TUBITAK 1001 - Arching mechanism in soil embankments supported by high modulus columns

Format: On Campus
Number of Interns (Quota): 2
Duration of the Internship: 8 Weeks
Start Date: 16 June 2025
End Date: 8 August 2025
Application Deadline: 15 April 2025
Project Supervisor: Prof. Dr. S. Feyza Çinicioğlu

Project Title:
TUBITAK 1001 - Arching mechanism in soil embankments supported by high modulus columns"

Project Description:
In transportation networks and structures (such as embankments, tunnels, retaining walls, pipelines, etc.), the key characteristic of their mechanical behavior is the arching phenomenon. Arching, which governs the load distribution between structural elements and soil of different stiffness, occurs when there is relative movement between the structural elements and the soil.

The main objective of this project is to understand the arching behavior in soils, identify the primary factors controlling this behavior, and establish a means to calculate it based on these factors.

Systems where piles or high-modulus columns are used beneath embankments are generally called “Conventional pile-supported embankments” (CPS). CPS systems are formed by installing piles at specific intervals within soft soil, followed by the construction of the embankment on top. The embankment load is transferred to the piles via the arching mechanism that develops within the granular fill, and as a result, the soft soil carries only a small portion of the load. In our laboratory, a multi-trapdoor physical model is employed in experimental studies to examine the arching mechanism. High-resolution photographs are taken continuously and analyzed using Particle Image Velocimetry (PIV). From these analyses, embankment deformations are determined, and arching structures are identified and monitored accordingly.

Project Tasks:
You will work with a physical test model that examines the mechanical behavior of granular materials (Demanding physical work to fill and empty the test device with soil). You will help with the calibration and use of ground pressure sensors and data loggers. You will have the opportunity to work with new and interesting techniques, such as Particle Image Velocimetry (PIV), which can analyze the deformation and general behavior of the ground through high-speed images.

Requirements:
Enrollment in an undergraduate program in Civil or Mechanical Engineering. You should be aware that the project work requires considerable physical effort, proper attention, and care.

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