Load capacity of damaged RC slab spans of railway bridges

• Autorzy: Maksymowicz, M. , Cruz, P. J. S. , Bień, J.

Warianty tytułu

PL

Nośność uszkodzonych żelbetowych przęseł płytowych mostów kolejowych

• Języki publikacji: EN

Abstrakty

EN

European railway bridges are relatively old and degradation processes cause defects diminishing their load capacity. This paper presents computer-based DAGA system supporting the load capacity assessment of damaged railway slab spans made of reinforced concrete (RC). Construction of the analysed bridge spans and types of considered defects (mainly material losses and strength reduction) are based on a study of the railway infrastructure in Poland and Portugal as well as on results of the international research projects focused on railway bridges. Presented system is equipped with an advanced graphical editor which enables precise and fast creation of a three-dimensional model of the damaged bridge span and offers graphical presentation of the results of the load capacity analysis. Effective algorithm of static and strength analysis allows simultaneous modelling of various defects with non-limited intensity, extent and location.

PL

Europejskie mosty kolejowe są stosunkowo stare, a procesy degradacji powodują uszkodzenia obniżające ich nośność. W niniejszej pracy przedstawiono system komputerowy DAGA wspomagający ocenę nośności żelbetowych przęseł płytowych mostów kolejowych z uwzględnieniem ich uszkodzeń. Rozwiązania konstrukcyjne oraz typy uszkodzeń analizowanych przęseł określono na podstawie analiz stanu infrastruktury kolejowej w Polsce i w Portugalii, z wykorzystaniem rezultatów międzynarodowych projektów badawczych dotyczących mostów kolejowych. Prezentowany system jest wyposażony w zaawansowany edytor graficzny umożliwiający precyzyjne i szybkie tworzenie trójwymiarowego modelu uszkodzonego przęsła oraz prezentację wyników analizy. Efektywny algorytm analizy statyczno-wytrzymałościowej pozwala na równoczesne uwzględnianie różnych typów uszkodzeń o dowolnej intensywności, rozległości i usytuowaniu.

Słowa kluczowe

PL

nośność; wada; most kolejowy; wizualizacja

EN

load capacity; defect; RC slab span; railway bridge; visualization

• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2011
• Tom: Vol. 11, no 4
• Strony: 963-978
• Opis fizyczny: Bibliogr. 29 poz., rys., tab., wykr.

Twórcy

autor

Maksymowicz, M.

autor

Cruz, P. J. S.

autor

Bień, J.

• Gifford LLP, Carlton House, Ringwood Road, Woodlands, SO40 7HT Southampton, United Kingdom

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