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An application of reinforced concrete vaulted slabs and rafts in deep excavation works

Grzegorz Kacprzak Tomasz Daktera Andrzej Stańczyk Urszula Tomczak Seweryn Bodus Michał Werle

Archives of Civil Engineering | 2021 | vol. 67 | No 3 | 61-75 | DOI: 10.24425/ace.2021.138043

Słowa kluczowe metro station construction urban construction construction stages soil-structure interaction diaphragm wall vaulted slab deep excavation

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Abstrakt

The overall efficiency of a construction of a deep excavation urban project does not depend only on the duration of the construction but also on its influence on the urban environment and the traffic [9, 10]. These two things depend greatly on the excavation method and the construction stages defined during the design process. This paper describes the construction stages of three metro stations (two stations in Warsaw and one in Paris) and discusses their advantages and disadvantages including among other things its impact on neighbouring infrastructure and the city’s traffic. An important conclusion drawn from this analysis is that the shape of the slabs used can considerably affect the design and the construction stages. For example, a vaulted top slab allows an almost immediate traffic restoration and a vaulted bottom raft allows a much shorter dewatering period.

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Bibliografia

[1] A. Stańczyk, “Doświadczenia z budowy stacji metra "Ratusz" i "Marymont" w Warszawie”, Inżynieria i Budownictwo, 5, pp. 244–247, 2008.
[2] Daktera, T., Bourgeois, E., Schmitt, P., Jeanmaire, T., Delva, L., & Priol, G., “Design of deep supported excavations: comparison between real behavior and predictions based on the subgrade coefficient method”, Proceedings of the XVII European Conference on Soil Mechanics and Geotechnical Engineering, pp. 2608–2615, 2019.
[3] Daktera T. “Amélioration des méthodes de calcul des écrans de soutènement à partir du retour d'expérience de grands travaux récents » PhD Thesis, Univ Gustave Eiffel, (to be published) 2020.
[4] M. Graff, “Subway in Warsaw”, Transport systems, 12, pp. 25–35, 2018.
[5] K.F. Unrug, “Shaft design criteria”, International Journal of Mining Engineering, 2, 141–155, 1984.
[6] ILF CONSULTING ENGINEERS, “Design and construction of the underground line II from “Rondo Daszyńskiego” station to the “DworzecWileński” station in Warsaw”, 2010.
[7] M. Mitew-Czajewska, “Geotechnical investigation and static analysis of deep excavation walls – a case study of metro station construction in Warsaw”, Ann. Warsaw Univ. Life Sci. – SGGW, Land Reclam. 47 (2), pp. 163–171, 2015. http://doi.org/10.1515/sggw-2015-0022
[8] A. Sieminska-Lewandowska, “Budowa obiektu a obudowa wykopu – niełatwe zależności”, Nowoczesne Budownictwo Inżynieryjne, marzec kwiecień, pp. 64–71, 2010.
[9] A. Siemińska-Lewandowska, “Głębokie wykopy. Projektowanie i wykonawstwo.”, WKŁ, Warszawa, 2010.
[10] G. Kacprzak, S. Bodus, “The modelling of excavation protection in a highly urbanised environment”, Technical Transactions, Vol. 1, pp. 133–142, 2019. https://doi.org/10.4467/2353737XCT.19.009.10049

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Autorzy i Afiliacje

Grzegorz Kacprzak

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Tomasz Daktera

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Andrzej Stańczyk

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Urszula Tomczak

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Seweryn Bodus

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Michał Werle

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Warsaw University of Technology, Faculty of Civil Engineering, Al. Armii Ludowej 16, 00-637 Warsaw, Poland
Soletanche Bachy International 280 Avenue Napoléon Bonaparte, 92500 Rueil Malmaison, France
Warbud S.A.