The Dubai Metro light rail scheme is a flagship project in the United Arab Emirates which is currently one of the largest civil engineering projects under construction and, when completed, will be the longest fully automated rail system in the world. The first section of the rail system is due to be opened in September 2009. This paper describes the scheme outline and contractual setup for the viaduct design and discusses the design and construction of the viaduct substructure. In particular, the design methodologies used for the piled foundations, single reinforced concrete columns and prestressed concrete pier heads are discussed as well as the design of elastomeric bearings that were used extensively for most of the viaduct spans. Seismic loading governed the design of many of the foundations and the seismic analysis and design methodology adopted is discussed, together with specific reinforcement detailing requirements. Railstructure interaction analysis and design is also covered. Other critical design issues resolved included the fatigue performance of cranked reinforcement and the treatment of the onerous construction loading from overhead gantries used to erect the precast deck segments. Bridge Engineering 162 Issue BE2 Design of the Dubai Metro light rail viaducts-substructure Smith N Hendy

No abstract

<p>The Klang Valley Mass Rapid Transit (KVMRT) rail system is a central part of the development of the Kuala Lumpur public transportation network with MRTC the project owner and MMC Gamuda KVMRT (PDP SSP) the Project Delivery Partner. The first MRT line stretches from Sungai Buloh to Kajang (SBK) with a length of 51km, while the second line from Sungai Buloh to Serdang to Putrajaya (SSP) has a length of 52km. The majority of both lines is supported on viaducts which weave their way through the urban environment. This paper presents the development of the viaduct design for the SBK Line and the lessons learnt that were incorporated into the SSP Line viaduct design. The process of optimising the design to meet the requirements for both the SBK and SSP Lines will be discussed while some key technical aspects of the viaduct design will be highlighted.</p>

No abstract

<p>Completed in 2019, Jakarta’s first MRT system is providing much-needed relief to the congested road network of this city and to its population of around ten million people. Constructing infrastructure in a congested, developed urban area provides substantial challenges for designers, the contractor and client. This paper considers the design of the viaducts and stations within one of the MRT packages, and how site constraints impacted the ultimate solution. Also discussed is the impact of onerous seismic design criteria such as those specified for this project. High serviceability ground accelerations challenged the designer to introduce flexibility into the structural response, whilst simultaneously providing necessary resistance in the ultimate case.</p>