A master thesis from Aalborg University
Dynamic analysis of Soil-Foundation Interaction
[Dynamisk analyse af Jord-Fundament Interaktion]
Author(s)
Term
4. term
Education
Publication year
2016
Submitted on
2016-06-06
Pages
88 pages
Abstract
Dette projekt består af en dynamisk analyse af Jord-Fundament Interaktion, dvs. Jord-Struktur Interaktion (JSI) og Struktur-Jord-Struktur Interaktion (SJSI). Formålet med projektet er at studere forskellige bølge udbredelses mønstre. Dette er blevet undersøgt i tids domæne. De anvendte frekvenser repræsenterer menneskeskabte, miljømæssige vibrationer. Først, er det grundlæggende teori forklaret og baseret på denne teori, er en simpel model for overflade bølger beskrevet. Dernæst, er finite element metoden beskrevet, hvorefter disse modeller er sammenlignet med hinanden. Efter der er redegjort for grundlæggende egenskaber og antagelser, er de faktiske mønstre på jordoverfladen undersøgt i tids domæne. Forskellige parametre er analyseret og deres respektive indflydelse på resultatet er forklaret. Den sidste del af rapporten fokuserer på JSI, hvor fundamentet er påvirket med forskellige konfigurationer af puls og harmonisk belastning og det vertikale respons af dette er analyseret i en afstand, ved et andet fundament. Dette resulterer i et forslag om at simplificere modellen.
This project consists of a dynamic analysis of Soil-Foundation Interaction, i.e. Soil-Structure Interaction (SSI) and Structure-Soil-Structure Interaction (SSSI). The aim of the project is to study different wave propagation patterns. This has been studied in time domain. The used frequencies will be representative for man-made environmental vibrations. Firstly, the basic theory is explained and based on this theory, a simple model is described for surface waves. Secondly, the finite element model is described and based on both models, a comparison between the methods is made. After all basic properties and assumptions, the actual patterns in the soil is studied in time domain. Different parameters are analysed and their respective influence on the results is explained. The last part of this project contains the SSI, wherein different foundation configurations are excited with pulse and harmonic loads and the vertical responses at another foundation, some distance away, are analysed. This results in a suggestion for simplification of the model.
Keywords
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