Soilstructureinteraction analysis in time domain prenticehall international series in civil. Dynamic wavesoilstructure interaction analysis in the. The behavior of soil is predicted based on the engineering properties of soil, vertical soil profile and the alignment of ground surface. Soilstructureinteraction analysis in time domain john. Modeled is not only the lateral energy dissipation, but also the interaction between the far field and the numerical model itself. The procedures to perform nonlinear soilstructureinteraction analysis in the time domain are summarized. On soilstructure interaction analysis of concrete gravity.
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. Analysis time function of interaction nodes inefficient specially when. Evaluation of the frequency and time domain soilstructure. This may be useful when performing analyses for beyond design basis events see chapter 1.
Development and deployment of analysis methodologies suitable for computing the response of deeplyembedded power reactors, including nonlinear time domain, soilstructureinteraction analysis 3. Soilstructureinteraction analysis in time domain prentice hall international series in civil engineering and engineering mechanics. The temporal global coupling of the interaction forcedisplacement relationship. Soilstructure interaction is an area of major importance in geotechnical engineering and geomechanics advanced geotechnical engineering. For time history analyses the modelling of soil by the sbfem in time domain is straightforward figure 3a.
There are two methods available for modeling the soil structure interaction ssi. In soilstructure interaction analysis the distribution of load from the structure to the soil is investigated. Read soilstructure interaction in the time domain using halfspace greens functions, soil dynamics and earthquake engineering on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. A time domain analysis procedure and method for seismic soilstructure interaction analysis are introduced in this work. Besides the direct method where local frequencyindependent boundary conditions are enforced on the artificial boundary. One modeling feature useful to soil structure interaction is the gap compressiononly link object, which enables foundation uplift without the development of tensile forces. This includes the selection of the soil model, the far field model, the structural model and the soilstructure interaction analysis method. Analysis of i f must consider shear wall configuration and potential rotational coupling between walls 2. Soilstructure interaction c zace services ltd august 2011 160 260. This paper addresses the time history finite element analysis of rock structure interaction. The paper presents a novel approach for performing soil structure interaction ssi analysis. Soilstructure interface effects on dynamic interaction analysis of reinforced concrete lifelines y.
Demonstration of time domain 2d model demonstration of the explicit time domain capabilities using a 2d model of the calcine disposition project cdp process in the existing iwtu cells this demonstrates the modeling capabilities of explicit time domain codes to model contact and allow waves to travel through soil and structure during. Maugeri department of civil and en vironmen tal engineering, university of catania, italy abstract the present paper deals with a parametric study of soilfoundationframe interaction in pseudostatic conditions by means of a new finite element code, named sofia. Effect of interactions on dynamic active earth pressures m. Soil structure interaction and seismic design code provision even though the soil has good engineering characteristics 3. This paper addresses the time history finite element analysis of rockstructure interaction. Mar 20, 2020 soilstructure interaction civil engineering ce notes edurev is made by best teachers of civil engineering ce.
Presented methodology relies on rational mechanics and aims to reduce. Constitutive law for visco elastic body in the present analysis, saturated soil mass is considered in a drained situation and is idealized as a kelvin body fig. Soilstructureinteraction ssi effects are typically nonnegligible for structures that possess one or more of the following attributes. The study of the state and transport of all form of matter and energy in soils j why study soil physics atmosphere root zone soil.
Seismic soilstructure interaction in the time domain university of. 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. Nuclear engineering and design 111 1989 3893 northholland, amsterdam soilstructureinteraction analysis in time domain john p. Structuresoilstructure interaction analysis in a highly. Seismic safety margins research program responsibility prepared by j. Introduction in a dynamic soil structure interaction problem, the structure is supported by an unbounded.
Time domain simulation of soilfoundationstructure interaction in nonuniform soils boris jeremi. Comparative study of timedomain versus frequency domain. It has been believed that the nonlinear hysteretic models can be handled only in the time domain using stepbystep approaches, so that at each time step the dynamic system stiffness can be updated based on the stressdependent. Soilstructure interaction response to high amplitude forced vibration d. Introduction in a dynamic soilstructure interaction problem, the structure is supported by an unbounded. Missouri university of science and technology scholars mine. On the implementation and applications of discretetime. A variety of threedimensional models in different canyons are analyzed. Abstract a new numerical procedure is proposed for the analysis of three. The former needs high computational cost while the latter ignores the nonlinear effect of dynamic interaction between soil and structure. Soil structure interaction and seismic design code provision. Maugeri department of civil and en vironmen tal engineering, university of catania, italy abstract the present paper deals with a parametric study of soil foundationframe interaction in pseudostatic conditions by means of a new finite element code, named sofia.
Seismic soilstructure interaction ssi analysis of nuclear power plants. Department of civil and environmental engineering stanford university a methodology for nonlinear soil structure interaction effects using time domain analysis techniques. Soil structure interaction ssi effects are typically nonnegligible for structures that possess one or more of the following attributes. S presentation outline purpose of presentation linear versus nonlinear seismic ssi nonlinear seismic soil structure interaction nlssi studies the nlssi introduction nonlinearity in seismic ssi analysis commercial software elements commercial software nonlinear constitutive models nonlinear seismic ssi damping demonstration of time domain 2d model. Soilstructure interaction modelling for piles in performancebased seismic design. Threedimensional efficient analysis of soilstructure interaction in. To establish a firm base for the classification of the methods, the objective and the significant features of soilstructureinteraction analysis described in the. 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. Examples are given to demonstrate the feasibility of this method.
The bounding surface plasticity model is implemented to model the near field. Nonlinear seismic soil structure interaction ssi analyses are often completed using the equivalent linear frequency domain analysis method as it is simple to use and computationally efficient. Soilstructureinteraction analysis in time domain nuclear. In fact, the soil structure interaction can have a.
The projects ultimate objective is to offer practicing engineers a robust, reliable option for accounting for inertial soilstructure interaction in time domain analyses. Threedimensional efficient analysis of soilstructure interaction in time domain. Soilstructure interaction civil engineering ce notes. The projects ultimate objective is to offer practicing engineers a robust, reliable option for accounting for inertial soil structure interaction in time domain analyses. Box 8022, zurich, switzerland received 6 october 1987 381 the procedures to perform nonlinear soil structure interaction analysis in the time domain are summarized. The coupling between the buildings height, hysteretic damping ratio. The effect of soilstructure interaction ssi is an important consideration and cannot be neglected. The earthquake wave soil structure interaction analysis of tall buildings is the main focus of this research. In this load transfer mechanism, the characteristics of soil has very important role. This interaction is termed structuresoilstructure interaction sssi, which can be important for the performance assessment of buildings, especially those constructed in dense, urban areas. Linear material properties for soil and structure tied soil structure interface behavior applicable to small range of seismic hazard. Efficient timedomain deconvolution of seismic ground. Csi software models soilstructure interaction using a oneparameter winkler soil model.
Earthquake wavesoilstructure interaction analysis of tall buildings by ming ming yao b. Survey and classification of computational approaches in soil. Jun 23, 2016 in soilstructure interaction analysis the distribution of load from the structure to the soil is investigated. Modelling of ssi method of analysis soil structure interaction frequency dependent impedance functions constant impedance functions mod. Earthquake ground motion causes soil displacement known as freefield. This conservative simplification is valid for certain class of structure and soil conditions, such as light structures in relatively stiff soil. Request pdf timedomain soilstructure interaction analysis for nuclear facilities seismic analysis of nuclear power plants is routinely carried out using. Time domain earthquake response analysis method for 2d. Soil structure interaction broadly can be divided into two phenomena. This thesis is devoted to develop a coupled finitediscrete element framework for soilstructure interaction analysis and validate the developed algorithm by comparing numerical simulations with experimental data. Soilstructureinteraction analysis in time domain prentice. A frequency domain analysis approach is used for conducting soilstructure interaction analysis of concrete gravity dams rigorously 1. This thesis is devoted to develop a coupled finitediscrete element framework for soil structure interaction analysis and validate the developed algorithm by comparing numerical simulations with experimental data.
The importance of performance based design approaches and soil structure interaction in seismic design of structures are internationally recognized. Unfortunately, the assumptions does not always hold true. 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. The objective of this study is to perform a rigorous seismic nonlinear soilstructure interaction analysis in the time domain to satisfy the above re.
Numerical analysis of nonlinear soilstructure interaction m. However, the method is inherently linear and a better strategy is to employ the nonlinear time domain analysis method, which is computer intensive but. Nonlinear seismic soilstructure interaction ssi analyses are often completed using the equivalent linear frequency domain analysis method as it is simple to use and computationally efficient. Soil structure interaction analysis in time domain wolf, j hall. Timedomain soilstructure interaction analysis of nuclear. The hyperlinks below, present the concepts and techniques associated with modeling soil structure interaction. Nonlinear seismic soilstructure interaction analysis. Soilstructure interaction modelling for piles in performance. Constitutive aspects g current secant shear modulus.
Somainiapproximate dynamic model of embedded foundation in time. Appendix b nonlinear time domain soil structure interaction. Time domain earthquake response analysis method for 2d soil structure interaction systems719 and the far field soil region is represented using horizontal, vertical and left and right corner infinite elements yun et al. The primary objectives of this paper are to 1 present a methodology for performing nonlinear ssi nlssi analysis in the time domain, 2 introduce guidance provided in appendix b of the forthcoming edition of asce standard 4, 3 discuss the circumstances for which nonlinear seismic soil structure interaction ssi analysis may be necessary. This document is highly rated by civil engineering ce students and has been viewed 969 times. Time domain earthquake response analysis method for 2d soil. Site response analysis of soil layers to the interaction. The results of equivalentlinear frequency domain analysis and nonlinear timedomain analysis begin to diverge significantly for cases where a soil strains are. Application of 3d time domain method for seismic soilstructure.
A computer program is prepared to analyze the soil structure system. This paper proposes a direct threedimensional 3d numerical method in time domain for seismic soilstructure interaction ssi analysis of spatial grid structure. Soilstructure interaction broadly can be divided into two phenomena. Dynamic analysis of partially embedded structures considering.
A timedomain substructuring method for dynamic soil. Home soil structure interaction analysis in time domain. Soil structure interaction analysis methods state of art. The nonlinearity is restricted to the structure and possibly an adjacent irregular soil region. Soilstructure interaction using computer and material models covers computer and analytical methods for a number of geotechnical problems. Nuclear engineering and design 111 1989 3893 northholland, amsterdam soil structure interaction analysis in time domain john p. Three dimensional efficient analysis of soilstructure interaction in time domain. A simplified 3d model for soilstructure interaction with. 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. Soil structure interaction analysis in time domain prentice hall international series in civil engineering and engineering mechanics wolf, john p. Timedomain soilstructure interaction analysis for nuclear.
The unbounded soil far field must remain linear in this formulation. Pdf site response, soilstructure interaction and structuresoil. Examples of soil structure interaction sheetpile walls prestressed anchors diapraghm walls nailing foundation rafts with piles buildingfoundation in all the above problems strong displacementpressure discontinuity may appear. Dynamic analysis of partially embedded structures considering soilstructure interaction in time domain. Earthquake wavesoilstructure interaction analysis of. Estimation of natural frequency and damping factor for dynamic soil structure interaction systems f. Freedman and keer 1972 studied the response of a body resting on the surface of a transversely isotropic halfplane and presented exact solutions in terms of dual integral equations. Nonlinear seismic soilstructure interaction analysis based. The aim of this paper is perform an numerical dynamic soilstructure interaction analysis in time domain by using the computer program enlas, which is. A new interactive computer code is presented in this paper for dynamic and soilstructure interaction ssi analyses. A computer program is prepared to analyze the soilstructure system. Analysis of soilstructure interaction considering complicated soil. Npps in the united states is often performed in the frequency domain using sassi. The report further illustrate the resonance vibration of building and variation in nature of design.
Soilstructure interaction in the time domain sciencedirect. A nuclear containment structure, subjected to ground input motion is analyzed using time domain. Interactive computer code for dynamic and soil structure. Numerical analysis of nonlinear soilstructure interaction. It introduces the main factors important to the application of.
The program has been developed specifically for practical applications and has the following characteristics. Seismic soilstructure interaction in the time domain. Prestress can be controlled in time 560 sheetpile wall. Recursive evaluation of interaction forces of unbounded soil in frequency domain s. Soilstructure interaction technical knowledge base. Soil physics soil texture soil surface area soil structure volume and mass relationships water content measurements units soil physics. A time domain analysis procedure and method for seismic soil structure interaction analysis are introduced in this work. A frequency domain analysis approach is used for conducting soil structure interaction analysis of concrete gravity dams rigorously 1. Department of civil and environmental engineering stanford university a methodology for nonlinear soilstructure interaction effects using timedomain analysis techniques by ronaldo i. Soilstructureinteraction analysis in time domain sciencedirect.
Modelling of ssi method of analysis soilstructure interaction frequency dependent impedance functions constant impedance functions mod. A variety of threedimensional models in different canyons are analyzed and the frequency response functions are obtained. The procedures to perform nonlinear soil structure interaction analysis in the time domain are summarized. Recent advances in seismic soilstructure interaction analysis of. Soil structure interaction modelling for piles in performancebased seismic design. Nonlinear time domain analysis involves nonlinearities in the materials andor geometry such as loss of contact between soil and structure, and inelastic action in soil and structure. In a seismic soilstructure interaction analysis, it is necessary to consider the in nite and layer characteristics of soil strata, and the nonlinear behaviors of soft soil. The substructure method is a means of accounting for the interaction between a structure, its foundation, and the surrounding geology when subjected to dynamic excitation. Soilstructureinteraction analysis in time domain prentice hall international series in civil engineering and engineering mechanics wolf, john p. This includes the selection of the soil model, the far field model, the structural model and the soil structure interaction analysis method. Time domain earthquake response analysis method for 2d soilstructure interaction systems719 and the far field soil region is represented using horizontal, vertical and left and right corner infinite elements yun et al.
Soilstructureinteraction analysis in time domain infoscience. Box 8022, zurich, switzerland received 6 october 1987 381 the procedures to perform nonlinear soilstructureinteraction analysis in the time domain are summarized. Both studies are performed using the finite element program lsdyna. Request pdf efficient time domain deconvolution of seismic ground motions using the equivalentlinear method for soil structure interaction analyses deconvolution is the process that evaluates.
One modeling feature useful to soilstructure interaction is the gap compressiononly link object, which enables foundation uplift without the development of tensile forces. Comparing the results with those in literature shows the exactness and competency of the proposed method. The hyperlinks below, present the concepts and techniques associated with modeling soilstructure interaction. Numerical analysis of nonlinear soil structure interaction m. Ultimate limit state analysis uls mc model is enough. It is concluded that soil structure interaction reduces strength reduction factors for soft soils. Earthquake wavesoilstructure interaction analysis of tall.
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