Elastoplastic structural analysis of the Paderno d’Adda bridge (Italy, 1889) based on Limit Analysis

• Autorzy: Rosalba F. , Giuseppe C. , Egidio R.

Warianty tytułu

PL

Sprężysto-plastyczna analiza konstrukcji mostu Paderno d’Adda (Włochy, 1889) oparta na analizie granicznej

• Języki publikacji: EN

Abstrakty

EN

The Paderno d’Adda bridge is a marvellous historical iron arch bridge that was built in 1889. It allows connecting the provinces of Lecco and Bergamo across the Adda river, between Paderno d’Adda and Calusco d’Adda, near Milano, northern Italy. The bridge was designed for railway needs and its use is two-fold: a railway track is located in the inner deck of the upper continuous beam; automotive traffi c runs on top of it. Today, after 123 years of continuous duty, the viaduct is still in service, with trains crossing at slow speed and alternated one-way road traffi c restricted to no heavyweight vehicles. Despite these duties, the bridge seems to have suffered from limited maintenance. With the final purpose of elaborating a safety assessment of the structure, an inelastic structural analysis of the viaduct is performed, based on a finite element model that takes into account a perfect elastoplastic behaviour of the various structural members and is apt to comply with typical principles of Limit Analysis. Specifi cally, the critical load multiplier and relevant collapse mode are investigated, for different static loading conditions on the bridge. Also, the characteristic nonlinear load/displacement response curves of the bridge are traced by incremental analyses up to the true limit load and the various critical members of the structure are identified. A further intention of this work consists in promoting interest at the international level on the Paderno d’Adda bridge, as a beautiful, living industrial monument of the scientific and technological developments of that time, by referring particularly to its present and future destinations.

PL

Most Paderno d'Adda jest niezwykłym, zabytkowym żeliwnym most łukowym , który został zbudowany w 1889 roku. Umożliwia on połączenie prowincji Lecco i Bergamo nad rzeką Adda, między Paderno d'Adda i Calusco d'Adda, niedaleko Mediolanu, w północnych Włoszech. Most został zaprojektowany dla potrzeb kolejowych, a jego zastosowanie jest dwojakie linia kolejowa znajduje się w wewnętrznym pokładzie górnej belki ciągłej, ruch motoryzacyjny powyżej. Ocena bezpieczeństwa konstrukcji: nieelastyczna analiza strukturalna wiaduktu wykonywana została na podstawie modelu skończonego elementu, który bierze pod uwagę doskonałe elastoplastyczne zachowanie poszczególnych elementów konstrukcyjnych.

Słowa kluczowe

EN

Historical iron arch bridge; Non-linear; FEM model; Elastoplastic structural analysis; Limit Analysis; Collapse load multiplier; collapse model

PL

zabytkowy stalowy most łukowy; nieliniowy model w MES; sprężysto-plastyczna analiza; konstrukcji, analiza graniczna; mnożnik obciążenia; forma utraty stateczności

• Wydawca: Zarząd Główny Stowarzyszenia Konserwatorów Zabytków
• Czasopismo: Wiadomości Konserwatorskie
• Rocznik: 2013
• Tom: Nr 34
• Strony: 28--35
• Opis fizyczny: Bibliogr. 15 poz., il., tab.

Twórcy

autor

Rosalba F.

• Università di Bergamo, Facoltà di Ingegneria (Dalmine), Dipartimento di Progettazione e Tecnologie, viale G. Marconi5, I-24044 Dalmine (BG), Italy

autor

Giuseppe C.

• Università di Bergamo, Facoltà di Ingegneria (Dalmine), Dipartimento di Progettazione e Tecnologie, viale G.Marconi 5, I-24044 Dalmine (BG), Italy
• Politecnico di Milano, Dipartimento di Ingegneria Strutturale, piazza L. da Vinci 32, I-20133 Milano, Italy

autor

Egidio R.

• Università di Bergamo, Facoltà di Ingegneria (Dalmine), Dipartimento di Progettazione e Tecnologie, viale G. Marconi 5,I-24044 Dalmine (BG), Italy

Bibliografia

• [1] Società Nazionale delle Offi cine di Savigliano (1889). Viadotto di Paderno sull’Adda (ferrovia Ponte S. Pietro-Seregno). Tip. e Lit. Camilla e Bertolero, Torino.
• [2] Nascè V., Zorgno A.M., Bertolini C., Carbone V.I., Pistone G., Roccati R. (1984). Il ponte di Paderno: storia e struttura. Conservazione dell’architettura in ferro. Restauro, XIII (73-74).
• [3] Ferrari R. (2006). Sulla concezione strutturale ottocentesca del ponte in ferro di Paderno d’Adda secondo la teoria dell’ellisse d’elasticità. Laurea Thesis in Building Engineering, Advisor E. Rizzi, Università di Bergamo, Facoltà di Ingegneria, I-24044 Dalmine (BG), Italy, 228 pages, December 2006.
• [4] Ferrari R., Rizzi E. (2008). On the theory of the ellipse of elasticity as a natural discretisation method in the design of Paderno d’Adda Bridge (Italy), in Proc. of 6th Int. Conf. on Structural Analysis of Historic Construction (SAHC08), D. D’Ayala and E. Fodde (Eds.), Bath, UK, 2-4 July, 2008, CRC Press, Taylor & Francis Group, Vol. 1, 583-591.
• [5] Facheris M. (2009). Analisi morfologica e modellazione per elementi fi niti della pila sull’arco del ponte di Paderno d’Adda. Laurea Thesis in Building Engineering, Advisor E. Rizzi, Co-Advisor R. Ferrari, Università di Bergamo, Facoltà di Ingegneria, I-24044 Dalmine (BG), Italy, 125 pages, September 2009.
• [6] Ferrari R. (2009). Analisi strutturale degli elementi portanti del ponte di Paderno d’Adda. Laurea (Master) Thesis in Building Engineering, Advisor E. Rizzi, Università di Bergamo, Facoltà di Ingegneria, I-24044 Dalmine (BG), Italy, 108 pages, September 2009.
• [7] Ferrari R., Facheris M., Rizzi E. (2010). Structural modeling of the piers of the Paderno d’Adda Bridge (1889, Italy), in Proc. of 34th IABSE Int. Symposium on Bridge and Structural Engineering, IABSE Reports, Vol. 97, Venice, Italy, 22-24 September 2010, Book of Abstracts, pp. 778–779; CD-ROM Proceedings, Paper A-634, 8 pages.
• [8] Ferrari R., Facheris M., Rizzi E. (2010). Structural analysis of the Paderno d’Adda bridge (Italy, 1889), in Proc. of 7th Int. Conf. on Structural Analysis of Historic Constructions (SAHC10), Eds. Xianglin Gu and Xiaobin Song, Shanghai, China, 6-8 October 2010, Advanced Materials Research, Vols. 133–134 (2010), 459-465.
• [9] Ferrari R., Rizzi E. (2011). FEM modelling of the Paderno d’Adda bridge (Italy, 1889), in Proc. of Structural Engineers World Congress (SEWC 2011), Como, Italy, 4-6 April 2011, Book of Abstracts p. 159; CD-ROM Proceedings, Paper 210, 9 pages.
• [10] Ferrari R., Rizzi E. (2011). Analisi strutturale del ponte in ferro di Paderno d’Adda (1889), Technical Report SdC2011/03 – June 2011, Università degli Studi di Bergamo, Facoltà di Ingegneria (Dalmine), Dipartimento di Progettazione e Tecnologie, viale G. Marconi 5, I-24044 Dalmine (BG), Italy, 97 pages.
• [11] Gentile C., Saisi A. (2010). Dynamic assessment of the iron bridge at Paderno d’Adda (1889), in Proc. of 7th Int. Conf. on Structural Analysis of Historic Constructions (SAHC10), Eds. Xianglin Gu and Xiaobin Song, Shanghai, China, 6-8 October 2010, Advanced Materials Research, Vols. 133-134 (2010), 709-714.
• [12] Gentile C., Saisi A. (2010). Dynamic monitoring of the Paderno iron arch bridge (1889), in Proc. of 6th Int. Conf. on Arch Bridges (ARCH’10), Baochun Chen, Jiangang Wei (Eds.), Fuzhou, China, 11-13 October 2010, 22-37.
• [13] Gentile C., Saisi A., Busatta F. (2011). Dynamic testing and permanent monitoring of an historic iron arch bridge, in Proc. of 8th Int. Conf. on Structural Dynamics (EURODYN 2011), Eds. G. De Roeck, G. Degrande, G. Lombaert, G. Müller, Leuven, Belgium, 4-6 July 2011, Book of Abstracts p. 46; CD-ROM Proceedings, Paper MS07-243, 8 pages.
• [14] Ferrari R., Cocchetti G., Rizzi E. (2012). Limit analysis of a historic iron arch bridge. Formulation and computational implementation. Preprint.
• [15] Cocchetti G., Maier G. (2003). Elastic-plastic and limit-state analyses of frames with softening plastic-hinge models by mathematical programming, Int. J. of Solids and Structures, 40(25), 7219-7244.