Original scientific paper The ongoing Marmaray Project is one of the largest transportation infrastructure projects in the world. The total length of the over ground and underground Marmaray project is 76,7 km. The first part of project is the Bosphorus Crossing (BC1) with a length of 13,6 km. The BC1 project contains the construction of three bored tunnels and immersed tunnel under the Istanbu...

Durability problem of reinforced concrete for underground structures is a hot issue in the field of structural engineering. For underground structures, the prediction of structural service life and methodology for durability design are needed to estimate structural durability. Taking the case of Xiamen Xiang’an subsea tunnel as background, which is designed to meet the requirement of 100-year s...

This paper presents a systemic decision support approach for safety risk analysis under uncertainty in tunnel construction. Fuzzy Bayesian Networks (FBN) is used to investigate causal relationships between tunnel-induced damage and its influential variables based upon the risk/hazard mechanism analysis. Aiming to overcome limitations on the current probability estimation, an expert confidence i...

Realistic 3D simulations of the tunnelling process are increasingly required to investigate the interactions between machine-driven tunnel construction and the surrounding soil in order to provide reliable estimates of the expected settlements and associated risks of damage for existing structures, in particular in urban tunnelling projects. To accomplish the step from large-scale computational...

Abad ke-21 merupakan masa perubahan besar. Dengan berkembangnya teknologi yang sedemikian pesatnya menuntut mahasiswa harus mampu berpikir kritis dan memecahkan masalah secara efektif, kreatif, inovatif, komunikatif, kolaboratif. Salah satu cara untuk menjawab tantangan ini adalah dengan mengubah peran dosen dari pemberi informasi menjadi fasilitator berbagi pengetahuan pelatihan keterampilan p...

The Hy-V project will conduct the first-ever mode-transition flight-test for a dual-mode hypersonic scramjet, which will occur at approximately 90,000 feet onboard a sounding rocket. At altitude, atmospheric conditions and inlet flow speed will match the flow conditions simulated in the UVA Aerospace Research Laboratory (ARL) hypersonic wind tunnel. Geometric similarity between the wind tunnel ...

Purpose: The main propose of this study is determining appropriate knowledge acquisition techniques to extract tunnel expert’s knowledge. Design/methodology/approach: A porposive sampling method was used and data were collected via face-to-face interview based on a validated Knowledge Acquisition Questionnaire (KAQ). A total of 33 experts in tunnel industry who were presented by Iranian Tunnel ...

There are various methods for the analysis of the interactional behavior of the surrounding land, using the lining structure which is the most common method of deigning lining structure tools for the static loads by using the hyper static methods. In recent years, there has been a question that depicts whether this method provides the best results in designing the tunnel structure or not.Due to...

In the present paper we give account of an effort that aimed at the unification of the whole geometric preprocessing that preceded the wind tunnel readings with a realistic airplane wing model in a recent research project. This preprocessing includes the automated generation of the CAD models which were used for the manufacturing of the multi-parted wing-fuselage configuration and the generatio...

To explore the influence of shield construction on stress tunnels surrounding rock and linings in deep, high groundwater low-permeability soft strata, a 3D coupled hydro-mechanical model low permeability mudstone tunnel was established with ABAQUS, based effective principle Mohr–Coulomb elastoplastic constitutive model, taking Bailuyuan Tunnel Hanjiang to Weihe River Valley Water Diversion Proj...