Effect of interactions on dynamic active earth pressures m. Numerical analysis of nonlinear soil structure interaction m. Modelling of ssi method of analysis soil structure interaction frequency dependent impedance functions constant impedance functions mod. A variety of threedimensional models in different canyons are analyzed. However, the method is inherently linear and a better strategy is to employ the nonlinear time domain analysis method, which is computer intensive but. 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. It is concluded that soil structure interaction reduces strength reduction factors for soft soils. The aim of this paper is perform an numerical dynamic soilstructure interaction analysis in time domain by using the computer program enlas, which is. This paper proposes a direct threedimensional 3d numerical method in time domain for seismic soilstructure interaction ssi analysis of spatial grid structure. In this load transfer mechanism, the characteristics of soil has very important role. Pdf site response, soilstructure interaction and structuresoil. Soilstructure interaction modelling for piles in performancebased seismic design.
Soilstructureinteraction ssi effects are typically nonnegligible for structures that possess one or more of the following attributes. Dynamic analysis of partially embedded structures considering soilstructure interaction in time domain. The objective of this study is to perform a rigorous seismic nonlinear soilstructure interaction analysis in the time domain to satisfy the above re. Soilstructure interaction modelling for piles in performance. Timedomain soilstructure interaction analysis for nuclear. A nuclear containment structure, subjected to ground input motion is analyzed using time domain. 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. Soilstructure interaction c zace services ltd august 2011 160 260. A computer program is prepared to analyze the soilstructure system.
Soil structure interaction ssi effects are typically nonnegligible for structures that possess one or more of the following attributes. 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. Dynamic analysis of partially embedded structures considering. Nonlinear seismic soilstructure interaction analysis based. Seismic soilstructure interaction in the time domain. Home soil structure interaction analysis in time domain. 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. Constitutive aspects g current secant shear modulus. A variety of threedimensional models in different canyons are analyzed and the frequency response functions are obtained. The program has been developed specifically for practical applications and has the following characteristics. Comparing the results with those in literature shows the exactness and competency of the proposed method. Introduction in a dynamic soilstructure interaction problem, the structure is supported by an unbounded. 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.
Soil structure interaction analysis methods state of art. The projects ultimate objective is to offer practicing engineers a robust, reliable option for accounting for inertial soil structure interaction in time domain analyses. Soilstructureinteraction analysis in time domain prentice hall international series in civil engineering and engineering mechanics wolf, john p. Earthquake wavesoilstructure interaction analysis of tall.
Soilstructure interaction civil engineering ce notes. 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. Department of civil and environmental engineering stanford university a methodology for nonlinear soilstructure interaction effects using timedomain analysis techniques by ronaldo i. A frequency domain analysis approach is used for conducting soil structure interaction analysis of concrete gravity dams rigorously 1. Unfortunately, the assumptions does not always hold true. Appendix b nonlinear time domain soil structure interaction.
Jun 23, 2016 in soilstructure interaction analysis the distribution of load from the structure to the soil is investigated. 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. Examples are given to demonstrate the feasibility of this method. 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. Box 8022, zurich, switzerland received 6 october 1987 381 the procedures to perform nonlinear soilstructureinteraction analysis in the time domain are summarized. Survey and classification of computational approaches in soil. Time domain earthquake response analysis method for 2d soil. Time domain simulation of soilfoundationstructure interaction in nonuniform soils boris jeremi.
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. A time domain analysis procedure and method for seismic soilstructure interaction analysis are introduced in this work. Soil structure interaction broadly can be divided into two phenomena. Prestress can be controlled in time 560 sheetpile wall. 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. 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. The coupling between the buildings height, hysteretic damping ratio. Soilstructureinteraction analysis in time domain prenticehall international series in civil. Npps in the united states is often performed in the frequency domain using sassi.
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. Soilstructureinteraction analysis in time domain john. Soilstructure interaction in the time domain sciencedirect. Three dimensional efficient analysis of soilstructure interaction in time domain. Soil physics soil texture soil surface area soil structure volume and mass relationships water content measurements units soil physics. 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. Missouri university of science and technology scholars mine.
Analysis of soilstructure interaction considering complicated soil. Soil structure interaction and seismic design code provision even though the soil has good engineering characteristics 3. Presented methodology relies on rational mechanics and aims to reduce. Nonlinear seismic soilstructure interaction analysis. Nuclear engineering and design 111 1989 3893 northholland, amsterdam soil structure interaction analysis in time domain john p. 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. Mar 20, 2020 soilstructure interaction civil engineering ce notes edurev is made by best teachers of civil engineering ce.
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. In fact, the soil structure interaction can have a. Development and deployment of analysis methodologies suitable for computing the response of deeplyembedded power reactors, including nonlinear time domain, soilstructureinteraction analysis 3. The effect of soilstructure interaction ssi is an important consideration and cannot be neglected. Csi software models soilstructure interaction using a oneparameter winkler soil model. Dynamic wavesoilstructure interaction analysis in the.
Interactive computer code for dynamic and soil structure. Numerical analysis of nonlinear soilstructure interaction. Seismic soilstructure interaction in the time domain university of. On the implementation and applications of discretetime. The hyperlinks below, present the concepts and techniques associated with modeling soil structure interaction. Analysis time function of interaction nodes inefficient specially when. This conservative simplification is valid for certain class of structure and soil conditions, such as light structures in relatively stiff soil. The importance of performance based design approaches and soil structure interaction in seismic design of structures are internationally recognized. Threedimensional efficient analysis of soilstructure interaction in.
The hyperlinks below, present the concepts and techniques associated with modeling soilstructure interaction. Abstract a new numerical procedure is proposed for the analysis of three. The bounding surface plasticity model is implemented to model the near field. 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. Estimation of natural frequency and damping factor for dynamic soil structure interaction systems f. Soilstructureinteraction analysis in time domain prentice hall international series in civil engineering and engineering mechanics. Analysis of i f must consider shear wall configuration and potential rotational coupling between walls 2. This paper addresses the time history finite element analysis of rock structure interaction. One modeling feature useful to soil structure interaction is the gap compressiononly link object, which enables foundation uplift without the development of tensile forces. A computer program is prepared to analyze the soil structure system. The procedures to perform nonlinear soilstructureinteraction analysis in the time domain are summarized. For time history analyses the modelling of soil by the sbfem in time domain is straightforward figure 3a. Both studies are performed using the finite element program lsdyna. 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. It introduces the main factors important to the application of. Recursive evaluation of interaction forces of unbounded soil in frequency domain s. Soilstructure interaction using computer and material models covers computer and analytical methods for a number of geotechnical problems. Timedomain soilstructure interaction analysis of nuclear. The paper presents a novel approach for performing soil structure interaction ssi analysis. Earthquake wavesoilstructure interaction analysis of. 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. 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 analysis in time domain prentice hall international series in civil engineering and engineering mechanics wolf, john p. The behavior of soil is predicted based on the engineering properties of soil, vertical soil profile and the alignment of ground surface. Recent advances in seismic soilstructure interaction analysis of. Soilstructure interaction broadly can be divided into two phenomena. Soilstructure interface effects on dynamic interaction analysis of reinforced concrete lifelines y.
Linear material properties for soil and structure tied soil structure interface behavior applicable to small range of seismic hazard. Soil structure interaction modelling for piles in performancebased seismic design. The nonlinearity is restricted to the structure and possibly an adjacent irregular soil region. Soilstructure interaction technical knowledge base.
Soilstructureinteraction analysis in time domain prentice. One modeling feature useful to soilstructure interaction is the gap compressiononly link object, which enables foundation uplift without the development of tensile forces. Soilstructure interaction response to high amplitude forced vibration d. Ultimate limit state analysis uls mc model is enough. Box 8022, zurich, switzerland received 6 october 1987 381 the procedures to perform nonlinear soil structure interaction analysis in the time domain are summarized. 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. Earthquake ground motion causes soil displacement known as freefield. 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. Time domain earthquake response analysis method for 2d.
Introduction in a dynamic soil structure interaction problem, the structure is supported by an unbounded. This includes the selection of the soil model, the far field model, the structural model and the soil structure interaction analysis method. The procedures to perform nonlinear soil structure interaction analysis in the time domain are summarized. Soilstructureinteraction analysis in time domain sciencedirect. This document is highly rated by civil engineering ce students and has been viewed 969 times. Comparative study of timedomain versus frequency domain. This paper addresses the time history finite element analysis of rockstructure interaction. The unbounded soil far field must remain linear in this formulation. A time domain analysis procedure and method for seismic soil structure interaction analysis are introduced in this work. A timedomain substructuring method for dynamic soil. 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. 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.
A simplified 3d model for soilstructure interaction with. The report further illustrate the resonance vibration of building and variation in nature of design. 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. Modelling of ssi method of analysis soilstructure interaction frequency dependent impedance functions constant impedance functions mod. A new interactive computer code is presented in this paper for dynamic and soilstructure interaction ssi analyses.
Soil structure interaction and seismic design code provision. This interaction is termed structuresoilstructure interaction sssi, which can be important for the performance assessment of buildings, especially those constructed in dense, urban areas. 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 soilstructure interaction analysis and validate the developed algorithm by comparing numerical simulations with experimental data. The former needs high computational cost while the latter ignores the nonlinear effect of dynamic interaction between soil and structure. In soilstructure interaction analysis the distribution of load from the structure to the soil is investigated. Modeled is not only the lateral energy dissipation, but also the interaction between the far field and the numerical model itself. Soilstructureinteraction analysis in time domain infoscience.
The results of equivalentlinear frequency domain analysis and nonlinear timedomain analysis begin to diverge significantly for cases where a soil strains are. Numerical analysis of nonlinear soilstructure interaction m. The temporal global coupling of the interaction forcedisplacement relationship. Somainiapproximate dynamic model of embedded foundation in time. Earthquake wavesoilstructure interaction analysis of tall buildings by ming ming yao b. Department of civil and environmental engineering stanford university a methodology for nonlinear soil structure interaction effects using time domain analysis techniques. Besides the direct method where local frequencyindependent boundary conditions are enforced on the artificial boundary. Structuresoilstructure interaction analysis in a highly. Site response analysis of soil layers to the interaction. 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. This includes the selection of the soil model, the far field model, the structural model and the soilstructure interaction analysis method.
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. There are two methods available for modeling the soil structure interaction ssi. Evaluation of the frequency and time domain soilstructure. Seismic soilstructure interaction ssi analysis of nuclear power plants. Application of 3d time domain method for seismic soilstructure. The earthquake wave soil structure interaction analysis of tall buildings is the main focus of this research. Seismic safety margins research program responsibility prepared by j. Soilstructureinteraction analysis in time domain nuclear. To establish a firm base for the classification of the methods, the objective and the significant features of soilstructureinteraction analysis described in the.
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