shaking table test study on dynamic behavior of micropiles in loose sand

Machhour Sadek's research works | Université de Lille ...

Reference: Shaking table test study on dynamic behavior of micropiles in loose sand Influence of micropile inclination on the performance of a micropile network Citing article

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Draft - University of Toronto T-Space

structure in liquefiable ground using a shaking table test. Cubrinovski et al. (2006) investigated the response of a single pile subjected to lateral spreading of liquefied soil using shake table test. Dobry et al. (2010) studied liquefaction-induced lateral spreading by conducting shake table testing of a sloping saturated sand deposit.

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shaking table test liquefaction

The test results demonstrate that the number of cycles required to reliquefy each sand decreased significantly following the 1st liquefaction event as a result of destroying the {"}aged{"} sand fabric developed prior to the 1st shaking event via secondary compression of the initially loose sands.

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NUMERICAL STUDY FOR CENTRIFUGAL MODEL TESTS OF A …

behavior of soils Fin. et al.n [9] used a finite element model for soil-pile interaction to simulate experiment results of a shaking table test with restrictions on the motion in the vertical direction and in the direction to that of the pile motion. Kimura and Zhang [10] con-ducted a series of static and dynamic …

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Engineering Analysis of Dynamic Behavior of Micropile ...

Despite the growing use of micropiles, results from static and cyclic lateral load tests on micropiles are limited [29], as well as dynamic test on small-scale prototypes, i.e. [30] [31] [32], and ...

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SEISMIC STUDY OF REINFORCED EARTH WALLS BY SHAKING …

The seismic behaviors of reinforced earth walls have been investigated by shaking table (1-g) or centrifuge (n-g) models. Table 1 shows a brief summary of some 1-g shaking table model tests. Dry sand has been used as the backfill in all tests, mentioned in Table 1.

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SAND STATE AND PERFORMANCE ANALYSIS OF MICROPILES

state dependent sand model was first validated using a full scale test on a micropile group on Fontainbleau sand. The FLAC3D model was then used to study the effect of key

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FREE FIELD LIQUEFACTION STUDIES THROUGH SHAKING …

Study on dynamic behavior of soil from free field tests Fig. 6 Liquefied sand at the end of the test Fig. 7 Variation of pore water pressure with dynamic time 3 Fig. 8 Variation of effective stress with dynamic time Loading pattern Sinusoidal NUMERICAL SIMULATIONS Numerical simulation of shaking table tests is done using

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Shaking table test on seismic response behavior of 2-story ...

ABSTRACT: This report is the study on the dynamic properties and seismic performance of the two-story masonry house model by the 1/4-scale shaking table test. The specimen is an ordinary dwelling house in south Asia. The shaking table test was carried out by the sinusoid input wave of the one direction in the horizontal direction. Acceleration and

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Engineering Analysis of Dynamic Behavior of Micropile ...

A series of centrifugal tests was conducted on micropile groups and network systems to investigate the system response to earthquake loading and the superstructure soil-micropile interaction behavior. Model tests on vertical and batter micropile systems embedded in loose to medium-dry sand under different levels of shaking are described.

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buy spiral sand washer in america

Fine Material Washer Sand Screws Diamond Equipment. The sand particles are transported to the inclined discharge end by a double pitched steel spiral shaft with replaceable cast wear shoes the smaller lighter unwanted particles are floated to the surface of the claim settling pool and are discharged over the weirs fine material washers for fines recovery sand manufacturing concrete

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Settlements of saturated clean sand deposits in shaking ...

Jan 01, 2010· Table 1 shows a summary of previously conducted laboratory experiments available to the authors relevant to the earthquake-induced settlement of clean sands. It can be seen that these settlement studies are based on test results for both dry and saturated sands. It was found that the volumetric strain (ε v) of dry sand due to earthquake shaking depends on density, confining pressure, …

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Method Improvements of Testing Modulus of Soil Based on ...

2. Dynamic Elastic Modulus Testing Theory 2.1. Bending Vibration Equation. Cascante et al. [] earlier put forward the appliance of lateral vibration test method in measuring the dynamic elastic modulus of soil.In analyzing, the vibration shape of soil column is assumed as cubic polynomial equation, and the additional force of drive board to the top of soil column is recognized as vertical ...

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Session 5: Soil Structure Interaction Under Dynamic ...

Nonlinear Time Domain Numerical Model for Pile Group Under Transient Dynamic Forces. Toyoaki Nogami, University of California, San Diego, CA Kazuo Konagai, University of Tokyo, Japan Jun Otani, Kyushu University, Japan. St. Louis, Missouri. 12:00 AM - 12:00 AM. 12:00 AM: Numerical Simulation of Shaking Table Test by Nonlinear Response Analysis ...

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Shaking table test study on dynamic behavior of micropiles ...

Jul 01, 2018· Due to wide application of micropiles in seismically active areas, investigation of their behavior during earthquake is of great significance. In this study, shaking table tests were conducted on a small-scale physical model of micropiles consisting 16 vertical micropiles embedded in loose sand fill and subjected to harmonic sine waves.

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Effect of fines on liquefaction using shake table test

Sep 21, 2016· The present paper deals with the experimental work carried out to study the effects of fines on earthquake induced liquefaction using shake table test. The shake table test well simulates the field conditions in the laboratory. To study the liquefaction behavior of the sand silt mixture, the other parameters used in this study are cyclic stress ...

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Large-scale shaking table tests on the seismic responses ...

1. Introduction. Seismic excitation is one of the most important causes of slope failure to understand. For example, numerous landslides of different types were generated during the Wenchuan earthquake in 2008, the Lushan earthquake in 2013, the Ludian earthquake in 2014 and the Jiuzhaigou earthquake in 2017; soil slope failure accounted for a large proportion of these earthquake-induced ...

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Shaking Table Experiments to Evaluate the Boundary Effects ...

Jan 30, 2020· The laminar shear boxes (LSBs) are commonly preferred for geotechnical physical modeling over the fixed wall boxes; the latter may suffer from problems associated with wave reflection. This paper mainly describes the seismic response of a uniform layer of loose saturated and dry sands in rigid and flexible boundary conditions. A lightweight LSB was recently designed and fabricated by the ...

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Shaking Table Tests of Seismic Pile-Soil-Pier Structure ...

method. Thus, dynamic centrifuge and shake table tests are becoming popular ways to study the behavior of pile- supported structure in different soil type [2,3,4,5,6]. Numerous cases of pile foundation and pile-supported structure damage during Loma Prieta …

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[PDF] Practical Advice for Foundation Design – Micropiles ...

Certain details of micropile design remain unresolved between various practitioners and such disagreements have limited the acceptability of micropil es in certain quarters. Detailed micropile design is an extremely length y and often complex subject, especially when micropile groups are concerned or seismic issues must be addressed. The paper provides a simplified step -by-step design ...

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