Corrugated Steel Tunnels – Numerical Study Using Finite Element and Analytical Methods
Ahmed Abdel Rahman1, Mahmoud Awad allah2, Nashwa Soliman3   

1Ahmed Abdel Rahman, Professor of Geotechnical Engineering, Department of Civil Engineering, National Research Center, Cairo, Egypt.
2Mahmoud Awad allah,  Professor Assistant, Researcher, Department of Civil Engineering, National Research Center, Cairo, Egypt.
3Nashwa Soliman, Researcher Assistant, Ph D Candidate, Department of Civil Engineering, National Research Center Cairo, Egypt.

Manuscript received on September 16, 2020. | Revised Manuscript received on November 04, 2020. | Manuscript published on November 10, 2021. | PP: 235-244 | Volume-10 Issue-1, November 2020 | Retrieval Number: 100.1/ijitee.A81791110120| DOI: 10.35940/ijitee.A8179.1110120
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: Corrugated metal pipes, fabricated from galvanized steel, are among the most common structures employed to construct, culverts, underpasses, etc. in the world. Furthermore, the merits of this system over the traditional concrete structures are: lightweight structure, great strength relative to their mass, ease of transport and installation, and low cost. However, application of such construction system in Egypt is not commonly used yet, and many technical problems have been observed during and after construction. Consequently, this paper investigates the deformations around buried steel structures, axial forces and bending moments induced in structures due to back-filling and external loading. Furthermore, two case studies of buried steel projects have been presented in this paper. The first case study has been simulated using finite element method while the second one has been analyzed using analytical methods given in the literature and well-known codes of practice. Thus, an elaborated comparative study has been performed between finite element results and those obtained from analytical methods. 
Keywords: Steel tunnel, Finite element method, Buried structures, Deformations, Vertical displacement, Soil-structure interaction.