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2024 | Book

Dynamic of Soil in Ground-Borne Vibration Mitigation

Design, Application, and Predictive Approaches

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About this book

In the heart of big cities, a less obvious challenge exists right under our feet. The everyday activities of city life, like traffic, construction, and industrial work, do more than just create noise. They send vibrations through the ground, which can be problematic, sometimes even destabilizing buildings and affecting the people who live there. This modern issue needs a modern solution. This book introduces the concept of trenches filled with a material called geofoam, an innovative method to control these ground vibrations. Mehran Naghizadeh delves into a detailed study to see how placing these trenches in specific locations can help protect against these vibrations. The book walks through various automated 2D and 3D models, demonstrating how the trenches can be effectively used to protect areas close to and far from the source of vibrations. The study goes beyond just explaining what these trenches are and how they work. It looks into the reasons behind their design, examining different trench shapes and how each shape helps in managing these underground vibrations. The challenge is more complex than it seems. The ground we walk on is not just a single layer but has different layers with various properties. This book takes you on a journey to understand how these layers influence the effectiveness of our vibration warriors. It’s an exploration of how every layer in the soil contributes to managing vibrations.

Table of Contents

Frontmatter
Chapter 1. Introduction
Abstract
As more people flock to large cities, the landscape of urban living is rapidly changing. This population increase leads to the construction of more buildings and transportation networks, making the urban environment denser and more complex. One consequence of this urban expansion is an increase in vibration problems, primarily caused by sources like passing trains, machinery foundations, traffic, and ongoing construction activities.
Mehran Naghizadeh
Chapter 2. Literature Review
Abstract
In science, a wave is defined as a disturbance involving the transfer of energy from one place to another. A wave requires a medium to travel. For instance, air is a medium for travelling sound waves. The simplest form of vibratory motion is harmonic or sinusoidal motion that can be described mathematically by Eq. (2.1) [114].
Mehran Naghizadeh
Chapter 3. Genetic Algorithm and Artificial Neural Network
Abstract
Optimization consists of studying different aspects of an initial idea and using the gained information to improve it. A computer is a perfect tool for optimization when the factors influencing the idea can be input in a readable format by a computer. The terminology (best solution) in optimization implies that there is more than one solution and the solutions are not of equal value.
Mehran Naghizadeh
Chapter 4. Vibration Screening in Homogeneous Soil
Abstract
The mitigation of structures vibration can be accomplished by providing more damping elements in the transmission path of incident waves by means of installation devices like an isolation trench. An advantage of interventions on transmission path is that no change to the track is required, while a big area can be protected from vibration. In addition, the implementation of this system along an existing path can be achieved relatively easy.
Mehran Naghizadeh
Chapter 5. Shape Optimization of the Trench by Genetic Algorithm
Abstract
The results in Chapter 4 showed that the most important parameters for the design of an efficient barrier is the location and the geometry of the barrier, mainly depth and width. The same FEM coupled with a genetic algorithm presented in Chapter 4 was used to obtain the optimized configuration of geofoam and concrete-filled barriers. In this chapter, an approach is proposed by coupling a FEM, with a genetic algorithm through Python programming language to obtain the optimized configuration of geofoam and concrete-filled barriers.
Mehran Naghizadeh
Chapter 6. Vibration Screening in Layered Soil
Abstract
The investigations on vibration isolation problem are usually done based on the ideal situation of homogeneous half-space with constant properties of elastic parameters over the depth, which is not realistic. In nature, however, the shear modulus of the soil usually changes with depth while the mass density and other properties of the soil can be considered approximately as constant. Dynamic properties and non-homogeneity of the soil play a significant role in transferring dynamic energy [55].
Mehran Naghizadeh
Chapter 7. Optimization and Prediction of the Trench in Layered Soil
Abstract
This section deals with the optimization of various parameters in layered soil. The result of the parametric study in Chapter 6 showed that there is considerable interaction between different parameters and the pattern of how the factors influence each other was completely unpredictable. Therefore, the developed genetic algorithm model in Chapter 5 is used to optimize all parameters together in layered soil.
Mehran Naghizadeh
Chapter 8. Developing an app for Predicting and Optimizing the Vibration
Abstract
The process of organizing, storing, presenting and sharing of data is called research data management. The main aim of this process is to ensure the reliability and accessibility of research data for other users. In addition, it is an assurance that research data and results remain useful in the long term as users can easily access the data.
Mehran Naghizadeh
Chapter 9. Summary and Conclusions
Abstract
In recent decades, extensive research, encompassing both numerical and experimental methods, has been conducted to enhance our understanding of vibration isolation systems through the use of trenches. A primary focus of these studies has been on rectangular trenches, with only a limited exploration into the use of expanded polystyrene (EPS) geofoam as a soft barrier alternative.
Mehran Naghizadeh
Backmatter
Metadata
Title
Dynamic of Soil in Ground-Borne Vibration Mitigation
Author
Mehran Naghizadeh
Copyright Year
2024
Electronic ISBN
978-3-658-44352-8
Print ISBN
978-3-658-44351-1
DOI
https://doi.org/10.1007/978-3-658-44352-8