Fatigue Reliability Assessment of Railway Bridges Based on Probabilistic Dynamic Analysis of a Coupled Train-Bridge System

This work deals with the fatigue reliability assessment of a welded joint in a longitudinal stiffener of trapezoidal shape in a very fast ferry. Based on the analysis of wave and cargo induced loads the ship hull structure is evaluated. The local structure is represented by a longitudinal stiffener with a trapezoidal transverse section. The critical hot-spots and the stress distributions are defined by FEM. The fatigue damage assessment of considered hot spots is analysed accounting for the combination of wave induced and car-breaking transient loadings. The formulation for the assessment of the welded steel joint is based on the S-N approach and FORM/SORM techniques are applied to evaluate the reliability against fatigue failure accounting for corrosion deterioration. The structural system composed by several hot spots is evaluated as a series system based on second order reliability bounds.

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Fatigue reliability assessment of an existing steel railroad bridge

Engineering Structures ◽

10.1016/s0141-0296(01)00038-4 ◽

2001 ◽

Vol 23 (10) ◽

pp. 1203-1211 ◽

Cited By ~ 18

Author(s):

Sang-Hyo Kim ◽

Sang-Woo Lee ◽

Ho-Seong Mha

Keyword(s):

Reliability Assessment ◽

Fatigue Reliability ◽

Railroad Bridge

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Fatigue reliability assessment in time domain using stochastic-induced random stress loads due to limited experimental data

Engineering Failure Analysis ◽

10.1016/j.engfailanal.2020.104794 ◽

2020 ◽

Vol 117 ◽

pp. 104794

Author(s):

S.S.K. Singh ◽

S. Abdullah ◽

A.K. Ariffin

Keyword(s):

Experimental Data ◽

Time Domain ◽

Reliability Assessment ◽

Fatigue Reliability

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Study on Reliability Evaluation Method of Existing CFST Arch Bridge

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.226-228.1679 ◽

2012 ◽

Vol 226-228 ◽

pp. 1679-1682

Author(s):

Yi Song Zou ◽

Hai Tao Hou ◽

Wei Peng

Keyword(s):

System Reliability ◽

Reliability Index ◽

Evaluation Method ◽

Reliability Assessment ◽

Steel Tube ◽

Arch Bridge ◽

Cfst Arch Bridge ◽

Arch Bridges ◽

Grading Standards ◽

Bridge System

Based on reliability theory, the application calculation method of Concrete Filled Steel Tube (CFST) arch bridge system reliability index is studied. Select the most unfavorable load distribution in working condition of maximum moment and deflection at the mid-span, from the angle of strain energy, calculated the weights of CFST arch ribs component. On the basis of the grading standards of reliability assessment of the existing bridge components and the critical structures, CFST arch bridge system reliability assessment grading standards are constructed. CFST arch bridges reliability index are evaluated from two aspects (the arch ribs and segment) in this article. As the CFST arch bridge locates in the marine environment, corrosion environment is the serious level of C5-M, steel pipe corrosion is the major diseases of CFST, arch rib which on the corrosion conditions were assessed. The results show that the method can effectively assess the situation of CFST arch bridge.

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Ein Modell mit Boden-Bauwerk-Interaktion zur dynamischen Berechnung von Eisenbahnbrücken/A model with soil-structure interaction for the dynamic analysis of railway bridges

Bauingenieur ◽

10.37544/0005-6650-2020-07-08-81 ◽

2020 ◽

Vol 95 (07-08) ◽

pp. 289-298

Author(s):

Christoph Adam ◽

Benjamin Hirzinger

Keyword(s):

Dynamic Analysis ◽

Soil Structure ◽

Soil Structure Interaction ◽

Wird Eine ◽

Railway Bridges ◽

Structure Interaction

Zusammenfassung In diesem Beitrag wird eine einfache Modellierungsstrategie zur schnellen und effizienten Berechnung der dynamischen Antwort von Brücken zufolge der Überfahrt mit Hochgeschwindigkeitszügen vorgestellt. Dabei wird sowohl die Boden-Bauwerk-Interaktion als auch die Wirkung des Zuges während der Zufahrphase auf das Tragwerk beziehungsweise nach dem Abfahren berücksichtigt. Im mechanischen Modell wird die Brücke als Bernoulli-Euler -Balken, welcher von den statischen Achslasten des Hochgeschwindigkeitszugs überfahren wird, beschrieben. Feder und Dämpfer an den Rändern des Balkens bilden das Verhalten des Untergrunds ab. Die Ergebnisse eines Anwendungsbeispiels zeigen, dass die Boden-Bauwerk-Interaktion die berechnete dynamische Antwort wesentlich beeinflusst.

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