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List of products by author: T. Iftimie
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Pipes arch method for a railway tunnel under highway A1
Abstract: The paper presents the design and research efforts made to successfully construct a rail tunnel which under crossing oblique (60˚) a highway with six-lane and with as little as 2,70 - 3.30m of cover. Geotechnical parameters, tunnelling method selection, construction phases and three-dimensional finite element analyses with ground response and monitoring are discussed. The selected method was...
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Study of solutions for realization of portals in difficult grounds
Abstract: The first part of the paper is an overview on the technical and architectural aspects of tunnel portals design with a comparison of different solutions, from point of view of materials and technologies used and of their evolution in time. The second and main part of the paper is dedicated to the study of the new solutions used for realization of railway tunnel portals in difficult and unstable...
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”Cut and Cover” tunnel in swelling soil
Abstract: The paper presents the design and research efforts made for the carrying out of a competitive and optimal solution for Turdas tunnel. The tunnel passes through alluvial deposits with clays and powders at the upper part, sand and gravel with water in the middle part and swelling clay marl at the lower part. Two methods and structural solutions ”Cut and Cover” and ”Cover and Cut”, are analyzed...
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