<p>In this research, the prospect of tunneling by cut and cover and New Austrian Tunneling Method (NATM) for underground metro rail system in Dhaka city was evaluated. Both conventional analysis and 2D finite element analysis using an elasto-plastic constitutive ...

Our research employs the concept of building information modelling (BIM) in environmental impact assessment for urban deep excavation projects. BIM is a relatively new technology that facilitates better information integration and management. Many engineering ...

After the collapse of the subway excavation in the Nicoll Highway, extensive in-situ investigations were carried out to identify causes of the accident. The results of detailed studies disclosed that lack of toe-in depth of the diaphragm wall into the stiff ...

<p>The increased use of underground space for transportation systems and the increasing complexity and constraints of constructing and maintaining above ground transportation infrastructure have prompted the need to develop this technical manual. This FHWA ...

<p>In the paper problems related with the execution of 29m deep excavation of Nowy Swiat Station (S11) of 2nd metro line inWarsaw are discussed. In the central section,Warsaw 2nd metro line runs below the center of the city (office and housing buildings and ...

<p>The Tugun Bypass Tunnel in Gold Coast, Australia was constructed using diaphragm walls with the top-down cut-and-cover method to allow simultaneous construction of an airport runway extension above the tunnel, whilst excavation of the tunnel continued underneath. ...

Construction of the Canada Line Rapid Transit Project is currently underway in Vancouver, BC. The 19 km rapid transit system includes 6.6 km of cut and cover box structure – one of the longest cut and cover rapid transit tunnels in Canada. The design for the ...

An effective seismic retrofit for a sidewall of a cut and cover tunnel has not been established yet. We develop a new method of seismic retrofit for the cut and cover tunnel. We call this “polymer isolation method.” In this method, we insert a thin wall made ...

Severe damage to six out of a total of 21 subway stations in the Kobe area during the 1995 Hyogoken-nanbu earthquake indicated a need for more attention to be given to the earthquake design of rectangular underground structures. This paper presents work undertaken ...

<p>For more than a century, Parsons Brinckerhoff (PB) has been instrumental in advancing state-of-the-art design and construction of underground structures, and the fields of seismic design and earthquake engineering are no exceptions. Almost three decades ...