Wyniki wyszukiwania - BazTech

1

Feedback from the Grand Paris Express underground network on the rectification of tracks in service. Part 1

Wojnarowicz Michel, Knochenmus Grant

Inżynieria Morska i Geotechnika

|

2025

|

nr 2

47--56

EN

The Grand Paris Express - a public transportation initiative encompassing four automated rapid transit lines surrounding Paris, in conjunction with the extension of two existing lines connected to the Paris Metro and RER. The total length of the new lines - 200 kilometres, and the construction of 71 new stations. The current estimated cost of the Grand Paris Express project - approximately 42 billion euros. An anticipated completion date - before the year 2030. The construction of the Arcueil-Cachan underground junction station requiring the erection of a bridge plate deck and the relocation of existing tracks on reinforced concrete beams cast in three tunnels within the railroad embankment with continuous train traffic.

PL

Grand Paris Express - projekt transportu publicznego obejmujący cztery automatyczne linie szybkiego tranzytu wokół Paryża i rozbudowę dwóch istniejących linii połączonymi z paryskim metrem i RER. Całkowita długość nowych linii - 200 km i budowa 71 nowych stacji. Szacowany obecnie koszt projektu Grand Paris Express - około 42 mid euro, Planowany termin ukończenia - przed 2030 rokiem. Budowa podziemnej stacji węzłowej Arcueil-Cachan wymagająca wykonania płyty pomostowej i przesunięcia istniejących torów na belkach żelbetowych wykonanych w trzech tunelach w nasypie kolejowym przy ciągłym ruchu pociągów.

2

Implementation of GPR and TLS data for the assessment of the bridge slab geometry and reinforcement

Cafiso S., Di Graziano A., Goulias D., Mangiameli M., Mussumeci G.

Archives of Civil Engineering

|

2020

|

Vol. 66, nr 1

297--308

EN

This paper presents a suggested approach for forensic investigation of bridge decks in which Ground penetrating radar (GPR) consisting of two antennas is used to assess the current conditions. The methodology was tested on a bridge deck in central Sicily. The acquired data were analyzed for identifying the asphalt overlay thickness, concrete cover depth and deck thickness and location of the rebar reinforcement. In the proposed approach for assessing bridge deck conditions the GPR survey was complemented with (i) a site investigation on layer thicknesses for calibration/verification purposes of the GPR response and (ii) a Terrestrial Laser Scanning system (TLS) to verify the bridge design slab curvature. The study shows that this methodology has significant merits on accurately assessing such bridge deck components when bridge design records are non-existing, and by using non-invasive methods such as laser scanning and GPR. The great advantage provided by the TLS technique is the possibility to obtain a 3D output model of the scanned element with the accuracy of the best topographic instruments in order to complement GPR data surveys for bridge inspection.

3

Drgania płyt mostowych pod inercyjnym obciążeniem ruchomym

Litewka P., Sygulski R.

Vibrations in Physical Systems

|

2000

|

Vol. 19

193--194

4

Drgania własne płyt mostowych metodą pasm skończonych

Litewka P., Sygulski R.

Vibrations in Physical Systems

|

1998

|

Vol. 18

191--192