Ground Improvement Using Deep Vibro Techniques

Raju, V. R.; Sondermann, Wolfgang

doi:10.1016/b978-0-08-100698-6.00006-4

Cited by 5 publications

(17 citation statements)

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“…The Finite Element (FE) results are presented in terms of settlement ratio (S/S uc , where S is the settlement of floating column group and S uc is the settlement of end bearing column in the unit cell model). This relationship has been proposed by Kok Shien Ng (2017) [4]. The performance of floating stone columns either for large or small groups can be predicted using the results of large group end bearing type columns.…”

Section: Performance Of Leca Columnsmentioning

confidence: 96%

Settlement Prediction of a Group of Lightweight Aggregate (LECA) Columns Using Finite Element Modelling

Zukri¹,

Назир²,

Ng³

2018

IJET

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The method of reinforcing the soft clays with stone columns is the most commonly adopted technique to enhance its load carrying capacity and to reduce settlements. Their performance with respect to bearing capacity is well researched, but the understanding of settlement characteristics still requires extensive investigations. Moreover, no studies have been made to explore the effectiveness of stone columns using Lightweight Expanded Clay Aggregate (LECA) as filler material replacing normal stone/aggregates in order to improve settlement behavior of soft clay. LECA is known as a common lightweight material that have been applied successfully in civil engineering works where weight is an issue because the materials can help to reduce dead loads and lateral forces by more than half in installations over structures and those with soft soils. The purpose of this work is to assess the suitability of reinforcing technique by LECA columns to improve the settlement through finite element. The analysis of performance of LECA column in soft soil improvement was conducted through finite elements methods by using Plaxis 3D commercial software. Based on the results the settlement ratio was reduced as the column length increased until unity at end bearing condition where β=1.0. It is also observed that bulging was reduced with closer spacing between LECA columns.

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Section: Performance Of Leca Columnsmentioning

confidence: 96%

Settlement Prediction of a Group of Lightweight Aggregate (LECA) Columns Using Finite Element Modelling

Zukri¹,

Назир²,

Ng³

2018

IJET

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“…Dynamic simulation has been used a long time, but The rigorous first principles of dynamic simulation have been confined to use by specialists and control engineers who were using models based on transfer functions that were incapable of representing the nonlinearities in systems and the discontinuities in start-up cases for example [1]. The areas of application have been divided into two large groups (plant design and plant operation) [8]. As an essential tool exploring.…”

Section: Conventionalmentioning

confidence: 99%

Molecular dynamics simulation of natural gas sweetening by monoethanolamine

Novin¹,

Shameli

Balali

2020

Eurasian Chem. Commun.

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The aim of the study is to investigate sweeting process of sour gas by dynamic simulation of monoethanolamine (MEA) molecule. In the present paper using molecular dynamic simulation, the interaction of sour gas mixture included methane, ethane and H2S with MEA as absorption was also investigated the quantum method DFT B3LYP 6-311 (+) G** was used for electric charge calculation. The simulation results confirmed that the tendency of the H2S molecule is to be absorbed to amine nitrogen and oxygen hydroxyl group in MEA. No tendency for strong interaction between sulfur atoms of H2S molecule and hydrogen of amine or hydroxyl groups was observed. The investigation of changing distance between the hydrogen of H2S and nitrogen/oxygen of MEA confirmed a stable between hydrogen atoms of H2S and nitrogen/oxygen atoms in MEA. Also the investigation of distance changing show movement of hydrogen atoms of H2S molecule which interacted with MEA molecule in the time frame of the simulation. This study was observed that after absorption of H2S molecule by MEA molecules sour of them made the bridge for connection of MEA molecules with each other. Actually H2S molecules after interact with MEA molecules used addition their free hydrogen forinteraction and Making Bridge. Finally a structure of some MEA molecules are joined together, which are stable up to end of the simulation.

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“…Concepto del uso de sobrecarga temporal (Faraco, 1980) Figura 1.14. (a) Efecto de la vibroflotación en la densidad del suelo; (b) Secuencia constructiva de la vibroflotación (Raju y Sondermann, 2005) Figura 1.15. Criterio de adecuación de suelos para tratamiento por vibrocompactación (Glover, 1982; modificado de Sagaseta, 2006) Figura 1.16.…”

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“…Proceso de ejecución y maquinaria empleada (cortesía de Menard) Figura 2.1. (a) Relleno sobre columnas de grava (Raju y Sondermann, 2005); (b) Columnas de grava por estabilidad al deslizamiento de un relleno (Enoki et al, 1991); (c) Ampliación de calzada (Raju y Sondermann, 2005) Figura 2.2. Estabilización de un talud natural en Route 22 New York State (Goughnour et al, 1991) Figura 2.3.…”

Section: Lista De Figuras Capítulounclassified

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Diseño basado en técnicas de fiabilidad del tratamiento de mejora del terreno mediante columnas de grava

Pollán¹

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DESCRIPCIÓN DEL DOCUMENTO OBJETIVO DE LA TESIS 1. MÉTODOS DE MEJORA DEL TERRENO Y FIABILIDAD. INTRODUCCIÓN 1.1. La mejora del terreno 24 Capítulo 1: Métodos de mejora del terreno y fiabilidad. Introducción 25 Capítulo 1: Métodos de mejora del terreno y fiabilidad. Introducción Capítulo 1: Métodos de mejora del terreno y fiabilidad. Introducción Capítulo 1: Métodos de mejora del terreno y fiabilidad. Introducción 33 Capítulo 1: Métodos de mejora del terreno y fiabilidad. Introducción Capítulo 1: Métodos de mejora del terreno y fiabilidad. Introducción 42 Capítulo 1: Métodos de mejora del terreno y fiabilidad. Introducción 51 Capítulo 1: Métodos de mejora del terreno y fiabilidad. Introducción 65 Capítulo 1: Métodos de mejora del terreno y fiabilidad. Introducción

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Ground Improvement Using Deep Vibro Techniques

Cited by 5 publications

References 1 publication

Settlement Prediction of a Group of Lightweight Aggregate (LECA) Columns Using Finite Element Modelling

Settlement Prediction of a Group of Lightweight Aggregate (LECA) Columns Using Finite Element Modelling

Molecular dynamics simulation of natural gas sweetening by monoethanolamine

Diseño basado en técnicas de fiabilidad del tratamiento de mejora del terreno mediante columnas de grava

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