposed as a reference for researchers. The concept of structuresoilstructure dynamic interaction was introduced, and the research methods were discussed. Csi software models soilstructure interaction using a oneparameter winkler soil model. Soil structure interaction under dynamic loads, vibration of machine foundations, and base isolation in earthquake engineering. Wolf, 1985, dynamic soil structure interaction steven l. The mutual dependency of the displacements is called soil structure interaction, abbreviated as ssi. Modeling of dynamic soil structure interaction in the threedimensional finite element analysis of buildings horst werkle1 and jadranko volarevic2 abstract in the earthquake analysis of threedimensional finite element models of buildings consisting of shell elements, soil structure interaction may significantly influence the structural response. With its companion volumes, it is hoped that it will contribute to the further development of techniques, methods and innovative approaches in soil dynamics and earthquake engineering. Whether youve loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them.
Soil structure interactions an overview sciencedirect. Geotechnical design considerations of ground storage tanks. Effect of soilstructure interaction on seismic response. The study of soilstructure interaction ssi is related to the field of earthquake engineering. Results of the sssi analysis were compared with those from soil structure interaction ssi analysis of the individual buildings, for the following parameters. Effect of soil structure interaction in seismic loads of. A system for analysis of soilstructure interaction university of california, berkeley. The soil structure interaction is illustrated by a simple analysis following the approach of wolf.