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List of products by author: N. Allahverdi
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3D-Nonlinear Finite Element Analysis of Staged Shield-driven Tunnel Excavation with a Focus on Response of Segmental...
Abstract: The complex and dynamic nature of shield-driven tunnel excavation, staged construction, segmental lining installation process, and tail-void grouting necessitate using detailed numerical modeling for predicting ground behavior and response of segmental lining. In this paper, results of three-dimensional advanced finite element modeling using DIANA program are presented simulating shield-driven...
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Pile Foundation and Tunnel Interaction in Mechanized Shield Tunneling
Abstract: Tunneling operation in congested urban areas becomes more frequent as demand for further utiliz-ing underground spaces grows. In urban settings, it is not uncommon for tunnel designers to plan a tunnel route in close proximity to other structures to satisfy other competing objectives like rais-ing the alignment to reduce excavation volume. Setting the alignment close to existing structures...
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Seismic Performance of Deep Underground Vertical Shafts
Abstract: In a dense urban landscape underground space has been increasingly utilized and transformed into complex networks of tunnels and shafts to facilitate transport of people and material. These underground structures are essential part of infrastructure and any disruptions to their functionality can result in high economic losses. This is even more critical in extreme events like earthquakes. This...
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