scholarly journals A simplified approach for evaluation of seismic displacements of pile group located in soil slope

2020 ◽  
Vol 5 (1) ◽  
pp. 40-50
Author(s):  
H. Hajimollaali ◽  
H. Elahi ◽  
M. Sabermahani ◽  
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◽  
...  
Keyword(s):  
Pile Group ◽  
Soil Slope ◽  
Simplified Approach ◽  
Seismic Displacements

scholarly journals Seismic behavior of pile group in soil slope

2021 ◽  
Author(s):  
Mehdi Zadehmohamad ◽  
Majid Moradi ◽  
Abbas Ghalandarzadeh
Keyword(s):  
Relative Density ◽  
Seismic Behavior ◽  
Pile Group ◽  
Slope Movement ◽  
Shaking Table ◽  
Soil Slope ◽  
Shaking Table Tests ◽  
Pile Groups ◽  
Constant Frequency

Seismic behavior of pile group in slope is interested for many years by researchers .Inthis research Shaking table tests were conducted by means of a rigid-box with 1.8m in length,0.8 in width and 1.2 in height in order to investigate the effects of the location of pile group insand slope on its seismic behavior .A cap supported by a pile group was set in a dry sandslope, and subjected to sinusoidal base motion with constant frequency. Soil used in this studywas firoozkuh sand 161 with 60% relative density. The tests were scaled at 1/10th and the pileswere made from aluminum with 95cm in length and they have fixed head condition.Discussions are focused on the behavior of pile groups in different situations. Main interestsare recognition the effect of slope movement and location of pile group on bending behaviorof piles.

Simplified Approach to Calculating Geometric Stiffness Properties of Tread Pattern Elements

2003 ◽  
Vol 31 (3) ◽  
pp. 132-158 ◽  
Author(s):  
R. E. Okonieski ◽  
D. J. Moseley ◽  
K. Y. Cai
Keyword(s):  
Development Process ◽  
Functional Design ◽  
Simplified Approach ◽  
Tire Industry ◽  
Geometric Stiffness ◽  
Stiffness Properties ◽  
Engineering Parameters ◽  
Net To Gross ◽  
Significant Effort

Abstract The influence of tread designs on tire performance is well known. The tire industry spends significant effort in the development process to create and refine tread patterns. Creating an aesthetic yet functional design requires characterization of the tread design using many engineering parameters such as stiffness, moments of inertia, principal angles, etc. The tread element stiffness is of particular interest because of its use to objectively determine differences between tread patterns as the designer refines the design to provide optimum levels of performance. The tread designer monitors the change in stiffness as the design evolves. Changes to the geometry involve many attributes including the number of sipes, sipe depth, sipe location, block element edge taper, nonskid depth, area net-to-gross, and so forth. In this paper, two different formulations for calculating tread element or block stiffness are reviewed and are compared to finite element results in a few cases. A few simple examples are shown demonstrating the basic functionality that is possible with a numerical method.

A Simplified Protocol for the ortho-Deuteration of Acidic Aromatic Compounds in D2O

2019 ◽  
Author(s):  
Alyssa Garreau ◽  
Hanyang Zhou ◽  
Michael Young
Keyword(s):  
Carboxylic Acid ◽  
Aromatic Compounds ◽  
Large Scale ◽  
Simplified Approach ◽  
Directing Group ◽  
Large Scale Synthesis

<div>Methods to catalytically introduce deuterium in synthetically useful yields ortho to a carboxylic acid directing group on arenes typically requires D2 or CD3CO2D, which makes using these approaches cost prohibitive for large scale synthesis (equipment and reagent costs respectively). Herein we present a simplified approach using catalytic RhIII and D2O as deuterium source, and show its application to H/D exchange on various acidic substrates.</div>

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