The earthquake wave soil structure interaction analysis of tall buildings is the main focus of this research. Soil structure interaction modelling for piles in performancebased seismic design. Approach sgh performs a broad range of services in soil structure interaction ssi analysis and wave propagation for the calculation of responses of structures, systems, and components sscs to seismic and impact loads. Determination of soil structure interaction effects for a model test structure using parametric system identification procedures salih tileylioglu 1, robert l. Effects of soilstructure interaction on the seismic response. Civil engineering introduction to earthquake engineering nptel. Local procedures in section 3 are grouped as transmitting boundary conditions, infinite elements and absorbing layers. Pdf soilstructure interaction modelling for piles in. Use of finite difference method fdm for soil structure interaction problems week 11.
Conventional structural design methods neglect the ssi effects. 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. Fema 2000 implies that soil structure interaction may modify the seismic demand on a building. 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. Sundaravadivelu,department of ocean engineering,iit madras. Soilstructure interaction civil engineering ce notes edurev.
Soil structure interaction for building structures prepared for u. Earthquake wavesoilstructure interaction analysis of tall. The course will focus on the different soilstructure interaction models for shallow foundation under various loading conditions and subgrade. Soil framed structure interaction analysis a new interface element 227 latin american journal of solids and structures 12 2015 226249 other soil structure interaction model is winkler model, through which, soil is presented by. The fourth aspect is to build in the immediate future, a coursespecific web space for each course where students, teachers and other users anywhere in india and outside would be encouraged to create threaded discussions. This paper offers a guided tour through the various ways of accounting for soilstructure interaction ssi in design and analysis, ranging from a complete analysis of the combined system of structure, foundation and surrounding soil. Modelling of deformations in dynamic soilstructure. This document is highly rated by civil engineering ce students and has been viewed 978 times.
Approximate solutions to the forced vibrations of a rigid circular plate attached to the surface of an elastic halfspace are presented for large values of the frequency factor. In that model, the layered soil medium is divided into thin layers and each thin layer is represented by a parametric model. Mar 22, 20 soil structure interaction modeling effects on global responses. Soilstructure interaction technical knowledge base. 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. Both studies are performed using the finite element program lsdyna. Earthquake response of nonlinear buildingfoundation systems e. Hypercity mall, kasarvadavali, ghodbunder road, thane west, thane, maharashtra 400615 phone. In addition, the general applicability of lsdyna for this type of study is assessed by comparing the dynamic. Soil structure interaction response to high amplitude forced vibration d. The concept of structuresoilstructure dynamic interaction was introduced, and the research methods were discussed.
Soil structure interaction broadly can be divided into two phenomena. Earthquake ground motion causes soil displacement known as freefield. It influences the behavior of soil, as well as the response of pile under loading. Taft records of the 1952 kern county earthquake were selected as the initial seed time histories figure 3. Effects on displacementbased pushover analysis initial seismic demand freefield. 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. Nonlinear seismic soil structure interaction ssi method for developing nonlinear seismic ssi analysis techniques justin coleman, p.
The terms soil structure interaction ssi and soil foundation structure interaction sfsi are both used to describe this effect 6. Soil structure interaction and seismic design code provision even though the soil has good engineering characteristics 3. If the structure was rigid and the foundation unable to translate, the natural frequency for rocking would be v 4. This interaction is termed structure soil structure interaction sssi, which can be important for the performance assessment of buildings, especially those constructed in dense, urban areas. For the love of physics walter lewin may 16, 2011 duration. Kousik deb,department of civil engineering,iit kharagpur. Sc solutions neacsniiage iaea issc ssi workshop ottawa, canada october 68, 2010.
Abaqus framed reinforced concrete multistorey structure. The term freefield refers to motions that are not affected. A simple soilstructure interaction model sciencedirect. Damfoundation interaction under spatially correlated random ground motion m. There are two methods available for modeling the soil structure interaction ssi. This brief lecture introduces you to the topic of soil structure interaction. 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. Laterally loaded piles, reese and matlocks generalized solution, displacement of pile group. The acceleration time history at the tower top, where the tower acceleration response is significantly decreased due to degradation of soil stiffness and energy dissipation through soil hysteresis, clarifies the effects of soil nonlinearity. The report further illustrate the resonance vibration of building and variation in nature of design. The importance of performance based design approaches and soil structure interaction in seismic design of structures are internationally recognized.
Soilstructure interaction effects on seismic behaviour of. This video presents one of the ways of modelling framed reinforced concrete multistorey structures subjected to earthquakes in the commercial finite element program abaqus. The dissertation studies a method of fe modelling of the deformations and section forces, and also the extent of the soil structure interaction, by. Group action of pile, elastic analysis, settlement of pile group under compressive load by interaction factor approach, negative skin friction.
It is concluded that soil structure interaction reduces strength reduction factors for soft soils, therefore, using the fixedbase strength reduction factors for interacting systems lead to non. Jun 23, 2016 soilstructure interaction plays an important role in the behavior of structure under static or dynamic loading. Pro is one of the most widelyused software for developing and analyzing the designs of various structures, such as petrochemical plants, tunnels, bridges etc. A description of the basic phenomenon is given, and general guidance is provided as to when ssi could be beneficial in. The paper concludes with an overview of the advantages of the nonlinear time domain technique to soil structure interaction problems in the nuclear power industry. The interaction between teachers in various colleges and the course developers in iitsiisc is a mandatory requirement for nptel. Apr 09, 2020 soil structure interaction civil engineering ce notes edurev is made by best teachers of civil engineering ce. Soilstructure interaction civil engineering ce notes. Proteins lecture 11 myoglobin and hemoglobin spring 2012 animated illinois proteins lecture 11 mb and myoglobinhemoglobinhb suggested reading. Soil structure interaction ssi knowledge and effect on the seismic assessment of npps structures and components recent advances in seismic soil structure interaction analysis of npps mansour tabatabaie, ph. Mar 17, 2017 this brief lecture introduces you to the topic of soil structure interaction.
The term soil can have different meanings, depending upon the field in which it is considered. 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. A simple threedimensional soil structure interaction ssi model is proposed. Seismic soil structure interaction ssi is a key factor that has to be considered in design, particularly for retaining structures and structures with deep foundations, such as jetties. Analysis of jointless bridges due to horizontal actions and. Nptel, online courses and certification, learn for free. Neglecting ssi is reasonable for light structures in relatively stiff soil such as low rise buildings and simple rigid retaining walls. Structuresoilstructure interaction analysis in a highly. One modeling feature useful to soil structure interaction is the gap compressiononly link object, which enables foundation uplift without the development of tensile forces. Soil structure interaction and seismic design code provision. Department of commerce national institute of standards and technology engineering laboratory gaithersburg, md 20899 by nehrp consultants joint venture a partnership of the applied technology council and the consortium of universities for research in earthquake engineering. Sgh performs soil structure interaction ssi analyses to evaluate the true responses of these systems. The hyperlinks below, present the concepts and techniques associated with modeling soil structure interaction. Lecture 28 fluid structure interaction ii dynamic analysis of offshore jacket platforms lecture 29 steps of analysis using software nptel video lecture topic list created by linuxpert systems, chennaiget digimat digital media access terminal for highspeed video streaming of nptel and educational video courses in lan.
Soil structure interface effects on dynamic interaction analysis of reinforced concrete lifelines y. Effects of an irregular soil profile on site amplification j. Soilstructure interaction modelling for piles in performance. Soilstructure interaction ssi analysis evaluates the collective response of three linked systems. Effect of interactions on dynamic active earth pressures m. Dynamic soil structure interaction ppt, engineering. Soilstructure interaction analyses are traditionally performed in the linear elastic or viscoelastic domain for the soil profile. Soilstructure interaction for building structures nehrp. Ceen 545 lecture 22 introduction to soil structure. Recent advances in nonlinear soilstructure interaction. Recent advances in seismic soilstructure interaction. Soilframed structure interaction analysis a new interface. Overview of soil structure interaction principles jonathan p. Soilstructure interaction overview all civil engineering structures, irrespective of being simple or complex, founded in hard solid ground or in deep water offshore seabed, has to ultimately transfer the loads to the ground through a foundation.
Also, the soilstructure interaction ssi problem has become an important feature of structural engineering with the advent of massive constructions on soft soils. Soilstructure interaction analysis of rc frame shear wall. Soil structure interaction analysis using an equivalent linear model for the soil real case application conference paper pdf available january 2005 with 219 reads how we measure reads. A simple threedimensional soilstructure interaction ssi model is proposed. 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. To a geologist, it is the material in the relative thin zone of the earths surface within which roots occur, and which. The analysis is highly essential for predicting a more accurate structural behavior so as to improve the safety of structures under extreme loading conditions. Candidate, department of civil and environmental engineering, boelter hall 6689, university. Feb 29, 2012 soil structure interaction amec presentationfinal 1. The time histories were developed so that they provided.