Numerical modeling of single closed and open-ended pipe pile embedded in dry soil layers under coupled static and dynamic loadings

Duaa Al-Jeznawi; Ismacahyadi Bagus Mohamed Jais; Bushra S. Albusoda; Norazlan Khalid

doi:10.1515/jmbm-2022-0055

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Publication Date

Sat Jan 01 2022

Journal Name

Journal Of The Mechanical Behavior Of Materials

Volume

31

DOI

10.1515/jmbm-2022-0055

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Numerical modeling of single closed and open-ended pipe pile embedded in dry soil layers under coupled static and dynamic loadings

numerical modeling

coupled static–dynamic load

plug soil

frictional resistance

shear stress reversal

Duaa Al-Jeznawi

Ismacahyadi Bagus Mohamed Jais

Bushra S. Albusoda

Norazlan Khalid

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AbstractFor the design of a deep foundation, piles are presumed to transfer the axial and lateral loads into the ground. However, the effects of the combined loads are generally ignored in engineering practice since there are uncertainties to the precise definition of soil–pile interactions. Hence, for technical discussions of the soil–pile interactions due to dynamic loads, a three-dimensional finite element model was developed to evaluate the soil pile performance based on the 1 g shaking table test. The static loads consisted of 50% of the allowable vertical pile capacity and 50% of the allowable lateral pile capacity. The dynamic loads were taken from the recorded data of the Kobe earthquake. The current numerical model takes into account the material non-linearity and the non-linearity of pile-to-surrounded soil contact surfaces. A lateral ground acceleration was adapted to simulate the seismic effects. This research emphasizes modeling the 1 g model by adapting MIDAS GTS NX software. This will, in turn, present the main findings from a single pile model under a combined static and dynamic load. Consequently, the main results were first validated and then used for further deep investigations. The numerical results predicted a slightly higher displacement in the horizontal and vertical directions than the 1 g shaking table. The shear stress–shear strain relationship was predicted. Positive frictional resistance for the closed-ended pile was captured during the first 5 s when low values of acceleration were applied and, consequently, the pile resistance decreased and became negative. Internal and external frictional resistance was captured for the open-ended pipe pile. Overall, frictional resistance values were decreased with time until they reached the last time step with a minimum value. As a result, the evaluation of the current study can be used as a guide for analysis and preliminary design in engineering practice.

Publication Date

Thu Aug 01 2019

Journal Name

مجلة العلوم الاقتصادية والإدارية

Improving" Jackknife Instrumental Variable Estimation method" using A class of immun algorithm with practical application

Redha

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Improving" Jackknife Instrumental Variable Estimation method" using A class of immun algorithm with practical application

Publication Date

Sat Dec 01 2018

Journal Name

Indian Journal Of Natural Sciences

Determination of the Electron Density Variation for Ionosphere Layer Over Iraqi Zone Using IRI Model

Asma’a

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KA Hadi, AH Asma’a, IJONS, 2018 - Cited by 1

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Publication Date

Mon Jan 01 2024

Journal Name

Baghdad Science Journal

Molecular Identification of Methylorubrum extorquens using PCR-Amplified MxaF Gene Fragments as A Molecular Marker

gas chromatography

Methanol dehydrogenase

Methylorubrum extorquens

Methylotrophs bacteria

MxaF gene

Anwar A.

Asaad M.R.

Zeenah Weheed

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Methylotrophs bacteria are ubiquitous, and they have the ability to consume single carbon (C1) which makes them biological conversion machines. It is the first study to find facultative methylotrophic bacteria in contaminated soils in Iraq. Conventional PCR was employed to amplify MxaF that encodes methanol dehydrogenase enzyme. DNA templates were extracted from bacteria isolated from five contaminated sites in Basra. The gene specific PCR detected Methylorubrum extorquens as the most dominant species in these environments. The ability of M. extorquens to degrade aliphatic hydrocarbons compound was tested at the laboratory. Within 7 days, gas chromatographic (GC) studies of remaining utilize

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Publication Date

Mon Jun 30 2025

Journal Name

Scripta Medica

Case Report: A Rare Presentation of Sigmoid Volvulus During Pregnancy With an Integrative Postoperative Approach

Colon

sigmoid

Intestinal volvulus

Pregnancy

Surgical procedures

operative

Emergency

Acute care surgery

Pregnancy outcome

Zahraa

Sabah

Hussein

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Publication Date

Mon Jan 15 2024

Journal Name

Mammalia

Brandt’s Hedgehog, Paraechinus hypomelas (Brandt, 1836), new to the mammal fauna of Iraq

biogeography

erinaceomorpha

insectivores

range expansion

wild mammals of Iraq

Omar F.

Soran H.

Soma I.

Boris

Gholam H.

Korsh

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AbstractDue to the wide distribution through the Iranian Plateau, especially in its western parts adjacent to Iraq’s northeastern borders, the occurrence of Brandt’s Hedgehog <italic>Paraechinus hypomelas</italic> (Brandt, 1836) was suspected, but no confirmed records were made. In 2021–2023, several sightings were obtained during <italic>in situ</italic> surveys in the Bamo-Khoshk Mountains in the Kurdistan region-northeastern Iraq which confirm the first occurrence of this species in the country.

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(1)

Publication Date

Sat Jan 01 2022

Journal Name

Craniomaxillofacial Research & Innovation

Partial Bone Necrosis Following Sagittal Split Ramus Osteotomy: Report of a Complicated Orthognathic Jaw Surgery

Haider

Ammar S.

Hussein A.

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Study Design

Case Report.

Objective

To present a case of a previous complicated mandibular orthognathic surgery that aimed to setback the mandible in a female cleft lip and palate (CLP) patient, which led to bone necrosis on one side with subsequent severe mandibular deviation and facial asymmetry. We additionally reviewed the previous reports of similar complications, the pathophysiology and the factors that could lead to this dreadful result.

Method

A 27-year-old female patient presented with a severe dentofacial deformity secondary to a complicated bilateral sagittal spli

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Publication Date

Sun Jan 01 2017

Journal Name

Journal Of Cosmetics, Dermatological Sciences And Applications

Topical Therapy of Acute Cutaneous Leishmaniasis Using Zinc Sulphate Solution 25% versus Podophyllin Solution 25%

Khalifa E.

Adil A.

Zinah A. A.

Banaz A.

Wasnaa S.

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(6)

Publication Date

Tue Nov 01 2022

Journal Name

Bulletin Of National Institute Of Health Sciences

Using of Propolis on the treated rats induced with Polysystic ovarian syndrome by Litrozol drug

Propolis

ovaries

PCOS

lipid profile

Shaima R.

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Publication Date

Sat Feb 01 2020

Journal Name

Iop Conference Series: Materials Science And Engineering

Using GIS Technique for evaluating water quality of Abu Zarag marsh during the flood season

Ahmed Zamel

Nawar O.A.

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AbstractThis research deals with the most important heritage in Iraq, which are the Iraqi marshes, especially Abu Zarag marsh in Al-Nasiriyah city south of Iraq. The research is divided into two parts. The first part deals with evaluating the water quality parameters of Abu Zarag marsh for the period from December 2018 to April 2019 which is the flooding season. The parameters are Temperature, pH, Electrical Conductivity, Total Dissolved Solids, Alkalinity, Total Hardness, Turbidity, Dissolved Oxygen, Sulfate, Nitrate. The second part is a comparison between the water quality parameters during the recent period with the same period during the previous years from 2014 to 2019. The results are ... Show More

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Publication Date

Tue Mar 12 2019

Journal Name

Lubricants

Absorption Wavebands for Discriminating Oxidation Time of Engine Oil as Detected by FT-IR Spectroscopy

infrared spectroscopy

engine oil

thermal oxidation

oil life

Ali Mazin

Torrey

Poopalasingam

Dennis

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Fourier Transform-Infrared (FT-IR) spectroscopy was used to analyze gasoline engine oil (SAE 5W20) samples that were exposed to seven different oxidation times (0 h, 24 h, 48 h, 72 h, 96 h, 120 h, and 144 h) to determine the best wavenumbers and wavenumber ranges for the discrimination of the oxidation times. The thermal oxidation process generated oil samples with varying total base number (TBN) levels. Each wavenumber (400–3900 cm−1) and wavenumber ranges identified from the literature and this study were statistically analyzed to determine which wavenumbers and wavenumber ranges could discriminate among all oxidation times. Linear regression was used with the best wavenumbers and wavenumber ranges to predict oxidation time.

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