Search & filter
Search & filter
Abstract: The Frejus Tunnel is part of the international highway between Italy and France. The tunnel links the two cities of Bardonecchia (Italy) and Modane (France). The total length is 12.89 m with a maximum overburden of 1.750 m. It is one of the main trans-Alpine transport routes across the France-Italian border, serving almost the 80% of the commercial traffic between the two Nations. From April...
Abstract: Tunnel has been applied widely in the world's major underground transportation engineering. In recent years, earthquake disasters frequently occurred in whole world, such as Kobe earthquake in Japan in 1995 and Wenchuan earthquake in China in 2008, caused damage to underground structure facility. Therefore, seismologists around the world pay attention to seismic studies of underground...
Abstract: In the whole construction-operation process of shield tunnel, synchronous grouting is utilized to control the ground loss. However, the grouting pressure caused by synchronous grouting may lead to relatively unfavourable internal force and deformation response on tunnel structure. Furthermore, it may cause a series of adverse consequences such as cracking and leakage. In order to reduce the...
Abstract: The beam spring model (BS model) has better simulation results on the shield tunnel structure than the equivalent stiffness homogenization ring model (ESHR model). For the structure with longitudinal joints governed by large bending moment, the BS model can partly simulate the deformation characteristics of the structure caused by the joints. However, the BS model still has certain limitations...
Abstract: For traditional immersed tunnel construction method, segments are clamped together temporarily by longitudinal prestressing cables which are later cut off at each of the joints after the tunnel element has been placed. This form of tunnel element can be called as the flexible scheme and has the advantages of deforming more freely with the ground and reducing the internal force produced in the...
Abstract: The quasi-rectangular segmental tunnel lining is a new alternative for shield driven tunnels in urban railway transportation. It is firstly designed and employed in Metro Line 3 in Ningbo, China for its applicability in high density urban areas. The bearing capacity of this new structure is of great importance during its utilization period, as it is related to the safety reserve. In this study,...