Civil Engineering Commons^™

Experimental Study On Fiber Reinforced Concrete (Frc) Beams With Splices, Mohie Eldin Salah Shoukry, Ahmed Mokhtar Tarabia, Nabil Youssef Nabil

Journal of Engineering Research

This paper presents the results of an experimental study involving nine simply supported beams featuring lap-spliced bars within the constant moment zone. All beams shared identical reinforcement details, including three longitudinal reinforcement bars (12 mm diameter) and two top reinforcement bars (8 mm diameter) for shear stirrup hanging. The lap-spliced specimens were created with a splice length of thirty times the bar diameter (360 mm). The study focused on two key parameters: the fiber content of hooked-end steel fibers used in the concrete mix and the presence of stirrups in the lap-splice region. The hooked-end steel fiber used was with …

Innovation In Egyptian Linear Construction Projects: Enablers, Obstacles, And Suggested Improvements, Saeed Ahmed Elshinawy, Mohammed Elsayed Elsharkawy Assis. Prof., Adel Ibrahim Eldosouky Emeritus Professor

Journal of Engineering Research

Abstract- This research aims to investigate the obstacles, enablers, and suggested improvements for innovation in the Egyptian linear construction projects. The study is motivated by the need to understand the dynamics of innovation within these projects and identify practical approaches to overcome obstacles to innovation.

Owners, contractors, and consultants involved in linear construction projects constituted the target population of the study. A structured questionnaire was used to collect data from a representative sample of 70 participants.

It is found that time and budget constraints, along with traditional tendering and procurement methods were significant obstacles to innovation, while technological and technical …

Modelling Techniques For Slab Track Systems, Mohamed Hafez Fahmy Aly, Islam Mahmoud Abou El-Naga, Ahmed Abdul Hay Soliman, Muhammad Ahmad Diab

Journal of Engineering Research

The railway slab track has replaced the ballast material in the classical ballasted track with reinforced concrete slab or asphalt layer to cope up with the increasing axle loads, train high-speeds, and to reduce overall maintenance cost. This paper aims to investigate the linear and nonlinear behavior of the most common slab track systems (BÖGL, Shinkansen, and RHEDA 2000) using American (AREMA) loads for different soil types to recommend the most suitable analysis type for each component of the slab track systems. Slab track Finite Element models have been built using Midas GTS NX software. The geometric model for each …

Modeling Of Equilibrium Shoreline Of Headland Bay Beaches, Mohamed Ahmed Elmarakby, Ahmed Elshinnawy, Bakenaz A. Zeidan

Journal of Engineering Research

Engineering tools for predicting a long-term reaction of beaches include equilibrium beach formulations. They are used to assess how human interference (protection works, breakwaters, ports etc.) has affected the shoreline reaction since they Specify the final orientation of a beach on a time scale of years. One of the equations for determining the Static Equilibrium Planform (SEP) of Headland Bay Beaches (HBBs) that can be found in the literature is the Parabolic Bay Shape Equation (PBSE). The placement of the down-coast control point (P_o), which is the down drift limit from which the PBSE is applied, has a …

Ground Settlements Due To Quad Water Tunnel Construction, Marawan M. Shahien M. Shahein, Ehab Ahmed Khalil E.Khalil, Ahmed F. Abd El Kader A. Abd El Kader, Mahmoud Abdulnasser Hodeab M.A.Nasser

Journal of Engineering Research

Construction of a tunnel under an existing one poses significant geotechnical challenges due to the potential surface and subsurface settlements caused by the new tunnel construction and its impact on the existing tunnel, adjacent buildings, and facilities. The complexity intensifies when multiple adjacent tunnels need to be constructed, such as twin, triplet, quad, or more, as the construction of each tunnel affects the others. This interaction depends on various factors, including the horizontal distance between each tunnel (pillar width), the tunnel's depth and vertical position relative to the existing tunnel (pillar depth), and their influence on surface and subsurface settlement …

Exemplary Studies On The Torsional Response Of Single Pile In Contaminated Sand, Ahmed Nasr, Waseim Azzam, Nada Ramadan

Journal of Engineering Research

Deep foundations, including piles, are employed in types of coastal soil because the soil in such regions may be subjected to several variables that alter the engineering features of the soil, like oil contamination. Together with the loads caused by supported superstructures, the pile foundations may also be susceptible to torsional loads from eccentric, horizontal loads brought on by winds, earthquakes, ship accidents, and waves. Tests have been conducted in this laboratory investigation to examine the behavior of piles under torsional load (T) in polluted sandy soil. Also, tests investigated how the Lp/Dp ratio affected the piles' bearing capacity. Details …