In practice, the effects of soil structure interaction on the dynamic response of structures are usually neglected. A nuclear containment structure, subjected to ground input motion is analyzed using time domain. Considerations in soil structure interaction effects. The analysis by cusp catastrophe theory shows that because of nonlinear spring, the system has the frequency characteristics and the soilstructure interaction system does not produce a resonance. Interactive computer code for dynamic and soil structure. Soil structure interaction analysis for npps is routinely. The procedures to perform nonlinear soil structure interaction analysis in the time domain are summarized. By using the direct method of analysis, like time domain method problem can also be solved in frequency domain method using fourier transform function for a. Pdf download for earthquake input energy to soil structure interaction systems. But these are not able to change the soil motion in all conditions. Soil structure interaction analysis in time domain prenticehall international series in civil engineering and engineering mechanics prentice hall series in solid state physical electronics. Seismic soilstructure interaction in the time domain. Analysis time function of interaction nodes inefficient specially when.
For time history analyses the modelling of soil by the sbfem in time domain is straightforward figure 3a. Linear material properties for soil and structure tied soil structure interface behavior applicable to small range of seismic hazard. The nonlinearity is restricted to the structure and possibly an adjacent irregular soil region. Appendix b nonlinear time domain soil structure interaction. Timedomain soilstructure interaction analysis of nuclear. Seismic response analysis of wind turbine towers including. Intended to complement asce 43, this standard addresses the seismic analysis of new and existing facilities. Developments in dynamic soilstructure interaction pp 123 cite as. Survey and classification of computational approaches in soil. Pdf soilstructure interaction analysis using a 1dt3c wave. Timedomain soilstructure interaction analysis for nuclear. On soilstructure interaction analysis of concrete gravity. Shear modulus decay curve left and input shear strain time history right. Dynamic analysis of partially embedded structures considering.
Soil structureinteraction analysis in time domain damasgate. 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. Because of the settlement and rotation of foundation, shear force and bending moment in superstructure get altered. The former needs high computational cost while the latter ignores the nonlinear effect of dynamic interaction between soil and structure. 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. Starting from the analysis of a simply supported eulerbernoulli beam model subjected to moving loads, a threedimensional multibody soilabutmentbridgeballastsleeperrail model formulated in the time domain to study the vibrations induced due. Comparative study of timedomain versus frequency domain. 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. Pmdl is one of the most efficient methods to solve soilstructure interaction problems. Numerical analysis of nonlinear soil structure interaction m. A timedomain substructuring method for dynamic soil. Nonlinear seismic soilstructure interaction analysis based. This includes the selection of the soil model, the far field model, the structural model and the soil structure interaction analysis method. Box 8022, zurich, switzerland received 6 october 1987 381 the procedures to perform nonlinear soilstructureinteraction analysis in the time domain are summarized.
Time domain simulation of soilfoundationstructure interaction in nonuniform soils boris jeremi. This may be useful when performing analyses for beyond design basis events see chapter 1. Pdf timedomain soilstructure interaction analysis of. A structure, when analyzed by considering its foundation to be rigid, is said to have no soil structure interaction effects. Soil structure interaction ssi effects are typically nonnegligible for structures that possess one or more of the following attributes.
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. Effect of soilstructure interaction on seismic performance. Introduction in a dynamic soil structure interaction problem, the structure is supported by an unbounded. This effect is called as soil structure interaction. Soilstructure interaction analysis of pile foundations. Effect of interactions on dynamic active earth pressures m. The procedures to perform nonlinear soilstructureinteraction analysis in the time domain are summarized. The scale effect resulting from the small scale model is always coupled with. Dynamic soilstructure interaction analysis in time domain based on a modified version of perfectly matched discrete. A new interactive computer code is presented in this paper for dynamic and soil structure interaction ssi analyses. Soil structure interaction analysis in time domain download. Yang and elgamal 2002 is an analysis framework for saturated soil response as a twophase material following the.
A variety of threedimensional models in different canyons are analyzed and the frequency response functions are obtained. Both studies are performed using the finite element program lsdyna. Clouteau4 abstract soil structure interaction analyses are traditionally performed in the linear elastic or viscoelastic domain for the soil profile. The analysis by cusp catastrophe theory shows that because of nonlinear spring, the system has the frequency characteristics and the soil structure interaction system does not produce a resonance. Time domain earthquake response analysis method for 2d soil. Soil structure interface effects on dynamic interaction analysis of reinforced concrete lifelines y. Earthquake wavesoilstructure interaction analysis of tall. Jul 30, 2018 this paper presents the dynamic soilbridge interaction under highspeed railway lines, under different soil stiffness conditions.
In this paper, a multibody model of wind turbine towers with the consideration of soilstructure interaction ssi is proposed to investigate their dynamic responses to seismic excitations in time domain. 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. The earthquake wave soil structure interaction analysis of tall buildings is the main focus of this research. Evaluation of the frequency and time domain soilstructure interaction analysis methods against the hualien. This document is highly rated by civil engineering ce students and has been viewed 969 times. A computer program is prepared to analyze the soil structure system. Soilstructureinteraction analysis in time domain sciencedirect.
Nonlinear seismic soil structure interaction ssi analyses are. Mar 20, 2020 soil structure interaction civil engineering ce notes edurev is made by best teachers of civil engineering ce. Timedomain soil structure interaction analysis in twodimensional medium based on analytical frequencydependent infinite elements. Assembly of a frame structure and a multilayer soil domain shaken by a threecomponent seismic. The nuclear regulatory commission nrc regulation 10 cfr part 50 appendix s requires consideration of soil structure interaction ssi in nuclear power plant npp analysis and design.
Analysis of i f must consider shear wall configuration and potential rotational coupling between walls 2. A frequency domain analysis approach is used for conducting soil structure interaction analysis of concrete gravity dams rigorously 1. Soil structure interaction response to high amplitude forced vibration d. Comparing the results with those in literature shows the exactness and competency of the proposed method. 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. Soilstructureinteraction analysis in time domain prentice. Development and deployment of analysis methodologies suitable for computing the response of deeplyembedded power reactors, including nonlinear time domain, soilstructureinteraction analysis 3. Soilstructure interaction in the time domain sciencedirect. Box 8022, zurich, switzerland received 6 october 1987 381 the procedures to perform nonlinear soil structure interaction analysis in the time domain are summarized. International journal of numerical methods in engineering, 47 7, 12411261. There are two methods available for modeling the soil structure interaction ssi. While considering soil in the analysis of building frame 100% fixity may not be ensured. Frequency response analysis of soilstructure interaction for.
Dynamic soilstructure interaction analysis in time domain based on. It introduces the main factors important to the application of. Nuclear engineering and design 111 1989 3893 northholland, amsterdam soil structure interaction analysis in time domain john p. Analysis and design of structures subjected to arbitrary dynamic loadings especially earthquakes have been studied during past decades. In this study, the effect of soil structure interaction on the dynamic response of structures has been examined. Soil structure force are mainly interaction forces that can occur for every structure.
Dynamic wavesoilstructure interaction analysis in the time. Earthquake input energy to soilstructure interaction systems. Seismic analysis of safetyrelated nuclear structures, standard ascesei 416, presents the analytical framework to develop a riskinformed approach to the design of nuclear structures under earthquake motions. Especially for longspan bridge, a smaller tested model is required when ssi phenomenon is considered in the physical test.
Soilstructureinteraction analysis in time domain nuclear. Soilstructure interaction civil engineering ce notes edurev. Evaluation of the frequency and time domain soilstructure. Soilstructure interaction is an area of major importance in geotechnical engineering and geomechanics advanced geotechnical engineering. Request pdf timedomain soilstructure interaction analysis for nuclear facilities seismic analysis of nuclear power plants is routinely carried out using. Pmdls with analytical wavelengths awpmdls, is used in the soil structure interaction analysis in time domain, which essentially can be regarded as an extension of the analysis in frequency domain, being previously proven to be effective. Because of the limitations of testing facilities and techniques, the seismic performance of soil structure interaction ssi system can only be tested in a quite small scale model in laboratory. Soil structure interaction analysis in time domain prentice hall international series in civil engineering and engineering mechanics wolf, john p. Numerical analysis of nonlinear soilstructure interaction. Dynamic soilstructure interaction analysis in time domain. Using joint beam elements, the elastic tower is discretized into many rigid bodies coupled elastically by constraint joints and springs. Soilstructureinteraction analysis in time domain john p. A time domain analysis procedure and method for seismic soil structure interaction analysis are introduced in this work.
Nonlinear seismic soilstructure interaction ssi analyses are. 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. Pdf the soilstructure interaction ssi is generally neglected for seismic design of ordinary buildings. In dynamic soilstructure interaction analysis, usually the higher modes of the. Study of direct finite element method of analysing soil. Nuclear engineering and design 111 1989 3893 northholland, amsterdam soilstructureinteraction analysis in time domain john p. A new numerical procedure is proposed for the analysis of three. Modelling of ssi method of analysis soil structure interaction frequency dependent impedance functions constant impedance functions mod. Seismic safety margins research program responsibility prepared by j. The bounding surface plasticity model is implemented to model the near field. The unbounded soil far field must remain linear in this formulation.
Soilstructure interaction using computer and material models covers computer and analytical methods for a number of geotechnical problems. Structuresoilstructure interaction analysis in a highly. Seismic analysis of safetyrelated nuclear structures. 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. Pdf download for earthquake input energy to soilstructure interaction systems.
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