Nonlinear instability analysis of long-span roofing structures: The case-study of Porta Susa railway-station

2016 ◽  
Vol 110 ◽  
pp. 48-58 ◽  
Author(s):  
A. Carpinteri ◽  
F. Bazzucchi ◽  
A. Manuello
Author(s):  
Liu Chuanping ◽  
Tianluan Liu ◽  
Jian Jia

<p>The main entrance of Chongqing West Railway Station adopts the non-landing compound arch with a span of 108m. In this paper, the nonlinear finite element theory is applied to analyze the bearing capacity and seismic ductility of the compound arch joints. Low frequency cyclic loading tests are performed on the 1/5 scale model. Based on the calculation and test results, a double beam structure and a section of steel truss are placed in the arch joints to bear the force of the arch. Moreover, the buckling-restrained brace (BRB) is placed in the lower part of the arch that enables most force directly transmit to the foundation of the arch. Unlike BRB’s common use as an inter-column support, it now acts as a buckling constraint support in the large earthquake. For instance, it can be yielded before the frame column to improve earthquake resistance. The research results indicate that the compound arch joint structure successfully accomplishes the seismic design goals of strong joints with weak component. Moreover, the study provides the theoretical basis and design reference for the application of BRB and long-span arch structures in high-speed railway station.</p>


2015 ◽  
Vol 791 ◽  
pp. 49-55
Author(s):  
Jolanta Słoniec

The paper presents the possibility of using cloud computing in project management. Cloud computing is the most rapidly growing field of IT and is used in many areas of business activity. Modern companies and organizations carry out many activities in the form of projects. Case study of two projects using cloud computing shows that it is possible and can be successful use of cloud computing in project management. The first project involved the transfer of ERP system in an international enterprise, and the other, a smaller one, involved the implementation of technical documentation in railway station reconstruction. The scope of the projects were different and the using of cloud computing were different. Finished projects testify to the fact that the project needs may impinge on the different ways to use cloud computing. And that the projects can be successful.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Wenzhuo Zhang

PurposeThis paper critically analyses the urban memory and heritage interpretation of postcolonial Harbin, a city in China that was founded by the Russians in 1898. It investigates the role and making of Russian colonial heritage in contemporary Harbin with a detailed case study of the Harbin Railway StationDesign/methodology/approachResearch methods include archival analysis, observation and semi-structured interview. In-depth interviews were conducted with local people, architect/urban planners and officials.FindingsLocal people of different generations with different backgrounds have different interpretations of the recently made colonial heritage of the Harbin Railway Station. The urban memory of Harbin has been consistently re-forming with both nostalgia and amnesia. Younger generations tend to regard the colonial heritage as their own heritage and a symbol of Harbin's cultural character without considering much about its related colonial history. In today's Harbin, colonial heritage as the “colonial past presencing” is more about a feel of the Europeanised space rather than the actual historical events of the period, and colonial heritage making becomes a tool for urban development and revitalisation at the institutional level. However, due to the paradigm shift in China's urban development, Harbin is facing new challenges in dealing with its colonial heritage.Originality/valueHarbin is an under-researched case in terms of urban heritage studies. This paper offers a new entry point for understanding the westernisation and colonial heritage making in the contemporary China more deeply and thoroughly and helps to see the trend of China's urban development more clearly.


2021 ◽  
Author(s):  
Charles John George ◽  
Cibu Varghese ◽  
Faris Ragheb Kamal

Abstract Fixed offshore platforms are normally provided with landing platforms that enable berthing of supply vessels, crew boats etc. These landing platforms or ‘Boat landings’ are energy absorption structures provided on substructures (jackets) of offshore platforms. Their purpose is to facilitate personnel access from vessel to platforms for performing various tasks including manning the platform, its maintenance etc. Vessel also approach the platforms for providing supplies in case of a manned platform and for providing bunkers, spares etc. As such, boat landing is an integral part of offshore platform and its design and installation becomes equally important. They are preferably located at leeward direction as far as practical, to avoid accidental vessel drift into the platform. For smaller standalone offshore platforms installed with Heavy Lift Crane Vessels, boat landing is installed after the jacket is piled to seabed. Since sequence of installation of boat landing is prior to that of Topside, such installations are straightforward and without obstructions from the Topside. For the bigger accommodation, production, process platforms located in super-complex (or standalone) with topsides installed by float over method, boat landings sometimes are in the wide float over barge slots. In such cases, installation of boat landing becomes very critical due to the post installation after the Topside and associated obstructions from the Topside. This is similar or more critical than a boat landing removal / refurbishment activity carried for a brownfield project. This paper explores the challenges and associated steps adopted to execute the safe installation of these critical structures underneath a newly installed Topside. This case study details the installation of ∼300mt boat landings onto recently installed Greenfield platforms in Arabian Gulf using efficient rigging, suiting the EPC Contractors’ crane assets.


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