Engineering and Technology Journal

Effect of Relative Density on Behavior of Single Pile and Piles Groups Embedded with Different Lengths in Sand

Falah. H. Rahil; Mohammed. A. Al-Neami; Kather Abdullah Naji Al-Zaho

Volume 34, 6A , June 2016, , Page 1206-1220

https://doi.org/https://doi.org/10.30684/etj.34.6A.15

Abstract

The present research investigates the effect of axial relative density on the ultimate load of model piles with different lengths driven in dry sandy soil having small scale model piles.The ... Read More ... The present research investigates the effect of axial relative density on the ultimate load of model piles with different lengths driven in dry sandy soil having small scale model piles.The materials used in this study are divided into three parts they are; sandy soil, steel piles and aluminum pile caps.A total number of 27 model tests are carried out using three relative densities (33%, 60%, and 80%) corresponding to loose, medium and dense sand, respectively. A square section steel solid model piles are used with 18 mm width and (320, 420, 520) mm embedded length (Ld). A 6B distance between the piles center to center is selected to eliminate the effect of group interaction.Two pile groups' configuration (1×2) and (2 × 2) are considered in this study connected by aluminum caps with smooth surface having a thickness of 25 mm.The load applied on the models is measured by a pressure transducer connected to the main line of the hydraulic pressure system and applying up to failure. During all the experimental tests, the loading rate is kept at 3 mm/min. It was founded that relative density has more impact on (2×2) pile group than on (1×2) pile group and single pile. The average rate of increase in the ultimate load from loose to medium is about 15% greater than the average rate of increase from medium to dense. Also, the ultimate load of pile increased about 96% with changing the sand density from loose to medium sand for single and piles group while the average increment is about 81% from medium to dense. The increase in embedded length of pile caused increasing the ultimate load capacity and decreasing the settlement ratio. The average rate of increase in the ultimate load when the embeddedlength changes from 32 cm to 42 cm is about 4% less than the average rate of increase when the embedded length changes from 42 cm to 52 cm. Also, use of (1×2) piles group instead of a single pile, the average rate of increase is about 6% less than the average rate of increase when change from (1×2) group to (2×2) pile group.Finally, when the number of piles changes from single pile to (1×2) piles group, and to (2×2) piles group, the average of increase of ultimate load is about 102.5% and 108.5% respectively.

Lateral Resistance of a Single Pile Embedded in Sand with Cavities

Laith Jawad Aziz; Mahmoud R. Mahmoud; Kais T. Shlash

Volume 30, Issue 15 , September 2012, , Page 2641-2663

https://doi.org/10.30684/etj.30.15.7

Abstract

The research presents an experimental study of the interaction between cavity and adjacent pile in sandy soil. Experimental studies were performed to investigate the effects of the ... Read More ...

One Parameter Composite Semigroups of Linear Bounded Operators in Strong Operator Topology of Schatten Class Cp

Samir Kasim Hassan; Al-Taie M; Al-Malki Anam; Al-Attar Abeer; Mustafa Khaleel Ismael; Fatema Ahmed Sadeq; Radhi A .Zboon; Jehad R.Kider; Samir K .Hassan; Hussain J. M. Alalkawi; Raad H. Majid; Rawaa A. Alomairy; Luma Abdul Ghani Zghair; Hadia Kadhim J.Al-Ogili; Assifa M. Mohamad; Abbas Sheyaa Alwan; Haider L. Aneed; Assim H Yousif; Salema Sultan Salman; Abbas Hussien Miry; Abduladhem A.Ali; Mohammed Zeki Al-Faiz; Sabah N. mahmood; Khansaa Dawood Selman; Shaymaa Tareq Kadhim

Volume 29, Issue 8 , June 2011, , Page 1463-1470

https://doi.org/10.30684/ etj.29.8.2

Abstract

For semigroups of linear bounded operators on Hilbert spaces, the problem of being in Cp , 0 Keywords Read More ...

Studying the Behavior of Axially Loaded Single Pile in Clayey Soil with Cavities

Shaymaa Tareq Kadhim

Volume 29, Issue 8 , June 2011, , Page 1619-1630

https://doi.org/10.30684/ etj.29.8.16

Abstract

This paper deals with the interaction between cavities and adjacent axially loaded pile in clayey soil using the three dimensional finite element program (ANSYS 11.0).Three dimensional ... Read More ...

Keywords = Single pile

Effect of Relative Density on Behavior of Single Pile and Piles Groups Embedded with Different Lengths in Sand

Abstract

Lateral Resistance of a Single Pile Embedded in Sand with Cavities

Abstract

One Parameter Composite Semigroups of Linear Bounded Operators in Strong Operator Topology of Schatten Class Cp

Abstract

Studying the Behavior of Axially Loaded Single Pile in Clayey Soil with Cavities

Abstract